江西某低品位复杂铜钨多金属矿石浮选工艺研究

Floatation Process Study on a Low-grade Complex Cu-S-W Polymetallic Ore from Jiangxi

江西某铜钨复杂多金属矿石铜品位为0.11%、硫品位为1.16%、WO_3含量为0.22%。矿石中白钨矿、黄铜矿均以中细粒嵌布为主,白钨矿在0.01~0.3 mm粒级占79.55%,黄铜矿在0.01~0.3 mm粒级占81.83%。为给该矿石的开发利用提供依据,在矿石性质分析基础上,采用铜硫混合浮选—分离浮选、混浮尾矿浮钨的工艺流程进行了试验。结果表明：原矿磨细至-0.074 mm占65%,以水玻璃为抑制剂、SN-9为捕收剂、BK201为起泡剂经2粗3精2扫铜硫混合浮选,混合浮选精矿以石灰为抑制剂、Z-200为捕收剂经1粗4精2扫铜硫分离浮选,混合浮选尾矿以碳酸钠为调整剂、水玻璃为抑制剂、W-1205为捕收剂经1粗3精3扫常温钨浮选,常温浮选精矿经1粗5精2扫加温（90℃）钨浮选,获得的铜精矿铜品位为24.13%、回收率为68.90%,硫精矿硫品位为36.15%、回收率为60.77%,钨精矿WO_3品位为62.24%、回收率为73.68%,试验指标较好,可以作为该铜钨多金属矿开发利用的技术依据。

There is 0. 11% Cu,1. 16% S,0. 22 WO_3 in a copper-tungsten polymetallic ore. Scheelite and chalcopyrite are mainly fine disseminated in the ore,79. 55% scheelite distributed in 0. 01 ~ 0. 3 mm fraction,while 81. 83% chalcopyrite distributed in 0. 01 ~ 0. 3 mm fraction. To provide technique basis for the development and utilization of the ore,on the basis of ore properties analysis,copper and sulphur bulk flotation-copper and sulphur separation flotation on the bulk flotation concentrate,tungsten flotation on the bulk flotation tailings was conducted. The results indicated that： at the grinding fineness of 65%passing 0. 074 mm,using sodium silicate as the inhibitor,SN-9 as collector,BK201 as foaming agent,by one roughing-three cleaning-two scavenging copper and sulphur bulk flotation,bulk flotation concentrate using lime as inhibitor,Z-200 as collector,by one roughing-four cleaning-two scavenging copper and sulphur separation flotation,bulk flotation tailings using sodium carbonate as regulator,sodium silicate as inhibitor,W-1205 as collector,by one roughing-three cleaning-three scavenging flotation at normal temperature,flotation concentrate via one roughing-five cleaning-two scavenging flotation at 90 ℃,copper concentrate with 24. 13% Cu and recovery 68. 90%,sulfur concentrate with 36. 15% S and recovery of 60. 77%,and tungsten concentrate with 62. 24% WO_3 and recovery of 73. 68%,were obtained. The test result is satisfactory,and can be used as technical basis for the development and utilization of the copper tungsten polymetallic ore.