Aluminum production

Details Aluminum production Aluminum production

1978-10-23

1980-02-12

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C22B 2100

Patent

active

041882075

ABSTRACT:
A process for separating and refining substantially pure aluminum from aluminum-bearing materials including bauxites, clays and metallic scrap, wherein a mixture of such aluminum-bearing materials, calcium chloride and a reducing agent is heated above 1600.degree. C., and gases are vented to a cooling zone where condensed chlorides and aluminum are collected. Condensed aluminum trichloride is recycled and mixed with lime to produce calcium chloride in another starting batch. The reducing agent preferably is a carbon or silicon compound.

REFERENCES:
patent: 2184705 (1939-12-01), Willmore
patent: 2206562 (1940-07-01), Gentil

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