云南某难选氧化铜矿浮—磁联合选矿试验  

Flotation-magnetic Separation Combined Beneficiation Experiment on a Refractory Oxidized Copper Ore in Yunnan Province

作　　者：易运来[1] Yi Yunlai(Hunan Research Institute of Nonferrous Metal)

机构地区：[1]湖南有色金属研究院

出　　处：《现代矿业》2018年第9期16-19,26,共5页Modern Mining

摘　　要：为高效回收利用铜品位为1. 28%的云南某氧化铜矿,根据原矿高氧化率、高结合率、嵌布粒度细的特点及不同含铜矿物可浮性和磁性的差异,试验研究采用先浮硫化铜后浮氧化铜—浮选尾矿强磁选的原则工艺流程。试验结果表明:在磨矿细度为-0. 074 mm 84. 5%的条件下,进行硫化铜1粗1扫2精浮硫化铜矿,硫化铜浮选尾矿再进行1粗3扫3精浮氧化铜矿,浮选尾矿通过磁选综合回收铜工艺,最终获得的硫化铜精矿铜品位为24. 75%,铜回收率为33. 03%;获得的氧化铜精矿铜品位为16. 12%,回收率为39. 25%;获得的磁选精矿铜品位为9. 71%,铜回收率为12. 50%;总精矿铜品位为16. 77%,总铜回收率为84. 78%,获得了满意的试验指标。In order to efficiently recycle a oxidized copper ore with copper grade of 1.28 % in Yun- nan,according to the raw ore properties of high oxidation rate, high binding rate and fine disseminated size, dressing test was carried out by using first sulfur after oxygen flotation-flotation tailings strong mag- netic separation principle process flow. The results showed that under the condition of gTinding fineness -0. 074 mm 84. 5%,via one roughing-two cleaning-one scavenging copper sulfide flotation-copper sul- fide flotation tailings one roughing-three cleaning-three scavenging copper oxide flotation- flotation tailings magnetic separation comprehensive recover copper process flow, copper sulphide concentrate with copper grade of 24.75% ,recovery rate of 33.03% and copper oxide concentrate with copper grade of 16. 12% , recovery rate of 39.25% were obtained; copper grade of 9.71% and copper recovery rate of 12.50% were acquired;the copper grade and recovery rate of comprehensive concentrate were 16.77% ,84.87% respectively ,test indexes were satisfactory.

关 键 词：氧化铜 高氧化率 高结合率 浮一磁联合工艺 

分 类 号：TD952[矿业工程—选矿]