某银多金属矿石综合回收试验研究

Experimental study on comprehensive recovery of a silver polymetallic ore

摘要: 针对某银多金属矿石，在系统的工艺矿物学研究基础上，开展了小型试验研究，确定了最佳工艺流程和工艺条件。结果表明：采用银铅部分优先浮选—尾矿选锌工艺流程，在磨矿细度-0.045 mm占85%、CG801用量2 000 g/t，锌浮选硫酸铜用量400 g/t及其他最佳条件下，获得了较好指标，银铅精矿中银、铅品位分别为14 999.71 g/t、25.09%，银、铅回收率分别为87.70%、91.82%；锌精矿中银、锌品位分别为1 398.98 g/t、41.97%，银回收率为1.74%，锌回收率为64.12%；银总回收率为89.44%。

Abstract: In the case study of a silver polymetallic ore,based on a systematic mineralogy study,a small-scale test is carried out to determine optimal process flow and process conditions.The results show that when the process flow of silver lead partial preferential flotation-zinc recovery from tailings is used,grinding fineness of -0.045 mm accounts for 85 %,CG801 dosage is 2 000 g/t,CuSO4 dosage in zinc flotation is 400 g/t,and so on,good indexes are obtained.Silver and lead in silver lead concentrates are 14 999.71 g/t and 25.09 % respectively,silver and lead recovery rates are 87.70 % and 91.82 % respectively;silver and zinc grades in zinc concentrates are 1 398.98 g/t and 41.97 %,the silver recovery rate is 1.74 %,the zinc recovery rate is 64.12 %;total silver recovery rate is 89.44 %.