Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1996-06-14
1997-02-04
Lithgow, Thomas M.
Classifying, separating, and assorting solids
Fluid suspension
Liquid
252 61, B03D 102, B03D 106, B03D 1004
Patent
active
055994423
ABSTRACT:
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 combination of 1) at least one allylalkylthionocarbamate compound having the formula ##STR1## wherein R is a C.sub.2 to C.sub.8 alkyl radical, preferably R is an isobutyl group, and 2) a xanthate having the formula ##STR2## wherein R' is a C.sub.2 to C.sub.8 alkyl radical, preferably a C.sub.4 radical. More preferably, the C.sub.4 radical of the xanthate is a butyl or isopropyl group. Preferably, the concentration of allylalkylthionocarbamate to xanthate of a ratio of from about 1:99 to about 50:50 percent by weight.
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Avotins Peter
Lee Danny
McRae Colin
Cytec Technology Corp.
Lau Bernard
Lithgow Thomas M.
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