粉矿湿式预选在金岭铁矿选矿厂的应用

为提前抛弃部分最终尾矿，提高入选矿石品位，降低磨矿能耗，通过实验室试验和半工业试验，证明了粉矿湿式预选技术预选尾矿铁品位仅为4．38％，铜品位0．038％，钴品位0．0103％，均低于或接近湿选尾矿品位，完全可以作为合格尾矿抛去．应用表明，球磨机处理量达到40t／h，比设湿式预选作业前提高5t／h，废石品位符合抛废要求，抛废产率为8.04％，每年可创经济效益70万元以上．

Application of Wet Preconcentration Technique of Powder Ore in Jinling Concentration Mill

In order to throw off part final tailings in advance, increase concentrating grade, decrease power consume of milling, the laboratory experiment and half-industry scale experiment have proved that the iron grade of preconcentrating tailings only is 4.38%, copper grade is 0.038%, cobalt grade is 0.0103% through powder ore wet preconcentrating technique and these indexes are low or approaching the grade of wet concentrating tailings, and they can be thrown off as qualified tailings. The application has proved that the treating quantity of ball crusher is up to 40t/h, it is increasing by 5t/h compared with before of setting wet preconcentrating work, the waste ore grade is according with the demands of throwing off, the productivity of throwing off waste ore is 8.04%, the profit is more than o.7 million yuan RMB every year.