Recovery of alumina from bauxite

Details Recovery of alumina from bauxite Recovery of alumina from bauxite

1989-10-13

1991-04-16

Hruskoci, Peter

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iiia metal or beryllium

209 5, 210727, 210730, 210733, 210734, C01F 706

Patent

active

050080890

ABSTRACT:
Red mud in Bayer process liquors are flocculated using dextran and synthetic anionic polymer in the same stage, usually added separately to the liquor. The liquor may be the primary settler slurry, the secondary clarification liquor or one or more of the red mud washing stages. The process is of particular advantage where the liquors are high in carbonate content and/or total alkalinity.

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"Synthetic Flocculant Technology in the Bayer Process" by L. J. Connelly et al., Nalco Chemical Company, pp. 61-68.

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