Chlorination of ores with catalyzed metal chlorides

Details Chlorination of ores with catalyzed metal chlorides Chlorination of ores with catalyzed metal chlorides

1978-08-14

1980-09-02

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ivb metal

423135, 423149, 423 1, 423 60, 423 96, 423 97, 423 88, 423107, 423155, C01F 760, C01G 2302, C01G 4910

Patent

active

042206294

ABSTRACT:
The invention comprises a process for the manufacture of metal chlorides by the double-decomposition reaction between a metal chlorinating agent and a metal oxide having greater affinity for chlorine than does the oxide of the metal chloride, and in the presence of small amounts of boron chloride or functionally equivalent boron compounds that increase the rate and degree of completion of the reaction.
A major application of this invention is for the making by the chlorination of clay of aluminum chloride and alumina intermediates for the manufacture of aluminum metal.
SiCl.sub.4 is formed in the carbo-chlorination of clay or other aluminous-siliceous ores. The SiCl.sub.4 by this invention is catalyzed with BCl.sub.3 and reacted with calcined clay to produce AlCl.sub.3 and SiO.sub.2. The practical use of SiCl.sub.4 to make AlCl.sub.3 thus eliminates the previous costly burden of waste SiCl.sub.4 production.

REFERENCES:
patent: 2758019 (1956-08-01), Daubenspeck et al.
patent: 3244509 (1966-04-01), Nowak et al.
patent: 3466169 (1969-09-01), Nowak et al.
patent: 4083927 (1978-04-01), Wyndham
patent: 4086320 (1978-04-01), Martin et al.
patent: 4096234 (1978-06-01), Martin et al.

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