Electrolytic cell for the production of aluminum

Details Electrolytic cell for the production of aluminum Electrolytic cell for the production of aluminum

1979-07-30

1982-07-06

Williams, Howard S.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204245, 204290R, 204294, C25C 306, C25C 312, C25C 324, C25C 702

Patent

active

043381774

ABSTRACT:
A cell for the electrolytic deposition of aluminum at low temperatures and low electrical potential in which the anode is the sole source of aluminum and comprises a composite mixture of an aluminous material such as aluminum oxide and a reducing agent. Conductor means of higher electrical conductivity than the mixture are provided to conduct substantially the entire anodic current to the active anode surface thereby reducing the voltage drop through the highly resistive composite mixture. The mixture may be employed in a self-baking mode or be prebaked. Alternatively, the mixture may be in a particulate form and contained within a porous membrane which passes the electrolyte or other dissolved material while withholding undissolved impurities. The cell may have bipolar electrodes and may be used in combined winning and refining configurations.

REFERENCES:
patent: 503929 (1993-08-01), Hall
patent: 2552423 (1951-05-01), Glazunov
patent: 3400061 (1968-09-01), Lewis et al.
patent: 3502553 (1970-03-01), Gruber
patent: 3798140 (1974-03-01), Sullivan et al.
patent: 4093524 (1978-06-01), Payne
patent: 4115215 (1978-09-01), Dac et al.
patent: 4118292 (1978-10-01), Fray
patent: 4231853 (1980-11-01), Rahn
Minet, "The Production of Aluminum" (1905) p. 245.
Edwards et al., The Aluminum Industry (1930) vol. 1, p. 12.
Good et al., Electrodeposition of Aluminum From Fused-Salt Electrolytes Containing Aluminum Chloride (U.S. Dept. of Interior Report) pp. 1-3.

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