Method for obtaining alumina from clays

Details Method for obtaining alumina from clays Method for obtaining alumina from clays

1980-07-17

1982-08-03

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423115, 423119, 423131, 423111, C01F 726

Patent

active

043427294

ABSTRACT:
Disclosed is a method for obtaining alumina from silicates by calcining a dry mixture of the silicate and an alkali metal or ammonium salt, such as the sulphate, bisulphate, sulphite, etc. and dissolving the reaction product in water or an aqueous alkali. Hydrated alumina is precipitated from the resulting solution and calcined to alumina.

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patent: 957848 (1910-10-01), Emanuel
patent: 1160431 (1915-11-01), Mellen
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patent: 1681921 (1928-08-01), Bjorkstedt
patent: 1752599 (1930-04-01), Kigellgren
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patent: 2250186 (1941-05-01), Noll
patent: 2375977 (1945-05-01), Davies et al.
patent: 2388983 (1945-11-01), Lyons
patent: 3839536 (1974-10-01), Sato et al.

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