RU2001124341A - GRAPHITE CATHODE FOR ELECTROLYSIS OF ALUMINUM - Google Patents

GRAPHITE CATHODE FOR ELECTROLYSIS OF ALUMINUM

Info

Publication number
RU2001124341A
RU2001124341A RU2001124341/02A RU2001124341A RU2001124341A RU 2001124341 A RU2001124341 A RU 2001124341A RU 2001124341/02 A RU2001124341/02 A RU 2001124341/02A RU 2001124341 A RU2001124341 A RU 2001124341A RU 2001124341 A RU2001124341 A RU 2001124341A
Authority
RU
Russia
Prior art keywords
end regions
cathode
central region
graphite cathode
cathodes
Prior art date
Application number
RU2001124341/02A
Other languages
Russian (ru)
Other versions
RU2245395C2 (en
Inventor
Жан-Мишель ДРЕЙФЮС
Original Assignee
Карбон Савуа
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR9901320A external-priority patent/FR2789091B1/en
Application filed by Карбон Савуа filed Critical Карбон Савуа
Publication of RU2001124341A publication Critical patent/RU2001124341A/en
Application granted granted Critical
Publication of RU2245395C2 publication Critical patent/RU2245395C2/en

Links

Claims (6)

1. Графитовый катод для электролиза алюминия, отличающийся тем, что выполнен в виде единого блока, при этом его удельное электрическое сопротивление не одинаково вдоль его продольной оси и в концевых областях катода (3) больше, чем в центральной области последнего.1. A graphite cathode for aluminum electrolysis, characterized in that it is made in the form of a single unit, while its electrical resistivity is not the same along its longitudinal axis and in the end regions of the cathode (3) more than in the central region of the latter. 2. Графитовый катод по п.1, отличающийся тем, что различие в удельном сопротивлении в концевых областях и в центральной области катода (3) получено путем разной термообработки в этих разных областях во время операции графитизации, при которой концевые области поддерживались при температуре, которая ниже, чем в центральной области.2. The graphite cathode according to claim 1, characterized in that the difference in resistivity in the end regions and in the central region of the cathode (3) is obtained by different heat treatments in these different regions during the graphitization operation, at which the end regions were maintained at a temperature that lower than in the central region. 3. Графитовый катод по п.2, отличающийся тем, что во время операции графитизации концевые области катода доводили до температуры порядка 2200-2500°С, тогда как центральная область доводилась до температуры порядка 2700-3000°С.3. The graphite cathode according to claim 2, characterized in that during the graphitization operation, the end regions of the cathode were brought to a temperature of about 2200-2500 ° C, while the central region was brought to a temperature of about 2700-3000 ° C. 4. Графитовый катод по любому из пп.2 и 3, отличающийся тем, что различие в термообработке в концевых областях и в центральной области катода (3) получено путем ограничения термоизоляции (8) графитизационной печи (11) и/или путем расположения теплоотводов, обращенных к концевым областям катодов, для увеличения тепловых потерь.4. A graphite cathode according to any one of claims 2 and 3, characterized in that the difference in heat treatment in the end regions and in the central region of the cathode (3) is obtained by limiting the thermal insulation (8) of the graphitization furnace (11) and / or by arranging the heat sinks, facing the end regions of the cathodes to increase heat loss. 5. Графитовый катод по любому из пп.2 и 3, отличающийся тем, что различие в термообработке в концевых областях и в центральной области катода (3) получено путем локального изменения линий тока и возникающего в результате этого эффекта Джоуля во время операции графитизации.5. A graphite cathode according to any one of claims 2 and 3, characterized in that the difference in heat treatment in the end regions and in the central region of the cathode (3) is obtained by locally changing streamlines and the resulting Joule effect during the graphitization operation. 6. Графитовый катод по п.5, отличающийся тем, что в случае, когда операцию графитизации проводили одновременно для нескольких катодов (3), расположенных параллельно друг другу внутри печи (6), например - печи Ачесона, в которой катоды отделены друг от друга набивкой в виде резистивных зерен, например - гранул угля или кокса, различие в термообработке между концевыми областями и центральной частью катода (3) было получено путем изменения удельного электрического сопротивления резистивных зерен между двумя катодами и/или путем расположения теплоотводов, обращенных к концевым областям.6. A graphite cathode according to claim 5, characterized in that in the case when the graphitization operation was carried out simultaneously for several cathodes (3) located parallel to each other inside the furnace (6), for example, Acheson furnace, in which the cathodes are separated from each other by packing in the form of resistive grains, for example, granules of coal or coke, the difference in heat treatment between the end regions and the central part of the cathode (3) was obtained by changing the electrical resistivity of the resistive grains between the two cathodes and / or by arranging heat branches facing the end areas.
RU2001124341/02A 1999-02-02 2000-02-01 Graphitic cathode for electrolysis of aluminum RU2245395C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR99/01320 1999-02-02
FR9901320A FR2789091B1 (en) 1999-02-02 1999-02-02 GRAPHITE CATHODE FOR ALUMINUM ELECTROLYSIS

Publications (2)

Publication Number Publication Date
RU2001124341A true RU2001124341A (en) 2003-06-27
RU2245395C2 RU2245395C2 (en) 2005-01-27

Family

ID=9541620

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2001124341/02A RU2245395C2 (en) 1999-02-02 2000-02-01 Graphitic cathode for electrolysis of aluminum

Country Status (18)

