Note: Descriptions are shown in the official language in which they were submitted.
Description
Wet High Intensity Magnetic Separator
Technical Field
The invention belongs to the technical field of magnetic separation and
specifically relates to a
wet high intensity magnetic separator.
Background Technology
With the continuous progress of social modernization, the quantity demanded
for all kinds of metal
materials is also increasing, so the mineral resources are constantly being
mined and the quality of
mineral resources is decreasing. In order to use mineral resources more
efficiently, mineral
processing, especially fine mineral processing has become an inevitable trend.
In the field of mineral processing, magnetic separation has been a very
important method of
mineral processing. Especially in the separation of magnetic minerals,
magnetic separation is the
first choice in the industry for its advantages of stability, environmental
protection, low cost and
easy operation. In the resources containing magnetic minerals, compared to the
natural high pure
magnetic minerals which can be used directly without selection and the high
grade magnetic
minerals easy to select, the separation of most of the other weakly magnetic
minerals, especially
low-grade and weakly magnetic minerals, and strong, weakly symbiotic magnetic
minerals, and
non-metallic minerals that regard magnetic minerals as impurities is
relatively complex. With the
increase of the amount of mining in modern mines year by year, the total
amount of resources of
the natural high pure magnetic minerals which can be used directly and the
high grade magnetic
minerals easy to separate have been reduced, and the tailings after selecting
and also containing
available resources is increasing (this refers to magnetically available
resources). Therefore, the
separation of these other magnetic minerals and the available resources in
tailings has been highly
valued in the mineral processing enterprises.
In the separating process of these minerals, the core equipment must be a
magnetic separator
with strong magnetic trapping ability. Because of the wide variety and complex
and diverse forms
of these minerals, a strong magnetic separator with strong adaptability and
adjusting ability is
urgently needed. And because the sorting of these minerals is more complicated
and complex in
process and separating equipment, and there is strong correlation among all
processes in the
whole process, so the sorting index and safety and stability of the equipment
are also crucial.
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CA 3015206 2018-09-13
Brief Description of the Drawings
Fig.1 is the main view of the wet high intensity magnetic separator of the
invention;
Fig.2 is a schematic diagram of the stereoscopic structure of the wet high
intensity magnetic
separator of the invention;
Fig.3 is a schematic diagram of the stereoscopic structure of the other side
of the wet high
intensity magnetic separator removing the cover body;
Fig.4 is a schematic diagram of the stereoscopic structure of the magnetic
yoke in the wet high
intensity magnetic separator of the invention;
Fig.5 is a schematic diagram of the stereoscopic structure of the upper left
magnetic pole in the
wet high intensity magnetic separator of the invention;
Fig.6 is a schematic diagram of the stereoscopic structure of the middle and
lower magnetic poles
of the wet high intensity magnetic separator of the invention;
Fig.7 is a schematic diagram of the stereoscopic structure profile of a coil
in the wet high intensity
magnetic cutaway centerline ring of the invention;
Fig.8 is a schematic diagram of the stereoscopic structure profile of a coil
shell
in the wet intensity strong magnetic cutaway centerline ring of the invention;
Fig.9 is a schematic diagram of the stereoscopic structure of the heat
exchanger of the wet high
intensity magnetic separator of the invention;
Fig.10 is a schematic diagram of the stereoscopic structure of the ring of the
wet high intensity
magnetic separator of the invention;
Fig.11 is a schematic diagram of the stereoscopic structure of the ring frame
of the wet high
intensity magnetic separator of the invention;
Fig.12 is a schematic diagram of the stereoscopic structure of the matrix box
module of the wet
high intensity magnetic separator of the invention;
Fig.13 is a schematic diagram of the stereoscopic structure profile of the
left bearing pedestal
section of the ring drive part of the wet high intensity magnetic separator of
the invention;
Fig.14 is a schematic diagram of the stereoscopic structure of the discharging
water tank of the
wet high intensity magnetic separator of the invention;
Fig.15 is a schematic diagram of the stereoscopic structure of the discharging
water slag box of
the wet high intensity magnetic separator of the invention;
Fig.16 is a schematic diagram of the relative position of the magnetic
material collecting hopper,
the middling hopper and the magnetic yoke and the ring frame of the wet high
intensity magnetic
separator of the invention;
Fig.17 is a schematic diagram of the relative position of the coarse particle
separating sieve plate
and the feeding hopper of the wet high intensity magnetic separator of the
invention;
Fig.18 is a schematic diagram of the stereoscopic structure of the shield
which is located outside
the ring of the wet high intensity magnetic separator of the invention;
Fig.19 is the main view of the relative position of the non-magnetic material
collecting hopper and
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Date Recue/Date Received 2021-04-07
the pulsation mechanism and bracket of the wet high intensity magnetic
separator of the invention;
Fig.20 is a schematic diagram of stereoscopic structure of the bracket part at
the relative position
of the non-magnetic material collecting hopper and pulsation mechanism and
bracket of the wet
high intensity magnetic separator of the invention;
Fig.21 is a schematic diagram of the stereoscopic structure of the pulse box
removing the lid of the
wet high intensity magnetic separator of the invention;
Fig.22 is a schematic diagram of the circuit structure of the safety and
isolation system and the
adjustment system of the wet high intensity magnetic separator of the
invention;
Fig.23 is the schematic principle diagram of the vertical ring wet high
intensity magnetic separator
with forced oil cooling;
Fig.24 is the isometric view of the vertical ring wet high intensity magnetic
separator with forced oil
cooling in Fig.22;
Fig.25 is an isometric cross-sectional view of the magnetic yoke in Fig.24;
Fig.26 is an isometric cross-sectional view of the coil assembly in Fig.24;
Fig.27 is an isometric view of the windings in Fig.26;
Fig.28 is an isometric view of the ring in Fig.24;
Fig.29 is an isometric view of the ring frame in Fig.24;
Fig.30 is an isometric view of the concentrate hopper and the concentrate ore
transition hopper in
Fig.24;
Fig.31 is an isometric cross-sectional view of the concentrate aggregate
trough in Fig.24;
Fig.32 is the electric control schematic diagram of the vertical ring wet high
intensity magnetic
separator with forced oil cooling.
Summary
.. In order to overcome the problems of poor regulation ability and poor
safety and stability of the
existing technology, the invention provides a wet high intensity magnetic
separator. The wet high
intensity magnetic separator of the invention is a magnetic separator which
has a strong ability to
capture the magnetic particles in the magnetic mineral pulp, and is a kind of
modular design
electromagnetic equipment, and is a strong magnetic separator which can
separate and
concentrate the weak magnetic particle material in pulp and the pulp in the
separation area is
pulsating and oscillating when separating.
According to the first technical scheme of the invention, the invention
provides a wet high intensity
magnetic separator, which comprises a magnetic excitation system, a sorting
collection system, a
safety and isolation system and an adjustment system. The magnetic excitation
system is used to
.. provide a background magnetic field for wet high intensity magnetic
separator to sort; the sorting
collection system, with the background magnetic field provided by the magnetic
excitation system,
makes the magnetic material in the pulp containing magnetic minerals separated
from the
non-magnetic material by magnetic separation and collected to the different
collecting regions
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Date Recue/Date Received 2021-04-07
respectively; the safety and isolation system is used to isolate the particle
from the wet high
intensity magnetic separator, to isolate the granularity of the feeding
materials, to isolate the
impurities in the water, to isolate pollution from the insulating coolant, to
isolate the magnetic field
from the fear magnetic components (such as a bearing, a motor, a reducer,
etc.) and to provide
safety protection for important components (such as motors, coils, matrix box
modules, etc.) and
personal safety protection for operators; and the adjustment system is used
for adjusting the
background magnetic field intensity of the magnetic excitation system, and the
ring speed
(equivalent to the sorting time of the material) of the sorting collection
system, the regulation of
pulsation amplitude and frequency (equivalent to the vibration intensity and
frequency of the
ore-selected pulp), the adjustment of the height of the liquid level (the
correlation division length)
and the adjustment of the quantity/angle of the rinsing water and discharging
water.
The magnetic excitation system, the sorting collection system, the safety and
isolation system and
the adjustment system are designed in accordance with the modular design,
alternatively, the part
system of the influence sorting index of the magnetic excitation system, the
sorting collection
system, the safety and isolation system and the adjustment system is
modularized design, then
the corresponding module is replaced according to the different sorting
material and working
condition, so as to achieve the ideal processing index.
The magnetic excitation system comprises a magnetic yoke 1, a coil 2 and a
heat exchange
device 3, wherein the magnetic yoke 1 comprises a left upper magnetic pole
110, a right upper
magnetic pole 120, a left magnetic conductive plate 130, a right magnetic
conductive plate 140
and a lower magnetic pole 150, wherein the left upper magnetic pole 110 and
the right upper
magnetic pole 120 are connected with an upper magnetic pole yoke plate 111 and
an upper
magnetic pole iron core module 112 by welding or fastener fastening, the lower
magnetic pole 150
is connected with two symmetrical lower magnetic pole yoke plates 151 and a
lower magnetic pole
core module 152 and a water retaining plate 153 located on its two sides by
welding or fastener
fastening.
According to different working conditions, the wet high intensity magnetic
separator is matched
with a different upper magnetic pole iron core module 112 and a lower magnetic
pole core module
152. According to different anti-corrosion requirements, the upper magnetic
pole iron core module
112 and the lower magnetic pole core module 152 of the wet high intensity
magnetic separator are
divided into three grades: the first grade is no special treatment, and the
second grade is to spray
water resistant and abrasion resistant coating on the contact surface of the
magnetic pole iron core
and the pulp, and the third grade is to increase the replaceable sacrificial
anode on the basis of the
second grade. For the use place of the high content strong magnetic minerals
in the separation
pulp, the upper magnetic pole iron core module is used to do the acute angle
roundness treatment
and / or add nonmagnetic stainless steel magnetic separation processing around
the flow
clearance 113, and the lower magnetic pole iron core module isn't used to do
the acute angle
roundness treatment and / or add nonmagnetic stainless steel magnetic
separation processing
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Date Recue/Date Received 2021-04-07
around the flow mine water gap 154.
The coil 2 comprises a coil shell 210 and a coil winding 220 and the
insulating coolant 230 of the
coil shell 210 immersed the coil winding 220, wherein the coil shell 210
comprises an inner
enclosing plate 211, an upper magnetic conductive plate 212, a lower magnetic
conductive plate
213, and a outer enclosing plate 214. The inner enclosing plate 211 of the
coil shell 210 is made of
nonmagnetic steel plate, while the upper magnetic conductive plate 212, the
lower magnetic
conductive plate 213 and the outer enclosing plate 214 are made of high
magnetic conductive
steel plate. The coil winding 220 is placed in the coil shell 210 and an
insulating bar 240 is used to
pad the coil winding and isolate the coil winding from the coil shell 210 to
ensure complete
insulation from the coil shell 210 and preset the flow passage of the
insulating coolant. When the
coil winding 220 is being winded, an insulating bar 240 is also used to pad
the insulation coolant
flow passage in the inner coil winding, and the lower part of the coil shell
210 is provided with a
coolant inlet 215, and the upper part of the coil shell 210 is provided with a
coolant outlet 216 away
from the coolant inlet 215, and the insulating coolant 230 flows through the
coolant inlet 215 into
the coil shell 210 and flows through the coil winding and the insulated
coolant passages between
the coil winding 220 and the coil shell 210, and then outflow from the coolant
outlet 216,and said
flow in the coolant channel is uniform, and there is no flow dead angle, so it
can take away the
heat generated when the coil winding 220 is excitation.
A distributary cavity 217 is arranged between the coolant inlet 215 and the
coil winding 220, and a
conflux cavity 218 is arranged between the coolant outlet 216 and the coil
winding 220. The heat
exchange device 3 comprises a pipeline 310, a pump 320 and a heat exchanger
330. The inlet of
the pump 320 is connected with the coolant outlet 216 of the coil through the
pipeline 310, and the
outlet of the pump 320 is connected with the heat exchanger 330, while the
other end of the heat
exchanger 330 is connected with the coolant inlet 215 of the coil. According
to different conditions
of the field, the heat exchanger 330 can be any conventional closed-loop heat
exchanger.
There is a drain valve 340 at the lowest part of the insulating coolant 230
between the pump 320
and the coolant outlet 216, and the valve can be used to empty the insulating
coolant 230 of the
coil 2 and the heat exchange device 3, and it can also cooperate with the pump
320 to inject an
insulating coolant 230 to the coil 2 and the heat exchange device 3.
The sorting collection system comprises a ring 4, a ring drive parts 5, a
feeding hopper 6, a
flushing hopper 7, a discharging water tank 8, a magnetic material collecting
hopper 9, a middling
hopper 10, a non-magnetic material collecting hopper 11, a pulsation mechanism
12, a liquid level
observation hopper 13. Wherein, the ring 4 is one of the key components of the
invention, and a
sorting region is produced within the magnetic yoke 1 of the coil 2
excitation. At this point, the ring
.. 4 can take the matrix box module 420 into/out of the separation zone, the
ring drive parts 5
provides rotational power for the rotation of the ring 4, the feeding pulp
flows from the feeding
hopper 6 to enter in the sorting area, the flushing hopper 7 is responsible
for rinsing of the material
in the process of sorting, the discharging water tank 8 is responsible for
flushing the magnetic
material taken from the ring 4 out of the matrix box module 420, the magnetic
material collecting
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Date Recue/Date Received 2021-04-07
hopper 9 is responsible for collecting and summarizing these magnetic
materials together to
discharge out of the wet high intensity magnetic separator, and the non-
magnetic material not
selected out is collected by the non-magnetic material collecting hopper 11
and thereafter
discharged out of the wet high intensity magnetic separator, the material and
pulp water out of the
.. division constituency but not come to upper part of the magnetic material
collecting hopper 9 flows
into the middling hopper 10, the pulsation mechanism 12 can make the pulp of
the division keep in
the concussion state when in the sorting process. It is advantageous to the
separation of minerals
and impurities, and the liquid level observation hopper 13 can observe the
height of separation
liquid level out of the magnetic yoke 1 and the separation area and provide
the basis for the
adjustment of the height of the separation liquid level.
