Materials and processes for flotation of mineral substances

Details Materials and processes for flotation of mineral substances Materials and processes for flotation of mineral substances

1975-11-04

1979-02-13

Rutledge, L. Dewayne

Classifying, separating, and assorting solids

Fluid suspension

Liquid

75 2, B03D 106

Patent

active

041394550

ABSTRACT:
This invention provides a method of concentrating a metaliferous ore containing also substantial quantities of pyrites and/or pyrrhotite and/or sphalerite and comprises subjecting an aqueous pulp of the ore to a froth flotation process in the presence of a depressant and in which (1) pyrites and/or pyrrhotite, and/or (2) sphalerite, is depressed by using as the depressant an amine in which at least 20% of the total number of amine groups are tertiary amine groups and in which the number of quaternary amine groups present is zero or is less than one-third the number of tertiary amine groups.

REFERENCES:
patent: 3784649 (1974-01-01), Buckman et al.
patent: 3834533 (1974-09-01), McGuire et al.
patent: 4054516 (1977-10-01), Izumi et al.

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