西藏某富银难选铜铅锌硫化矿选矿试验研究  

Experimental Study on a Refractory Rich Silver-lead-zinc Sulfide Ore Bearing Copper from Tibet

作　　者：赵强[1] 丁士瑞 周南 崔宝玉[1] 

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819 [2]辽宁省地质矿产研究院,辽宁沈阳110800

出　　处：《矿产保护与利用》2017年第2期39-46,共8页Conservation and Utilization of Mineral Resources

基　　金："十二五"国家科技支撑计划项目(2012BAB01B03)

摘　　要：针对西藏某富银难选铜铅锌硫化矿矿物共生关系密切、嵌布粒度细且不均匀、相互包裹严重等特点,采用铜铅锌混浮—精矿再磨—铜铅混浮—铜铅分离的浮选流程进行了选矿试验。通过条件试验,确定了矿石最佳磨矿细度和浮选药剂制度。在此基础上进行了闭路试验,最终获得的铜精矿品位为14.48%,回收率为59.72%;铅精矿品位为53.74%,回收率为88.78%;锌精矿品位为57.18%,回收率为84.57%。同时铜精矿中金的品位为73.30 g/t,回收率为41.47%,银品位为12 507 g/t,回收率为83.12%。矿石中铅、锌、铜、金、银等有价元素都得到有效的回收。In view of the characteristics of a refractory rich silver - bearing copper - lead - zinc sul-fide ore in Tibet, namely valuable minerals with a close paragenetic relationship, uneven fine dis-semination and serious inclusions, a flotation process consisting of copper - lead - zinc bulk flota-tion, regrinding, copper - lead bulk flotation and separation was adopted. Based on the condition tests, the best grinding fineness and the optimal consumptions of flotation reagents were deter-mined. Then, the closed circuit flotation experiment was conducted. The results indicated that un-der the optimum conditions, the copper concentrate with grade of 14. 48% and a recovery of 59. 72% , the lead concentrate with grade of 53.74%and a recovery of 88. 78% , and the zinc con-centrate with a grade of 57. 18% and a recovery of 84. 57% were obtained. Meanwhile, the associ-ated gold with a grade of 73. 30 g/t and a recovery of 41.47% and the associated silver with a grade of 12 507 g/t and a recovery of 83. 12% were enriched in copper concentrate. Therefore, valuable elements of lead, zinc, copper, gold and silver could be effectively separated and recov-ered.

关 键 词：铜铅锌硫化矿 混合浮选 铜铅混浮 铜铅分离 

分 类 号：TD952.1[矿业工程—选矿] TD952.2