The ring 4 comprises a ring frame 410 and a matrix box module 420. The ring
frame 410
comprises a hub 411, a web 412, a support ring 413 and a skeleton 414, wherein
the support ring
413 and the skeleton 414 are made of non-magnetic stainless steel. The matrix
box module 420 is
installed between two skeletons 414 which are circumferential adjacent, in
addition to that small
wet high intensity magnetic separator is arranged with a single row of matrix
box module 420, the
matrix box module 420 on the two sides of the web 412 is in the same staggered
arrangement.
(That is, the number of matrix boxes on both sides of the web is the same, and
every time a matrix
box module 420 starts to enter the sorting space, there must be a
corresponding matrix box
module 420 which is in half of the separation space).
.. The matrix box module 420 comprises two or more pieces of non-magnetic
frame plate 421, and a
high magnetic medium 422 which is located between the non-magnetic frame plate
421 and an ear
plate 423. The matrix box module 420 can be fixed to the adjacent two
skeletons 414 through the
ear plate 423.In the matrix box module 420, the high magnetic medium 422
includes both rod and
mesh media, as well as steel wool or any other form of magnetic material which
can be filled
between the non-magnetic frame plate 421 and will eventually be placed on the
ring frame 410
and can produce induction magnetic field when using in the wet high intensity
magnetic separator;
in the matrix box module 420, the high magnetic medium 422 includes both tight
arrangement and
loose arrangement, both uniform arrangement of the media gap and gradient
arrangement of the
media gap, both a single form of magnetic conducting media arrangement and a
variety of forms of
magnetic conducting media blending arrangement. When the pulp is corrosive,
the matrix box
module 420 is divided into three anti-corrosion grades: the first grade is
high magnetic medium
422 using anti-corrosion material; the second grade provides overall coating
treatment of the
matrix box module 420 on the basis of first level; the third grade increases
the sacrificial anode
corrosion on the basis of the second grade.
According to the actual operating conditions in the field the wet high
intensity magnetic separator is
equipped with different matrix box module 420. The ring drive parts 5
comprises a middle shaft 510,
a magnetic flux-tight sleeve 520, a middle shaft bearing housing 530, a gear
drive 540, a ring drive
motor 550 and a reducer 560. The wet high intensity magnetic separator further
comprises the
feeding hopper 6 and the flushing hopper 7, and the upper magnetic pole iron
core module 112,
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Date Recue/Date Received 2021-04-07
which is connected with the feeding hopper 6, is provided with a flow
clearance 113 which leads
the pulp into the sorting area. The material pulp flows from the feeding
hopper 6 into the wet high
intensity magnetic separator, and then through the flow clearance 113 flows
into the ring 4 of
sorting area. The flushing hopper 7 is equipped with rinsing water, the upper
magnetic pole iron
core module 112 connected with the flushing hopper 7 is provided with water
gap 114 that the
rinsing water can flow into the separation area. The rinsing water can
selectively flush the trapped
mineral and the impure mineral in the captured magnetic material from the
matrix box module 420
to allow it to enter the non-magnetic material collecting hopper 11. The
discharging water tank 8 is
equipped with the mine water spraying module 810, it can form different
discharging water by
replacing different mine water spraying module 810, that is, changing the
water spraying
position/water spraying angle and the amount of spraying water when using the
same discharging
water pressure. The two sides of the discharging water tank 8 are respectively
provided with
rinsing water outlet 820 and water flow exit 830, and all the water supply
ports using industrial
circulating water are unified to the water inlet of the discharging water tank
8. The discharging
water tank 8 washes out all the materials adsorbed in the matrix box module
420 by spraying
discharging water to the ring 4.
The magnetic material collecting hopper 9 comprises a collection part 910, a
diversion part 920
and a summary part 930. Among them, the collection part 910 and the diversion
part 920 are
symmetrical two parts about the web 412 and respectively locate on the two
sides of the web 412,
the summary part 930 is one part that symmetrical about the center of the web
412. The collection
part 910 is above the upper magnetic pole iron core module 112, from the left
of the flushing
hopper 7 inside the ring 4 to the lower right of the discharging water tank 8
inside the ring 4. The
summary part 930 is located at the lower part of the coil 2 which is in the
left side of the magnetic
yoke 1. The diversion part 920 is connected to the outlet of the collection
part 910 and the two
ends of the summary part 930. It can catch all the magnetic material which is
taken to the top of
the collection part 910 after leaving from the sorting area along the ring 4
to the summary part 930,
and then discharge from the wet high intensity magnetic separator uniformly.
The middling hopper
10 is located on the left side of the lower magnetic pole core module 152 and
clings to the lower
magnetic pole core module 152. The feeding port is located in connecting
portion of the lower left
side of the ring 4 and the magnetic yoke 1 to the left outer part of the ring
4, and the width crosses
the ring 4 axially along the ring 4. It can collect the material which leaves
from the sorting area
along the ring 4 but not to top portion of the magnetic material collecting
hopper 9.
The non-magnetic material collecting hopper 11 is installed in the lower part
of the magnetic yoke 1
and is connected with the lower part of the magnetic yoke 1, and it can catch
the pulp flowing out
of the lower magnetic pole core module 152 completely. The non-magnetic
material collecting
hopper 11 is divided into two disconnected collection intervals, the right
collection interval 1110 is
located below the feeding hopper 6 and the middle shaft 510, the left
collection interval 1120 is
located below the flushing hopper 7. The bottom of the two-collecting space is
provided with one or
more non-magnetic material discharging valve 1130 respectively.
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Date Recue/Date Received 2021-04-07
When the non-magnetic material collecting hopper 11 is removed from the lower
magnetic pole
core module 152, it can be stabilized on the device support to facilitate the
separator dismantling
of the split-body transport and reassembly of the wet high intensity magnetic
separator.
The pulsation mechanism 12 comprises pulsating box 1210, belt pulley group
1220, pulsating
motor 1230, pulsating push plate 1240, rubber soft connection 1250. The
pulsating box 1210 is
equipped with an eccentric wheel module 1211. After the deceleration of the
driving the belt pulley
group 1220, the pulsating motor 1230 drives the eccentric wheel module 1211 in
the pulsating box
1210, it can transfer the circular motion generated by the motor into the left-
right reciprocating
movement. The left end of the pulsating box 1210 is provided with a push rod
1212, the one end of
the push rod 1212 is connected with the eccentric wheel module 1211 and the
other end is
connected with the pulsating push plate 1240, and the push rod 1212 transmits
the reciprocating
force of the eccentric wheel 1211 in the pulsating box to the pulsating push
plate 1240. The outer
side of the pulsating push plate 1240 and the right collection interval 1110
of the non-magnetic
material collecting hopper are connected through the rubber soft connection
1250. When the
pulsating box is running, the left-right reciprocating force can be passed to
the pulp which is
located on the right side of the collection interval 1110 through the
pulsating push plate 1240, it can
make the pulp pulsating vibrate, and then the pulsating vibration is extended
to the sorting area
along the pulp to sorting area.
The safety and isolation system comprises setting the coarse particle
separation sieve plate 14 in
the feeding hopper 6 or setting the same functional unit before feeding,
preventing large particles
from entering into the upper magnetic pole iron core module 112 and the matrix
box module 420
which may cause clogging and affecting the material passing and sorting index.
In addition, adding the discharging water slag box 15 before the discharging
water tank 8, the
discharging water slag box 15 is equipped with a slanting slag sieve plate
1510, after the industrial
circulating water flowing into the discharging water slag box 15 it is
isolated by the slanting slag
sieve plate 1510, of which large particles of impurities and light impurities
are isolated, as the
slanting slag sieve plate 1510 is inclined downward along the flow direction,
so the impurity
separated is effected by the force of the flow downward momentum and it will
flow to the lower part
of the discharging water slag box 15 and converge under the bottom of the
discharging water slag
box 15, thus, preventing the large particulate impurities of discharging water
from entering into the
discharging water tank 8 jamming the discharging water spraying hole and
affecting the
discharging effect and sorting index.
In the bottom of the discharging water slag box 15 there sets manual or
automatic slag drain valve
1520, which can manually or automatically clean the impurity particles
isolated from the
.. discharging the water slag box 15 regularly. After flowing through the coil
winding 220, the
insulation coolant 230 in coil 2 can fully take the heat generated by the coil
winding 220 to the heat
exchange device 3, and discharge through the heat exchanger 330. During the
whole process the
insulation coolant 230 is in closed circuit, no outside pollution, all the
exchange of heat with the
outside is completed in the heat exchanger 330. The middle shaft 510 and the
ring 4 adopt two
Date Recue/Date Received 2021-04-07
narrow magnetic flux-tight sleeve 520 for connections, reducing the contact
area between the
middle shaft 510 and the ring 4 while ensuring torque transmission, at the
same time, the material
of the magnetic flux-tight sleeve 520 adopt alloy steel or non-magnetic steel
with much poor
permeability than the magnetic yoke, therefore reducing the transmission of
magnetic field which
through the web 412 and the middle shaft 510 to the middle shaft bearing 531,
the ring drive motor
550 and the reducer 560; under the middle shaft bearing housing 530 and the
ring drive motor 550
and the reducer 560 there sets non-magnetic stainless steel plate, further
reducing the amount of
the magnetic field passing through the middle shaft bearing 531 and the ring
drive motor 550 and
the reducer 560, thereby extending the service life of the middle shaft
bearing 531 and the ring
drive motor 550 and the reducer 560. The front-end of the ring drive motor 550
and the pulsating
motor 1230 and the pump 320 are equipped with motor protector 16, when the
detection of
hyper-flow or lack of phase it can timely protect and alarm.
Temperature probe 17 is provided near the coil coolant inlet pipeline 310 and
the coolant outlet
216 and at the top of the insulation coolant 230, real-time monitoring the
temperature and
temperature difference of the insulation coolant in coil inlet and outlet,
when the temperature is too
high or the temperature difference is too large, it will send out the fault
alarm; The coil coolant inlet
pipeline 310 is provided with flow switch 18, monitoring the flow state of the
insulating coolant 230
and sending out the fault alarm when the flow is not up to the set
requirement.
All operating parts of the device are covered with a shield 19, and an
observation window 1910
shall be set for the parts needed to observe the operation. The observation
window 1910 is
protected by a steel net to ensure that the personnel are not exposed to the
running parts.
The adjustment system comprises the regulation of the excitation current of
the wet high intensity
magnetic separator coil 2. The excitation of the wet high intensity magnetic
separator is adopted
constant direct current inputting, inputting preseted current by the current
set unit 2011, and then
through constant current controller 2010, controlling SCR (or diode-coupled
IGBT) rectifier module
20 converts industrial electricity into a preset dc input into coil 2, in the
process of inputting the
current into the coil 2 the hall element or other similar function element 21
is provided to monitor
the current and feedback to constant current controller. Then the output
voltage is adjusted by the
constant current controller 2010 to match the detection value and the preset
value, thus ensuring
that the current of the wet high intensity magnetic separator input coil 2 is
in accordance with the
preset current of the current setting unit 2011.
The rotate speed of the ring 4 and the pulsation frequency of the pulsating
box 1210 of the wet
high intensity magnetic separator are realized by changing the output
frequency of relay ring
converter 22 and pulse frequency converter 23 in adjustment system
respectively.
The pulsating amplitude of the wet high intensity magnetic separator is
achieved by adjusting the
eccentricity of the eccentric wheel module 1211 in the pulsating box. The
liquid level height in the
liquid level observation hopper 13 is monitored by the manual or liquid level
meter 24 , and then
achieved manually or automatically by adjusting the open degree of one or more
non-magnetic
material discharging valve 1130 at the bottom of the non-magnetic material
collecting hopper 11.
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Date Recue/Date Received 2021-04-07
The rinsing water quantity is realized by adjusting the opening of the valves
of the rinsing water
outlet 820 that on the two sides of the discharging water tank 8, and then
provided to the flushing
hopper 7 evenly through the water separator 840 in the flushing hopper 7,
after shunting the
rinsing water can be more stable to restrain the non-magnetic fine particle in
the pulp of the sorting
area and the non-magnetic material taken in the matrix box module 420.
According to the second technical scheme of the invention, a vertical ring wet
high intensity
magnetic separator with forced oil cooling comprises seven parts: magnetic
excitation system,
sorting system, pulsation system, collection system, supporting system,
driving system, protection
system; The magnetic excitation system provides working magnetic field,
sorting system provides
continuously separating the fine tailings, and the pulsating system provides
pulsating effect to the
slurry of the vertical ring wet high intensity magnetic separator with forced
oil cooling; The
collection system is used for feeding, flushing, collecting the fine tailings,
and adjusting the level of
the water; The supporting system is fixedly connected with the field
foundation and supports the
main body of the device; the driving system provides power for the ring and
pulsation of the
vertical ring wet high intensity magnetic separator with forced oil cooling;
The protection system is
used to protect the safety of persons and device.
