Abstract: Experimental research on a complex copper-nickel ore in Xinjiang has been done to recovery copper and nickel.Comparison tests for removing talc in advance-bulk flotation of Cu and Ni-separating Cu and Ni flowsheet and bulk flotation of Cu and Ni-separating Cu and Ni flowsheet were done.The bulk flotation of Cu and Ni-separating Cu and Ni flowsheet was used to recovery coper and nickel.The results of closed-circuit tests were as followings:copper concentrate containing 20.19% of Cu and 0.75% of Ni with copper recovery 66.09% ,and nickel concentrate containing 6.36% of Ni and 0.95% of Cu with nickel recovery 80.43%.

Key words: Copper-nickel sulfide ores, Bulk flotation, Copper-nickel separation