Patent ID: 7011216

Claim:
A froth flotation process for beneficiating an ore, comprising: forming a slurry comprising water and particles of an ore, the ore containing sulfide minerals; intermixing said slurry with effective amounts of a frothing agent and a collector to form a froth containing beneficiated sulfide minerals; and collecting said beneficiated sulfide minerals; the collector comprising an N-butoxycarbonyl-O-alkylthionocarbamate selected from the group consisting of N-butoxycarbonyl-O-methylthionocarbamate, N-butoxycarbonyl-O-ethylthionocarbamate, N-butoxycarbonyl-O-propylthionono-carbamate, N-butoxycarbonyl-O-pentylthionocarbamate, and N-butoxycarbonyl-O-hexylthionocarbamate.