Compared with the existing technology, the wet high intensity magnetic
separator of the invention
comprises four systems, namely magnetic excitation system, sorting collection
system, safety and
isolation system and adjustment system, which are composed of several
components or modules,
the reliable and stable strong magnetic separation of weakly magnetic minerals
is realized by the
cooperation of different systems. The invention has the following beneficial
effects:
(a) The present invention is not only suitable for the enrichment of weakly
magnetic materials
especially weakly magnetic minerals in low-grade weakly magnetic minerals, but
also for the
enrichment of weakly magnetic minerals in strong and weak symbiotic magnetic
minerals, and the
removal of magnetic impurities in non-metallic minerals which considers
magnetic minerals as
impurities.
(b) The invention not only has many adjustable parameters, but also adopts
modular design for
some parts which may seriously affect the sorting index, then according to the
different material
and working conditions to adjust the multiple sorting parameters of the device
or replace the
corresponding modules, so as to achieve the maximum fitness of the selection
of materials and
on-site conditions and get the deal sorting index.
(c) The invention also implements a number of measures to improve the
stability of device
operation and sorting, which can improve the working stability of wet high
intensity magnetic
separator and prolong the service life of wet high intensity magnetic
separator, so as to ensure the
smooth flow of the whole separation process and obtain reliable and stable
sorting index.
Specific Embodiments
The technical solution in embodiments of the present invention is clearly and
completely described
below with reference to drawings in the embodiments of the present invention.
Obviously, the
to
Date Recue/Date Received 2021-04-07
described embodiments are only a portion of embodiments in the present
invention but not all the
embodiments of the present invention. Based on the embodiments in the present
invention, an
ordinary person skilled in the art can obtain all other embodiments without
involving any inventive
effort, which all shall fall within the protective scope of the present
invention. Besides, the
protective scope of the present invention should not be regarded as limit in
the following specific
structures or specific parameters. In addition, the scope of protection of the
present invention
should not be limited to the following specific structures or components or
specific parameters.
In order to better understand the specific embodiment of the invention, first
of all the fuzzy
concepts mentioned in this paper are defined as follows:
High magnetic material - metal material with the largest relative permeability
v. rm
Soft magnetic material - metal material with the coercive force HC--300 A/m;
Non-magnetic material - metal material with the largest relative permeability
i.irm--1.6;
Magnetic particle (material) - material with lower the magnetization
coefficient but can be selected
by strong magnetic field;
No (non) magnetic particles (materials) ¨ material with no magnetism or the
magnetic purity of the
material particles is not enough (in the enrichment of weak magnetic
material);
Up, down, left, right, clockwise, counterclockwise ¨ refer to the
corresponding direction of Figure 1
when not specified;
Upper magnetic pole ¨ the same as the left and the right upper magnetic pole;
Magnetic conductive plate ¨ the same as the left and the right magnetic
conductive plate;
Upper magnetic pole iron core ¨ the same as the left and the right upper
magnetic pole iron core;
Upper magnetic yoke plate ¨the same as the left and the right upper magnetic
yoke plate;
Iron core or magnetic pole core ¨ the same as the upper and lower magnetic
pole iron core;
XX module ¨the name for XX modular design, indicating that this part has a
variety of
interchangeable forms, and XX refer to the same;
Closed loop heat exchanger ¨Refers to the heat exchanger that the cold and hot
medium does not
contact with each other when the hot medium heat exchange with the outside
world.
The sign of the accompanying drawings in Figure 1 to Figure 22 are as follows.
Fig.1 is the main view of the wet high intensity magnetic separator of the
invention; the sign shown
in Figure 1: 1-magnetic yoke 2-coil 4-ring 5-ring drive parts 6-feeding hopper
7-flushing hopper
8-discharging water tank 9-magnetic material collecting hopper 11-non-magnetic
material
collecting hopper 12-pulsation mechanism 13- liquid level observation hopper
19-shield 24-liquid
level meter;
Fig.2 is a schematic diagram of the stereoscopic structure of the wet high
intensity magnetic
separator of the invention; the sign shown in Figure 2: 1-magnetic yoke 2-coil
5-ring drive parts
6-feeding hopper 7-flushing hopper 8-discharging water tank 9-magnetic
material collecting hopper
11-non-magnetic material collecting hopper 12-pulsation mechanism 13- liquid
level observation
II
CA 3015206 2018-09-13
hopper 15-discharging water slag box 19-shield 24-liquid level meter 25-
bracket;
Fig.3 is a schematic diagram of the stereoscopic structure of the other side
of the wet high
intensity magnetic separator removing the cover body; the sign shown in Figure
3: 1-magnetic
yoke 2-coil 3-heat exchanger 4-ring 5-ring drive parts 6-feeding hopper 7-
flushing hopper
.. 8-dsicharging water tank 9-magnetic material collecting hopper 11-non-
magnetic material
collecting hopper 12-pulsation mechanism 15-discharging water slag box 17-
temperature probe
18-flow switch 25-bracket;
Fig.4 is a schematic diagram of the stereoscopic structure of the magnetic
yoke 1 in the wet high
intensity magnetic separator of the invention; the sign shown in Figure 4: 110-
left upper magnetic
.. pole 120-right upper magnetic pole 130-left magnetic conductive plate 140-
right magnetic
conductive plate 150-lower magnetic pole;
Fig.5 is a schematic diagram of the stereoscopic structure of the upper left
magnetic pole 110 in
the wet high intensity magnetic separator of the invention; the sign shown in
Figure 5: 111-upper
magnetic pole yoke plate 112-upper magnetic pole iron core module 113-flow
clearance 114-water
gap;
Fig.6 is a schematic diagram of the stereoscopic structure of the lower
magnetic poles 150 of the
wet high intensity magnetic separator of the invention; the sign shown in
Figure 6: 151-lower
magnetic pole yoke plate 152-lower magnetic pole core module 153-water
retaining plate 154-flow
mine water gap;
Fig.7 is a schematic diagram of the stereoscopic structure profile of the coil
2 in the wet high
intensity magnetic separator of the invention; the sign shown in Figure 7: 210-
coil shell 220-coil
winding 230-insulating coolant 240-insulating bar;
Fig.8 is a schematic diagram of the stereoscopic structure profile of the coil
shell 210 in the wet
high intensity magnetic separator of the invention; the sign shown in Figure
8: 17-temperature
probe 211-inner enclosing plate 212-upper magnetic conductive plate 213-lower
magnetic
conductive plate 214-outer enclosing plate 215-coolant inlet 216-coolant
outlet 217-distributary
cavity 218-conflux cavity;
Fig.9 is a schematic diagram of the stereoscopic structure of the heat
exchanger 3 of the wet high
intensity magnetic separator of the invention;
the sign shown in Figure 9: 17-temperature probe 18-flow switch 215-coolant
inlet 216-coolant
outlet 310-pipeline 320-pump 330-heat exchanger 340-drain valve;
Fig.10 is a schematic diagram of the stereoscopic structure of the ring 4 of
the wet high intensity
magnetic separator of the invention; the sign shown in Figure 10: 410-ring
frame 420-matrix box
module;
Fig.11 is a schematic diagram of the stereoscopic structure of the ring frame
410 of the wet high
intensity magnetic separator of the invention; the sign shown in Figure 11:
411-hub 412-web
413-support ring 414-skeleton;
Fig.12 is a schematic diagram of the stereoscopic structure of the matrix box
module 420 of the
wet high intensity magnetic separator of the invention; the sign shown in
Figure 12:
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CA 3015206 2018-09-13
421-non-magnetic frame plate 422-high magnetic medium 423-ear plate;
Fig.13 is a schematic diagram of the stereoscopic structure profile of the
left bearing pedestal
section of the ring drive part 5 of the wet high intensity magnetic separator
of the invention; the
sign shown in Figure 13: 510-middle shaft 520-magnetic flux-tight sleeve 530-
middle shaft bearing
housing 540-gear drive 550- ring drive motor 560-reducer 531-middle shaft
bearing;
Fig.14 is a schematic diagram of the stereoscopic structure of the discharging
water tank 8 of the
wet high intensity magnetic separator of the invention; the sign shown in
Figure 14:
810-discharging water spraying module 820-rinsing water outlet 830-water flow
exit 840-water
separator;
Fig.15 is a schematic diagram of the stereoscopic structure of the discharging
water slag box 15 of
the wet high intensity magnetic separator of the invention; the sign shown in
Figure 15:
1510-slanting slag sieve plate 1520-slag drain valve;
Fig.16 is a schematic diagram of the relative position of the magnetic
material collecting hopper 9,
the midding hopper 10 and the magnetic yoke 1 and the ring frame 410 of the
wet high intensity
magnetic separator of the invention; the sign shown in Figure 16: 1-magnetic
yoke 6-feeding
hopper 10- middling hopper 410-ring frame 910-collection part 920-diversion
part 930-summary
part;
Fig.17 is a schematic diagram of the relative position of the coarse particle
separating sieve plate
14 and the feeding hopper 6 of the wet high intensity magnetic separator of
the invention; the sign
shown in Figure 17: 14-coarse particle separation sieve plate 6-feeding
hopper;
Fig.18 is a schematic diagram of the stereoscopic structure of the shield 19
which is located
outside the ring of the wet high intensity magnetic separator of the
invention; the sign shown in
Figure 18: 1910- observation window;
Fig.19 is the main view of the relative position of the non-magnetic material
collecting hopper 11
and the pulsation mechanism 12 and bracket 25 of the wet high intensity
magnetic separator of the
invention; the sign shown in Figure 19: 1110-right collection interval 1120-
left collection interval
1130-non-magnetic material discharging valve 1210-pulsating box 1220-belt
pulley group
1230-pulsating motor 1250-rubber soft connection;
Fig.20 is a schematic diagram of stereoscopic structure of the bracket part at
the relative position
of the non-magnetic material collecting hopper 11 and pulsation mechanism 12
and bracket 25 of
the wet high intensity magnetic separator of the invention; the sign shown in
Figure 20: 1110- right
collection interval 1120-left collection interval 1130-non-magnetic material
discharging valve
1210-pulsating box 1220-belt pulley group 1230-pulsating motor 1240-pulsating
push plate
1250-rubber soft connection 25-bracket;
Fig.21 is a schematic diagram of the stereoscopic structure of the pulse box
1210 removing the lid
of the wet high intensity magnetic separator of the invention; the sign shown
in Figure 21:
1211-eccentric wheel module 1212-push rod 1220-belt pulley group;
Fig.22 is a schematic diagram of the circuit structure of the safety and
isolation system and the
adjustment system of the wet high intensity magnetic separator of the
invention; the sign shown in
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CA 3015206 2018-09-13
Figure 22:
16-motor protector 20-SCR (or diode-coupled IGBT) rectifier module 2010-
constant current
controller 2011-current setting unit 21-hall element or other similar function
element 22-relay ring
converter 23- pulse frequency converter 24-liquid level meter 220-coil winding
550-ring drive motor
1230-pulsating motor 320-pump 1520-slag drain valve (with timing automatic
switch function)
1130-non-magnetic material discharging valve (automatic control).
The sign shown in Figure 23- Figure 32 is labeled as follows: 110/120-upper
magnetic pole
130/140-magnetic conductive plate 150-lower magnetic pole 153-water retaining
plate 160-up and
down magnetic connector 210-coil shell 220-coil winding 240-insulating bar 241-
insulating bar
bracket 250-expansion box 320-pump 330-heat exchanger 410-ring frame 412-web
420-matrix
box module 5-ring drive parts 510-middle shaft 6-feeding hopper 7-flushing
hopper 8-discharging
water tank 910-collection part 920-diversion part 930-summary part 11-non-
magnetic material
collecting hopper 1131-valve adjusting rod 1210-pulsating box 1230-pulsating
motor
1240-pulsating push plate 1250-rubber soft connection 13-level observation
hopper 15-discharging
water slag box 19-shield 25-bracket.
The invention provides a wet high intensity magnetic separator, which
comprises a magnetic
excitation system, a sorting collection system, a safety and isolation system
and a adjustment
system. The magnetic excitation system is used to provide a background
magnetic field for wet
high intensity magnetic separator to sort; the sorting collection system, with
the background
magnetic field provided by the magnetic excitation system, makes the magnetic
material in the
pulp containing magnetic minerals separated from the non-magnetic material by
magnetic
separation and collected to the different collecting regions respectively; the
safety and isolation
system is used to isolate the particle from the wet high intensity magnetic
separator, to isolate the
impurities in the water, to isolate pollution from the insulating coolant, to
isolate the magnetic field
from the fear magnetic components (such as a bearing, a motor, a reducer,
etc.) and to provide
safety protection for important components (such as motors, coils, matrix box
modules, etc.) and
personal safety protection for operators; and the adjustment system is used
for adjusting the
background magnetic field intensity of the magnetic excitation system, and the
ring rotation speed
(equivalent to the sorting time of the material)of the sorting collection
system, the regulation of
pulsation amplitude and frequency (equivalent to the vibration intensity and
frequency of the
ore-selected pulp), the adjustment of the height of the liquid level (the
correlation division length)
and the adjustment of quantity/angle of the rinsing water and the discharge
water. The invention
has modular design to some parts which affect the sorting index and can
replace the
corresponding module according to the different material and working
conditions, thus achieving
the ideal beneficiation index.
The slower the rotary speed, the longer the sorting time of the material, the
smaller the processing
volume, when the ring speed is very slow the sorting effect is not obvious;
the pulsation amplitude
and frequency are positively correlated with the oscillation intensity and
frequency of the selected
pulp respectively, and the level of liquid level is positively correlated with
the length of the sorting
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CA 3015206 2018-09-13
part, and when the liquid level to small the sorting effect is obviously
decreased, a calibration liquid
level is generally set; the automatic monitoring device designed in the
invention is mainly to
monitor the liquid level, in which manual or automatic adjustment can be used
to monitor the liquid
level.