Country Link
US (1) US6627062B1 (en)
EP (1) EP1151150B1 (en)
JP (1) JP2002538293A (en)
CN (1) CN1272471C (en)
AT (1) ATE267277T1 (en)
AU (1) AU776902B2 (en)
BR (1) BR0007917A (en)
CA (1) CA2361610C (en)
DE (1) DE60010861T2 (en)
ES (1) ES2218108T3 (en)
FR (1) FR2789091B1 (en)
IS (1) IS2480B (en)
MX (1) MXPA01007830A (en)
NO (1) NO20013775L (en)
PL (1) PL195085B1 (en)
RU (1) RU2245395C2 (en)
WO (1) WO2000046426A1 (en)
ZA (1) ZA200106312B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10164009B4 (en) * 2001-12-28 2005-04-07 Sgl Carbon Ag Process for the preparation of cathode blocks
DE10164008C1 (en) * 2001-12-28 2003-04-30 Sgl Carbon Ag Graphitized cathode block, used for producing aluminum by electrolytically reducing aluminum oxide in a bath of molten cryolite, is composed of two parts and has a V-shaped profile of its electrical resistance over its length
DE10164013C1 (en) * 2001-12-28 2003-04-03 Sgl Carbon Ag Longitudinal graphitization of cathode blocks for electrolytic production of aluminum comprises arranging blocks with gap between their ends, conductive moldings being placed between blocks
DE10164012C1 (en) * 2001-12-28 2003-04-30 Sgl Carbon Ag Process for continuously graphitizing cathode blocks comprises using a tunnel-like oven with a conveying device, and passing the material through a lock at the inlet and outlet of the oven
DE10164011C1 (en) * 2001-12-28 2003-05-08 Sgl Carbon Ag Process, for graphitizing cathode blocks, involves arranging the blocks in a longitudinal graphitizing furnace, maintaining the a lowest possible distance between the surfaces of the blocks, and passing a current between the blocks
DE10164014C1 (en) * 2001-12-28 2003-05-22 Sgl Carbon Ag Process for graphitizing cathode blocks comprises arranging cathode blocks in a longitudinal graphitizing oven so that the conducting joint between the individual blocks are produced by a conducting contact body
DE10164010C1 (en) * 2001-12-28 2003-04-30 Sgl Carbon Ag Production of cathode blocks, used for the electrolytic recovery of aluminum, comprises graphitizing carbonized cathode blocks in the longitudinal direction by inductively heating the cathode blocks in the center
DE10261745B3 (en) * 2002-12-30 2004-07-22 Sgl Carbon Ag Cathode system for electrolytic aluminum extraction
FR2861090B1 (en) * 2003-10-17 2005-12-23 Sgl Carbone Ag CATHODE FOR ALUMINUM ELECTROLYSIS, METHOD FOR MANUFACTURING SAME AND USE THEREOF
RU2443623C1 (en) * 2010-10-14 2012-02-27 Закрытое акционерное общество "Институт новых углеродных материалов и технологий" (ЗАО "ИНУМиТ") Method of producing higher abrasive resistance of graphitised material
CN102234820B (en) * 2011-08-04 2013-03-20 中国铝业股份有限公司 Method for reducing horizontal current in molten aluminum of aluminum electrolysis bath
EP2650404B1 (en) * 2012-04-12 2018-01-10 SGL CFL CE GmbH Electrolysis cell, in particular for the production of aluminium
CN110184627B (en) * 2019-05-10 2020-11-06 中国铝业股份有限公司 Directional magnetic conductive cathode steel bar for aluminum electrolysis

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1029122A (en) 1910-02-10 1912-06-11 Electrode Company Of America Graphitizing electrodes.
CA968744A (en) 1970-12-12 1975-06-03 Kurt Lauer Cathode for the winning of aluminum
DE2105247C3 (en) 1971-02-04 1980-06-12 Schweizerische Aluminium Ag, Zuerich (Schweiz) Furnace for the fused aluminum electrolysis
CH620948A5 (en) * 1976-05-13 1980-12-31 Alusuisse
DE3327230A1 (en) 1983-07-28 1985-02-07 Sigri Elektrographit Gmbh, 8901 Meitingen LINING FOR ELECTROLYSIS PAN FOR PRODUCING ALUMINUM

Similar Documents

Publication Publication Date Title
RU2001124341A (en) GRAPHITE CATHODE FOR ELECTROLYSIS OF ALUMINUM
US5505929A (en) Method for manufacturing high purity graphite material and manufacturing apparatus for use thereof
HK1080423A1 (en) Process of making graphite articles
US3116975A (en) Artificial graphite process
CN104386682A (en) Graphitization furnace and method for heat treatment of graphite powder by virtue of graphitization furnace
RU2245395C2 (en) Graphitic cathode for electrolysis of aluminum
KR102234015B1 (en) Method of manufacturing graphite sheet with excellent heat conductive property and graphit sheet manufactured
CA2239670C (en) Graphitizing electric furnace
NO20013776D0 (en) Impregnated graphite electrode for aluminum electrolysis
CN103265015B (en) A kind of pulse eddy current high-temperature flash method of purification of graphite
US3345448A (en) High temperature electrical connection
NO124752B (en)
US9340429B1 (en) Preparation method for graphitizing carbon material
CN204897411U (en) A graphitizing furnace structure for purification of lithium cell anode material graphitization
CN100416203C (en) Calcined coke graphitization method and calcined coke graphitization furnace
CN204324887U (en) A kind of graphitizing furnace
JPH07206415A (en) Carbon cluster producing raw material
JPH0657876B2 (en) Method for manufacturing graphite electrode for electric furnace
KR20240100046A (en) Artificial Graphite Manufacturing Furnace
CN207894246U (en) High temperature graphitization stove
JP2004026634A (en) System for graphitizing carbon body
CA2470686C (en) Process for continuous graphitization
US3081254A (en) Electrolytic cell structure
Winters Extreme temperatures
JP2002266091A (en) Graphit cathode block for smelting aluminum