Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iiia metal or beryllium
Patent
1977-03-23
1978-04-25
Carter, Herbert T.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iiia metal or beryllium
423136, 423495, 423341, 75113, C01F 756, C01F 758
Patent
active
040863204
ABSTRACT:
The production of aluminum chloride from a source material containing both aluminum compounds and silicon compounds such as for example clay is improved by selective use of source materials having a surface area of at least 15 meter.sup.2 /gram; comminution of the source material after dehydration to a particle size of not greater than 0.6 mm (millimeters); and chlorinating the comminuted source material in the presence of a gaseous reducing agent at a temperature of at least 600.degree. C but less than 700.degree. C. This not only improves the rate of chlorination and improves the percentage of aluminum oxide converted to aluminum chloride but also improves the ratio of aluminum chloride to silicon chloride produced, thus producing less silicon chloride byproduct which otherwise must be recirculated to the chlorination reactor or otherwise disposed of.
REFERENCES:
patent: 1713968 (1929-05-01), Lea et al.
patent: 1865008 (1932-06-01), Holm
patent: 1875105 (1932-08-01), Muggleton et al.
patent: 1878013 (1932-09-01), Staib
Hille et al., "Angew. Chem.," vol. 72, 1960, pp. 850-855.
Martin Edward S.
Wohleber David A.
Aluminum Company of America
Carter Herbert T.
Taylor John P.
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