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CA2451574A1 - Fonctionnement de cellules a extraction electrolytique d'aluminium pourvues d'anodes a base de metal - Google Patents

Fonctionnement de cellules a extraction electrolytique d'aluminium pourvues d'anodes a base de metal Download PDF

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Publication number
CA2451574A1
CA2451574A1 CA002451574A CA2451574A CA2451574A1 CA 2451574 A1 CA2451574 A1 CA 2451574A1 CA 002451574 A CA002451574 A CA 002451574A CA 2451574 A CA2451574 A CA 2451574A CA 2451574 A1 CA2451574 A1 CA 2451574A1
Authority
CA
Canada
Prior art keywords
nickel
electrolyte
fluoride
aluminium
iron
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.)
Abandoned
Application number
CA002451574A
Other languages
English (en)
Inventor
Thinh T. Nguyen
Vittorio De Nora
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.)
Moltech Invent SA
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2451574A1 publication Critical patent/CA2451574A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/12—Anodes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/18—Electrolytes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

L'invention concerne un procédé permettant d'inhiber la fluoration et la passivation d'une anode à base de métal pourvue d'une partie extérieure en alliage constituée de fer et de nickel et/ou de cobalt et recouverte par une couche de surface en oxyde solidaire, disposée face à une cathode, dans un électrolyte fondu contenant du fluorure d'aluminium. Le procédé selon l'invention consiste à maintenir dans l'électrolyte une quantité d'au moins un fluorure basique, tel que du fluorure de calcium ou de lithium, de sorte à réduire l'activité acide du fluorure d'aluminium, ce qui inhibe la fluoration, la corrosion du fer et la passivation du nickel et/ou du cobalt sur la partie extérieure en alliage.
CA002451574A 2001-05-30 2002-05-28 Fonctionnement de cellules a extraction electrolytique d'aluminium pourvues d'anodes a base de metal Abandoned CA2451574A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IBPCT/IB01/00954 2001-05-30
IB0100954 2001-05-30
PCT/IB2002/001952 WO2002097167A2 (fr) 2001-05-30 2002-05-28 Fonctionnement de cellules a extraction electrolytique d'aluminium pourvues d'anodes a base de metal

Publications (1)

Publication Number Publication Date
CA2451574A1 true CA2451574A1 (fr) 2002-12-05

Family

ID=11004113

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002451574A Abandoned CA2451574A1 (fr) 2001-05-30 2002-05-28 Fonctionnement de cellules a extraction electrolytique d'aluminium pourvues d'anodes a base de metal

Country Status (5)

Country Link
EP (1) EP1392893A2 (fr)
CA (1) CA2451574A1 (fr)
NO (1) NO20035305L (fr)
NZ (1) NZ529850A (fr)
WO (1) WO2002097167A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2375057T3 (es) 2003-08-14 2012-02-24 Rio Tinto Alcan International Limited Célula de extracción electrolítica de metales con prificador de electrolito.
RU2276701C1 (ru) * 2004-10-26 2006-05-20 Общество с ограниченной ответственностью "Инженерно-технологический центр" Электролит для получения алюминия (варианты)
CN115073190B (zh) * 2022-06-23 2023-04-21 登封市宏源耐火材料有限公司 一种阳极炉出铜溜槽用铝镁锆质浇注料及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455211A (en) * 1983-04-11 1984-06-19 Aluminum Company Of America Composition suitable for inert electrode
US6030518A (en) * 1997-06-26 2000-02-29 Aluminum Company Of America Reduced temperature aluminum production in an electrolytic cell having an inert anode
US6258247B1 (en) * 1998-02-11 2001-07-10 Northwest Aluminum Technology Bath for electrolytic reduction of alumina and method therefor
ES2306516T3 (es) * 1998-07-30 2008-11-01 Moltech Invent S.A. Anodos basados en una aleacion de niquel y hierro para celulas para electrolisis de aluminio.
ES2223587T3 (es) * 1999-10-26 2005-03-01 Moltech Invent S.A. Celda para electrolisis de aluminio, con funcionamiento a baja emperatura.
AU1404100A (en) * 1999-12-09 2001-06-18 Moltech Invent S.A. Aluminium electrowinning cells operating with metal-based anodes

Also Published As

Publication number Publication date
WO2002097167A3 (fr) 2003-03-13
NZ529850A (en) 2005-11-25
WO2002097167A2 (fr) 2002-12-05
EP1392893A2 (fr) 2004-03-03
NO20035305D0 (no) 2003-11-28
NO20035305L (no) 2003-11-28

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Legal Events

Date Code Title Description
FZDE Discontinued