Process for thermally insulating precalcined anodes in electroly

Details Process for thermally insulating precalcined anodes in electroly Process for thermally insulating precalcined anodes in electroly

1983-05-02

1984-12-25

Williams, Howard S.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204 67, 204245, C25C 312

Patent

active

044902336

ABSTRACT:
The invention relates to a process for thermally insulating precalcined anodes in cells for the production of aluminum by the electrolysis of alumina dissolved in an electrolysis bath based on molten cryolite, comprising covering the upper part of the anodes with a heat-insulating layer of alumina and/or ground electrolysis bath, in which process a strip of aluminum substantially equal in height to the heat-insulating layer is applied to the upper part of the anode and over its entire periphery.
To facilitate positioning of the strip, a ledge to which the strip is applied is formed around the periphery of the anode.

REFERENCES:
patent: 3453199 (1969-07-01), Fricker
patent: 3829374 (1974-08-01), Kugler et al.
patent: 4172023 (1979-10-01), Friedli et al.

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