| Citation: | WANG Tingxia, LI Jianmin, LIU Kun, GAO Chenggang. Experimental Study on Fine Slime Dressing of Wolframite and Scheelite with Floatation-Magnetic Separation-Gravity Concentration Combined Process[J]. Conservation and Utilization of Mineral Resources, 2021, 41(5): 38-42. doi: 10.13779/j.cnki.issn1001-0076.2021.05.006 | 
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%.
 
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			        Source of test sample
Flowsheet of scheelite flotation
Effect of sodium carbonate dosage on scheelite flotation
Effect of sodium silicate dosage on scheelite flotation
Effect of 731 dosage on scheelite flotation
Flowsheet of wolframite dressing
Effect of magnetic field strength on wolframite magnetic separation
Flowsheet of closed-circuit tests