Low molecular weight copolymers and terpolymers as...

Details Low molecular weight copolymers and terpolymers as... Low molecular weight copolymers and terpolymers as...

B - Operations, Transporting

03

D

361/22

B03D 1/02 (2006.01) B03D 1/016 (2006.01)

Patent

CA 1182226

TITLE: LOW MOLECULAR WEIGHT COPOLYMERS AND TERPOLYMERS AS DEPRESSANTS IN MINERAL ORE FLOTATION ABSTRACT OF THE DISCLOSURE Low molecular weight copolymers and terpolymers of the general structure: Image wherein R1 is hydrogen or a methyl radical, R2 is hydrogen or COOM and M is a hydrogen, alkali metal cation or ammonium ion, exhibit excellent depressive action in the flotation of non-sulfide mineral ores thereby resulting in improved selectivity and recovery. The low molecular weight copoly- mers and terpolymers, perform depressing action without resulting in any associated flocculation in the flotation system. These copolymers and terpolymers can be combined with other known depressing agents in nonsulfide ore flotation processes such as starch, dextrin, water soluble gum and the like, to obtain equivalent or improved selec- tivity and recovery than would be obtained using these depressants alone.

407368

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