NO20053249L - Anodekondisjonering. - Google Patents

Anodekondisjonering.

Info

Publication number
NO20053249L
NO20053249L NO20053249A NO20053249A NO20053249L NO 20053249 L NO20053249 L NO 20053249L NO 20053249 A NO20053249 A NO 20053249A NO 20053249 A NO20053249 A NO 20053249A NO 20053249 L NO20053249 L NO 20053249L
Authority
NO
Norway
Prior art keywords
metallic
anode structure
metallic anode
immersion
active
Prior art date
Application number
NO20053249A
Other languages
English (en)
Inventor
Jean-Jacques Duruz
Vittorio De Nora
Original Assignee
Moltech Invent Sa
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 filed Critical Moltech Invent Sa
Publication of NO20053249L publication Critical patent/NO20053249L/no

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/08Cell construction, e.g. bottoms, walls, cathodes
    • C25C3/12Anodes

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

En metallisk anodestruktur for elektrolytisk utvinning av aluminium har initialt en ytre del av jernbasert legering med en aktiv anodeoverflate som hovedsakelig er metallisk og fri for keramiske forbindelser av metaller fra det metalliske. Anodestrukturen gjennomgår en kondisjoneringsbehandling som inkluderer: hovedsakelig å hindre at den hovedsakelig metallisk aktive overflate som er fri for den keramiske forbindelse reagerer med reaktive stoffer, særlig oksygen- og fluorstoffer, inntil nedsenking i en smeltet elektrolytt som inneholder oksygenioner; nedsenking av den metalliske anodestruktur med sin hovedsakelig metallisk aktive overflate som er fri for de keramiske forbindelser i den smeltede elektrolytt; og polarisering av den nedsenkede metalliske anodestruktur for på den metalliske anodestruktur å danne et tett og koherent integrert jernbasert oksidlag som er elektrokjemisk aktivt, for oksidasjon av oksygen, og som inhiberer diffusjon av oksygen mot den metalliske anodestruktur. Den metalliske anodestruktur kan dekkes med et midlertidig beskyttende medium, eksempelvis et beskyttende lag, som hindrer keramdannende reaksjoner ved den metalliske anodeoverflate, og som kan tas av før eller ved nedsenking i elektrolytten.
NO20053249A 2002-12-03 2005-07-01 Anodekondisjonering. NO20053249L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IB0205112 2002-12-03
PCT/IB2003/005713 WO2004050956A1 (en) 2002-12-03 2003-12-03 A method of conditioning iron alloy-based anodes for aluminium electrowinning cells

Publications (1)

Publication Number Publication Date
NO20053249L true NO20053249L (no) 2005-07-01

Family

ID=32448806

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20053249A NO20053249L (no) 2002-12-03 2005-07-01 Anodekondisjonering.

Country Status (8)

Country Link
US (1) US20060151334A1 (no)
EP (1) EP1567692B1 (no)
AU (1) AU2003283720A1 (no)
CA (1) CA2503131A1 (no)
DE (1) DE60317703D1 (no)
NO (1) NO20053249L (no)
NZ (1) NZ539705A (no)
WO (1) WO2004050956A1 (no)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861938A (en) * 1972-03-13 1975-01-21 Int Nickel Co Protective coating for metals
US5069929A (en) * 1984-09-19 1991-12-03 Sumitomo Metal Industries, Ltd. Actinic radiation-curable rust-preventive coating compositions for steel products
DE4400391A1 (de) * 1994-01-08 1995-07-13 Messer Griesheim Gmbh Verfahren zur Vermeidung von Randoxidation beim Aufkohlen von Stählen
US5904828A (en) * 1995-09-27 1999-05-18 Moltech Invent S.A. Stable anodes for aluminium production cells
US6248227B1 (en) * 1998-07-30 2001-06-19 Moltech Invent S.A. Slow consumable non-carbon metal-based anodes for aluminium production cells
AU4794699A (en) * 1998-07-30 2000-02-21 Moltech Invent S.A. Slow consumable non-carbon metal-based anodes for aluminium production cells
WO2001043208A2 (en) * 1999-12-09 2001-06-14 Duruz, Jean-Jacques Aluminium electrowinning cells operating with metal-based anodes
US20050000823A1 (en) * 2001-08-06 2005-01-06 Nguyen Thinh T. Aluminium production cells with iron-based metal alloy anodes

Also Published As

Publication number Publication date
DE60317703D1 (de) 2008-01-03
EP1567692A1 (en) 2005-08-31
WO2004050956A1 (en) 2004-06-17
CA2503131A1 (en) 2004-06-17
EP1567692B1 (en) 2007-11-21
US20060151334A1 (en) 2006-07-13
NZ539705A (en) 2007-04-27
AU2003283720A1 (en) 2004-06-23

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Legal Events

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