Investigation and Study on the Lead Flotation Process of Cyanide Tailings from a Gold Mine
After process investigation,it was found that both copper and lead flotation have problems with low concentrate grade and low recovery rate.Based on the actual situation on site and combined with various indicator data,the lead flotation combines the Jingyi tailings with the Sweeping No.2 concentrate and returns them to the Sweeping No.1 operation.Additional reagent points are set up in the sweeping operation to increase the flotation time of lead sulfide minerals;Use ZnS to suppress copper,zinc,and iron,expand the difference in floatability with lead,and improve the grade of lead concentrate.The copper flotation operation uses composite reagents,adds inhibitors,and combines the selected tailings with the second concentrate to return to the first operation.The second operation sets up additional reagent points to increase the quality of the intermediate ore returned to the process.After adjustment,the grade of lead concentrate was increased to 21.98%,and the lead recovery rate was increased to 45.28%,meeting production requirements.After the adjustment of copper flotation,the grade of copper concentrate increased to 10.51%,and the recovery rate of copper increased to 65.19%,meeting production requirements.
万方数据
维普