In the present invention, whether for weakly magnetic minerals or for non-
metallic minerals which
considers magnetic minerals as impurities, the purpose of the separation is to
separate the
magnetic particles from the non-magnetic particles or particles with
insufficient purity, and if the
magnetic particles are to be separated from the original mixed minerals, a
strong enough magnetic
trapping force must be provided.
The magnetic trapping force of magnetic particles is mainly determined by the
average specific
coefficient of magnetic particles, the intensity of separation magnetic field
and the gradient. The
average specific magnetic coefficient of magnetic impurity particles in weakly
magnetic and
nonmetallic ores is relatively low. If you want to be able to generate enough
magnetic trapping
force in such a case, we should start with improving the intensity and
gradient of the separation
field.
The wet high intensity magnetic separator, based on the long-term research
results of the
magnetic separation technology, uses the principle of inductive magnetization
to realize the
coordinated application of the magnetic field intensity and gradient, that is,
the magnetic soft
magnetic material in the background magnetic field will be magnetized,
magnetized soft magnetic
material will affect the direction of magnetic field lines in the background,
a small range of induction
magnetization sites are formed on the near surface, and different magnetic
fields will be formed by
various materials and soft magnetic materials of different shapes. Soft
magnetic material with a
conductivity magnetic field and a tip (a variety of points, also including a
round bar form) in the
background magnetic field will be at the tip of a higher magnetic field than
the background
magnetic intensity, gradient magnetization field, the invention is based on
this magnetized field to
strongly capture the weak magnetic particles and the magnetic impurities in
the non-metallic
mineral particles in the material.
When the magnetic excitation system involved in the wet high intensity in the
invention works, it
will produce a background magnetic field area that can magnetization the soft
magnetic material,
here defines this area as a sorting area. Further, the magnetic excitation
system comprises of a
magnetic yoke, coil and heat exchanger, the coil generates a magnetic field
when it is energized,
and the magnetic field creates a semi-closed arc-shaped magnetic field region
in the coil and the
center of the magnetic yoke when it is converged and strengthened by the
magnetic yoke, the
magnetic field intensity of the field is changed with the input current of the
excitation coil, which is
the background magnetic field, and the region is the sorting region.
In order to introduce and discharge the pulp into the separation area, a
certain number of the flow
clearance can be set in the upper pole iron core and the lower magnetic pole
iron core which can
guide the ore pulp. As in the separation process some of the ore dressing
plants will add some
chemical agents to the pulp, so its separation slurry has different degrees of
corrosion, and these
CA 3015206 2018-09-13
corrosive pulp flow through the magnetic pole of the gap between the iron core
will cause
corrosion. lithe pole core is subjected to long-term corrosion, it will change
its original thickness,
thereby reducing the magnetic conductivity, resulting in weakening and
changing the background
field strength and magnetic field distribution of the wet high intensity
magnetic separator, and
ultimately affecting the stability of the sorting index; If the welding site
is seriously corroded for a
long time, it will affect its structural strength and service life. Even if it
is a pulp that does not
contain corrosive agents, the water contained in the long-term immersion will
also make the
magnetic pole iron core rust, although this part of the rust almost does not
affect the device's
magnetic properties and structural strength, but to the non-metallic minerals
with very low iron
content considering the magnetic material as impurities is particularly
important.
In order to solve the corrosive effect on the performance index and service
life, the upper pole iron
core and the lower magnetic pole iron core of the magnetic yoke part are
modular designed, and
according to the required level of protection for three different levels of
treatment: the first grade is
no special treatment, applicable to the general non-corrosive separation
process; and the second
grade is to spray water resistant and abrasion resistant coating on the
contact surface of the
magnetic pole iron core and the pulp, suitable for a slightly corrosive or non-
metallic mineral
separation process; and the third grade is to increase the replaceable
sacrificial anode on the
basis of the second grade, suitable for the separation process of pulp with
strong corrosive and
especially corrosive ions, because the sacrificial anode can be replaced at
any time, so this grade
has a stronger anti-corrosion capacity.
In addition, if the concentration of strong magnetic minerals in the
separation pulp is too high, the
strong magnetic minerals flowing into the magnetic poles can easily be
adsorbed in the sharp
corner of the upper magnetic pole iron core module, it will occur on the pole
iron core flow
clearance blockage phenomenon in the long run. In view of this special
condition, comparing with
the lower magnetic pole iron core module, the upper magnetic pole iron core
module is used to do
the acute angle roundness treatment and add nonmagnetic stainless steel
magnetic separation
processing around the flow clearance. This configuration can greatly weaken
the negative effect
caused by the tip induction magnetic field of the upper pole iron core flow
clearance and prevent
the flow clearance of the upper pole iron core from clogging up.
The coil in the wet high intensity magnetic separator of the invention is the
core part of the
background magnetic field source, the coil can produce the background magnetic
field onliy when
it is energized, so the working stability of the coil directly determines the
stability of the background
magnetic field, future determines the stability of the sorting index. In order
to obtain a stable
excitation environment, the wet high intensity magnetic separator coil part of
the invention adopts
the forced insulating coolant circulating cooling mode. The coil windings are
placed in the shell,
and an insulating bar is used to pad the insulation coolant flow passage in
the inner coil winding
and between the coil winding and the shell to ensure the coil insulation and
the heat generated by
the coil winding excitation will be taken away when the insulation coolant
flow through the passage.
However, because the main body of the invention is a magnetic separator, it is
necessary to
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CA 3015206 2018-09-13
combine the structure characteristics of wet high intensity magnetic separator
with the need of the
magnetic circuit in the process of making the coil; and since the coils are
just a part of the wet high
intensity magnetic separator, so the structure of the coils must be compact.
According to the need
of the magnetic field, the inner enclosure of the coil shell is made of non-
magnetic stainless-steel
material to prevent the magnetic field from being shorted out, while the upper
magnetic conductive
plate, the lower magnetic conductive plate and the outer enclosing plate are
manufactured by high
magnetic steel plate, which has the function of reducing the flux leakage and
the converging
magnetic field.
The coolant inlet is arranged at the lower part of the end of the coil length
direction, and the
.. corresponding coolant outlet is arranged at the upper part of the other end
which is far away from
the inlet. At the coolant inlet and outlet inside the coil shell there
provides the distributary cavity
and the conflux cavity respectively, it may cause the coolant flow more even
and the stability inside
the coil, avoids the generation of the flow dead angle, and guarantees the
coil winding heat
dissipation stability simultaneously also prevents the coolant from flushing
the coil winding for long
time that causes the winding damage. As the total amount of coolant required
in the coil and inside
the heat exchanger system is very large, so many liquids are routinely
injected with a liquid
injection pump. The drain valve of the coolant is arranged between the pump
and the coolant outlet
of the coil, and the outlet is arranged at the lowest point of the heat
exchanger device. This valve
can be used both in removing the insulation coolant that in the coil and the
heat exchanger and
can cooperate with the pump to inject the insulation coolant to the coil and
the heat exchanger.
Secondly, the sorting collection system can create a high strength inductive
magnetic field in the
division made by the magnetic excitation system of the wet high intensity
magnetic separator, and
use this induction magnetic field to capture the magnetic particles, then take
the magnetic particles
captured out of the division, and use the discharging water flushing the
particles into the magnetic
.. material collecting hopper, while the non-magnetic part is not captured, it
can flow through this
induction magnetic field freely, then enter into the non-magnetic material
collecting hopper, that is,
the separation process between magnetic material and non-magnetic material is
completed.
Sorting collection system comprises a ring, a ring drive part, a feeding
hopper, a flushing hopper, a
discharging water tank, a magnetic material collecting hopper, a non-magnetic
material collecting
hopper, a middling hopper, a pulsation mechanism, and a liquid level
observation hopper. A large
number of matrix boxes made of high conductivity magnetic soft magnetic
materials are carried in
the ring, and a ring structure is designed which can be fed into and out of
the sorting area
continuously. The sorting collection system also designs the ore feeding,
discharging mechanism
and magnetic material, non-magnetic material, middling collection mechanism,
and pulsation,
water washing mechanism helpful to improve the separation index, and the
observation
mechanism of separating liquid level which is necessary for sorting.
When the matrix box enters into the separation zone with the ring, the high
magnetic medium
made of by the high conductivity magnetic soft magnetic material is
magnetized, and forms a high
field strength, high gradient magnetization site at the tip, at this time the
material to be selected
17
CA 3015206 2018-09-13
enters into the wet high intensity magnetic separator from the feeding hopper,
then flow into the
ring through the flow clearance of the upper pole iron core. When the material
flows through the
ring it must go through this magnetic field area, at this time magnetic
material particles are
captured under the role of magnetic absorption, non-magnetic material
particles are free from the
.. role of magnetic force and flow through this magnetic field area into the
non-magnetic material
collecting hopper. The captured magnetic material rotates out of the
separation area with the ring,
after leaving the separation area, the magnetic medium's induced magnetic
field disappears, and
the magnetic trapping force disappears. When go to the top of the magnetic
material collecting
hopper, the captured material particles begin to fall and are collected by the
magnetic material
collecting hopper, and the material particles that fail to fall in time will
be discharged into the
magnetic material collecting hopper when transferred to the bottom of the
discharging water tank,
then the matrix box becomes clean again and then enters into sorting area with
the ring, and that
completes a sorting process.
The ring in the wet high intensity magnetic separator of the invention is the
core component of the
sorting collection system, and the matrix box is the most important part of
the ring. Because the
material is of many kinds and various forms, even the same type of mineral
generally, there may
be different differences such as different degrees of dissociation and
different magnetic particle
inlay size. In order to better adapt to the separation of these materials, the
matrix box of the wet
high intensity magnetic separator is modular designed, by changing the form
and arrangement of
.. soft magnetic material in the matrix box to make wet high intensity
magnetic separator has
stronger adaptability.
According to the different particle size of the site condition, the magnetic
content of materials and
the distribution of magnetic particle size, the matrix box module is divided
into many forms.
Selecting from the materials or forms, the high magnetic medium includes both
rod and mesh
media, as well as steel wool or any other form of magnetic material which can
be placed on the
ring and can produce induction magnetic field when using in the wet high
intensity magnetic
separator; Classified by the arrangement, the high magnetic medium includes
both tight
arrangement and loose arrangement, both uniform arrangement of the media gap
and matrix gap
gradient increasing or decreasing arrangement, both a single form of magnetic
conductionmatrix
arrangement and a variety of forms of magnetic conduction matrix blending
arrangement.
In the concrete application of the wet high intensity magnetic separator of
the invention, for the
pulp with corrosive material, the matrix box module is divided into three anti-
corrosion grades: the
first grade is the use of anti-corrosion material in the highly conductive
magnetic medium, which is
suitable for the general non-corrosive separation process; the second grade
provides overall
coating treatment of the matrix box module on the basis of first level, which
is suitable for the
separation process with slight corrosive working condition; the third grade
increases the sacrificial
anode corrosion on the basis of the second grade, which is suitable for the
separation process with
moderate and severe corrosion, especially the corrosive ionic working
condition. According to
different working conditions different matrix box modules are equipped with
the wet high intensity
18
CA 3015206 2018-09-13
magnetic separator, thereby enhancing the adaptive capacity of the wet high
intensity magnetic
separator and getting better and more stable sorting indicators.
In the production field, magnetic particles captured by magnetic media rotate
out of the separation
area with the ring, and the magnetic media induced magnetic field disappears
after leaving the
separation area, and the magnetism trapping force disappears. All the magnetic
particles in the
matrix box module should be flush into the magnetic material collecting hopper
when the ring
roates to the bottom of the discharging water tank, however, due to the
diversity and complexity of
the field conditions, the phenomenon of inadequate ore discharging is often
occurred, and the
inadequate ore discharging of the matrix box module will undoubtedly affect
the sorting effect after
the next step if it enters into the sorting area again. In order to discharge
the mine better, the
discharging water spray module is designed in the discharging water tank in
the wet high intensity
magnetic separator. By replacing this module, it is easy and quick to change
the size of the
blowhole (change the quantity of the water spray under the condition that the
discharging pressure
is not changed), the shape of the water spray (such as columnar, curtain,
fan), form (continuous,
pulse, parallel, cross) and a certain range of water spray position and spray
angle (with the
arrangement of the magnetic media in the matrix box module). Combined with the
working
condition field and the device parameters of the wet high intensity magnetic
separator and the type
of the matrix box module, then the better discharging effect can be achieved
by changing the water
spray module.
The pulsating push plate in the pulsation mechanism of the sorting collection
system is connected
with the right collection interval of the non-magnetic material collecting
hopper through the rubber
soft connection. The function of pulsating mechanism is to produce
reciprocating pulsating
vibration force and pass this pulsating vibration force to the pulp in the
magnetic material collecting
hopper.This pulsating shock force will extend along the pulp to the sorting
area, so that the pulp in
the induction magnetization field in the sorting area also has pulsating
oscillation, which can help
to reduce the inclusions caused by the adsorption and capture of magnetic
material particles under
the action of magnetic force and improve the purity of the selected magnetic
particle materials.
The safety and isolation system are the core component of the wet high
intensity magnetic
separator of the invention, which can guarantee the operation stability of the
device. As the feeding
.. of the wet high intensity magnetic separator generally is milled out
material, this part of the material
will inevitably be mixed with a number of large-grained materials or sundries,
and these
large-grained materials or debris in the feeding link blockage in any position
will have a serious
impact on the sorting index, so the invention provides the large particle
isolation mechanism in the
feeding process, which can prevent large particles of material plugging the
upper pole iron core
.. flow clearance or matrix box module of the wet high intensity magnetic
separator, thus reducing the
interference of the separation process, improving the sorting stability of the
device.
