Ceramic oxide electrodes for molten salt electrolysis

Details Ceramic oxide electrodes for molten salt electrolysis Ceramic oxide electrodes for molten salt electrolysis

C - Chemistry, Metallurgy

25

C

204/197, 204/44

C25C 3/12 (2006.01)

Patent

CA 1159015

ABSTRACT A substantially non-consumable anode used in the production of aluminium from a cryolite-based fused bath containing alumina consists of a sintered self-sustaining ceramic oxide body of spinel structure which is made conductive by selective partial substitution, the introduction of non- stoichiometry or by doping so as to maintain the impurities in the produced aluminium at low levels. Preferred materials are partially-substituted nickel ferrite spinels.

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