Use of polymers in alumina precipitation in the Bayer process of

Details Use of polymers in alumina precipitation in the Bayer process of Use of polymers in alumina precipitation in the Bayer process of

1985-11-13

1986-08-26

Carter, H. T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

423121, 423130, C01F 704

Patent

active

046082379

ABSTRACT:
The negative effects of sodium oxylate on the crystallization of aluminum trihydrate from Bayer process liquors may be eliminated or curtailed by adding an effective amount of a polyacrylic acid with a molecular weight about 1,000,000 and containing at least 50 mole percent acrylic acid monomer to pregnant Bayer process liquors.

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patent: 3575868 (1971-04-01), Galvin et al.
patent: 3716617 (1970-04-01), Oku et al.
patent: 3755531 (1973-08-01), Tsukawaki et al.
patent: 3899571 (1975-08-01), Yamada et al.
patent: 4038039 (1977-07-01), Carruthers et al.
patent: 4046855 (1977-09-01), Schepers et al.
patent: 4478795 (1984-10-01), Hereda et al.

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