Electrolysis of a molten charge using inconsumable electrodes

Details Electrolysis of a molten charge using inconsumable electrodes Electrolysis of a molten charge using inconsumable electrodes

C - Chemistry, Metallurgy

25

C

204/185, 204/46

C25C 3/06 (2006.01) C25C 3/12 (2006.01) C25C 7/02 (2006.01) C25C 7/06 (2006.01)

Patent

CA 1089403

ABSTRACT Process for operating a coil for the electrolysis of a molten charge, in particular aluminum oxide, with one or more anodes the working surfaces of which are of ceramic oxide material, anode for carrying out the process. In the process a current density above a minimum value is main- tained over the whole anode surface which comes into contact with the molten electrolyte. An anode for carrying out the process is provided at least in the region of the interface between electrolyte and surrounding atmosphere, the three phase zone, with a protective ring of electrically insulating mate- rial which is resistant to attack by the electrolyte. The anode may be fitted with a current distributor for attaining a better current distribution.

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