Controlled carbo-chlorination of kaolinitic ores

Details Controlled carbo-chlorination of kaolinitic ores Controlled carbo-chlorination of kaolinitic ores

1976-11-02

1978-04-11

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423135, 423137, 423495, 423341, 75113, C01F 756, C01F 758

Patent

active

040839273

ABSTRACT:
A novel improvement in the process for the carbochlorination of kaolinitic ores is provided wherein the improvement comprises adding catalytic amounts of boron chloride to the carbo-chlorination step which results in the catalyzed and controlled chlorination of alumina and silica. Preferably, about 0.3 to 5.0 percent of boron chloride per volume of chlorine is added to the chlorination step and in combination with from 5 to 40 percent or more of reductant carbon to provide a conjoint action wherein preferential chlorination of alumina over silica is obtained at low levels of boron chloride and reductant and total chlorination of both alumina and silica are obtained at high boron chloride and reductant levels.

REFERENCES:
patent: 1866731 (1932-07-01), Staib
patent: 2832668 (1958-04-01), Cullierson et al.
patent: 3956454 (1976-05-01), Nemecz et al.
Seferovich, "Chemical Abstracts," vol. 29, 1935, 1213(9).
Krech, "Journal of General Chemistry, USSR," vol. 7, 1937, pp. 1249-1263.

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