大冶铜绿山坑采难选矿石选铜试验研究

Experimental Study on Copper Separation from Refractory Ore of Lushankeng Open-Pit Mine of Daye Non-Ferrous Metal Co.

为改善大冶铜绿山坑采难选矿石的选铜指标,进行了较详细的实验室浮选试验。结果表明:混合捕收剂有利于提高铜的回收率;添加调整剂SB-1可较好地解决云母类脉石对铜浮选的的干扰问题;将异丁黄药与丁铵黑约按2∶1比例混合作为混合捕收剂,采用添加SB-1的中矿再磨闭路流程.可获得精矿铜品位20.51%、铜回收率93.37%、金品位12.48g/t、金回收率73.60%的较好选铜指标。

In order to improve the copper beneficiation performance of the refractory ore from Daye Co. ＇s Tonglushan Open-Pit Mine, detailed laboratory flotation test was made. The results show that mixed collector can be beneficial to the improvement of copper recovery, addition of SB-1 regulator can well solve the interference of mica type gangues to the copper flotation. The application of the collector mixed by isobutyl xanthate and butylammonium aerofloat in 2：1 ratio and SB- 1 in the flowsheet including closed-circuit middling regrinding obtained rather good copper separation indexes, The concentrate has a copper grade of 20, 51% , copper recovery of 93.37% , gold grade of 12, 48 g/t and gold recovery of 73.60%.