FIELD: chemistry.
SUBSTANCE: invention can be applied in chemical industry. Method for obtaining aluminium oxide in Bayer process includes addition of one or more than one cross-linked polysaccharides in quantity from 0.1 to 100 parts per million to said process solution at the stage of aluminium oxide trihydrate precipitation.
EFFECT: invention makes it possible to increase efficiency of flocculation of small crystals of aluminium oxide trihydrate, reduce loss of solid substances with reverse solution.
12 cl, 9 tbl, 9 ex
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