Because of the large amount of discharge water required to discharge ore, the
industrial circulating
water is usually used as discharging water in the production of the plant. In
industrial circulating
water, it is unavoidable that it contains large particles, especially
lightweight floats, which fail to
19
CA 3015206 2018-09-13
settle in time, may clog the blowhole in the discharging water tank. If a
blowhole is blocked, it will
directly lead to the matrix box which should be cleaned under the blowhole
cannot be well
discharged, when the matrix box enters into the sorting area again it will not
be able to complete
the separation of the normal work. In the past encountered such cases, it can
only be allowed to,
or turn down to clean the discharging water tank blowhole. Since the whole
process of separation
processes are highly correlated, and the wet high intensity magnetic separator
is the core device of
the whole process, so shutting down the wet high intensity separator must shut
down the entire
production line associated with all devices. The shutdown of these devices
will have a great impact
on production, while laissez-faire will also affect the separation of
indicators, reduce the recycling
utilization of resources, resulting in a huge waste of resources.
In order to solve this problem, before the entrance of discharging water there
provides the slag box
of discharging water of the wet high intensity magnetic separator, and the
bottom of the slag box is
provided with manual or automatic slag discharging valve which can
conveniently remove the
isolated impurities in time, thus ensure that the discharging water blowhole
does not occur
clogging phenomenon, reduce the effect of the separation index due to the
inadequate discharging
of the mine, and improve the stability of the sorting effect of the wet high
intensity magnetic
separator.
The coil is an important core component of the wet high intensity magnetic
separator. The coil
must be in a state of power to generate magnetic field, so that making the wet
high intensity
magnetic separator with magnetic power, and powering on the coil will lead to
heat generated in
the coil windings, if this part of the heat is not being transferred out in
time, it will burn the coil.
The wet high intensity magnetic separator cools the coil windings by closed
loop of the insulating
coolant liquid. The insulating coolant flows through the inside of the coil
and is fully thermally
exchanged with the coil windings, then the heat is brought to the outside of
the coil and the heat
exchange with the outside occurs at the heat exchanger, the heat generated by
the coil winding is
transfered to the cooling water or air, after cooling in the heat exchanger
the insulation coolant
flows into the coil inside again, forming the closed-circuit cycle. The
insulation coolant is not
directly contact with the outside world in the entire process, it will not
bring the external impurities
into the coil inside and it will not produce the phenomenon that often occurs
in water cooling coil
due to the scale and the impact of the coil heat rediation, ensuring that the
internal cleaning of the
coil system without interference, so that the coil can stable work.
In order to ensure the stability, safety and reliability of the coil, the
temperature probe is provided
on the coil coolant inlet pipeline and near the coolant outlet and at the top
of the insulation coolant,
real-time monitoring the temperature and temperature difference of the
insulation coolant in coil
inlet and outlet, when the temperature is too high or the temperature
difference is too large, it will
send out the fault alarm; The coil coolant inlet pipeline is provided with
flow switch, monitoring the
flow state of the insulating coolant and sending out the fault alarm when the
flow is not up to the
set requirement. When the above fault parameter reaches a preset high value,
the wet high
intensity magnetic separator will stop excitation automatically and enter into
the self-protection
CA 3015206 2018-09-13
mode and send out the alarm signal, thus ensuring the coil portion of the wet
high intensity
magnetic separator is not damaged. When the alarm is issued, the point of
failure and the cause of
the failure can be identified, and the cause of the failure is found and
resolved in time without any
significant impact on the production, thus ensuring the stability of the
operation of the device.
Further, as a strong magnetic separator, the inside of the device and around
the magnetic yoke are
filled with magnetic fields. The bearing that supports the rotating ring
operation is prone to electric
corrosion in the magnetic field, it is also easy to cause the phenomenon of
small magnetic particles
entering into the bearing, these conditions will shorten the life of the
bearing; the magnetic field
has more serious impact on the reducer whose internal gear main material is
the magnetic
conductive steel and motor containing rotor inside, it will increase the load
of the reducer invisibly,
reducing the working stability of the speed reducer and the motor.
In the invention, the magnetic flux is designed in accordance with the
divergence direction of the
magnetic field line, the magnetic line of force diverges outward with the coil
as an energized
solenoid and forms a magnetic line of force closed circuit and the magnet yoke
is designed
according to the direction of divergence of the magnetic line of force. Set
the magnetic material in
this direction can shield most of the magnetic field inside the magnetic
material.
Usually, due to the structure formed by the combination of the ring web,
middle shaft, middle shaft
bearing housing, gear group, reducer, motor is basically consistent with the
closed direction of the
magnetic line of force, so in any case the combination of the web, middle
shaft, middle shaft
bearing housing, gear group, reducer, motor will become a closed magnetic
circuit. Without any
treatment, there will be a large number of magnetic lines of force passing
through the bearing,
reducer, motor, reducing its working stability. To solve this problem, the
invention adopts cutting
isolation method, that is, by increasing the air gap on this closed circuit
and reducing the contact
area (all in order to increase the reluctance of the magnetic circuit), the
magnetic flux flowing
through the closed circuit can be reduced, thus reducing the effect of
bearing, reducer and motor
on the magneitc field force, extending the overall service life of the wet
high intensity magnetic
separator.
The wet high intensity magnetic separator also sets the motor protector for
all motors, protects and
emits alarms in time of lack of phase or overload, prevents the motor from
being damaged, and
sets up a shield for the running parts to ensure the safety of the operator.
In order to observe the
operation of the device, the observation window has been set up and a
protective net has been set
up on the observation window to prevent the operator from accidentally
contacting the running
parts to be harmed.
The adjustment system in the wet high intensity magnetic separator of the
invention is used to
adjust the working parameters, thereby improving the adaptability of the wet
high intensity
magnetic separator and getting better sorting index.
The separation field strength is the power source of the magnetic induction
magnetic field, the size
of the separation field strength is directly reflected in the sorting index,
so the stability of the
separation field strength is the most important index of working stability of
the wet high intensity
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CA 3015206 2018-09-13
magnetic separator. The size of the separation field strength is achieved by
changing the excitation
current of the wet high intensity magnetic separator, the excitation coil of
the wet high intensity
magnetic separator is powered by DC, so the excitation current must be
constant DC. Coil
windings in the process of electricity will produce heat, resulting in coil
temperature rise, with the
temperature rise of the changes the winding resistance value will also change.
The input voltage at
the plant site may not be very stable, and small changes will occur at any
time. In order to realize
the excitation current does not fluctuate with the external fluctuation and
ensure the stability of the
separation magnetic field, the excitation current of the wet high intensity
magnetic separator coil is
regulated through inputting preseted current in the current set unit, and then
through constant
current controller, controlling SCR (or diode-coupled IGBT) rectifier module
converts industrial
electricity into a preset dc input into coil, in the process of inputting the
current into the coil the hall
element or other similar function element is provided to monitor the current
and feedback to
constant current controller. Then the output voltage is adjusted by the
constant current controller to
match the detection value and the preset value, thus ensuring that the current
of the wet high
intensity magnetic separator input coil is in accordance with the preset
current of the current
setting unit.
According to the nature and quantity of the different feed materials, and the
requirements of the
sorting index that are hopeful to realize, we need to adjust the separation
field strength, and adjust
the ring speed and pulsation frequency and pulsating amplitude accordingly. In
order to adjust the
ring speed and pulsation frequency of the wet high intensity magnetic
separator, the wet high
intensity separator has set up the ring frequency converter and the pulsating
frequency changer
respectively in its front end and can realize the corresponding adjustment to
the ring speed and
pulsation frequency by adjusting the output frequency of the ring frequency
converter and the
pulsating frequency converter. In order to adjust the pulsating amplitude of
the wet high intensity
magnetic separator, the eccentric wheel in the pulsating box is modular
designed, which can be
adjusted by changing the eccentric wheel module to realize the pulsating
amplitude.
In addition, the sorting area of the wet high intensity magnetic separator of
the invention needs to
be immersed under the sorting liquid level in the sorting work. This is
because the material under
the sorting liquid level is looser, it is easier to realize the separation of
magnetic granular materials
and non-magnetic granular materials. At the same time, only the sorting area
immersed under the
sorting liquid level, the pulse power of the pulse box will be extended with
the pulp, so that the pulp
in the region of the induction magnetizing field also produces pulsating
vibration, the inclusion
phenomenon resulting from the adsorption and capture of magnetic particle
material under the
action of magnetic force is reduced, and the purity of the selected magnetic
particle material is
improved.
In order to observe the height of the liquid surface in time and provide the
basis for the regulation
of the sorting liquid surface, the wet high intensity magnetic separator of
the invention designed a
liquid level observation hopper communicated with the non-magnetic material
collecting hopper,
and the liquid level in the hopper can be monitored by manual or liquid level
meter. When the
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CA 3015206 2018-09-13
height of liquid level in the hopper is found to be changed, the opening of
one or more
non-magnetic material discharging valves can be manually or automatically
adjusted at the bottom
of the non-magnetic material collecting hopper to ensure that the liquid level
is stable near the
design height.
In order to obtain more pure magnetic materials, a rinsing process is set up
before the magnetic
material captured by the magnetic medium leaves the division selection. The
source of the rinsing
water is the same as the discharging water, and it is industrial circulating
water. By adjusting the
flushing water, it can selectively flush the trapped mineral and the impure
mineral in the captured
magnetic material from the matrix box module to allow it to enter the non-
magnetic material
collecting hopper, so as to obtain more pure magnetic materials.
In order to make the matrix box module clean without affecting the next period
of the separation, it
is very important to the ore-discharging of the discharging water tank.
Further, in order to discharge
the mine better, the discharging spray water module is designed in the
discharging water tank in
the wet high intensity magnetic separator. By replacing this module, it is
easy and quick to change
the size of the blowhole (change the quantity of the water spray under the
condition that the
discharging pressure is not changed), the shape of the water spray, form and a
certain range of
water spray position and spray angle. Combined with the working condition
field and the device
parameters of the wet high intensity magnetic separator and the type of the
matrix box module,
then the better discharging effect can be achieved by changing the water spray
module.
The invention is explained in detail by referring to the attached drawings of
the invention below.
In the wet high intensity magnetic separator proposed by the invention, the
magnetic yoke 1
comprises the left upper magnetic pole 110, the right upper magnetic pole 120,
the left magnetic
conductive plate 130, the right magnetic conductive plate 140 and the lower
magnetic pole 150.
wherein the left upper magnetic pole 110 and the right upper magnetic pole 120
are connected
with the upper magnetic pole yoke plate 111 and the upper magnetic pole iron
core module 112 by
welding or fastener fastening, the lower magnetic pole 150 is connected welded
or fastener
fastening by a two symmetrical lower magnetic pole yoke plate 151 and a lower
magnetic pole
core module 152 and a water retaining plate 153 located on its sides. The
upper magnetic pole
iron core module 112 and the lower magnetic pole iron core module 152 are
corresponding to the
up and down, a water retaining plate 153 is located on the sides of the upper
magnetic pole iron
core module 112 and the lower magnetic pole iron core module 152. A half-
closed arc space which
is opened at both ends of the arc direction is formed between the upper
magnetic pole iron core
module 112 and the lower magnetic pole core module 152 and the water retaining
plate 153. When
the wet high intensity magnetic separator works, this space can produce very
strong background
magnetic field, thus this space is the sorting space.
The upper magnetic pole iron core module 112 and the lower magnetic pole core
module 152 are
divided into three anti-corrosion grades, with different anti-corrosion
treatment on the surface
which contacting with the pulp. Wherein, the first grade is the metal surface
without any special
treatment, the second grade is the surface spraying antirust paint or other
kinds of anti-corrosion
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CA 3015206 2018-09-13
coating; the third grade is increasing the replaceable sacrificial anode on
the basis of the second
grade. In addition, comparing with the lower magnetic pole core module 152,
the upper magnetic
pole iron core module is also added to do the acute angle roundness treatment
and add
nonmagnetic stainless steel magnetic separation processing around the flow
clearance.
The coil 2 surrounds the lower magnetic pole core module 152 and is positioned
over the lower
magnetic pole yoke plate 151. The coil 2 comprises a coil shell 210 and a coil
winding 220 and an
insulating coolant 230 filled in the coil shell 210 which submerged the coil
winding 220. Wherein,
the coil shell 210 comprises the inner enclosing plate 211, the upper magnetic
conductive plate
212, the lower magnetic conductive plate 213, and the outer enclosing plate
214. The outer side of
the coil shell is also provided with an auxiliary structure such as oil pillow
and junction box. The
inner enclosing plate 211 of the coil shell 210 is made of non-magnetic steel
plate, while the upper
magnetic conductive plate 212, the lower magnetic conductive plate 213 and the
outer enclosing
plate 214 are made of high magnetic steel plate. The coil winding 220 is
placed in the coil shell 210,
coil winding 220 and coil shell 210 are separated by an insulating bar 240,
not only to ensure that
the coil winding 220 and the coil shell 210 are completely insulated, but also
to provide a channel
that the insulation coolant flow through. The coil winding 220 also sets up an
insulating bar 240 in
its internal when coils, also provides a channel that the insulation coolant
flow through in the
winding internal interval. A coolant inlet 215 is arranged on the lower end of
the coil shell 210. A
coolant outlet 216 is provided on the upper end of the coil shell 210, which
is away from the
.. coolant inlet 215. The insulating coolant 230 is imported into the coil
shell 210 by the coolant inlet
215, flows through the coil winding 220 and the pre-preseted insulating
coolant channel between
the coil winding 220 and the coil shell 210, fully heat exchanged with the
coil winding 220, and
then outflow from the coolant outlet 216. A distributary cavity 217 is
provided between the coolant
inlet 215 and the coil winding 220, a conflux cavity 218 is provided between
the coolant outlet 216
and the coil winding 220.
