Abstract: In order to provide the basis for Cu-Pb-Zn polymetallic sulphide ore in Qibaoshan Jiangxi province further optimized renovation, the high-effective collector LP-01 was selected as Cu collector and LP-11 as Pb collector, which were self-developed by Jiangxi University of Science and Technology, and butyl xanthate for Zn, the mixed reagent of ZnSO₄ and Na₂SO₃ as Pb and Zn depressor. A better separation index was obtained through the selective floatation test of Cu-Pb-Zn, Cu concentrate with Cu grade of 19.84% and recovery of 60.25%, Pb concentrate with Pb grade of 72.34% and recovery of 73.04% and Zn concentrate with Zn grade and recovery of 50.55% and 88.46% respectively. Each of Cu, Pb, Zn gets the successful recovery.

Key words: Cu-Pb-Zn polymetallic sulfide ore, Preferential floatation, Cu collector LP-01, Pb collector LP-11