Liquor oxalate stabilizers

Details Liquor oxalate stabilizers Liquor oxalate stabilizers

1994-03-17

1995-01-31

Straub, Gary P.

Chemistry: physical processes

Physical processes

Crystallization

23300, 423121, 423130, 423131, C01F 734

Patent

active

053855868

ABSTRACT:
A method for inhibiting the precipitation of sodium oxalate crystals in a Bayer process liquor. The method comprises the step of adding to the Bayer process liquor, after red mud separation and immediately prior to crystallization of alumina trihydrate, or during crystallization of alumina trihydrate, or during classification of alumina trihydrate, an effective amount of a cationic, surface active, alkylammonium salt compound.

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Lever et al, Some Aspects of the Chemistry of Bauxite Organic Matter on the Bayer Process: The Sodium-Oxalate-Humate Interaction, Trauaux vol. 13 (1983) #18.

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