Process for the extraction of alumina from aluminum-containing s

Details Process for the extraction of alumina from aluminum-containing s Process for the extraction of alumina from aluminum-containing s

1977-03-30

1978-08-29

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423126, 423128, 423132, 423139, C01F 722, C01F 726

Patent

active

041103998

ABSTRACT:
A process for the extraction of alumina from aluminum-containing silicates is disclosed. The process comprises acid leaching of the raw material, iron extraction, precipitation of the aluminum fraction as the aluminum chloride hexahydrate, removal of sodium chloride and calcination to alumina. The process can be made continuous with substantial regeneration and recycling of process components.

REFERENCES:
patent: 3082062 (1963-03-01), Preuss
patent: 3211521 (1965-10-01), George et al.
patent: 3240561 (1966-03-01), Brown
patent: 3240562 (1966-03-01), Brown et al.
patent: 3320032 (1967-05-01), Feller
patent: 3323865 (1967-06-01), Michener et al.
patent: 3331662 (1967-07-01), Feller
patent: 3586481 (1971-06-01), Hyde et al.
patent: 3620671 (1971-11-01), Maurel et al.
patent: 3816590 (1974-06-01), Huska et al.
patent: 3862293 (1975-01-01), Maurel et al.

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