电选预处理铜钼混合精矿及其对浮选的影响  

Pretreatment of copper molybdenum mixed concentrate by electric separation and its influence on flotation

作　　者：张萍 吴维明 邵延海[1] ZHANG Ping;WU Weiming;SHAO Yanhai(School of Land and Resources Engineering,Kunming University of Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093

出　　处：《矿冶》2023年第6期21-26,共6页Mining And Metallurgy

基　　金：云南省高层次人才引进计划项目(CCC21321005A)。

摘　　要：为探明电选预处理铜钼混合精矿对后续铜钼浮选分离的影响。利用响应曲面法设计了三因素三水平试验。试验结果表明,精矿产率最优电选设备参数为电压23.12 kV、电选机滚筒转速117.75 r/min、电选机精矿挡板角度4.18°;并对最优电选条件下的精矿进行粒度、多元素分析、X射线衍射分析(XRD)以及浮选试验。粒度分析表明电选后精矿有利于下一阶段辉钼矿浮选,多元素分析以及XRD证实电选对铜钼混合精矿起到了除杂效果,浮选试验结果显示电选后浮选辉钼矿品位与未处理变化不大,但回收率有所上升,证明电选预处理铜钼混合精矿有利于下一段浮选。To investigate the effect of electro-winning pretreatment of copper-molybdenum mixed concentrate on the subsequent copper-molybdenum flotation separation.A three-factor,three-level test was designed using the response surface method to consider the influence of the electrowinning equipment.The test results showed that the optimum electric separation equipment parameters for the concentrate rate were 23.12 KV,117.75 r/min drum speed of the electric separator,and 4.18°angle of the concentrate baffle of the electric separator.The concentrates were subjected to particle size analysis,multi-element analysis,X-ray diffraction(XRD)analysis and flotation tests under the optimum electrowinning conditions.The particle size analysis showed that the electrowinning concentrate was favorable to the next stage of pyromolybdenum flotation,and the multi-element analysis and XRD confirmed that the electrowinning had the effect of removing impurities from the copper-molybdenum mixed concentrate.The results of flotation test showed that the grade of molybdenite after electroseparation had little change compared to that without treatment,but the recovery rate increased,confirming that electroseparation pretreatment of Cu-Mo mixed concentrate was beneficial to the next stage of flotation.

关 键 词：电选 铜钼混合精矿 浮选 响应曲面法 粒度分析 

分 类 号：TD923[矿业工程—选矿] TD924