The heat exchange device 3 is installed at any position outside the coil 2,
and comprises pipeline
310, pump 320 and heat exchanger 330. Wherein, the inlet of the pump 320 is
connected with the
coolant outlet 216 of the coil 2 by the pipeline 310, and the outlet of the
pump 320 is connected
with the heat exchanger 330, while the other end of the heat exchanger 330 is
connected with the
coolant inlet 215 of the coil. According to different conditions of the field,
the heat exchanger 330
can be any conventional closed-loop heat exchanger. A drain valve 340 is
provided between the
pump 320 and the coolant outlet 216 of the coil, and the outlet of the drain
valve 340 is set at the
lowest position of the insulating coolant 230. This valve can be used both in
removing the
insulation coolant 230 that in the coil 2 and the heat exchange device 3 and
can cooperate with the
pump 320 to inject the insulation coolant 230 to the coil 2 and the heat
exchange device 3.
The ring 4 is located directly above the lower magnetic pole core module 152.
The ring 4
comprises a ring frame 410 and a matrix box module 420. The ring frame 410
comprises hub 411,
web 412, support ring 413, skeleton 414. Due to the need of magnetic field
design (for avoiding
magnetic short-circuit phenomenon), the support ring 413 and skeleton 414 are
made of
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CA 3015206 2018-09-13
non-magnetic stainless steel, skeleton 414 and support ring 413 isolates a
number of small space
on the ring frame 410 which can fix the matrix box module 420. The ring frame
410 is connected
with the ring drive parts 5 through the web 412 and hub 411, and the small
space used for fixing
the matrix box module will enter and leave the sorting space in turn by the
driving of the ring drive
parts 5.
The matrix box module 420 is installed between two skeletons 414 which are
circumferential
adjacent, in addition to that small wet high intensity magnetic separator is
arranged with a single
row of matrix box module 420, the matrix box module 420 on the two sides of
the web 412 is in the
same staggered arrangement. That is, the number of matrix boxes on both sides
of the web is the
same, and every time a matrix box module 420 starts to enter the sorting
space, there must be a
corresponding matrix box module 420 which is in half of the separation space.
The matrix box module 420 comprises two or more pieces of non-magnetic frame
plate 421 and a
high magnetic medium 422 which is located between the non-magnetic frame plate
421. According
to the difference of material granularity, the magnetic content of materials
and the distribution of
magnetic particle size in the separated slurry, the matrix box module 420 is
divided into many
forms. Selecting from the materials or forms, the high magnetic medium 422
includes both rod and
mesh media, as well as steel wool or any other form of high magnetic soft
magnetic material that
can be filled between the non-magnetic frame plate 421 and will eventually be
placed on the ring
frame 410 for producing induction magnetic field when using in the wet high
intensity magnetic
separator; Selecting from the arrangement, the high magnetic medium 422
includes both tight
arrangement and loose arrangement, both uniform arrangement of the media gap
and medium
gap gradient increasing or decreasing arrangement, both a single form of
magnetic conduction
media arrangement and a variety of forms of magnetic conduction media blending
arrangement.
When the pulp is corrosive, the matrix box module 420 is divided into three
anti-corrosion grades:
the first grade is high magnetic medium 422 using anti-corrosion material; the
second grade
provides overall coating treatment of the matrix box module 420 on the basis
of first level; the third
grade increases the sacrificial anode corrosion on the basis of the second
grade, for the sacrificial
anode can be replaced at any time, so this grade has a stronger anti-corrosion
capacity. Finally,
according to different working conditions, the wet high intensity magnetic
separator is equipped
with different matrix box module 420.
The middle shaft 510 of the ring drive parts 5 goes through the ring 4 from
the hub 411, the middle
shaft 510 and the hub 411 are connected by a magnetic flux-tight sleeve 520,
and the torque from
the middle shaft 510 can be transmitted to the ring 4 by the magnetic flux-
tight sleeve 520. The
middle shaft bearing housing 530 is positioned above the outer side of the
left upper magnetic pole
110 and the right upper magnetic pole 120, supporting the middle shaft 510 and
producing a
distance within ten mm between the ring 4 and the upper magnetic pole iron
core module 112 and
the lower magnetic pole iron core module 152. It is necessary to ensure that
no friction and
scraping between the upper magnetic pole iron core module 112 and the lower
magnetic pole iron
core module 152 when the ring is operating, and also the separation space is
fully utilized. The one
CA 3015206 2018-09-13
end of the middle shaft 510 is connected with the gear drive 540, and the
other end of the gear
drive 540 is connected to the reducer 560, so that the torque is transferred
to the ring 4 when the
motor 550 drives the reducer 560.
The middle shaft 510 is connected with the hub 411 by a magnetic flux-tight
sleeve 520 which can
reduce the transmission of the magnetic field on the web 412 along the middle
shaft bearing 531
and motor 550, reducer 560. The middle shaft bearing housing 530 and the left
upper magnetic
pole 110 and the right upper magnetic pole 120 is isolated through the non-
magnetic
stainless-steel plate, further reducing the magnetic flux of the middle shaft
bearing 531 and the ring
drive motor 550 and the reducer 560, and thus prolonging the service life of
the middle shaft
bearing 531 and the ring drive motor 550 and the reducer 560.
The feeding hopper 6 is arranged on the right side of middle shaft 510 that
located on the upper of
the left upper magnetic pole 110 and the right upper magnetic pole 120, and
the left side of the
middle shaft 510 is provided with a flushing hopper 7. The feeding hopper 6
and the flushing
hopper 7 are symmetrical about the webs 412. And the upper magnetic pole iron
core module 112,
which is connected with the feeding hopper 6, is provided with a flow
clearance 113 which leads
the pulp into the sorting area. The material pulp flows from the feeding
hopper 6 into the wet high
intensity magnetic separator, and then through the flow clearance 113 flows
into the division of the
ring 4. The flushing hopper 7 is equipped with rinsing water, the upper
magnetic pole iron core
module 112 connected with the flushing hopper 7 is provided with water gap 114
that the rinsing
water can flow into the separation area.The rinsing water can selectively
flush the trapped mineral
and the impure mineral in the captured magnetic material from the matrix box
module 420 to allow
it to enter the non-magnetic material collecting hopper11, to obtain more
purer magnetic materials.
The discharging water tank 8 is located above the ring 4 slightly to the left
position and crosses the
ring 4 along the ring axis. The discharging water tank 8 is equipped with the
discharging water
spraying module 810, it can form different discharging water by replacing
different discharging
water spraying module 810, that is, changing the water spraying position/water
spraying angle and
the amount of spraying water when using the same discharging water pressure.
The two sides of
the discharging water tank 8 are respectively provided with rinsing water
outlet 820 and water flow
exit 830, and all the water supply ports using industrial circulating water
are unified to the water
inlet of the discharing water tank 8. The discharging water tank 8 washes out
all the materials
adsorbed in the matrix box module 420 by spraying discharging water to the
ring 4. The lower part
of the rinsing water outlet 820 is connected with the water separator 840 in
the flushing hopper 7
through the water pipe, after the distribution of the water separator 840, it
can make the rinsing
water flow evenly into the flushing hopper 7, and then through the mine
clearance flow to the
division within the district of the transfer ring. The smuggled minerals and
the mineral impurities in
the captured magnetic materials are selectively flushed away from the matrix
box module to allow
them to enter the non-magnetic material collecting hopper so as to obtain more
purer magnetic
materials. The pipeline is extended from the water flow exit 830 to the gentle
slope position of the
magnetic material collecting hopper 9, controlling the direction of the water
flow exit is along the
26
CA 3015206 2018-09-13
discharge direction. For fast-settling and easily stacked materials, a small
amount of water can be
added to prevent material build-up.
The magnetic material collecting hopper 9 comprises collection part 910,
diversion part 920 and
summary part 930. Among them, the collection part 910 and the diversion part
920 are symmetrical
two parts about the web 412 and respectively locate on the two sides of the
web 412, the summary
part 930 is one part that symmetrical about the center of the web 412. The
collection part 910 is
above the upper magnetic pole iron core module 112, from the left of the
flushing hopper 7 inside
the ring 4 to the lower right of the discharging water tank 8 inside the ring
4. The summary part 930
is located at the lower part of the coil 2 which is in the left side of the
magnetic yoke 1. The
diversion part 920 is connected to the outlet of the collection part 910 and
the two ends of the
summary part 930. It can catch all the magnetic material which is taken to the
top of the collection
part 910 after leaving from the sorting area along the ring 4 to the summary
part 930, and then
discharge from the wet high intensity magnetic separator uniformly.
The middling hopper 10 is located on the left side of the lower magnetic pole
core module 152 and
clings to the lower magnetic pole core module 152. The feeding port is located
in connecting
portion of the lower left side of the ring 4 and the magnetic yoke 1 to the
left outer part of the ring 4,
and the width crosses the ring 4 axially along the ring 4. It can collect the
material which leaves
from the sorting area along the ring 4 but not to top portion of the magnetic
material collecting
hopper 9.
The non-magnetic material collecting hopper 11 is installed in the lower part
of the magnetic yoke 1
and is connected with the magnetic yoke 1, and it can catch the pulp flowing
out of the lower
magnetic pole core module 152 completely. The non-magnetic material collecting
hopper 11 is
divided into two disconnected collection interval, the right collection
interval 1110 is located below
the feeding hopper 6 and the middle shaft 510, the left collection interval
1120 is located below the
flushing hopper 7. Materials that are collected in both parts of the
collection interval space are
non-magnetic materials, most of the non-magnetic material flowing through the
ring 4 is entered
into the right collection interval 1110, while the small part is rotated with
the ring to the left
collection interval 1120, effected by the function of the rinsing water and
the gravity flowing into the
left collection interval 1120. The bottom of the two-collection interval space
is provided with one or
more non-magnetic material discharging valve 1130, which can control the
height of the mineral
slurry level of the sorting area by adjusting the valve opening. When the non-
magnetic material
collecting hopper 11 is removed from the lower magnetic pole core module 152,
it can be stabilized
on the device support to facilitate the separator dismantling of the split-
body transport and
reassembly of the wet high intensity magnetic separator.
The right collection interval of the non-magnetic material collecting hopper
is connected with the
pulsation mechanism 12. The pulsation mechanism 12 comprises pulsating box
1210, belt pulley
group 1220, pulsating motor 1230, pulsating push plate 1240, rubber soft
connection 1250. The
pulsating box 1210 is equipped with an eccentric wheel module 1211. After the
deceleration of the
driving the belt pulley group 1220, the pulsating motor 1230 drives the
eccentric wheel module
27
CA 3015206 2018-09-13
1211 in the pulsating box 1210, it can transfer the circular motion generated
by the motor into the
left-right reciprocating movement. The left end of the pulsating box 1210 is
provided with a push
rod 1212, the one end of the push rod 1212 is connected with the eccentric
wheel module 1211
and the other end is connected with the pulsating push plate 1240, and the
push rod 1212
transmits the reciprocating force of the eccentric wheel 1211 in the pulsating
box to the pulsating
push plate 1240. The outer side of the pulsating push plate 1240 and the right
collection interval
1110 of the non-magnetic material collecting hopper are connected through the
rubber soft
connection 1250. When the pulsating box is running, the left-right
reciprocating force can be
passed to the pulp which is located on the right side of the collection
interval 1110 through the
pulsating push plate 1240, it can make the pulp pulsating vibrate, and then
the pulsating vibration
is extended to the sorting area along the pulp.
In order to ensure the stable operation and safe operation of the device,
multiple security is set up
inside the device.
The coarse particle separation sieve plate 14 is provided in the feeding
hopper 6, or before feeding
there sets the same function unit, preventing large particles from entering
into the upper magnetic
pole iron core module 112 and the matrix box module 420 which may cause
clogging and affecting
the material passing and sorting indicators.
Adding the discharging water slag box 15 before the discharging water tank 8,
the discharging
water slag box 15 is equipped with a slanting slag sieve plate 1510, which can
prevent the large
particulate impurities of discharging water from entering into the discharging
water tank 8 jamming
the discharging water spraying hole and affecting the discharging effect and
sorting indicators. And
in the bottom of the discharging water slag box 15 there sets manual or
automatic slag drain valve
1520, which can manually or automatically clean the impurity particles
isolated from the
discharging the water slag box 15 regularly.
After flowing through the coil winding 220, the insulation coolant 230 in coil
2 can fully take the
heat generated by the coil winding 220, when power on to the heat exchange
device 3, and
discharge through the heat exchanger 330. During the whole process the
insulation coolant 230 is
in closed circuit, no outside pollution, all the exchange of heat with the
outside is completed in the
heat exchanger 330.
The middle shaft 510 and the ring 4 adopt two narrow magnetic flux-tight
sleeve 520 for connection,
in the case of torque transmission, reducing the contact area between the
middle shaft 510 and the
ring 4, therefore reducing the transmission of magnetic field which through
the web 412 and the
middle shaft 510 to the middle shaft bearing 531, the ring drive motor 550 and
the reducer 560;
Under the middle shaft bearing housing 530 and the ring drive motor 550 and
the reducer 560
there sets non-magnetic stainless steel plate, further reducing the amount of
the magnetic field
passing through in the middle shaft bearing 531 and the ring drive motor 550
and the reducer 560,
thereby extending the service life of the middle shaft bearing 531 and the
ring drive motor 550 and
the reducer 560.
