Abstract: The Cu-Bi multi-metal ores in Jiangxi were treated by adopting the Cu-Bi mixed flotation - Cu-Bi separation flotation techniques with new type of organic depressant XTL-3 to realize the high efficient Cu-Bi cyanide-free separation. With the grinding fineness of -74 μm 70%, copper concentrate grading of 27.51% at an 88.71% recovery and bismuth grading of 20.14% at a 77.58% recovery were obtained respectively. Meanwhile, Bismuth content in copper concentrate is 0.14%, and Copper in bismuth concentrate is 2.13%.

Key words: Cu-Bi multi-metal ores, New-type depressant XTL-3, Cu-Bi cyanide-free flotation process