某含银铅锌矿石选矿试验研究

Experimental study on the processing of an Ag-bearing Pb-Zn ore

某含银铅锌矿石有价元素为铅、锌、银,铅品位0. 48%、锌品位1. 20%、银品位150 g/t。针对该矿石性质,进行了选矿试验研究,考察了磨矿细度、调整剂、捕收剂、抑制剂及活化剂等因素对浮选指标的影响。结果表明:采用优先浮铅—铅尾矿浮锌工艺流程,可获得较好试验指标;在最佳试验条件下,银铅精矿铅品位53. 28%、铅回收率84. 14%,银品位13 880. 85 g/t、银回收率70. 28%;锌精矿锌品位52. 02%、锌回收率83. 39%,银品位1 610. 42 g/t、银回收率20. 57%;铅、锌、银均得到了较好的富集和回收。

The valuable elements in an Ag-bearing Pb-Zn ore are Pb,Zn and Ag.The Pb grade is 0.48%,Zn grade is 1.20%and Ag grade is 150 g/t.According to the ore property,experimental study was carried out to investigate the influence of the factors of grinding fineness,modifier,collector,inhibitor and activator on flotation index.The results show that preferential Pb flotation-Zn flotation from Pb tailings flow sheet can obtain good test index;under optimal conditions,Pb grade is 53.28%and Pb recovery rate is 84.14%,Ag grade 13 880.85 g/t and Ag recovery rate is 70.28%in Ag-Pb concentrates;Zn grade is 52.02%and Zn recovery rate is 83.39%,Ag grade is 1 610.42 g/t and Ag recovery rate is 20.57%in Zn concentrates.Pb,Zn and Ag are well concentrated and recovered.