Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iiia metal or beryllium
Patent
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.
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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.
Aluminum Company of America
Carter Herbert T.
Klepac Glenn E.
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