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某含铋白钨矿石中含Bi 0.074%,含WO_30.19%,有用矿物嵌布粒度较细,含泥量大,且方解石较多,属于高含钙、粒度细的难选低品位白钨矿。对该白钨矿进行了大量的工艺条件试验研究,结果表明:在磨矿细度-0.074 mm占87.5%条件下,以乙硫氮+丁基黄药为铋粗选捕收剂、BK-205为起泡剂、石灰和水玻璃为铋精选抑制剂,经一粗三精二扫的闭路流程,获得了含Bi 20.44%,Bi回收率为66.29%的铋精矿;调节铋浮选尾矿矿浆p H值为9左右,以水玻璃为抑制剂、ZL为白钨捕收剂,经一粗二精二扫闭路流程获得白钨粗精矿;白钨粗精矿经过浓缩加温后,经一粗三精二扫闭路流程,获得了含WO_361.62%,WO_3回收率为81.08%的白钨精矿,回收指标良好。
Some bismuth-containing scheelite containing Bi 0.074%, containing WO_30.19%, useful minerals buried cloth size smaller, mud content, and more calcite, belonging to the high calcium, fine particle size of the low-grade white tungsten mine. A large number of experimental conditions were studied for the scheelite. The results showed that BZ-B was selected as raw material for the bismuth concentrator under the conditions of grinding fineness of -0.074 mm and 87.5% 205 as a foaming agent, lime and water glass as a bismuth inhibitor, bismuth concentrate containing 20.44% of Bi and 66.29% of Bi was obtained through a closed circuit process of crude three-precision and two-sweep; Tailings pulp p H value of about 9 to water glass as a inhibitor, ZL is a white tungsten collector, a rough two fine two sweep closed-circuit process to obtain scheelite crude concentrate; scheelite crude concentrate after concentration heating After a crude three fine two sweep closed-circuit process, obtained with WO_361.62%, WO_3 recovery rate of 81.08% of scheelite, recovery indicators are good.