C - Chemistry – Metallurgy – 25 – C
Patent
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.
366156
Derivaz Jean-Pierre
Duruz Jean-Jacques R.
Sane Ajit Y.
Wheeler Douglas J.
Diamond - Shamrock Corporation
Gowling Lafleur Henderson Llp
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