Low molecular weight hydrolyzed polymers or copolymers as depres

Details Low molecular weight hydrolyzed polymers or copolymers as depres Low molecular weight hydrolyzed polymers or copolymers as depres

1979-11-19

1981-09-15

Halper, Robert

Classifying, separating, and assorting solids

Fluid suspension

Liquid

B03D 106

Patent

active

042896134

ABSTRACT:
Low molecular weight hydrolyzed polymers or copolymers of the general structure: ##STR1## exhibit excellent depressive action in the flotation of non-sulfide mineral ores thereby resulting in improved selectivity and recovery. The low molecular weight, partially hydrolyzed polymers or copolymers perform depressing action without resulting in any associated flocculation in the flotation system. The partially hydrolyzed polymers or copolymers can be combined with other known depressing agents for non-sulfide ores, such as starch, dextrin, gum and the like, to obtain equivalent or improved selectivity and recovery than would be obtained using these depressants alone.

REFERENCES:
patent: 2740522 (1956-04-01), Aimone
patent: 3310710 (1967-03-01), Abernethy
patent: 3371978 (1968-03-01), Iwasaki
patent: 3545941 (1969-03-01), Wilson
patent: 3572504 (1971-03-01), De Cuyper
patent: 3805951 (1974-04-01), Brogoitti
patent: 3929629 (1975-12-01), Griffith
patent: 3975496 (1976-08-01), Smalley
patent: 4081357 (1978-03-01), Werneke
patent: 4090955 (1978-03-01), Dexter

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