某超贫铜多金属矿伴生铁选别提质增效实践

Quality Improvement of Associated Iron Ore In Ultra Lean Copper Polymetallic Deposit

超贫铜多金属矿是国内有色金属矿石资源的重要组成部分,该类型矿石因其自身原矿赋存品位特低、回收难度较大而出名,同时选别工艺指标要求较高、生产成本较高。根据有价回收金属嵌布粒度的不同,采用阶段磨矿阶段选别,实现综合回收。磁性铁回收是综合回收铜、钴、钼、铁、金、银六种金属金属中的一种,通过铁磁选工艺流程改造、设备更新、磨矿细度提高等措施,实现了复杂原矿回收铁精矿品位提提高5个百分点以上同时磁性铁回收率不降低、铁精矿含水率由20%降低到9%以下的目标,达到了提高铁选别技术指标同时提高生产效益的目的。

Ultra-lean copper polymetallic ore is an important part of non-ferrous metal ore resources in China. This type of ore is famous for its low grade of original ore and difficult recovery. At the same time,it requires high separation process index and high production cost. According to the different distribution size of valuable recovery metal, stage grinding is adopted, realizing comprehensive recovery. Magnetic iron recovery is one of the six metals of copper, cobalt, molybdenum, iron, gold and silver. By means of ferromagnetic separation process transformation, equipment renewal and grinding fineness improvement, the grade of iron concentrate recovered from complex raw ore can be increased by more than 5 %, the recovery rate of iron concentrate can not be reduced, and the water content of iron concentrate can be increased by.The target of reducing 20% to less than 9% has reached the goal of raising the technical index of high-speed railway separation and improving the production efficiency.