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1. WO2000040782 - ALUMINIUM ELECTROWINNING CELLS WITH OXYGEN-EVOLVING ANODES

Publication Number WO/2000/040782
Publication Date 13.07.2000
International Application No. PCT/IB2000/000027
International Filing Date 10.01.2000
Chapter 2 Demand Filed 25.05.2000
IPC
C25C 3/12 2006.01
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
3Electrolytic production, recovery or refining of metals by electrolysis of melts
06of aluminium
08Cell construction, e.g. bottoms, walls, cathodes
12Anodes
C25C 7/02 2006.01
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
7Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
02Electrodes; Connections thereof
CPC
C25C 3/12
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
3Electrolytic production, recovery or refining of metals by electrolysis of melts
06of aluminium
08Cell construction, e.g. bottoms, walls, cathodes
12Anodes
C25C 7/025
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
7Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
02Electrodes
025used in cells for the electrolysis of melts
Applicants
  • MOLTECH INVENT S.A. [LU/LU]; 68-70, boulevard de la Pétrusse L-2320 Luxembourg, LU (AllExceptUS)
  • DE NORA, Vittorio [IT/BS]; BS (UsOnly)
Inventors
  • DE NORA, Vittorio; BS
Agents
  • CRONIN, Brian; Route de Troinex 9 CH-1227 Carouge, CH
Priority Data
PCT/IB99/0001808.01.1999IB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ALUMINIUM ELECTROWINNING CELLS WITH OXYGEN-EVOLVING ANODES
(FR) CELLULES D'EXTRACTION ELECTROLYTIQUE DE L'ALUMINIUM POURVUES D'ANODES A EMISSION D'OXYGENE
Abstract
(EN)
A cell for the electrowinning of aluminium comprises at least one non-carbon metal-based anode (10) having an electrically conductive metallic structure (12, 13, 15) which is suspended substantially parallel to a facing cathode (20, 21, 22). Such metallic structure (12, 13, 15) comprises a series of parallel horizontal anode members (15), each having an electrochemically active surface (16) on which during electrolysis oxygen is anodically evolved. The electrochemically active surfaces (16) are in a generally coplanar arrangement to form the active anode surface. The anode members are spaced apart from one another by inter-member gaps forming flow-through openings (17) for the circulation of electrolyte (30) driven by the escape of anodically-evolved oxygen. The electrolyte (30) may circulate upwardly and/or downwardly in the flow-through openings (17) and possibly around the anode structure (12, 13, 15).
(FR)
L'invention concerne une cellule d'extraction électrolytique de l'aluminium comprenant au moins une anode (10) à base d'un métal autre que le carbone dotée d'une structure métallique (12, 13, 15) conductrice d'électricité suspendue en position sensiblement parallèle à une cathode opposée (20, 21, 22). Cette structure métallique (12, 13, 15) comprend une série d'éléments d'anode (15) horizontaux parallèles, présentant chacun une surface électrochimiquement active (16) sur laquelle de l'oxygène est émis par l'anode pendant l'électrolyse. Les surfaces électrochimiquement actives (16) sont généralement disposées de façon coplanaire afin de former la surface active des anodes. Les éléments d'anode sont séparés les uns des autres par des espaces intercalaires formant des ouvertures de propagation (17) laissant circuler l'électrolyte (30) entraîné par l'échappement d'oxygène émis par l'anode. L'électrolyte (30) peut circuler vers le haut et/ou vers le bas dans les ouvertures de propagation (17) et éventuellement autour de la structure de l'anode (12, 13, 15).
Also published as
NO20013378
SK200100958
SK9582001
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