某金精矿中铅综合回收流程对比试验研究  

Experimental Study on the Comprehensive Recovery Process of Lead in A Gold Concentrate

作　　者：吕良[1,2] 姚旗升 岳铁兵[1,2] 曹飞[1,2] 张耀 刘磊[1,2] LYU Liang;YAO Qisheng;YUE Tiebing;CAO Fei;ZHANG Yao;LIU Lei(Zhengzhou Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Zhengzhou 450006, China;Key Laboratory of Evaluation and Multipurpose Utilization of Polymetallic Ores of Ministry of Natural Resources, Zhengzhou 450006, China;The First Geological Prospecting Group, Henan Provincial Geological Bureau, Luoyang 471023, China)

机构地区：[1]中国地质科学院郑州矿产综合利用研究所,河南郑州450006 [2]自然资源部多金属矿评价与综合利用重点实验室,河南郑州450006 [3]河南省地矿局第一地质调查队,河南洛阳471023

出　　处：《矿产保护与利用》2018年第6期60-64,共5页Conservation and Utilization of Mineral Resources

基　　金：中国地质调查局地质调查项目(DD20160072)

摘　　要：为了有效回收某金精矿中的铅,针对金品位45. 60 g/t、铅3. 01%的浮选金精矿,进行了选矿流程方案技术经济对比。试验结果表明:最终采用铅硫分离—铅、硫精矿分别再磨浸出工艺替代原有金精矿再磨浸出工艺,不仅可以综合回收伴生的方铅矿,而且可提高金银回收率,获得指标为:铅精矿铅品位56. 73%、回收率79. 83%,金总回收率为94. 55%,银总回收率为91. 67%,分别高出现场生产工艺3. 85、9. 42个百分点。该工艺解决了从原矿直接进行金、铅分离成本高、从浸渣中回收泥化方铅矿难的问题,分别再磨浸出避免了部分金进入铅精矿中导致金收益低的问题,有效提高了该类伴生资源综合利用水平。Taking a gold concentrate containing45.60g/t Au and3.01%Pb as the research object,a process of lead-sulfur flotation separation,regrinding and leaching was finally selected to replace the original regrinding-leaching process based on the technical and economic comparison of beneficiation process.The associated galena was comprehensively recovered with a grade of 56.73% and a recovery of 79.83% in the lead concentrate,and the recoveries of gold and silver were also improved.The total recoveries of gold and silver were 94.55% and 91.67%,respectively,which were 3.85 and 9.42 percentage points higher than those of the original process.The process solves the problem of high production cost from raw ore and the difficulty in recovering fine-grained galena from the leaching residues.Meanwhile,separate grinding and leaching avoids the misplacement of some gold in lead concentrate,thereby effectively improving the comprehensive utilization level of associated resources.

关 键 词：金矿 铅 综合利用 选矿工艺 浸出 浮选 

分 类 号：TD952.2[矿业工程—选矿]