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

B - Operations, Transporting

03

D

361/6

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

Patent

CA 1064168

ABSTRACT OF DISCLOSURE 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 a condensation product of an aldehyde with a compound containing at least two amine or amide groups.

246801

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