Patent ID: 8088347

Claim:
Process for recovering copper sulphide and optionally molybdenum sulphide from a copper bearing ore by froth flotation comprising: crushing said ore to obtain ground powder, mixing the obtained ground powder with a mix of collectors comprising at least a first and second collector and water to obtain a slurry, aerating the slurry, removing and concentrating mineral froth formed at a surface of the slurry, wherein the first collector comprises a thioglycolic acid derivate having the following formula: R1 is N or O, R2 is an alkyl group having 2 to 12 carbon atoms, wherein the second collector is chosen from the group consisting of di-alkyl thionocarbamates, di-alkyl xanthogen formates, di-alkyl xanthogen esters, di-alkyl dithiophosphates, di-alkyl monothiophosphates, di-alkyl dithiocarbamates, phosphinates, and any of the xanthates, and wherein copper sulphide and optionally molybdenum sulphide are obtained.