WO2003006716A3 - Alloy-based anode structures for aluminium production - Google Patents

Alloy-based anode structures for aluminium production Download PDF

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Publication number
WO2003006716A3
WO2003006716A3 PCT/IB2002/002732 IB0202732W WO03006716A3 WO 2003006716 A3 WO2003006716 A3 WO 2003006716A3 IB 0202732 W IB0202732 W IB 0202732W WO 03006716 A3 WO03006716 A3 WO 03006716A3
Authority
WO
WIPO (PCT)
Prior art keywords
metal
electrochemically active
active
alloy
anode
Prior art date
Application number
PCT/IB2002/002732
Other languages
French (fr)
Other versions
WO2003006716A2 (en
Inventor
Nora Vittorio De
Original Assignee
Moltech Invent Sa
Nora Vittorio De
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 Moltech Invent Sa, Nora Vittorio De filed Critical Moltech Invent Sa
Priority to EP02755397A priority Critical patent/EP1448810B1/en
Priority to CA002450071A priority patent/CA2450071A1/en
Priority to AU2002321684A priority patent/AU2002321684A1/en
Priority to US10/479,312 priority patent/US20040231979A1/en
Priority to DE60224436T priority patent/DE60224436D1/en
Publication of WO2003006716A2 publication Critical patent/WO2003006716A2/en
Priority to NO20040143A priority patent/NO20040143L/en
Publication of WO2003006716A3 publication Critical patent/WO2003006716A3/en

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
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/12—Anodes

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)
  • Powder Metallurgy (AREA)
  • Prevention Of Electric Corrosion (AREA)

Abstract

A long-lasting metal-based oxygen-evolving anode (10) for the electrowinning of aluminium from alumina dissolved in a molten electrolyte, has a plurality of electrochemically active anode members (15,15') spaced apart and parallel to one another. Each anode member (15) can comprise a bottom part (15a) which has a substantially constant width over its height and which is extended upwardly by a tapered top part (15b for guiding a circulation of electrolyte (30) thereon. The bottom part (15a) is usually made of a metal alloy with a substantially flat oxide bottom surface (16) which is electrochemically active for the oxidation of oxygen. The metal alloy can comprise an electrically conductive inert structural metal and an active diffusable metal that during electrolysis slowly diffuses to the electrochemically active bottom surface (16) where it is oxidised for maintaining the electrochemically active bottom surface (16) and slowly dissolves into the molten electrolyte (30), in which case the bottom part (15a) forms a long-lasting supply of the active metal diffusable to the electrochemically active bottom surface (16).
PCT/IB2002/002732 2001-07-13 2002-07-09 Alloy-based anode structures for aluminium production WO2003006716A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP02755397A EP1448810B1 (en) 2001-07-13 2002-07-09 Alloy-based anode structures for aluminium production
CA002450071A CA2450071A1 (en) 2001-07-13 2002-07-09 Alloy-based anode structures for aluminium production
AU2002321684A AU2002321684A1 (en) 2001-07-13 2002-07-09 Alloy-based anode structures for aluminium production
US10/479,312 US20040231979A1 (en) 2001-07-13 2002-07-09 Alloy-based anode structures for aluminium production
DE60224436T DE60224436D1 (en) 2001-07-13 2002-07-09 ANODE STRUCTURES BASED ON ALLOYS FOR THE PREPARATION OF ALUMINUM
NO20040143A NO20040143L (en) 2001-07-13 2004-01-13 Alloy-based anode structures for aluminum production

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IB0101275 2001-07-13
IBPCT/IB01/01275 2001-07-13

Publications (2)

Publication Number Publication Date
WO2003006716A2 WO2003006716A2 (en) 2003-01-23
WO2003006716A3 true WO2003006716A3 (en) 2004-06-03

Family

ID=11004133

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2002/002732 WO2003006716A2 (en) 2001-07-13 2002-07-09 Alloy-based anode structures for aluminium production

Country Status (8)

Country Link
US (1) US20040231979A1 (en)
EP (1) EP1448810B1 (en)
AT (1) ATE382722T1 (en)
AU (1) AU2002321684A1 (en)
CA (1) CA2450071A1 (en)
DE (1) DE60224436D1 (en)
NO (1) NO20040143L (en)
WO (1) WO2003006716A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2533450C (en) 2003-08-14 2012-07-17 Moltech Invent S.A. Metal electrowinning cell with electrolyte purifier
AU2005250240B2 (en) * 2004-06-03 2011-06-30 Rio Tinto Alcan International Limited High stability flow-through non-carbon anodes for aluminium electrowinning
WO2010127401A1 (en) * 2009-05-07 2010-11-11 Aluminium Smelter Developments Pty Ltd Wedge contact system
CN101580949B (en) * 2009-06-24 2010-08-25 中国铝业股份有限公司 Method for improving stability of aluminum electrolytic bath
CN102140652B (en) * 2011-03-07 2012-09-19 陈虎政 Novel anode used for aluminum electrolysis and production method thereof
US9222183B2 (en) * 2012-08-01 2015-12-29 Alcoa Inc. Inert electrodes with low voltage drop and methods of making the same
RU2698162C2 (en) 2017-03-01 2019-08-22 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Perforated metal inert anode for aluminium production by molten electrolysis
CN108977851B (en) * 2018-08-01 2020-05-05 新疆众和股份有限公司 Anode steel claw for electrolytic aluminum

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3008116A1 (en) * 1980-03-03 1981-09-17 Conradty GmbH & Co Metallelektroden KG, 8505 Röthenbach GAS-DEVELOPING METAL ELECTRODE FOR ELECTROCHEMICAL PROCESSES
EP0135687A1 (en) * 1983-07-13 1985-04-03 BASF Aktiengesellschaft Gas evolving metal electrode
WO2000040782A1 (en) * 1999-01-08 2000-07-13 Moltech Invent S.A. Aluminium electrowinning cells with oxygen-evolving anodes
WO2001042534A2 (en) * 1999-12-09 2001-06-14 Moltech Invent S.A. Metal-based anodes for aluminium electrowinning cells

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3008116A1 (en) * 1980-03-03 1981-09-17 Conradty GmbH & Co Metallelektroden KG, 8505 Röthenbach GAS-DEVELOPING METAL ELECTRODE FOR ELECTROCHEMICAL PROCESSES
EP0135687A1 (en) * 1983-07-13 1985-04-03 BASF Aktiengesellschaft Gas evolving metal electrode
WO2000040782A1 (en) * 1999-01-08 2000-07-13 Moltech Invent S.A. Aluminium electrowinning cells with oxygen-evolving anodes
WO2001042534A2 (en) * 1999-12-09 2001-06-14 Moltech Invent S.A. Metal-based anodes for aluminium electrowinning cells

Also Published As

Publication number Publication date
DE60224436D1 (en) 2008-02-14
US20040231979A1 (en) 2004-11-25
EP1448810B1 (en) 2008-01-02
ATE382722T1 (en) 2008-01-15
NO20040143L (en) 2004-01-13
AU2002321684A1 (en) 2003-01-29
WO2003006716A2 (en) 2003-01-23
EP1448810A2 (en) 2004-08-25
CA2450071A1 (en) 2003-01-23

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