Process and apparatus for production of aluminum

Details Process and apparatus for production of aluminum Process and apparatus for production of aluminum

1981-05-19

1983-07-12

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

204246, C25C 306, C25C 308, C25C 314

Patent

active

043929265

ABSTRACT:
In the production of aluminum by electrolytically reducing alumina dissolved in a fused fluoride salt mainly composed of cryolite, the present invention aims to reduce the cell voltage and/or to increase the inter-electrode distance of an aluminum electrolytic cell with a self baking type electrode, thereby reducing the specific electric power consumption. The present invention also automatically eliminates the anode effect. This is achieved by introducing a gas to the lower surface of the carbon anode in contact with the electrolytic bath, via at least one aperture passing in an essentially vertical direction through the carbon anode.

REFERENCES:
patent: 2713024 (1955-07-01), Mantovanello
patent: 3135672 (1964-06-01), Hirakawa et al.
patent: 3551308 (1970-12-01), Capitaine et al.
patent: 4035251 (1977-07-01), Shiver et al.

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