利用扫描电镜、X射线能谱分析、XRD、MLA矿物检测软件对四川盐源混合铜矿的物质组成、赋存状态、嵌布特性、粒度特征、解离特征进行了研究。结果表明，该矿石中的主要有价金属是铜，含量为1.05%，主要赋存于黄铜矿、斑铜矿、辉铜矿、孔雀石中，脉石矿物主要有石英和长石，其次为方解石、绿泥石；主要矿物的粒度均小于20 μm，其中-9.6 μm粒级的金属含量为0.3%，矿物单体解离度差；主要的铜矿物与脉石矿物共生紧密，仅仅利用常规手段难以达到良好的经济指标。基于上述工艺矿物学研究结果，采用一粗两精两扫的强化浮选流程、集中处理部分中矿的方案进行闭路试验，获得铜精矿铜品位达19.12%，回收率达79.16%。
Scanning electron microscope, X-ray spectroscopy,XRD, MLA mineral detection software were used to study the material composition, modes of occurrence, embedded properties, particle size and dissociation characteristics of a copper mine. The results show that the main valuable metal in the ore is copper, possessing 1.05%, which mainly occurs in chalcopyrite, bornite, chalcocit and malachite. The gangue minerals mainly include quartz and feldspar, followed by calcite and chlorite. The grain size of the main minerals is less than 20 μm, and the metal content of -9.6 μm is 0.3%. The degree of liberation is low. Moreover, the main copper minerals have close association with gangue minerals, reaching more than 40%. It is difficult to achieve a good economic index only by flotation. Based on the results of process mineralogy research, the authors adopted one roughing process- two cleaning processes- two scavenging flotation intensification processes to carry out closed-circuit test for part of the scheme of centralized treatment of middle ore. The copper grade and recovery of copper concentrate are 19.12% and 79.16%.