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1. Advanced Patent Search Publication numberUS3975496 A
Publication typeGrant Application numberUS 05/512,579
Publication dateAug 17, 1976 Filing dateOct 7, 1974 Priority
dateOct 10, 1973 Also published asDE2448220A1, DE2448220B2,
DE2448220C3 Publication number05512579, 512579, US 3975496 A, US
3975496A, US-A-3975496, US3975496 A, US3975496A InventorsEric
Rothwell, Graham Smalley Original AssigneeAllied Colloids
Limited Export CitationBiBTeX, EndNote, RefMan External
Links: USPTO, USPTO Assignment, Espacenet Process for settling
red mud in the digestion of bauxite US 3975496 A The invention
provides novel water-soluble copolymers useful as flocculating
agents, especially in flocculating the red mud formed during the
Bayer process for the production of alumina from bauxite. The
copolymers comprise anionic monomer units e.g. acrylic acid
units in a mole percentage of less than 50% and acrylamide type
units some of which are methylolated. Previo