Alumina from high silica bauxite

Details Alumina from high silica bauxite Alumina from high silica bauxite

1986-09-10

1987-04-28

Carter, H. T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423127, C01F 706

Patent

active

046613285

ABSTRACT:
A process is disclosed for purifying gibbsitic alumina-rich ore of high silica content including admixing the ore with an aqueous digestion solution high in silica concentration. In one aspect the digestion is performed with high alumina and soda concentration at low temperature, e.g., such as by atmospheric digestion.

REFERENCES:
patent: 2375342 (1945-05-01), Brown
patent: 2375343 (1945-05-01), Brown
patent: 3401009 (1968-09-01), Gittos
patent: 3413087 (1968-11-01), Roberts
patent: 3668442 (1972-02-01), Fish
patent: 3681013 (1972-08-01), Fish
patent: 3716617 (1973-02-01), Oku et al.
patent: 4468375 (1984-08-01), Misra
Chemical Engineering, Oct. 2, 1961, pp. 42-44.
Glastonbury, "Advances Extr. Met. Proc. Symp.", London 1967, Kinetics of Gibbsite Extraction, pp. 908-917.

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