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海南某地钨钼矿原矿含Mo 0.56%,WO3 0.28%,Fe 2.44%,钼主要以辉钼矿形式赋存于矿石中,钨主要以白钨矿和黑钨矿形式赋存于矿石中,铁主要以磁铁矿形式赋存于矿石中,属于低品位钨钼铁多金属矿。采用一次粗选一次扫选四次精选的浮选工艺回收钼,浮选尾矿采用弱磁选回收磁铁矿,一次粗选两次精选的重选工艺回收钨。通过试验得到了适合该钨钼多金属矿选矿的浮选-弱磁选-重选工艺流程,该工艺可以得到Mo品位为45.86%,含WO3 0.07%,含Fe为1.12%,回收率为88.19%的钼精矿;WO3品位72.80%,含Fe 0.07%,含Mo0.02%,回收率为82.88%的钨精矿;Fe品位为56.88%,含WO3 0.06%,含Mo 0.03%,回收率为50.15%的铁精矿,实现了对低品位钼钨铁多金属矿的综合回收利用。
The tungsten ore from a certain place in Hainan contains 0.56% Mo, 0.28% WO3 and 2.44% Fe. Molybdenum mainly occurs in the ore as molybdenite. The tungsten mainly occurs in scheelite and scheelite ore, Iron mainly in the form of magnetite hosted in ore, belonging to the low grade tungsten molybdenum iron polymetallic ore. A rough selection once sweep four selected flotation process recovery molybdenum, flotation tailings using weak magnetic separation recovery of magnetite, a rough selection of two re-election process of recycling tungsten. The flotation-weak magnetic separation-re-selection process suitable for the tungsten-molybdenum polymetallic ore beneficiation was obtained through experiments. The results show that the Mo grade is 45.86%, the content of WO3 is 0.07%, the content of Fe is 1.12% and the recovery is 88.19 % Of molybdenum concentrate; WO3 grade of 72.80%, containing 0.07% Fe, containing 0.02% Mo, a recovery rate of 82.88% tungsten concentrate; Fe grade 56.88%, containing WO3 0.06%, containing Mo 0.03% For 50.15% of the iron concentrate, to achieve a comprehensive recovery of low-grade molybdenum tungsten iron polymetallic ore recycling.