Production of bauxite and aluminium chloride of low iron...

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

C - Chemistry, Metallurgy

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B

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C22B 21/06 (2006.01) C01F 7/56 (2006.01) C01F 7/60 (2006.01) C01G 49/10 (2006.01)

Patent

CA 1044469

ABSTRACT OF THE DISCLOSURE 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 chlori- nation in a second step whereby ferric chloride is produced and removed by volatilization. Aluminium chloride of low iron con- tent may be obtained from the purified aluminous material by chlorination.

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