Canadian Patents Database / Patent 2852813 Summary
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|(12) Patent:||(11) CA 2852813|
|(54) English Title:||COMPOSITE BRIQUETTE FOR STEELMAKING OR IRONMAKING FURNACE CHARGE|
|(54) French Title:||BRIQUETTE DE COMPOSITE POUR FOUR DE SIDERURGIE OU DE FORGE|
|(51) International Patent Classification (IPC):||
|(72) Inventors (Country):||
|(73) Owners (Country):||
|(71) Applicants (Country):||
|(74) Agent:||SIM & MCBURNEY|
|(22) Filed Date:||2014-05-29|
|(41) Open to Public Inspection:||2014-08-11|
|(30) Availability of licence:||N/A|
|(30) Language of filing:||English|
A briquette for addition to the charge in a steelmaking or ironmaking furnace comprises a quantity of carbon fines, a material in powdered form, the material selected from the group consisting of iron powder and iron oxide, the material densifying the briquette and suppressing the slippery nature of the carbon fines, a quantity of magnesium carbonate, and a binder.
Une briquette pour ajout à la charge dans un four de sidérurgie ou de forge comprend une quantité de fines de carbone, une matière sous forme de poudre, la matière étant choisie à partir du groupe constitué par de la poudre de fer et de loxyde de fer, la matière densifiant la briquette et éliminant le caractère glissant des fines de carbone, une quantité de carbonate de magnésium et un liant.
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What is claimed is:
1. A composite briquette for addition to a charge in a steelmaking
furnace, the briquette comprising:
a quantity of carbon fines;
a quantity of iron powder, the iron powder densifying the briquette and
suppressing the slippery nature of the carbon fines;
a quantity of magnesium carbonate;
a quantity of limestone; and
wherein 50 % of the total briquette weight is the carbon fines, 25 % of
the total briquette weight is the iron powder, and the remainder of the total
weight, apart from the binder, is magnesium carbonate and limestone,
and wherein the binder comprises molasses and lime.
2. The briquette of claim 1, wherein the briquette comprises from 1 to 10
% by weight of the binder.
3. Use of the briquette of claim 1 or 2 as addition to the charge in the
steelmaking furnace, the furnace being an electric arc furnace or a basic
4. A method of improving a slag-covered charge in a steelmaking
furnace, the slag-covered charge comprising a charge covered with slag, the
making a mixture of: a quantity of carbon fines, a quantity of iron
powder, a quantity of magnesium carbonate, a quantity of limestone, and a
wherein the binder comprises molasses and lime;
compressing a portion of said mixture in a suitable mold to make a
briquette, said iron powder densifying the briquette and suppressing the
nature of the carbon fines, wherein 50 % of the total briquette weight is the
fines, 25 % of the total briquette weight is the iron powder, and the
remainder of the
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total briquette weight, apart from the binder, is magnesium carbonate and
introducing said briquette to the charge below the slag in the
steelmaking furnace so that said iron powder contained in the briquette causes
briquette to sink into the charge.
5. The method of claim 4, wherein the mixture comprises from 1 to 10 %
by weight of the binder.
6. The method of claim 5 or 6, whereby upon introducing the briquette to
the charge, CO2 is generated such that the CO2 foams the slag from underneath.
7. The method of any one of claims 4 to 6, wherein the furnace is an
electric arc furnace or a basic oxygen furnace.
Sorry, the representative drawing for patent document number 2852813 was not found.
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|(41) Open to Public Inspection||2014-08-11|
|Next Payment if small entity fee||2018-05-29||$50.00|
|Next Payment if standard fee||2018-05-29||$100.00|
Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following
- the reinstatement fee set out in Item 7 of Schedule II of the Patent Rules;
- the late payment fee set out in Item 22.1 of Schedule II of the Patent Rules; or
- the additional fee for late payment set out in Items 31 and 32 of Schedule II of the Patent Rules.
|Fee Type||Anniversary Year||Due Date||Amount Paid||Paid Date|
|Request for Examination||$400.00||2014-05-29|
|Maintenance Fee - Application - New Act||2||2016-05-30||$50.00||2016-05-02|
|Maintenance Fee - Application - New Act||3||2017-05-29||$50.00||2017-05-25|