Continuous procedure of obtention of compounds of aluminum from

Details Continuous procedure of obtention of compounds of aluminum from Continuous procedure of obtention of compounds of aluminum from

1986-04-04

1987-06-02

Carter, H. T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423114, 423115, 423117, C01F 714

Patent

active

046702318

ABSTRACT:
The invention is drawn to a continuous process for the recovery of alumina from ores by mixing with an alkali bisulfate, calcining below 450.degree. C. to form the corresponding double salt, washing with water, and separating the insoluble residue from the solubilized aluminum, precipitating impure aluminum, resolubilizing aluminum with sodium hydroxide to form soluble sodium aluminate and separating it from the insoluble impurities, treating the resulting solution to form aluminum precipitate, separating the aluminum and calcining it to form alumina.

REFERENCES:
patent: 1681921 (1928-08-01), Bjorkstedt
patent: 1752599 (1930-04-01), Kjellgren
patent: 2055283 (1936-09-01), Fiske et al.
patent: 2160148 (1939-05-01), Hunyady
patent: 2388983 (1945-11-01), Lyons
patent: 4342729 (1982-08-01), Clavel et al.

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