WO2007105124A3 - Aluminium electrowinning cell with reduced heat loss - Google Patents

Aluminium electrowinning cell with reduced heat loss Download PDF

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Publication number
WO2007105124A3
WO2007105124A3 PCT/IB2007/050610 IB2007050610W WO2007105124A3 WO 2007105124 A3 WO2007105124 A3 WO 2007105124A3 IB 2007050610 W IB2007050610 W IB 2007050610W WO 2007105124 A3 WO2007105124 A3 WO 2007105124A3
Authority
WO
WIPO (PCT)
Prior art keywords
aluminium
electrolyte
drained
cell
sidewall section
Prior art date
Application number
PCT/IB2007/050610
Other languages
French (fr)
Other versions
WO2007105124A2 (en
Inventor
Nora Vittorio De
Kaenel Rene Von
Thinh T Nguyen
Original Assignee
Moltech Invent Sa
Nora Vittorio De
Kaenel Rene Von
Thinh T Nguyen
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, Kaenel Rene Von, Thinh T Nguyen filed Critical Moltech Invent Sa
Publication of WO2007105124A2 publication Critical patent/WO2007105124A2/en
Publication of WO2007105124A3 publication Critical patent/WO2007105124A3/en

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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

Abstract

A drained-cathode cell (10) for the electrowinning of aluminium (25) from alumina dissolved in a fluoride- containing molten electrolyte (30) has: a cell bottom (11) and cell sidewalls (12', 15, 16) forming a cavity for containing the electrolyte (30) up to an operative electrolyte level (31); and aluminium-wettable drained cathode surfaces (13) on which during use aluminium is produced and from which aluminium is drained. The sidewalls have one or more sections (12') extending from the cell bottom to about the electrolyte level or thereabove. The sidewall sections are thermally insulated so as to inhibit formation of a ledge of frozen electrolyte thereon and inhibit heat losses therethrough. An upper part (13') of at least one sidewall section has an aluminium-wettable drained cathode surface on which during use aluminium is produced and drained along and over the entire sidewall section exposed to molten electrolyte from about the operative electrolyte level down to the cell bottom. The product aluminium draining along and over the sidewall section inhibits exposure to molten electrolyte of this sidewall section between the electrolyte level and the cell bottom.
PCT/IB2007/050610 2006-03-10 2007-02-26 Aluminium electrowinning cell with reduced heat loss WO2007105124A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IB2006000608 2006-03-10
IBPCT/IB2006/000608 2006-03-10

Publications (2)

Publication Number Publication Date
WO2007105124A2 WO2007105124A2 (en) 2007-09-20
WO2007105124A3 true WO2007105124A3 (en) 2008-04-17

Family

ID=38376318

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/050610 WO2007105124A2 (en) 2006-03-10 2007-02-26 Aluminium electrowinning cell with reduced heat loss

Country Status (1)

Country Link
WO (1) WO2007105124A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2971270B1 (en) * 2013-03-13 2022-11-16 Elysis Limited Partnership Systems and methods of protecting electrolysis cells
EP2971257B1 (en) 2013-03-13 2022-08-24 Elysis Limited Partnership Systems and methods of protecting electrolysis cell sidewalls
AU2015315380B2 (en) * 2014-09-10 2020-04-16 Alcoa Usa Corp. Systems and methods of protecting electrolysis cell sidewalls
US9957627B2 (en) 2014-09-10 2018-05-01 Alcoa Usa Corp. Systems and methods of protecting electrolysis cell sidewalls

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5667664A (en) * 1990-08-20 1997-09-16 Comalco Aluminum Limited Ledge-free aluminum smelting cell
WO1999002764A1 (en) * 1997-07-08 1999-01-21 Moltech Invent S.A. A drained cathode cell for the production of aluminium
US20050269202A1 (en) * 2002-03-30 2005-12-08 Vittorio De Nora Prevention of dissolution of metal-based aluminium production anodes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5667664A (en) * 1990-08-20 1997-09-16 Comalco Aluminum Limited Ledge-free aluminum smelting cell
WO1999002764A1 (en) * 1997-07-08 1999-01-21 Moltech Invent S.A. A drained cathode cell for the production of aluminium
US20050269202A1 (en) * 2002-03-30 2005-12-08 Vittorio De Nora Prevention of dissolution of metal-based aluminium production anodes

Also Published As

Publication number Publication date
WO2007105124A2 (en) 2007-09-20

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