Application of selenium-containing organic compounds in copper sulfide flotation collectors

An application of a class of selenium-containing organic compounds in copper sulfide flotation collectors, wherein the selenium-containing organic compounds comprise organic compounds with selenium atoms as functional groups and containing single selenium atom or multiple selenium atoms and organic compound containing selenium atoms combined with nitrogen, oxygen, phosphorus, sulfur and carbon, wherein the selenium-containing organic compounds comprise at least one of selenophene, phenylselenol, diselenide, selenomethyl ester, carbonyl selenomethyl ester and oxycarbonyl selenomethyl ester, selenourea, selenium nitrogen, selenoxanthonic acid, selenoxanthate, selenophosphoric acid, selenium phosphate ester, triphenylphosphine selenide, or benzoselenediazole molecules as copper collectors, comprising:

• grinding copper sulfide-containing ore to a fineness of 200 mesh with 65% passing rate to yield a screened copper sulfide-containing ore, followed by pulp conditioning of the screened copper sulfide-containing ore with lime as a pH regulator for 3 minutes;
• adding a foaming agent to the pulp and conditioning for 2 minutes;
• adding the selenium-containing organic compounds as a collector to the pulp and conditioning for 2 minutes;
• and
• performing flotation to recover copper sulfide minerals.