Aluminum production
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United States of America Patent
Stats
-
Feb 12, 1980
Grant Date -
N/A
app pub date -
Oct 23, 1978
filing date -
Oct 23, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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