某微细粒难选铅矿浮选试验研究  

Test study on flotation of a microfine refractory lead ore

作　　者：袁艳[1] 杨俊龙[1] 沈光坤 

机构地区：[1]西北矿冶研究院矿物工程研究所,甘肃白银730900

出　　处：《矿山机械》2016年第3期55-59,共5页Mining & Processing Equipment

摘　　要：结合低品位微细粒难选铅矿的矿石性质研究,通过探索试验,确定采用先硫后氧粗精矿再磨再选的原则工艺流程。以(NH_4)_2CO_3为调整剂,水玻璃为抑制剂和矿泥分散剂,Na_2S为氧化铅矿物的活化剂,D_(421)作为铅矿物的捕收剂,通过闭路试验,获得了硫化铅精矿中铅品位为61.20%、回收率为67.02%,氧化铅精矿中铅品位为36.76%、回收率为12.29%,铅精矿品位为55.48%,总回收率为79.31%的较好指标,实现了矿产资源的综合回收利用。According to the properties of a low-grade microfine refractory lead ore, exploratory test was conducted to determine the principle process flow involved first sulphide and then oxide as well as regrinding and reconcentration of coarse concentrate.（NH4）_2CO_3 was used as the adjusting agent, sodium silicate as the inhibitor and the slime dispersant, Na_2S as the activator for lead oxide, D_（421） as the collector for lead mineral, after closed-circuit test, the following products were obtained： lead sulphide concentrate with lead grade of 61.20% and recovery rate of 67.02%, lead oxide concentrate with lead grade of 36.76% and recovery rate of 12.29%. The total lead concentrate grade was 55.48% and total recovery rate was 79.31%. With such good indexes, comprehensive recovery and utilization of mineral resources were realized.

关 键 词：难选铅矿 低品位 微细粒嵌布 高氧化率 

分 类 号：TD923[矿业工程—选矿] TD952