This paper studies the technological flowsheet of processing low grade scheelite from bismuth-zinc-iron floatation tailings containing WO3 at the rate of 0.12%. Mineral processes of medium intensity magnetic separation-flotation, medium intensity magnetic separation-high intensity magnetic separation-flotation are performed. The lab test shows that the scheelite concentrates with the grade of>65%can be obtained. The recovery rates are 72.43%and 65.76%respectively.% 根据工艺矿物学研究，对含WO30.12%的某大型铋锌铁矿浮选尾矿，采用“中磁磁选-浮选”和“中磁磁选-强磁-浮选”选矿工艺流程进行选别，小型试验结果为两种流程均可获得WO3＞65%的白钨精矿，对中磁非磁产品回收率分别为72.43%和65.76%。
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