Ledge-free aluminum smelting cell

Details Ledge-free aluminum smelting cell Ledge-free aluminum smelting cell

1996-09-09

1997-09-16

Gorgos, Kathryn L.

Electrolysis: processes, compositions used therein, and methods

Electrolytic synthesis

Utilizing fused bath

C25C 306

Patent

active

056676646

ABSTRACT:
An aluminium smelting cell comprising side walls (5) and a floor (2) defining an active cathode, an anode (3) overlying the cathode floor (2), some said side walls (5) being covered by a wetted cathode material (6), such as one contained TiB.sub.2, so that the covered side walls become active cathode surfaces on which a film of aluminium metal forms to protect the side wall parts against bath attack, thereby enabling the cell to operate at the desired temperatures without the usual protective side ledge of the frozen electrolyte material.

REFERENCES:
patent: 3856650 (1974-12-01), Kugler et al.
patent: 4526911 (1985-07-01), Boxall et al.
patent: 4592820 (1986-06-01), McGeer
patent: 4650552 (1987-03-01), de Nora
patent: 4687564 (1987-08-01), Blander et al.
patent: 5043047 (1991-08-01), Sledman
Grjotheim et al; Aluminum Electrolysis Fundamentals of the Hall--Heeroult Process, 2nd Edition, p. 407, 1982 No Month Available.

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