1977年,瑞典中部Yxsjberg选矿厂新的白钨矿浮选法开始生产。尽管这些矿物的浮游性质相似,从平均含白钨矿0.5％、萤石7％、白云石5％的给矿中生产出WO_3为68—75％,回收率为80％的精矿。在浮选白钨矿之前,于作业之前部浮出矿石中所含～0.7％的黄铜矿,此时矿石中含5％的磁黄铁矿和白钨矿呈抑制 In 1977, a new scheelite flotation process was started at the Yxsjberg concentrator in central Sweden. In spite of the similar planktonic properties of these minerals, concentrates with a WO_3 of 68-75% and a recovery of 80% were produced from an average ore containing 0.5% scheelite, 7% fluorite and 5% dolomite. Prior to the flotation of scheelite, ~0.7% of the chalcopyrite contained in the ore surfaced in front of the job, with 5% pyrrhotite and scheelite in the ore being inhibited