某含铜金矿石选冶联合工艺优化试验研究

Experimental research on optimization of the metallurgical process for a copper-containing gold ore

某含铜金矿石中金品位3.80 g/t、铜品位0.84%、S^(2-)品位4.06%,金嵌布粒度微细,矿石性质复杂。针对该矿石性质,对设计的全硫浮选+尾矿氰化工艺进行了药剂制度和流程优化。结果表明:通过采用捕收剂丁基黄药+丁铵黑药替代丁基黄药+丁铵黑药+Z-200,中矿单独精、扫选抛尾优化流程等,简化了药剂制度,降低了药剂成本,提高了金、铜回收率;工艺优化后金总回收率提高1.03百分点,铜总回收率提高2.56百分点,处理每吨原矿药剂成本降低4.0元,且显著减小了铜对浮选尾矿氰化工艺的不利影响,技术经济效果显著。

The gold grade of a copper-containing gold ore is 3.80 g/t,the copper grade is 0.84%,and the S^(2-) grade is 4.06%.The gold dissemination is microfine.The ore property is complex.Based on the ore property,the designed all-sulfide flotation+tailings cyanidation process has been optimized on its reagent regime and flow.The results show that when butyl xanthate+ammonium dibutyl dithiophosphate is used as collector instead of xanthate+ammonium dibutyl dithiophosphate+Z-200 and the optimized flowsheet of cleaning scavenging tailings removal is carried out for middling alone,the reagent regime is simplified,the reagent cost is reduced and the recovery rates of gold and copper are improved;after the process is optimized,the overall gold recovery rate is increased by 1.03 percentage points,the overall copper recovery rate is increased by 2.56 percentage points,and reagent cost is reduced by 4.0 yuan/t When run-of-mill ores are treated.Besides,there is a significant reduction in the adverse effects of copper on the cyanidation process of flotation tailings.The technical and economic effects of the optimized process are significantly improved.