组合捕收剂强化回收普朗含泥微细粒硫化铜矿试验及机理分析  

Experiment and Mechanism Analysis of Enhanced Recycling Mud-containing Fine-grained Copper Sulfide Ore of Pulang by Combined Collectors

作　　者：张洋 崔毅琦[1,2,3] 蓝卓越 席欣月[1,3] 黄典强 童雄 王靖 ZHANG Yang;CUI Yiqi;LAN Zhuoyue;XI Xinyue;HUANG Dianqiang;TONG Xiong;WANG Jing(Faculty of Land and Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;State Key Laboratory of Clean Utilization of Complex Non-Ferrous Metal Resources,Kunming 650093,China;National and Local Joint Engineering Research Center for Green Comprehensive Utilization of Metal tailings Resources,Kunming 650093,China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]省部共建复杂有色金属资源清洁利用国家重点实验室,云南昆明650093 [3]金属矿尾矿资源绿色综合利用国家地方联合工程研究中心,云南昆明650093

出　　处：《矿产保护与利用》2023年第2期27-34,共8页Conservation and Utilization of Mineral Resources

基　　金：国家自然科学基金(5196040249);云南省重大科技项目(202202AG050010);云南省科技计划项目(202202AB080012)。

摘　　要：香格里拉普朗硫化铜矿石含泥量高、铜嵌布粒度细,现场采用烃类油捕收剂MCO,铜回收效果欠佳。因此在研究矿石性质的基础上,进行了捕收剂优化研究及机理分析。研究结果表明,原矿铜品位为0.396%,主要含铜矿物为黄铜矿,嵌布粒度细;脉石矿物主要为石英、绿泥石、斜长石等,泥化程度高。通过药剂优化试验,使用MCO+CO100+250-A为组合捕收剂(用量36+4.5+2.5 g/t),浮选闭路试验最终获得的铜精矿品位为23.41%,回收率为82.15%,与现场药剂效果相比,精矿Cu品位升高了0.19百分点,回收率增加了4.36百分点。单矿物浮选试验和机理研究结果表明,MCO与组合捕收剂在黄铜矿表面的吸附方式均为化学吸附,与MCO相比,组合捕收剂能显著降低药剂与矿物表面的静电斥力,显著提高药剂在黄铜矿表面的吸附强度。该组合捕收剂选择性高、捕收能力强,对含泥微细粒硫化铜矿具有较好的浮选效果。The optimization and the mechanism of collectors for the copper sulfide mine bearing fine copper minerals and mud in Pulang,Shangri-La were studied,because of the poor copper recovery using MCO as collector.The results of process mineralogy showed that the copper grade of the raw ore was 0.396%,in which the chalcopyrite was the main copper-bearing mineral and fine dissemination size.The main gangue minerals were quartz,chlorite,plagioclase,etc.The concentrate with a copper grade of 23.41%and a recovery of 82.15%was obtained from the flotation closed circuit test using the combined collector of MCO,CO100 and 250-A(dosage 36+4.5+2.5 g/t).Compared with MCO,the copper grade and the recovery were increased by 0.19%and 4.36%,respectively.The mechanism study results indicated that the adsorption mode of the combined collectors on chalcopyrite surface was chemical adsorption.The electrostatic repulsion force between the collector and chalcopyrite surface was reduced,therefore,the collector adsorption was significantly improved.Due to the higher selectivity and stronger collecting ability,the combined collector can recover fine copper sulfide minerals effectively.

关 键 词：组合捕收剂 浮选 微细粒铜 机理分析 

分 类 号：TD923.13[矿业工程—选矿] TD952.1