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云南某锑矿石中碳的含量为10.85%，属于高碳难选锑矿石。针对该低品位高碳锑矿进行了浮选试验研究，结果表明：在磨矿细度-0.074 mm占70%的条件下，以柴油为捕收剂、2号油为起泡剂，经一粗一精一扫闭路流程，进行了预选脱碳浮选试验，获得了碳精矿中锑的品位为2.02%，回收率为1.51%；对碳浮选尾矿中的锑进行选矿回收，以硝酸铅为活化剂、丁基黄药为捕收剂、2号油为起泡剂，经一粗两精两扫闭路流程，试验最终获得了锑品位为26.97%，回收率为85.28%的良好指标。“,”Flotation experimental research was conducted on a low grade antimony ore with high carbon is 10.85% in Yunnan province. Pre-decarburization lfotation experiment was conducted, and the result shows that on the condition of grinding ifneness -0.074 mm content is 70%, diesel as collector, 2# oil as foaming agent, by adopting the closed circuit lfotation lfowsheet of one-stage roughing, one-stage cleaning and one-stage scavenging, a carbon concentrate with antimony grade is 2.02%, antimony recovery is 1.51% was obtained; antimony recovery was conducted on the tailings after pre-decarburization, lead nitrate as activator, butyl-xanthate as collector, 2# oil as foaming agent, by adopting the closed circuit lfotation lfowsheet of one-stage roughing, two-stage cleaning and two-stage scavenging, a good indicator with antimony grade is 26.97%, antimony recovery is 85.28% was obtained.