提高江西某高硫铜矿铜回收率试验

Experiment on Improving Copper Recovery of a High-sulfur Copper Mine from Jiangxi

江西某高硫铜矿山逐步转向地下开采,矿石性质变化较大,现场工艺流程难以适应入选矿石性质的变化,导致铜回收率下降。针对这种情况,在现场工艺流程保持相对稳定的情况下,进行了新型高效捕收剂PLQ-4应用及中矿再磨再选系统优化改造研究。研究表明,采用PLQ-4部分替代丁基黄药,将更多中矿直接给入再磨系统,减少未解离铜矿物在流程中的循环,最终可取得铜品位为22.75%、回收率为83.85%的铜精矿,与模拟现场工艺技术条件下的实验室指标相比,在精矿铜品位相当的情况下,铜回收率提高了2.82个百分点。

A high-sulfur copper mine in Jiangxi gradually shift to underground mining,as the ore properties has changed greatly,on-site process is difficult to adapt to the changes in the nature of selected ore,resulting in decreased copper recovery rate.In view of this situation,with the overall pattern of process remains relatively stable,then study on the application of new efficient collecting agent PLQ-4,also optimize and transform middlings regrinding reselecting system.The results show that using PLQ-4 substitute parts of butyl xanthate,add more middlings directly to the regrinding system,reduce the unsolved eventually get away from the unnecessary cycle of copper minerals in the process,eventually obtain a copper concentrate grade of 22.75%,copper recovery rate of 83.85%,Compared with the laboratory parameters in the simulation under technology conditions of the site,with equal copper concentrate grade,the copper recovery rate improved by 2.82.