浮选—磁选—重选联合工艺分选某风化型黑白钨细泥研究

为解决某选矿厂钨矿细泥对浮选工艺的影响，针对原矿洗矿后的微细粒风化细泥研发出白钨矿浮选—黒钨矿磁选粗选—摇床精选工艺，即利用高速剪切搅拌桶+旋流微泡浮选柱的设备组合浮选回收白钨矿，浮选尾矿经高梯度磁选机预选、摇床精选工艺产出黑钨矿精矿，产出的白钨矿粗精矿进入选矿厂原加温精选作业。试验结果表明：当样品WO3品位0.96%时，可获得WO3品位5.04%、WO3回收率71.80%的白钨粗矿精矿和WO3品位52.41%、WO3回收率20.86%的合格黑钨精矿，WO3综合回收率92.66%。

Experimental Study on Fine Slime Dressing of Wolframite and Scheelite with Floatation -Magnetic Separation -Gravity Concentration Combined Process

In order to solve the impact of the tungsten slime on the flotation operation, after the ore is washed, the new asynchronous separation process of"scheelite flotation-wolframite magnetic rough separation-table cleaning"was developed for tungsten slime, that is, flotation and recovery of scheelite using a combination of high-speed shear mixing barrel+ cyclonic micro-bubble flotation column, the flotation tailings are pre-selected by high gradient magnetic separator and the table cleaning produces wolframite concentrate, the produced rough scheelite concentrate is feeds further in the original heating and cleaning process. The test results showe that when the feed ore grade is 0.96% WO₃, the grade of scheelite concentrate is 5.04% and the recovery is 71.80%; the grade of wolframite concentrate is 52.41% and the recovery is 20.86%, and the comprehensive recovery is 92.66%.