JPS57123990A - Melting method for cryolite in prebaking system aluminum electrolytic furnace - Google Patents

Melting method for cryolite in prebaking system aluminum electrolytic furnace

Info

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
Application number
JP20315881A
Other languages
Japanese (ja)
Other versions
JPS5760432B2 (en
Inventor
Yoshio Ishihara
Kazuhiko Hirasawa
Hiroyoshi Sumitomo
Kiyoshi Shibata
Mikio Mizuguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Aluminum Smelting Co
Original Assignee
Sumitomo Aluminum Smelting Co
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
Application filed by Sumitomo Aluminum Smelting Co filed Critical Sumitomo Aluminum Smelting Co
Priority to JP20315881A priority Critical patent/JPS57123990A/en
Publication of JPS57123990A publication Critical patent/JPS57123990A/en
Publication of JPS5760432B2 publication Critical patent/JPS5760432B2/ja
Granted legal-status Critical Current

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
JP20315881A 1981-12-15 1981-12-15 Melting method for cryolite in prebaking system aluminum electrolytic furnace Granted JPS57123990A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (11)

* Cited by examiner, † Cited by third party
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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