| 摘要 |
<p>New and improved processes and compositions for use in flotation recovery of metal values from base metal zinc sulfide ores are disclosed. The collector compositions for froth flotation of metal sulfide minerals comprise the combination of 1) at least one allylalkylthionocarbamate compound having formula (I), wherein R is a C2 to C8 alkyl radical, preferably R is an isobutyl group, and 2) a xanthate having formula (II), wherein R' is a C2 to C8 alkyl radical, preferably a C4 radical. More preferably, the C4 radical of the xanthate is a butyl or isopropyl group. Preferably, the concentration of allylalkylthionocarbamate to xanthate is a ratio of from about 1:99 to about 50:50 percent by weight.</p> |
