玄武岩型难选氧化铜矿浮选-浸出联合工艺

Study on the Combined Flotation and Leaching Process of a Basalt Type Refractory Oxide Copper Ore

采用浮选-浸出工艺处理含铜0.94%的玄武岩型氧化铜矿,该铜矿物氧化率高,嵌布粒度较细,属于低品位难选氧化铜。通过硫化浮选法回收部分氧化铜矿及硫化铜矿,可得到品位为16.2%,回收率为50.7%的浮选铜精矿,通过硫酸浸出法回收浮选尾矿中的细粒级铜矿物,浸出率达87%,此浮选-浸出工艺实现了铜矿物的有效回收。

The basalt oxide copper ore containing 0.94%of copper was treated by floatation-leaching process.The copper ore belongs to the low-grade refractory copper oxide with high oxidation rate and fine dissemination particle size.The copper concentrate with a grade of 16.2%and a recovery of 50.7%can be obtained by sulfur flotation method to recover part of copper oxide and copper sulfide.The fine copper minerals from flotation tailings can be recovered by sulfuric acid leaching method with a leaching rate of 87%.This floatation-leaching process has realized the effective recovery of copper minerals.