云南某白钨矿常温浮选工艺研究

Research on floatation at ambient temperature for a scheelite ore in Yunnan

云南某钨矿的萤石、方解石含量较高,采用常温浮选回收钨难度较大.针对矿石性质,采用"优先浮硫-白钨常温浮选"的工艺,用新型捕收剂FW作白钨矿的捕收剂,常温精选段用水玻璃作调整剂回收白钨矿.对钨品位0.32%的原矿,获得钨精矿品位51.78%、回收率81.44%的选矿技术指标.

Great difficulties existed for recovering tungsten by flotation at ambient temperature from certain tungsten ore highly containing fluorite and calcite in Yunnan. According to the properties of the ore, the technological flowsheet of selective flotation of sulfur-flotation of scheelite at ambient temperature was a- dopted, and FW, as a new collector for scheelite, and sodium silicate as the modifier in the cleaning process were used to recover scheelite. The scheelite concentrate with grade of 51. 78% and recovery of 81.44% was obtained from raw ore containing 0.32% WO3.