Inconsumable electrodes

Details Inconsumable electrodes Inconsumable electrodes

1976-01-19

1977-11-08

Mack, John H.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C25B 1104

Patent

active

040574806

ABSTRACT:
Process for operating a cell 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, and anode for carrying out the process.
In the process a current density above a minimum value is maintained 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 material which is resistant to attack by the electrolyte. The anode may be fitted with a current distributor for attaining a better current distribution.

REFERENCES:
patent: 3661739 (1972-05-01), Tomilov et al.
patent: 3738918 (1973-06-01), Johnson
patent: 3770613 (1973-11-01), Chisholm
patent: 3793164 (1974-02-01), Kolb et al.
patent: 3856650 (1974-12-01), Kugler et al.

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