Process for settling red mud in the digestion of bauxite

Details Process for settling red mud in the digestion of bauxite Process for settling red mud in the digestion of bauxite

1974-10-07

1976-08-17

Carter, Herbert T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

260 793M, 423121, 423131, 209 5, 526 89, 526240, 526304, 526317, C01F 706, C01F 714

Patent

active

039754960

ABSTRACT:
The invention provides novel water-soluble copolymers useful as flocculating agents, especially in flocculating the red mud formed during the Bayer process for the production of alumina from bauxite. The copolymers comprise anionic monomer units e.g. acrylic acid units in a mole percentage of less than 50% and acrylamide type units some of which are methylolated.

REFERENCES:
patent: 3575868 (1971-04-01), Galvin et al.
patent: 3716617 (1973-02-01), Oku et al.
patent: 3755531 (1973-08-01), Tsukawaki et al.
Central Patents Index, Basic Abstracts Journal, Derwent Pub. Ltd., London, Nov. 19, 1971, Abstract 61030S (U.S.S.R. Pat. No. 285,912).

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