Process and apparatus for controlled feed of alumina and halogen

Details Process and apparatus for controlled feed of alumina and halogen Process and apparatus for controlled feed of alumina and halogen

1982-04-09

1984-03-06

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

204245, 204246, C25C 306, C25C 314, C25C 320

Patent

active

044352557

ABSTRACT:
The invention concerns a process and a device for controlled feed of alumina and halogen additives into a vat for production of aluminum by alumina electrolysis according to the Hall-Heroult technique.
The alumina or the halogen additive, set aside by gravity into the storage means, is introduced into a volumetric feed regulator and dispatched under the effect of a jet of compressed air, as far as the orifice of introduction into the electrolysis vat, through a rigid system of pipes, in successive equal or unequal dosed quantities, at constant or variable time intervals. The device includes no moving piece which is subject to wear or abrasion.

REFERENCES:
patent: 3135672 (1964-06-01), Hirakawa et al.
patent: 4321115 (1982-03-01), Rebmann et al.
patent: 4332660 (1982-06-01), Friedli et al.

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