C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/319, 361/4,
C08F 228/04 (2006.01) B03D 1/002 (2006.01) B03D 1/004 (2006.01) B03D 1/016 (2006.01) B03D 1/02 (2006.01) C08F 220/54 (2006.01) C08F 226/00 (2006.01)
Patent
CA 1338110
A method for the benefication of value sulfide minerals from sulfide ores with selective separation of sulfide minerals which comprises: a) providing an aqueous pulp slurry of finely-divided, liberated ore particles; b) conditioning said pulp slurry with an effective amount of a synthetic depressant, a sulfide mineral collector and a frothing agent, respectively, said depressant comprising a polymer comprising: (i) x units of the formula: Image (ii) y units of the formula: Image (iii) z units of the formula: ? Z ? wherein each of R, R1 and R2, is, individually, hydrogen or a C1-C4 alkyl group, R3 is hydrogen, a C1-C4 alkyl group or a C6-C10 aryl, R4 and R5 are, individually, hydrogen a C1-C4 hydrocarbon group or a C6-C10 aryl group and Z represents the polymerization residue of a monoethylenically unsaturated monomer copolymerizable with units x and y; y is a mole percent fraction ranging from about 1.0% to about 50.0%, by weight, based on the total weight of x, y, and z; z is a mole percent fraction ranging from about 0% to about 50.0%, by weight, same basis, x represents 100 mole percent minus y mole percent minus z mole percent by weight, same basis and the molecular weight of said polymer is between about 1000 and about 1,000,000; and c) collecting the value sulfide mineral by froth flotation.
596738
Lipp David Wesley
Nagaraj D. R.
American Cyanamid Company
Smart & Biggar
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