Graphitized cathode blocks

Details Graphitized cathode blocks Graphitized cathode blocks

C - Chemistry, Metallurgy

25

C

C25C 3/08 (2006.01)

Patent

CA 2470753

Disclosed are graphitized cathode blocks for producing aluminum by electrolytically reducing aluminum oxide in a molten cryolite bath. The electrical resistance of the inventive cathode blocks has a V-shaped profile across the length of the cathode blocks, increases towards the ends, and has a place of discontinuity in the middle thereof. Also disclosed are a method for the production of said cathode blocks and the use thereof for producing aluminum.

L'invention concerne des blocs cathodiques graphités permettant de produire de l'aluminium par réduction électrolytique d'oxyde d'aluminium dans un bain de cryolithe fondue. L'invention est caractérisée en ce que ces blocs cathodiques comportent sur leur longueur une résistance électrique profilée en forme de V, grossissant vers les extrémités et comportant au centre des blocs cathodiques une zone de discontinuité. L'invention se rapporte en outre à un procédé de production desdits blocs cathodiques et à leur utilisation dans le cadre de la production d'aluminium.

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