Two stage chlorination process for aluminum value containing sou

Details Two stage chlorination process for aluminum value containing sou Two stage chlorination process for aluminum value containing sou

1981-04-20

1982-10-19

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ivb metal

423 74, 423135, 423136, 423343, 423149, C01G 3500, C01G 3308, C01F 756, C01G 4910

Patent

active

043550070

ABSTRACT:
A two stage process is described for chlorinating aluminum value containing materials such as bauxite, clay, fly ash, etc. The process comprises the steps of:
(A) dehydrating the material, if necessary, at a temperature of between about 500.degree. and about 1300.degree. K.;
(B) chlorinating the product of step (A) in the presence of chlorine and carbon at a temperature below about 1200.degree. K. and under conditions which provide chlorination of a majority of the iron present in the clay without substantial chlorination of titania values which may be present therein with concommittant formation of an iron chloride cloud above the surface of the chlorination reaction mixture;
(C) introducing oxygen into the iron chloride cloud under conditions to cause oxidation of a majority of the iron chloride contained in the cloud; and
(D) chlorinating the non-gaseous product of step (B) in the presence of chlorine and carbon at a temperature above about 1300.degree. K. but below the fusion temperature of silica containing components and under conditions sufficient to chlorinate substantially entirely the alumina, titania and silica values contained therein.

REFERENCES:
patent: 1528039 (1925-03-01), Wolcott
patent: 1600216 (1926-09-01), Dearborn
patent: 1605098 (1926-11-01), Dearborn
patent: 1875105 (1932-08-01), Muggleton et al.
patent: 1982194 (1934-11-01), Brode et al.
patent: 3627483 (1971-12-01), Cole et al.
patent: 3865920 (1975-02-01), Dunn

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