Production of alumina from aluminum-containing mineral ores with

Details Production of alumina from aluminum-containing mineral ores with Production of alumina from aluminum-containing mineral ores with

1982-09-27

1984-08-28

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423121, 423119, 423127, 423131, 423115, 423419P, C01F 720

Patent

active

044683758

ABSTRACT:
A process for the production of alumina from aluminum-containing mineral ores, such as bauxite, comprising comminuting the aluminum-containing mineral ore, then reacting the comminuted mineral ore at an elevated temperature with an aqueous solution having at least 150 grams per liter of sodium bicarbonate which forms a solid reaction product containing dawsonite and impurities, and finally converting the dawsonite to alumina.

REFERENCES:
patent: 1196734 (1916-08-01), Frazer et al.
patent: 2783127 (1957-02-01), Grote
patent: 3501264 (1970-03-01), Pilato et al.
patent: 3859413 (1975-01-01), Haas
patent: 3983212 (1976-09-01), Lowenstein et al.
patent: 4221771 (1980-09-01), van der Heem
patent: 4265864 (1981-05-01), Sugahara et al.
U.S. Department of Energy Report LETC/RI-80/8 entitled "Thermal Behavior of Dawsonite", by Francis J. Keenan et al.

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