Protective barrier for alumina reduction cells

Details Protective barrier for alumina reduction cells Protective barrier for alumina reduction cells

1985-09-04

1986-05-27

Niebling, John F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204 67, 204279, C25C 308

Patent

active

045914192

ABSTRACT:
A protective barrier for alumina reduction cell cathodes is disclosed. This barrier layer comprises a layer of borosilicate glass which may optionally be surrounded by layers of alumina silicate glass. The barrier prevents cryolitic salts from attacking the reduction cell insulation, preventing degradation of the insulation and improving cell efficiency.

REFERENCES:
patent: 3773643 (1973-11-01), Russell et al.
patent: 3779699 (1973-12-01), Russell et al.
patent: 4119422 (1978-10-01), Rostoker
patent: 4160715 (1979-07-01), Kinosz et al.
patent: 4411758 (1983-10-01), Hess et al.

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