Novel collectors for the selective froth flotation of mineral sulfides
AssigneeThe Dow Chemical Company
InventorsRichard R. Klimpel, Robert D. Hansen, Edwin J. Strojny
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Abstract
This invention relates to a froth flotation process for selectively recovering nonferrous metal-containing sulfide minerals or sulfidized metal-containing oxide minerals from ores using froth flotation. The collector employed in the process is an epithio compound of the formula: ##STR1## wherein m=1, 2 or 3; each R is independently hydrogen, a hydrocarbyl group or substituted hydrocarbyl group; each R.sup.1 is independently hydrogen, a hydrocarbyl group or substituted hydrocarbyl group, provided one R or R.sup.1 is not hydrogen; and each R.sup.2 is independently hydrogen, hydrocarbyl, hydrocarbyloxy or hydrocarbyl thioether.
Claims13
A method of recovering metal-containing sulfide minerals or sulfidized metal-containing oxide minerals from an ore which comprises subjecting the ore, in the form of an aqueous pulp, to a froth flotation process in the presence of a flotating amount of an organic compound of the general structural formula:
- ##STR10## wherein each R and each R.sup.1 is independently hydrogen, an aliphatic, cycloaliphatic, aromatic or combination thereof, unsubstituted or substituted with one or more hydroxy, ether, cyanogen, halogen or thioether moieties, provided at least one R or R.sup.1 is not hydrogen and the epithio collector has at least 6 and less than 20 carbon atoms, under conditions such that the metal-containing sulfide mineral or sulfidized metal-containing oxide mineral is recovered in the froth.
Dependencies are inferred from the claim text.