某低品位混合铜矿选矿试验研究

某低品位混合铜矿原矿含铜O．32％，其中氧化铜占50．73％，属品位低且氧化率较高的铜矿石。为了充分利用该部分铜矿资源，针对该混合铜矿矿石特点，采用优先浮选硫化铜再活化浮选氧化铜矿，分别通过-粗三精-扫流程工艺，进行了一系列条件试验，并根据条件试验所得的最佳工艺参数进行闭路试验，获得了铜精矿铜品位18．58％、回收率77．55％以及伴生金回收率70．67％的良好指标。该工艺流程和药剂制度简单合理，适用性强，易于实现工业化生产。

Study on the Beneficiation Tests of a Low Grade Mixed Copper Ore

The rude ore of a low grade mixed copper ore is a low grade and high oxidation rate copper ore, which with a grade of 0.32% and an oxygenation efficiency of 50.73% .To take full advantage of the partial copper resources and against the characteristics of mixed copper ore,the article conducted the copper sulfide flotation firstly, and then conducted activation and copper oxide flotation by the process of one roughing, three refining and one scavenging.A series of condition tests have been conducted,and the closed-circuit tests which based on the optimal parameters of condition tests can obtain the copper concentrate with a grade of 18.58%,recovery rate of 77.55% and associated gold recoveries of 70.67%.The flotation indexes are satisfactory.The technological process and reagent system are simple, adaptable and easy to realize commercial production.