磨矿介质形状对铜硫浮选分离的影响  

Effect of grinding media shape on flotation separation of chalcopyrite and pyrite

作　　者：汪聪 邓建 肖庆飞[5] 孙伟[1,2,3] 徐世红 高志勇[1,2,3] WANG Cong;DENG Jian;XIAO Qingfei;SUN Wei;XU Shihong;GAO Zhiyong(School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China;Key Laboratory for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources of Hunan Province,Central South University,Changsha 410083,China;International Joint Research Center for Efficient and Clean Utilization of Critical Metal Mineral Resources of Hunan Province,Central South University,Changsha 410083,China;Institute of Multipurpose Utilization of Mineral Resources,Chinese Academy of Geological Sciences,Chengdu 610041,China;Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming,650093,China)

机构地区：[1]中南大学资源加工与生物工程学院,长沙410083 [2]中南大学战略含钙矿物资源清洁高效利用湖南省重点实验室,长沙410083 [3]中南大学湖南省关键金属矿产资源高效清洁利用国际联合研究中心,长沙410083 [4]中国地质调查局成都矿产综合利用研究所,成都610041 [5]昆明理工大学国土资源工程学院,昆明650093

出　　处：《中国有色金属学报》2024年第2期573-585,共13页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(52204301)。

摘　　要：本文系统研究了段介质和球介质对黄铜矿和黄铁矿磨矿及浮选过程的影响。单矿物、混合矿及实际矿浮选结果表明,段介质可以提高黄铜矿和黄铁矿的浮选回收率,促进铜硫浮选分离。磨矿实验、粒度分布和扫描电镜结果表明,段介质可产生更多尺寸均一、具有棱角且伸长率较高的颗粒,选择性研磨粗颗粒和黄铁矿,有效避免黄铜矿过磨。X射线衍射分析结果表明,段介质能使黄铜矿暴露更多(112)面,使黄铁矿暴露较多(200)面。捕收剂与黄铜矿(112)面的作用能较黄铁矿(200)面更高,因此,段介质可强化黄铜矿和黄铁矿颗粒间的可浮性差异,改善铜硫浮选分离效果。本研究对通过优化磨矿作业条件强化矿物浮选分离提供一定指导意义。In this paper,the effect of short cylinder and ball grinding media on the separation of chalcopyrite and pyrite was studied.The results of single,binary mixed and real ore mineral flotation indicate that the recovery and grade of chalcopyrite flotation are effectively promoted by using short cylinders.The results of grinding tests,particle size distribution and SEM reveal that short cylinders produce the angular and uniformly sized particles with larger values of elongation,which selectively grinding the coarse particle and pyrite,effectively avoiding the over-grinding of chalcopyrite.The results of XRD show that the short cylinders can expose more chalcopyrite(112)surfaces and some pyrite(200)surfaces.The adsorption energy between collectors and chalcopyrite(112)surfaces is higher than that of pyrite(200)surfaces.Thus,short cylinders can enhance the difference of floatability between chalcopyrite and pyrite particles and the separation efficiency of the two minerals.This study provides some guidance to enhance separation efficiency of minerals by optimizing the grinding process.

关 键 词：黄铜矿 黄铁矿 磨矿介质 浮选 表面性质 

分 类 号：TD921[矿业工程—选矿]