云南某铜铅锌多金属硫化矿石浮选试验

Study on the Floatation of a Copper-Lead-Zinc Poly-metallic Sulfidation Ore from Yunnan Province

云南某铜铅锌多金属硫化矿石铜、铅、锌含量分别为0.58%、0.75%、3.01%,有害元素砷含量低。为开发利用该矿石,对其进行了选矿试验研究。结果表明:在磨矿细度为-0.074 mm占85%条件下,以硫代硫酸钠、腐殖酸钠、六偏磷酸钠为脉石抑制剂、硫酸锌为锌矿物抑制剂、乙基黄药为捕收剂进行铜铅混合优先浮选,铜铅混合精矿以石灰为pH调整剂、EMY-306为抑制剂、Z-200为捕收剂进行铜铅分离,铜铅混浮尾矿以硫酸铜为活化剂、丁基黄药为捕收剂进行锌浮选,获得的铜精矿铜品位为26.09%、回收率为71.25%,铅精矿铅品位为48.82%、回收率为69.21%,锌精矿锌品位为49.80%、回收率为87.78%。试验取得了较好的分选指标,为该矿石资源的开发利用提供了技术依据。

There is 0. 58% copper,0. 75% lead,and 3. 01% zinc in a poly-metallic sulfide ore from Yunnan,with low content of harmful element arsenic. Beneficiation experiments were conducted on the ore to develop and utilize the ore. The results indicated that,at the grinding fineness of 85% passing 0. 074 mm,with sodium thiosulfate,sodium hexametaphosphate,and humic acid as gangue inhibitors,sulfide zinc sulphate as zinc mineral inhibitor,and ethyl xanthate as collector via copper and lead bulk preference flotation,separation of copper from lead for bulk concentrate using slime as pH modifiers,EMY-306 as gangue inhibitors,Z-200 as collector,zinc flotation using copper sulfate as the activator,butyl xanthate as collector,copper concentrate with 26. 09% Cu and recovery of 71. 25%,lead concentrate with 48. 82% Pb and recovery of 69. 21%,and zinc concentrate with 49. 80% Zn and recovery of 87. 78% are obtained respectively. Good beneficiation test results had been obtained,which provide technique basis for reasonably recovery of the resource.