Production of bauxite and aluminium chloride of low iron content

Details Production of bauxite and aluminium chloride of low iron content Production of bauxite and aluminium chloride of low iron content

1975-04-10

1977-11-22

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423135, 423148, 423149, C01F 756, C01G 4910

Patent

active

040596737

ABSTRACT:
Removal of iron from aluminous material such as bauxite is effected by treatment with a gas mixture comprising sulphur dioxide and carbon monoxide in a first step, followed by chlorination in a second step whereby ferric chloride is produced and removed by volatilization. Aluminium chloride of low iron content may be obtained from the purified aluminous material by chlorination.

REFERENCES:
patent: RE19531 (1935-04-01), Benner et al.
patent: 1760962 (1930-06-01), Phillips et al.
patent: 1771481 (1930-07-01), Benner et al.
patent: 1785464 (1930-12-01), Suzuki
patent: 2238103 (1951-04-01), Fink et al.
patent: 3560153 (1971-02-01), Hiester
patent: 3690828 (1972-09-01), Baitz et al.
patent: 3856508 (1974-12-01), Othmer
patent: 3888970 (1975-06-01), Haas et al.
patent: 3959439 (1976-05-01), Pope

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