难选白钨矿重—浮选矿新工艺的研究

根据矿石工艺矿物学性质，采用棒磨一细筛闭路磨矿，螺旋溜槽重选，细泥浮选的重一浮联合流程选白钨矿，重选可丢弃约3／4的尾矿，对品位（WO3）30．5％的重选粗精矿，可用常温浮选精选；对产率不足1／5的细泥矿，用常规浮选工艺选白钨矿，原矿品位为1．47％时，可获得白钨精矿品位66．58％，回收率82．15％，与全浮流程相比，回收率接近，但重一浮工艺的选矿成本较低。

Study on a new gravity-flotation technique for processing scheelite

A gravity|flotation flowsheet was used to process scheelite ore, which includes rod mill|fine sieve in closed circuit grinding, gravity separation with spiral chute and slime flotation, in the light of the ore's process mineralogy. The tailings, amounting to about 3/4 of yield can be discarded by gravity separation, the gravity rough concentrate with WO-3 content of 30.5% can be cleaned by flotation at ambient temperature, while the slime in the outer ring of spiral, amounting to less than 1/5 of the yield, can be separated by a conventional flotation process. The crude ore containing 1.47% WO-3 can become a scheelite concentrate containing 66.58% WO-3 by the use of the gravity|flotation flowsheet, with the recovery being 82.15%, which is close to that by overal flotation flowsheet, but the former's processing cost is lower.