| 摘要 |
<p>Froth flotation processes, useful for beneficiating base metal m ineral valu es from metal sulfide ore, utilize a collector comprising an N-butoxycarbonyl-O - alkylthionocarbamate selected from the group consisting of N-butoxycarbonyl- O- methylthionocarbamate, N-butoxycarbonyl-O-etkylthionocarbamate, N- butoxycarbonyl-O-propylthiononocarbamate, N-butoxycarbonyl-O- buylthionocarbamate, N-butoxycarbonyl-O-pentylthionocarbamate, and N- butoxycarbonyl-O-hexylthionocarbamate.</p> |
