某混合铜矿选矿试验研究

四川某铜矿含Cu0.77%，Ag8.2g/t，铜矿物以辉铜矿等硫化铜为主，氧化铜矿物主要为孔雀石，氧化率为16.88%，其中结合氧化铜占10.39%，属于低品位混合铜矿。针对矿石性质，确定了优先浮选硫化矿再浮选氧化矿的浮选工艺。在适宜的磨矿细度和药剂制度下，采用一段磨矿，两次粗选，一次精选，一次扫选的闭路试验流程，最终取得了铜精矿品位为25.76%，回收率为85.74%，含Ag258.21g/t的指标。 

Experimental research on the beneficiation technology for a mixed copper ore

The grade of Cu taken from Sichuan mixed copper ore is 0.77%, Ag8.2g/t, copper minerals mainly contain copper sulfide, such as chalcocite and so on, copper oxide minerals is mainly malachites, the oxidation rate of the copper is 16.88%, the combined copper oxide accounts for 10.39%, and the mixed copper ore is a low grade. According to the characteristics of the ore, the article conducts the copper sulfide flotation firstly, and then conducts the copper oxide flotation. Under the conditions of appropriate grinding and reagent system, the technical flowsheet of the closed-circuit tests is a period of grinding, twice roughing, once cleaning, and once scavenging. A copper concentrate containing Cu 25.76% with recovery rate of 85.74% including Ag 258.21g/t can be finally obtained.