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(12) Patent Application: | (11) CA 2972640 |
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(54) English Title: | COVER FOR AN ELECTROLYSIS CELL FOR PRODUCING ALUMINIUM |
(54) French Title: | REVETEMENT D'ELECTROLYSEUR POUR LA PRODUCTION D'ALUMINIUM |
Status: | Deemed Abandoned and Beyond the Period of Reinstatement - Pending Response to Notice of Disregarded Communication |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | GOWLING WLG (CANADA) LLP |
(74) Associate agent: | |
(45) Issued: | |
(86) PCT Filing Date: | 2015-10-28 |
(87) Open to Public Inspection: | 2016-07-07 |
Examination requested: | 2017-06-28 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | Yes |
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(86) PCT Filing Number: | PCT/RU2015/000716 |
(87) International Publication Number: | WO 2016108726 |
(85) National Entry: | 2017-06-28 |
(30) Application Priority Data: | ||||||
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?The invention relates to non-ferrous metallurgy, more particularly to producing aluminium by electrolysis, and even more particularly to a structural element for covering the space above a melt in an electrolysis cell for producing aluminium by the electrolysis of cryolite-alumina melts. In a cover for an electrolysis cell for producing aluminium, which is in contact with a vapour-gas phase when the electrolysis cell is in operation and which is in the form of central and peripheral sections which are moveably arranged relative to each other, the central and peripheral sections are made from a corrosion-resistant and erosion-resistant material which comprises 80.0-99.0 wt% of fluorophlogopite and 20.0-1.0 wt% of a refractory filler. The central sections of the cover may be permanently fixed on each anode rod, and the peripheral sections may be configured as convex panels rigidly and removably fixed on the top surface of a cathode and supported by the central section of the cover. Moreover, the refractory filler may be chosen from the following chemical substances: clay, calcium fluoride, rutile, sodium aluminosilicate, fluorapophyllite, nepheline, olivine, magnesium fluoride, and spinel. The end and side joints of the central and peripheral covers may be coated with a sealant layer in the form of a layer of alumina, and the central section of the cover may be provided with apertures. The use of this invention provides for the hermetic sealing of the cover, the reliability and safety of the structure, and a reduction in energy consumption.
L'invention se rapporte au domaine de la métallurgie des métaux non ferreux, notamment à la production électrolytique d'aluminium, et concerne un élément d'une structure de revêtement d'un espace au-dessus d'un bain de fusion d'électrolyseur afin de produire de l'aluminium selon un procédé d'électrolyse de bains de fusion de cryolite-alumine. Dans le revêtement d'électrolyseur de production d'aluminium sont formées des sections centrales et périphériques entrant en contact avec la phase de vapeur et de gaz lors du processus de fonctionnement de l'électrolyseur qui se présentent sous forme de sections centrales et périphériques disposées de manière à se déplacer les unes par rapport aux autres, et qui sont faites d'un matériau résistant à la corrosion et à l'érosion contenant 80,0-99,0 % en poids de fluorophlogopite et 20,0-1,0 % en poids d'une matière de charge réfractaire. Les sections centrales du revêtement peuvent être fixées rigidement sur chaque tige d'anode, et les sections périphériques peuvent se présenter sous forme de panneaux convexes fixés rigidement sur la surface supérieure de la cathode de manière amovible et reposant sur la section centrale du revêtement. En outre, la matière de charge réfractaire peut comprendre les composés chimiques suivants: de l'argile, du fluorure de calcium, du rutile, de l'aluminosilicate de sodium, de la fluoro-apophyllite, de la néphéline, de l'olivine, du fluorure de magnésium, de la spinelle. Sur les connexions d'extrémité et latérales des revêtements centraux et périphériques peut être appliquée une couche d'un agent d'étanchéification sous forme d'une couche d'alumine, et des ouvertures peuvent également être formées dans la section centrale du revêtement. L'utilisation de la présente invention assure l'étanchéité du revêtement, la fiabilité et la sécurité de la structure, et une diminution de la consommation énergétique.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
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Description | Date |
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Application Not Reinstated by Deadline | 2019-11-26 |
Inactive: Dead - Final fee not paid | 2019-11-26 |
Common Representative Appointed | 2019-10-30 |
Common Representative Appointed | 2019-10-30 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2019-10-28 |
Deemed Abandoned - Conditions for Grant Determined Not Compliant | 2018-11-26 |
Notice of Allowance is Issued | 2018-05-24 |
Letter Sent | 2018-05-24 |
Notice of Allowance is Issued | 2018-05-24 |
Inactive: Approved for allowance (AFA) | 2018-05-15 |
Inactive: Q2 passed | 2018-05-15 |
Change of Address or Method of Correspondence Request Received | 2018-01-16 |
Inactive: Cover page published | 2017-11-23 |
Letter Sent | 2017-07-14 |
Inactive: Notice - National entry - No RFE | 2017-07-13 |
Application Received - PCT | 2017-07-11 |
Inactive: IPC assigned | 2017-07-11 |
Inactive: IPC assigned | 2017-07-11 |
Inactive: First IPC assigned | 2017-07-11 |
National Entry Requirements Determined Compliant | 2017-06-28 |
Request for Examination Requirements Determined Compliant | 2017-06-28 |
All Requirements for Examination Determined Compliant | 2017-06-28 |
Application Published (Open to Public Inspection) | 2016-07-07 |
Abandonment Date | Reason | Reinstatement Date |
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2019-10-28 | ||
2018-11-26 |
The last payment was received on 2018-10-26
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
Please refer to the CIPO Patent Fees web page to see all current fee amounts.
Fee Type | Anniversary Year | Due Date | Paid Date |
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Request for examination - standard | 2017-06-28 | ||
Basic national fee - standard | 2017-06-28 | ||
MF (application, 2nd anniv.) - standard | 02 | 2017-10-30 | 2017-10-17 |
MF (application, 3rd anniv.) - standard | 03 | 2018-10-29 | 2018-10-26 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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OBSHCHESTVO S OGRANICHENNOY OTVETSTVENNOST'YU "OBEDINENNAYA KOMPANIYA RUSAL INZHENERNO-TEKHNOLOGICHESKIY TSENTR" |
Past Owners on Record |
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ALEXANDER OLEGOVICH GUSEV |
DMITRIY ALEKSANDROVICH SIMAKOV |
OLEG VALENTINOVICH SLUCHENKOV |