阿勒泰某铜铅锌矿提铅降锌浮选工艺

Floatation Technology for Lead Upgrading and Zinc Degrading of Altay Cu-Pb-Zn Ore

为降低铅精矿中锌的含量,同时实现铜铅的有效分离,采用铜铅混浮—混浮尾矿选锌的工艺流程,以石灰和硫化钠抑制黄铁矿及部分难免离子,乙硫氮和Z-200浮选铜铅矿物。铜铅粗精矿再磨,细度达到-38μm占85%后,采用硫化钠与活性炭联合脱药,组合重铬酸钾与CMC抑制铅矿物,以Z-200浮选黄铜矿,获得含铜20.13%、含铅6.02%、铜回收率85.09%的铜精矿和含铅48.56%、含锌7.54%、铅回收率77.35%的铅精矿,使铅精矿的锌含量由15%降低到7.54%。

In order to reduce zinc content in lead concentrate and effectively separate copper from lead,the floatation technology of copper and lead mixing float and tailing recovering zinc is adopted,the lime and sodium sulfide are applied to suppress pyrite and some inevitable ions,copper and lead minerals are floated with Z-200 and SN-9 in mixed concentrate. The copper-lead rough concentrate is regrinded to fineness up to-38 μm 85%,the Na2 S and activate carbon are simultaneously used for reagent removal,K2Cr2O7 and CMC as the combined depressants for galena and Z-200 as Cu collector,the copper and lead are separated,the copper concentrate with copper grade 20. 13%,copper recovery 85. 09%,lead content 6. 02%,and the lead concentrate with lead grade 48. 56%,lead recovery 77. 35%,zinc content7. 54%,are obtained,respectively. The zinc content in lead concentrate is reduced to 7. 54% from 15%.