The front-end of the ring drive motor 550 and the pulse motor 1230 both are
equipped with motor
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CA 3015206 2018-09-13
protector 16, when the detection of hyper-flow or lack of phase it can timely
protect and alarm.
Temperature probe 17 is provided on the coil coolant inlet pipeline 310 and
near the coolant outlet
216 and at the top of the insulation coolant 230, real-time monitoring the
temperature and
temperature difference of the insulation coolant in coil inlet and outlet,
when the temperature is too
high or the temperature difference is too large, it will send out the fault
alarm; The coil coolant inlet
pipeline 310 is provided with flow switch 18, monitoring the flow state of the
insulating coolant 230
and sending out the fault alarm when the flow is not up to the set
requirement.
All operating parts of the device are covered with shield 19, and the
observation window 1910 shall
be set for the parts needed to observe the operation. The observation window
1910 is protected by
a steel net to ensure that the personnel are not exposed to the running parts.
In order to realize the higher adaptability of the wet high intensity magnetic
separator, many
parameters can be adjusted accordingly.
The excitation current of the wet high intensity magnetic separator coil 2 is
regulated through
inputting preseted current in the current set unit 2011, and then through a
constant current
controller 2010, a controlling SCR (or a diode-coupled IGBT) rectifier module
20 converts industrial
electricity into a preset dc input into coil 2, in the process of inputting
the current into the coil 2 the
hall element or other similar function element 21 is provided to monitor the
current and feedback to
constant current controller. Then the output voltage is adjusted by the
constant current controller
2010 to match the detection value and the preset value, thus ensuring that the
current of the wet
high intensity magnetic separator input coil 2 is in accordance with the
preset current of the current
setting unit 2011.
The rotate speed of the ring 4 and the pulsation frequency of the pulsating
box 1210 of the wet
high intensity magnetic separator are realized by changing the output
frequency of relay ring
converter 22 and pulse frequency converter 23 in adjustment system
respectively.
The pulsating amplitude of the wet high intensity magnetic separator is
achieved by adjusting the
eccentricity of the eccentric wheel module 1211 in the pulsating box.
The level of the liquid height in the liquid level observation bucket 13 is
monitored by the manual or
liquid level meter 24, and then achieved manually or automatically by
adjusting the open degree of
one or more non-magnetic material discharging valve 1130 at the bottom of the
non-magnetic
material collecting hopper 11.
The rinsing water quantity is realized by adjusting the opening of the valves
of the rinsing water
outlet 820 that on the two sides of the discharging water tank 8, and then
provided to the flushing
hopper 7 evenly through the water separator 840 in the flushing hopper 7.
The specific working process of the wet high intensity magnetic separator of
the invention is as
follows:
When the coil 2 is power excited, under the joint action of magnetic yoke 1,
the two-arc surface of
the upper magnetic pole iron core module 112 and the lower magnetic pole core
module 152 and
the two water retaining plate form a background magnetic field and sorting
area which can
magnetize the soft magnetic material.
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CA 3015206 2018-09-13
The material flows in by the feeding hopper 6, first isolating the coarse
particles of the feed
material through the course granular separation sieve plate 14 to ensure that
the material will not
plug the iron core and matrix box module 420. The material passes through the
coarse particle
separating sieve plate 14 and then flows through the flow clearance 113 of the
magnetic pole iron
core module 112, then enters into the ring 4 in the separation area. The
numerous high magnetic
medium 422 in matrix box module 420 are magnetized under the background
magnetic field of the
separation region, and a small range of magnetized fields are formed on the
near surface of each
magnetic medium. When the material flows through the magnetized field, the
magnetic particles in
the material are adsorbed on the surface of the high magnetic medium 422,
while the particles
without magnetic and with insufficient magnetic purity are free to pass
through the matrix box
module 420 and then through the flow clearance of the lower magnetic pole core
module 152, and
then enter into the non-magnetic material collecting hopper 11, Finally
discharged from the wet
high intensity magnetic separator by the non-magnetic material discharging
valve 1130. The
magnetic particles adsorbed on the surface of the high magnetic medium 422 are
rotated
clockwise with the ring 4, when first rotated out of the separation of the
liquid surface and the
separation area, the partial particles of weak adsorption and the residual
pulp in the matrix box
module 420 flow outside of the ring, into the middling hopper 10, other
magnetic particle material
along the ring 4 continually transferred to the upper portion of the
collection part 910 of the
magnetic material collecting hopper 9, all rushed into the collection part 910
under the action of the
gravity and discharging water tank 8 and eventually summarized in the summary
part 930, and
discharged from the wet high intensity magnetic separator by the summary part
930. The material
in the separation area is affected by the pulsating vibration force produced
by the pulsating box
1210, the whole separation process is in a loose state, which is advantageous
to the separation of
magnetic and non-magnetic granular materials.
On the basis of the above said wet high intensity magnetic separator, a
vertical ring wet high
intensity magnetic separator with forced oil cooling can be obtained by
replacing part parts or
removing part parts or improving the function of the parts, and the vertical
ring wet high intensity
magnetic separator with forced oil cooling can be more applicable or applied.
The vertical ring wet high intensity magnetic separator with forced oil
cooling comprises seven
parts: magnetic excitation system, sorting system, pulsation system,
collection system, supporting
system, driving system, protection system; The magnetic excitation system
provides working
magnetic field, sorting system provides continuously separating the fine
tailings, and the pulsating
system provides pulsating effect to the slurry of the vertical ring wet high
intensity magnetic
separator with forced oil cooling; The collection system is used for feeding,
flushing, collecting the
fine tailings, and adjusting the level of the liquid. The supporting system is
fixedly connected with
the field foundation and supports the main body of the device; the driving
system provides power
for the ring and pulsation of the vertical ring wet high intensity magnetic
separator with forced oil
cooling; The protection system is used to protect the safety of persons and
device. The vertical
ring wet high intensity magnetic separator with forced oil cooling is a kind
of electromagnetic
Date Recue/Date Received 2021-04-07
separation equipment that provides wet method for magnetic mineral enrichment
and purifying the
non-magnetic minerals except miscellaneous.
After dressing practice and continuous improvement for many years, the
vertical ring wet high
intensity magnetic separator with forced oil cooling has a higher separation
background field
strength, and also solves the problem of high temperature rising and cooling
uneven in coil, easy
stacker in the upper pole, easy worn of the concentrate tank, and the liquid
level inconveniently be
adjusted.
In the vertical ring wet high intensity magnetic separator with forced oil
cooling provided by the
invention, the material is supplied from the interior of the ring to pass down
through the ring from
the upper pole, and the magnetic material in the material is adsorbed to the
ring and brought to
leave the field above the ring with the ring rotation; the discharging water
from outside the ring is
used for lateral flushing the ring, and the magnetic material is collected
into the magnetic material
collecting hopper; the non-magnetic material is discharged from the non-
magnetic material
collecting hopper under the device; the reciprocating piston motion of
pulsation mechanism makes
the material into a loose state in the separation area. The center of magnetic
yoke of the magnetic
excitation system is provided with a flow clearance for material discharging
along the direction of
magnetic field, the flow clearance distributed along the magnetic field and
there is no excess air
gap in the magnetic circuit, improving the strength of the separation area;
the magnetic yoke is
composed of a plurality of soft magnetic materials spliced, and each splicing
part is connected
without the traditional long bolt structure through the hole drilled in the
soft magnetic materials, and
the connection is provided with upper and lower pole ear and an positioning
structure to reduce the
difficulty for assembling the magnetic yoke; the lower magnetic pole of the
yoke is assembled with
the water retaining plate whose material in working air gap part is non-
magnetic material, and the
water retaining plate cooperating with the lower magnetic pole improves the
surface height of the
pulp to make the lower part of the ring immersed under the liquid level of the
pulp.
The following is further explained by Figure 23 - Figure 32, and the vertical
ring wet high intensity
magnetic separator with forced oil cooling is assembled with the magnetic yoke
and the coil
assembly which is composed of a coil and a heat exchanger, and the upper part
of the coil
surrounding the lower magnetic pole 150 is arranged into the magnetic yoke.
The magnet yoke is buckling-closing formed with two mountain words shaped yoke
of which both
sides contact, and there is the air gap between the yoke, and the shape of the
air gap is circular
arc, and the magnetic yoke gather the magnetic field produced by the coil at
the middle gap to
form a background magnetic field. The magnetic yoke mainly comprises an upper
magnetic pole
(110, 120), a lower magnetic pole 150, a magnetic conductive plate (130, 140),
a water retaining
plate 153 and an up and down magnetic connector 160. As shown in Figure 25,
the upper
magnetic pole (110,120) and the lower magnetic pole 150 are fixed together by
the magnetic
conductive plate (130,140), and the water retaining plate 153 is fixed on the
lower magnetic pole
150, and the magnetic circuit is shown by the arrow in the figure. The upper
magnetic pole (110,
31
Date Recue/Date Received 2021-04-07
120) and the lower magnetic pole 150 is provided with a feeding hole which is
arranged along the
magnetic line of force direction, there are no excess air gap on the magnetic
circuit; the lower
surface of the upper magnetic pole (110, 120) and the upper surface of the
lower magnetic pole
150 are circular arc surface, and work air gaps are formed among them, and the
upper magnetic
pole (110, 120) is composed of two left-right symmetry parts, the middle gap
is the active channel
of a web 412, and the flow clearance of the upper magnetic pole (110, 120)
near the web 412 is an
open structure to effectively prevent material stacking along the web 412. The
magnetic conductive
plate (130, 140) is used for connecting the upper magnetic pole (110, 120) and
the lower magnetic
pole 150 and also magnetic conducting function, and is bolting connected by an
up and down
magnetic connector 160, and the up and down magnetic connector 160 is provided
with a conical
positioning column which is convenient for positioning and mounting. The water
retaining plate 153
is fixed on the upper magnetic pole (110, 120), which can effectively improve
the pulp liquid level
when the device is working.
The coil is wound by an electromagnetic wire, and the magnetic field is
generated by the power
supply, and the magnetic field is finally gathered into the air gap of the
magnetic yoke under the
action of the magnetic yoke. The coil mainly comprises a coil winding 220, a
coil shell 210, an
insulating bar 240, an insulating bar bracket 241 and an expansion box 250.
The coil winding 220
is arranged in the coil shell 210, and the insulating bar bracket 241 is used
for supporting the coil
winding 220 and fixing the insulating bar 240, and the expansion box 250 is
arranged above the
coil shell 210.The coil winding 220 is a multilayer structure, each layer
separated by an insulating
bar 240; the insulating bar bracket 241 is strip shape, hollowed in the
middle, surrounded by a
mountain shape concave or convex structure, and evenly distributed around the
coil winding
220,and the insulating bar 240 is jammed in the middle of the insulating bar
bracket 241 and in a
convex position of the mountain shaped structure; the coil shell 210 is a
cavity structure which is
filled with insulating coolant, and the insulating bar bracket 241 is fixed
together with the upper and
the lower surface of the inner side of the coil shell 210 to form a structure
used for supporting the
coil winding 220; and the expansion box 250 acts an integrated expansion
buffer, coil outlet, dryer
filter function.
The heat exchanger 330 is communicated with the coil through a pipeline; and
the insulating
coolant is circulated between the coil and the heat exchanger 330 to bring the
heat generated by
the coil to the outside, so that the coil works under a reasonable
temperature. The cooling system
is located under the side of the coil and mainly comprises an pump 320 and a
heat exchanger 330.
The pump 320 and the heat exchanger 330 are connected through a pipeline and
connected with
the coil shell 210, and the pump 320 pumps out the hot insulating coolant
above the coil, and after
cooling through the heat exchanger 330, the insulating coolant after the
cooling is sent back from
the bottom to the coil to form a forced circulation cooling.
The sorting system comprises a ring and a discharging device. The main body of
the ring is ring
shape, and whose lower part pass through the middle air gap of the yoke and is
rotated
32
CA 3015206 2018-09-13
continuously around the main shaft under force to bring the magnetic minerals
outside the
magnetic field and make separation of magnetic minerals and non-magnetic
minerals. The ring
mainly comprises a ring frame 410, a middle shaft 510 and a matrix box module
420. The ring
frame 410 is an upper hollow runner structure to form an installation space of
the magnetic matrix
box module 420; the web 412 is a metal plate whose center has a hole, and the
web 412 is welded
in the middle position of the ring frame 410; the middle shaft 510 is fixed by
an expansion sleeve
through the center hole of the web 412, a bearing housing is arranged on both
sides of the middle
shaft 510, and the bearing is located on the upper magnetic pole (110,120),
and one end of the
middle shaft 510 is provided with a transmission big gear. The matrix box
module 420 is a box
body structure made of high conductivity magnetic material, which is fixed on
the ring frame 410, a
unit material of the box body can be a rod, a thread rod, a polygon, a mesh,
etc.
The discharging device is arranged above the outer side of the ring main body,
and connected with
an external water supply pipe, and spray water to the upper ring main body and
collect the
magnetic minerals absorbed on the ring main body into the magnetic material
collecting hopper.
