Collector compositions for the froth flotation of mineral values
AssigneeThe Dow Chemical Company
InventorsRichard R. Klimpel, Robert D. Hansen
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Abstract
A collector composition for use in froth flotation processes comprises two collectors. One of the collectors is preferably an omega-(hydrocarbylthio)alkylamine, S-(omega-aminoalkyl) hydrocarbyl thioate, N-(hydrocarbyl)-alpha, omega-alkanediamine, (omega-aminoalkyl) hydrocarbon amide, omega-(hydrocarbyloxy)alkylamine, omega-aminoalkyl hydrocarbonoate or mixture thereof. The second collector is a thiocarbonate, a thionocarbamate, a thiophosphate, thiocarbinilide, thiophosphinate, mercaptan, xanthogen formate, xanthic ester or mixture thereof. The collector composition floats a broad range of metal-containing minerals.
Claims23
A composition comprising
- (a) a compound corresponding to the formula:
- R.sup.1 --X--(R).sub.n N(R.sup.2).sub.a (H).sub.b
- where --(R).sub.n is ##STR24## R' is hydrogen, methyl or ethyl, y+p+m=n, n is an integer from 1 to 6 and each moiety can occur in random sequence;
- R.sup.1 and R.sup.2 are independently a C.sub.1-22 hydrocarbyl or a C.sub.1-22 substituted hydrocarbyl;
- X is --S-- or ##STR25## a is 0 or 1, b is 1 or 2 and a+b=2;
- and (b) a thiol compound selected from the group consisting of thiocarbonate, thionocarbamate, thiocarbanilide, thiophosphate, thiophosphinate, mercaptan, xanthogen formate, a xanthic ester and mixtures thereof.
Dependencies are inferred from the claim text.