Bipolar electrode for Hall-Heroult electrolysis

Details Bipolar electrode for Hall-Heroult electrolysis Bipolar electrode for Hall-Heroult electrolysis

1984-05-17

1985-07-16

Andrews, R. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204243R, 204268, 204291, 204292, 204293, 427250, C25B 1104, C25B 1102

Patent

active

045294941

ABSTRACT:
A monolithic bipolar electrode for the production of primary aluminum by molten salt electrolysis is composed of a cermet anodic layer 10, a conductive and diffusion-resistant intermediate layer 14, and a refractory hard metal cathodic layer 20, with the edges covered by an electrolyte-resistant coating. The intermediate conductive layer 14 has a coefficient of thermal expansion intermediate to the anodic and cathodic layers.

REFERENCES:
patent: 4017375 (1977-04-01), Pohto
patent: 4138324 (1979-02-01), Meyer
patent: 4339323 (1982-07-01), Dilmore et al.
patent: 4402809 (1983-09-01), Dilmore et al.
patent: 4422917 (1983-12-01), Hayfield

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