Process for treating bauxite or similar raw material

Details Process for treating bauxite or similar raw material Process for treating bauxite or similar raw material

1979-02-12

1981-05-05

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423119, 423120, 423131, 423137, C01F 708

Patent

active

042658640

ABSTRACT:
When an alkali such as an alkali metal bicarbonate or carbonate is intimately mixed with bauxite or other alumina-containing raw material at an Al.sub.2 O.sub.3 /Na.sub.2 O molar ratio of from 1/1 to 1/3 and the mixture is molded into granules, then calcined and extracted with an aqueous medium, the alumina component can be recovered in a high yield in the form of an aqueous solution of an alkali metal aluminate. The alkali component is not substantially contained in the residue left after recovery of this aqueous solution.

REFERENCES:
patent: 1591365 (1923-07-01), Cowles
patent: 1891608 (1932-12-01), Scheidt
patent: 1926744 (1933-09-01), James
patent: 1971354 (1934-08-01), Scheidt et al.
patent: 2141132 (1938-12-01), Folger
patent: 2420852 (1947-05-01), Archibald
patent: 3057683 (1962-10-01), Lecis et al.
patent: 3856512 (1974-12-01), Palmer et al.
patent: 4045537 (1977-08-01), Hrishikesan
patent: 4087510 (1978-05-01), Steenken
Edwards et al, "Aluminum and Its Production,", vol. 1, McGraw-Hill Co., N.Y. 1930, pp. 131-134.

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