The discharging device mainly comprises a discharging water slag box 15 and a
discharging water
tank 8. The discharging water slag box 15 is a box body structure, and both
ends of the box body
are connected with flanges, which are respectively connected with the
discharging water tank 8
and the external water supply pipe, and the inner part of the discharging
water slag box 15 is
provided with an inclined filtering net which is used for filtering the
impurities in the water to
discharge from the lower part of the box body. The pulsation system changes
periodically the
volume of the collection interval on the right side of the non-magnetic
materials collecting hopper
to make the pulp within the device into a reciprocating motion, and to
disperse the minerals within
the pulp. The pulsation system comprises a pulsating box 1210, a pulsating
push plate 1240 and a
rubber soft connection 1250. The pulsating box 1210 is a box body structure,
and an output rod is
arranged on the front end, and an eccentric wheel inside the pulsating box,
the side of the box is
with a driven belt wheel, the driven belt wheel can drive the eccentric wheel
mechanism to rotate
and output the reciprocating movement on the push rod. The pulsating push
plate 1240 is a
circular metal plate, the metal plate center is connected with the output rod
of the pulsating box
1210. The rubber soft connection 1250 is rubber soft material and with a
circular ring shape, and
the ring body is U shaped, and both sides of U shaped ring is respectively the
outer ring surface
and inner ring surface of the ring, and the outer ring surface of the U shaped
is fixed together with
the right collection section of non-magnetic material collecting hopper, and
the inner surface of the
U shaped is fixed together with the pulsating push plate 1240.
The collection system is provided for the device to the mine, water supply,
collection of magnetic
and non-magnetic minerals, liquid level observation and other functions. The
collection system
comprises a feeding hopper 6, a flushing hopper 7, a collection part 910, a
diversion part 920, a
summary part 930, a non-magnetic material collecting hopper 11, a valve
adjusting rod 1131 and a
liquid level observation hopper 13. The feeding hopper 6 and the flushing
hopper 7 are welded into
33
CA 3015206 2018-09-13
a box body structure, which is arranged on the upper magnetic pole (110, 120)
and is connected
with the material passage of the upper magnetic pole (110, 120). The magnetic
material collecting
hopper is a tank structure and symmetrically arranged under the inner side of
the ring, a certain
angle is formed between the lower surface of the magnetic material collecting
hopper and the
horizontal plane, and a discharge port is provided on the lower position under
the surface of the
magnetic material collecting hopper. The diversion part 920 is a tank
structure, which is installed
under the discharge port of the magnetic material collecting hopper and the
concentrate is
transported into the summary part 930 through the pipeline near the tail of
the diversion part 920.
As shown in Figure 31, the summary part 930 is a tank structure, whose bottom
surface is formed
with both sides inclined plane and the intermediate discharge port. A
plurality of vertical plate is
fixed along the inclined plane from top to bottom, and the first vertical
plate is higher than the other
vertical plate, the structure can make the pulp precipitate formed when
flowing in a bottom surface
to form the natural wear layer and increase the service life of the
concentrate tank. The
non-magnetic material collecting hopper 11 is arranged under the feeding holes
of the lower
magnetic pole 150, and a closing structure is formed from top to bottom in the
hopper body, under
the non-magnetic material collecting hopper 11 is equipped with adjustable
valve. The valve
adjusting rod 1131 is an adjusting mechanism which is composed of a hand
wheel, an extension
rod and a flexible shaft, and is arranged on the side of the device, and the
valve regulating point of
the non-magnetic material collecting hopper 11 is extended to the upper part
of the device. The
liquid level observation hopper 13 is a box structure and with opening above
the box body, and the
middle of the bottom surface of the box body is provided with a vertical
plate, in bottom surface of
both sides of which there are each outlet, one outlet is connected with the
right collection interval
of the non-magnetic material collecting hopper, and the whole box body is
located on the side of
the device, and adjacent the adjusting hand wheel of the valve adjusting rod
1131.
The supporting system is used for supporting the device and fixing the device
on the ground. The
supporting system mainly includes the bracket 25, and the bracket 25 is welded
by a section steel
after the optimization design. The bottom of the bracket 25 is square frame
shape and one side of
the square frame projecting a trapezoidal support for the installation of the
pulsating box 1210. On
the bottom square frame of the bracket 25, four upright columns are set and
both sides of each
upright column are configured with a reinforced section steel to increase the
intensity of support,
the upper faces of four upright columns are in the same level, the lower
magnetic pole 150 setting
on the four upright columns.
The driving system makes an outer electric energy into the kinetic energy of
motion and provides a
power source for rotating parts of the invention, and the driving system
comprises a ring drive part
5, a pulsating motor 1230, a driving belt wheel group and an electronic
component. The ring drive
parts 5 comprises a reducer, a ring drive motor and a drive gear, and a small
gear of the drive gear
is sheathed around the output shaft of the reducer, and the small gear of the
drive gear is engaged
with a big gear at the end of the middle shaft 510 and able to drive the big
gear rotation by reducer
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CA 3015206 2018-09-13
to drive the ring rotation when the ring drive motor rotation. The center of
belt wheel end of the
driving belt wheel group is sheathed around the output shaft of the pulsating
motor 1230, and
through the built-in belt the driving belt wheel group makes the output power
of the pulsating motor
1230 output to the pulsating box 1210 to drive the eccentric wheel to rotate.
In electronic control part of the invention, the main circuit power and the
current regulator PCB
power when the breaker QF1 is closed, the frequency converter BP1 power when
the breaker QF2
is closed, and the ring motor M1 is energized operation when the intermediate
relay KA1 is closed,
and the output speed of the ring motor M1 is adjusted by adjusting the
frequency converter BPI.
The frequency converter BP2 power when the breaker QF3 is closed, and the
pulsating motor M2
is energized operation when the intermediate relay KA2 is closed, and the
output speed of the ring
motor M2 is adjusted by adjusting the frequency converter BP2. The oil pump
motor M3 is
energized operation when the breaker OF4 is closed and AC contactor KM2 is
closed, a thermal
overload relay FR1 is cut off when the oil pump motor M3 overload overcurrent,
and the power
supply of the oil pump motor M3 is cut off to play a protective role. A
silicon-controlled rectifier
.. module VC1 converts three-phase AC into DC current to flow through an
excitation coil YA when
the breaker OF5 is closed and AC contactor KM1 is closed, and the conduction
state of the
silicon-controlled rectifier module VC1 can be adjusted by a current regulator
PCB so as to adjust
the size of current flow through the excitation coil YA.
The protection system is made of thin steel plate through welding and bending,
which can separate
the device from the outside to protect the device and the safety of personnel.
The shield 19 of the
protection system comprises a ring cover, a gear cover and a belt wheel cover.
The ring cover is
divided into about two parts, each part is composed of one cambered plate and
two fan-shaped
plate welded to form a structure of arc groove, and the about two parts locate
on both sides of the
flushing hopper 7 and upside down on the ring body; the gear cover and the
belt wheel cover both
.. are unequal notch structure, and a hole is arranged at two centers of the
notch and the two holes
are not in the same plane used for the motor shaft and gear shaft passing
through, and the gear
cover is covered completely the gear inside,and the belt wheel cover is
covered completely the
belt wheel inside.
The traditional strong magnetic separator has the following problems: when the
device works, a
closed structure on the side of the upper pole near the ring causes a leakage
material
accumulated above the upper pole from the top; when a yoke is installed with
the long bolt through
the yoke, positioning and installation is inconvenient; the magnetic material
is adopted in a water
retaining plate, which causes the partial magnetic flux shielding; the coil is
cooled by a coolant
liquid horizontal flow, which causes uneven heat dissipation and a short
service life of the cooling
.. coil; the bottom of the concentrate tank is a plane, which causes the
bottom of the concentrate tank
easy wear and leakage when a pulp rapid impacting and flowing; the valve
regulation point of the
tailings hopper is below the device, which causes that the valve of the
tailings hopper can't
adjusted while observing the liquid level of the overflow hopper and extremely
inconvenient
CA 3015206 2018-09-13
adjustment. In view of the above problems, the vertical ring wet high
intensity magnetic separator
with forced oil cooling made the following improvements: the side of the upper
magnetic pole (110,
120) near the ring is opened, and the leakage material above flows directly
from the open position
to the device to effectively prevent the material accumulated above the upper
pole (110, 120); the
upper magnetic pole (110, 120), the lower magnetic pole 150 is connected with
the magnetic
conductive plate (130, 140) through an up and down magnetic connector 160
which is connected
by a bolt and using the tapered positioning structure which greatly facilitate
the yoke mounting. The
water retaining plate 153 is made of stainless steel, making effective use of
maximum flux. Using
the method of coil forced heat exchange and cooling, the coil winding 220 is a
multilayer structure,
which is immersed in the insulating coolant and placed in the insulating bar
bracket 241, the
insulating coolant in the winding flows from bottom to top and the hot oil is
outflowed from the top
of coil and flows into the heat exchanger cooling, and cooled cold oil flows
then into the coil from
below. The flow pattern is consistent with the physical characteristics of the
self-convection of hot
liquid upward cooling down within liquid and greatly improves the uniformity
of heat dissipation,
and improve the service life of the coil; the summary part 930 increases the
small vertical plate
structure at the bottom of the tank, so that the pulp can form a deposit when
the pulp flows in the
bottom surface, and to form the natural wear resistant layer, and the service
life of the concentrate
collecting groove is increased; the regulating handwheel of the valve
adjusting rod 1131 located
near the liquid level observation hopper 13, which can observe the pulp level
in the liquid level
observation hopper 13 to regulate valve opening of the non-magnetic material
collecting hopper 11
and cause convenient adjustment of a device.
Further, a skeleton structure is preferably used in the ring of the vertical
ring wet high intensity
magnetic separator with forced oil cooling of the invention, a matrix box
module 420 is fixed on the
ring frame through bolts, the ring frames are made of stainless steel
material; and the shape of the
magnetic medium can be rods, polygon, mesh, dentate, thread, steel wool and
other structures;
and an expansion sleeve connection structure is used to connect the middle
shaft of the ring with
the ring; the feeding hopper is symmetrically arranged on both sides of the
ring, and the feeding
hopper is installed on the feeding channel in the yoke. The magnetic hoppers
are symmetrically
arranged at inner both sides of the rings, the magnetic hopper on one side of
the ring can be one
hopper body or also be multiple hopper bodies; the bottom surface of the
magnetic hopper has a
certain angle with the horizontal surface , so as to realize the pulp self-
flowing in the magnetic
hopper; the traditional way of pipeline was abandoned in the magnetic hopper
and going mine in
tank is adopted to reduce the blockage of magnetic hoppers and easy to clean.
A discharging point
is located above the magnetic hopper, and the means of fluid washing a
magnetic medium on the
ring is used to unload ore, in which fluid can be air, water or a mixture of
water and air.
Further, the front end of the discharging device in the vertical ring wet high
intensity magnetic
separator with forced oil cooling is provided preferably with a slag filtering
device to filter large
particle impurities in a discharging water, and the forced heat exchange is
used to cool the coil
36
Date Recue/Date Received 2021-04-07
whose winding is multilayer structure to increase the contact area between the
winding and the
heat exchange medium and improve the efficiency of heat transfer. The heat
exchange medium
flows from one side of the coil to the other symmetrical side of the coil, and
the heat exchange
medium can be insulated coolant, air or water. As using an insulating coolant
cooling the coil, the
.. winding of the coil is directly immersed in an insulating coolant, the coil
is provided with an
insulating coolant expansion box, and the number of the expansion box can be
one or more, the
expansion box is provided with a structure of a respirator, a junction hopper,
a liquid level
observation etc. A pulsation box pushes the pulsating push plate to do
reciprocating motion, and
the pulsating push plate is connected with the right collection interval of
the non-magnetic hopper
through rubber or other soft waterproof material to seal pulp in the non-
magnetic hopper.
Further, in the vertical ring wet high intensity magnetic separator with
forced oil cooling of the
invention, a pulsation stroke and pulsation frequency of the pulsation box is
preferably adjustable
to adapt to different ore properties, and the pulsation stroke refers to the
amplitude of reciprocating
motion, the pulsation frequency refers to the speed of reciprocating motion.
The non-magnetic
hopper is positioned below the magnetic yoke, the valve is provided under the
hopper body to
adjust the height of liquid level by adjusting the valve opening and feeding
quantity. A liquid level
observation hopper is provided on the side of the device, and the liquid level
observation hopper is
connected with the non-magnetic hopper to control the pulp surface height in
the liquid level
observation hopper by manual or automatic adjustment of the valve opening of
the valve below the
.. nonmagnetic material hopper. The valve of the nonmagnetic material hopper
is provided with an
extension rod, and the valve opening can be adjusted outside device; the
regulating point can also
be transferred to the top of the device through the flexible shaft or other
steering device to observe
the height of the liquid level while adjusting the valve. The ring cover can
cover the whole ring to
protect the personal safety, and each part of the cover body is connected with
an inserting type to
prevent slurry spill. The cover body is provided with an observation window.
The bracket is made
of section steel welded together, and the bracket is composed of two parts of
a magnetic yoke
bracket and a pulsation hopper bracket, wherein the magnetic yoke bracket and
the pulsation
hopper bracket are connected by welding or bolt fastening mode, there is a
positioning structure
on the bracket.
Adjusting different parameter and replacing different component module, based
on the difference
of the selected material and working environment of the wet high intensity
magnetic separator or
the vertical ring wet high intensity magnetic separator with forced oil
cooling, it will realize the
biggest degree of adaptation with the using site and therefore gain a better,
more stable separation
index.
The invention has the advantages of reasonable and novel structure, high
safety, energy saving
and beautiful appearance, while ensuring the good separation index.
37
Date Recue/Date Received 2021-04-07
The above is only preferred specific embodiments of the invention; however,
the scope of
protection of the invention is not limited to this. Any modification or
substitution that is easy to
conceive by a person skilled in the art within the technical scope disclosed
in the invention should
be included in the scope of protection of the invention. It should be
understood by an ordinary
person in the art that any variety of modification could be made in format and
detail without
departing from the spirit and scope of the invention defined by the appended
claims.
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CA 3015206 2018-09-13
