Removal of humates from bayer process liquors

Details Removal of humates from bayer process liquors Removal of humates from bayer process liquors

1987-12-22

1990-02-20

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210735, 423130, C01F 702

Patent

active

049024256

ABSTRACT:
A basic liquid ion exchange process in which a side stream of Bayer liquor is treated with a cationic compound preferably in the form of a polymer (poly-DADMAC) to extract a significant amount of the organic contaminants (humates) from the liquor. The contaminant loaded organic layer is separated from the treated liquor (which is returned to the system) and stripped by an alkali metal precipitation technique and the polymer is regenerated.

REFERENCES:
patent: 4578255 (1986-03-01), Roe et al.

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