JPS57123990A - Melting method for cryolite in prebaking system aluminum electrolytic furnace - Google Patents
Melting method for cryolite in prebaking system aluminum electrolytic furnaceInfo
- Publication number
- JPS57123990A JPS57123990A JP20315881A JP20315881A JPS57123990A JP S57123990 A JPS57123990 A JP S57123990A JP 20315881 A JP20315881 A JP 20315881A JP 20315881 A JP20315881 A JP 20315881A JP S57123990 A JPS57123990 A JP S57123990A
- Authority
- JP
- Japan
- Prior art keywords
- cryolite
- pieces
- prebaking
- melting method
- aluminum electrolytic
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Landscapes
- Electrolytic Production Of Metals (AREA)
Abstract
PURPOSE: To melt cryolite packed between electrodes safely by supplying an electric current with a prescribed current density to carbonaceous pieces put between the underside of the anode block and the cathode lining when a line of Al electrolytic plants is started.
CONSTITUTION: When an electrolytic cell in an Al electrolytic plant is newly started, carbonaceous pieces 3 are arranged between the underside of the anode blocks 1 and a cathode lining 2, and they are fixed by the dead weight of the block 1. By supplying an electric current with 25W400A/cm2 current density, the pieces 3 are heated until they are made red-hot, and cryolite is packed and melted. After continuing the current supply for a prescribed time, the pieces 3 are removed and the cryolite melting work is finished in safety.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20315881A JPS57123990A (en) | 1981-12-15 | 1981-12-15 | Melting method for cryolite in prebaking system aluminum electrolytic furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20315881A JPS57123990A (en) | 1981-12-15 | 1981-12-15 | Melting method for cryolite in prebaking system aluminum electrolytic furnace |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57123990A true JPS57123990A (en) | 1982-08-02 |
JPS5760432B2 JPS5760432B2 (en) | 1982-12-20 |
Family
ID=16469390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20315881A Granted JPS57123990A (en) | 1981-12-15 | 1981-12-15 | Melting method for cryolite in prebaking system aluminum electrolytic furnace |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57123990A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6164892A (en) * | 1984-07-20 | 1986-04-03 | ウエドテツク・コ−ポレ−シヨン | Treatment of rock |
FR2844811A1 (en) * | 2002-09-20 | 2004-03-26 | Pechiney Aluminium | Preheating of a vat for the production of aluminium by electrolysis, uses a layer of squashed granulated conducting material to form contacts on the lower surfaces of the anodes |
CN101838823A (en) * | 2010-04-10 | 2010-09-22 | 甘肃华鹭铝业有限公司 | Method for baking mixed coke particles and electrolyte for specially-shaped aluminum electrolytic tank |
WO2012174641A1 (en) * | 2011-05-25 | 2012-12-27 | Rio Tinto Alcan International Limited | Dry cell start-up of an electrolytic cell for aluminum production |
-
1981
- 1981-12-15 JP JP20315881A patent/JPS57123990A/en active Granted
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6164892A (en) * | 1984-07-20 | 1986-04-03 | ウエドテツク・コ−ポレ−シヨン | Treatment of rock |
FR2844811A1 (en) * | 2002-09-20 | 2004-03-26 | Pechiney Aluminium | Preheating of a vat for the production of aluminium by electrolysis, uses a layer of squashed granulated conducting material to form contacts on the lower surfaces of the anodes |
WO2004027119A3 (en) * | 2002-09-20 | 2004-04-22 | Pechiney Aluminium | Method for pre-heating a stack for aluminium electrolysis production |
US7485215B2 (en) | 2002-09-20 | 2009-02-03 | Aluminium Pechiney | Method of pre-heating a stack for aluminium electrolysis production |
NO341453B1 (en) * | 2002-09-20 | 2017-11-13 | Pechiney Aluminium | Process for preheating a vessel for aluminum electrolysis production |
CN101838823A (en) * | 2010-04-10 | 2010-09-22 | 甘肃华鹭铝业有限公司 | Method for baking mixed coke particles and electrolyte for specially-shaped aluminum electrolytic tank |
WO2012174641A1 (en) * | 2011-05-25 | 2012-12-27 | Rio Tinto Alcan International Limited | Dry cell start-up of an electrolytic cell for aluminum production |
CN103547710A (en) * | 2011-05-25 | 2014-01-29 | 力拓艾尔坎国际有限公司 | Dry cell start-up of an electrolytic cell for aluminum production |
EP2739769A4 (en) * | 2011-05-25 | 2015-07-08 | Rio Tinto Alcan Int Ltd | Dry cell start-up of an electrolytic cell for aluminum production |
RU2607308C2 (en) * | 2011-05-25 | 2017-01-10 | Рио Тинто Алкан Интернэшнл Лимитед | Dry cell start-up of electrolytic cell for aluminium production |
US9631289B2 (en) | 2011-05-25 | 2017-04-25 | Rio Tinto International Limited | Dry cell start-up of an electrolytic cell for aluminum production |
Also Published As
Publication number | Publication date |
---|---|
JPS5760432B2 (en) | 1982-12-20 |
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