Aiming at copper flotation tailings containing WO3 and according to the ore properties of a skarn scheelite from GanSu ,this experiment studied the suitable conditions of flotation ,whose results show that the original process using collector ZL’s collecting ability is bad on fine tungsten ore .The experiment of the collectors (such as collector ZL ,ZL + LDZ ,ZL + GYB ,GYB + LDZ ) and inhibitor were studied respectively .Research results show that under the best dosage is 650g/t of the combination collector GYB :LDZ=2 .5:2 .5 ,the best dsage is 2 .5 kg/t of the inhibitor ,we obtained the best flotation indexes .Rough concentrate grade is 1 .24% but the recovery rate is 82 .31% .%以甘肃某地区的白钨矿床原矿含WO30．25％为研究对象，针对钨主要损失在铜硫混合尾矿中的现象做了系统的浮选条件优化试验研究，研究结果表明原流程使用的捕收剂ZL对细粒级钨矿的捕收能力差。本实验主要是对捕收剂ZL、新型组合捕收剂ZL＋ LDZ、ZL＋GYB、GYB＋ LDZ及抑制剂水玻璃进行试验研究，试验研究表明，采用新型的组合捕收剂GYB ：LDZ＝2．5：2．5在最佳用量为650g／t ，水玻璃用量为2．5kg／t时，得到最优的浮选指标，粗精矿品位1．24％、产率15．61％，回收率82．31％的良好指标。
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