摘要:
河北某低品位铅锌矿金属矿物嵌布粒度大小不等,共生关系复杂,部分锌矿物可浮性好,含有大量易泥化的绢云母和可溶性盐类.多种选矿流程方案的对比试验结果表明,高碱下优先浮选流程的分选指标优于其它方案.闭路试验可获得铅品位55.37%、回收率为83.65%,含银417g/t、银回收率为67.36%的铅精矿;以及锌品位45.25%、回收率82.46%的锌精矿.采用乙硫氮+丁铵黑药作为铅矿物的捕收剂,可提高伴生银的回收率.
Abstract:
A low grade lead-zinc ore in Hebei province,which metal mineral particle size range is wide and symbiotic relationship is complex.It contain some easy to float zinc minerals,a large number of easy to mud silk mica and soluble salts.The comparison test results show that the separation index of high alkali preferential flotation process is better than other schemes.Closed circuit test can obtain lead concentrate,which grade is 55.37%,recovery rate is 83.65%,and contain silver 417g/t,recovery rate 67.36%;Closed circuit test also can obtain zinc concentrate,which grade is 45.25%,recovery rate is 82.46%.The recovery rate of associate silver can be improved by using diethyldithiocarbamates +ammonium butyl as collector of lead minerals.
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