从某低品位多金属矿中回收黑白钨矿的选矿试验研究

Experiment research on mineral processing of recycling wolframite and scheelite from a low grade polymetallic ore

摘要: 某复杂低品位黑白矿属世界级难选矿石,含WO₃0.26%,WO₃在白钨矿、黑钨矿和钨华中分布率为82.69%、13.85%、3.46%,小于0.074mm粒级占90%以上。虽然经多年的研究工作,钨的回收率仅为65%。为了提高钨回收率,经试验研究,采用新型选矿药剂TAB-3和合理的工艺流程(浮-磁-浮选矿工艺流程),获得白钨精矿品位WO₃74.57%、回收率69.47%,黑钨精矿品位WO₃ 28.88%、回收率8.08%,总钨回收率为77.55%。

Abstract: A complex and low grade wolframite-scheelite associated ore belongs to a world-class refractory one, which is assaying WO₃ 0.26% with distribution of WO₃ in scheelite, wolframite and tungstite being 82.69%、13.85%、3.46% respectively. And more than 90% of grains size is less than 0.074 mm. However the recovey of WO₃ was just 65% after years research. In order to improve recoverage of WO₃, a new mineral processing reagent TAB-3 and a reasonable flowsheet (flotation-magnetic separation-flotation) are adopted after experiment research, the scheelite concentrate assaying WO₃ 74.57% with recovery 69.47% and wolframite concentrate assaying WO₃ 28.88% with recovery 8.08% are obtained with total recovery WO₃ 77.55%.