Cathode pot for an aluminum electrolytic cell

Details Cathode pot for an aluminum electrolytic cell Cathode pot for an aluminum electrolytic cell

1985-02-21

1986-10-28

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204294, C25C 308, C25B 1112

Patent

active

046197508

ABSTRACT:
A cathode pot for the electrolytic production of aluminum has composite bodies which line the sidewalls of the steel shell and are bonded to the carbon floor elements such that a seal is formed. The inner side of the said composite is of carbonaceous material and the outer side of a hard ceramic material. This conducts the electric current poorly but conducts heat well, is resistant to molten aluminum and the prevailing atmosphere of the process, and has a coefficient of thermal expansion comparable to that of carbon.
The intimate joining together of the two sides permits almost unhindered flow of heat from inside to outside.
The composite bodies are manufactured in layers, mechanically compacted and baked or graphitized in packing powder.

REFERENCES:
patent: 3256173 (1966-06-01), Schmitt et al.
patent: 3960696 (1976-01-01), Wittner
patent: 4118304 (1978-10-01), Arita
patent: 4175022 (1979-11-01), Vadla et al.
patent: 4436597 (1984-03-01), Hartley, II

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