Method and an electrowinning cell for production of metal

Details Method and an electrowinning cell for production of metal Method and an electrowinning cell for production of metal

2006-12-05

2006-12-05

King, Roy (Department: 1742)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C204S246000, C204S256000, C204S258000, C204S265000, C204S266000, C204S277000, C204S278000

Reexamination Certificate

active

07144483

ABSTRACT:
The present invention relates to a method for production of molten aluminium by electrolysis of an aluminous ore, preferably alumina, in a molten salt mixture, preferably a sodium fluoride—aluminium fluoride-based electrolyte. The invention describes an electrolysis cell for said production of aluminium by use of essentially inert electrodes in a vertical an/or inclined position, where said cell design facilitates separation of aluminium and evolved oxygen gas by providing a gas separation chamber (14) arranged in communication with the electrolysis chamber (22), thus establishing an electrolyte flow between the electrolysis chamber (22) and the gas separation chamber (14).

REFERENCES:
patent: 3909375 (1975-09-01), Holliday et al.
patent: 5006209 (1991-04-01), Beck et al.
patent: 5660710 (1997-08-01), Sivilotti
patent: 5725744 (1998-03-01), Nora et al.
patent: 134495 (1976-07-01), None

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