硫化矿浮选粗精矿再磨工艺对矿物表面性质的影响  

A review on the effects of regrinding process on surface properties of minerals during the regrinding of coarse flotation concentrates of sulfide ores

作　　者：杨波 童雄 谢贤[2,3,4] 黄凌云 王晓[1,2] YANG Bo;TONG Xiong;XIE Xian;HUANG Ling-yun;WANG Xiao(Kunming University,Kunming 650214,China;National&Local Joint Engineering Research Center for the Green and Comprehensive Utilization of Metallic Tailings Resource,Kunming 650093,China;State key Laboratory of Complex Nonferrous Metal Resource Clean Utilization,Kunming 650093,China;Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明学院,云南昆明650214 [2]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 [3]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 [4]昆明理工大学国土资源工程学院,云南昆明650093

出　　处：《矿物学报》2021年第3期294-300,共7页Acta Mineralogica Sinica

基　　金：云南省地方本科高校基础研究联合专项面上项目(编号:2019FH001(-091));省部共建复杂有色金属资源清洁利用国家重点实验室开放课题基金项目(编号:CNMRCUKF1902)。

摘　　要：随着矿产资源开发利用程度的逐年加剧,目前大部分有色金属选厂处理的都是品位低、嵌布粒度细的复杂多金属矿,为提高有价金属的选矿回收率、降低磨矿成本,大部分选厂都采用"阶段磨矿、阶段选别"工艺,其中以浮选粗精矿的再磨最为常见。硫化矿浮选粗精矿的再磨可显著提高磨矿效率及目的矿物解离度,但生产实践中大部分选厂仅关注目的矿物的解离度,而忽视了硫化矿浮选粗精矿再磨过程中磨矿介质、磨矿方式、矿浆电化学环境等多种因素对矿物表面性质及浮选行为的影响。文章系统总结了硫化矿浮选粗精矿矿物组成特点及矿浆化学性质的基础上,综述了硫化矿浮选粗精矿再磨过程中磨机类型及磨矿方式、磨矿介质材质及形状、矿浆电化学环境、药剂浓度等多种因素对再磨后矿物表面性质及浮选行为的影响规律,指出通过精矿再磨工艺参数及矿浆电化学环境的合理优化调整,增强矿物表面间的亲水/疏水性差异,提高精选分离效果应是未来硫化矿浮选粗精矿再磨研究关注的重要方向。With the increasing development and utilization of mineral resources year by year, the complex and polymetallic ores with characteristics of low grades and fine dissemination particles have become the mainly processed raw ore materials for the most of mineral processing plants. In order to improve the recovery of valuable metals from these complex ores and to reduce their grinding costs, the process named as the staged grinding and staged separation was employed in the most of mineral processing plants. The regrinding of coarse flotation concentrates is the most commonly applied technique for the selective flotation of complex sulfide ores, as the liberation degree of valuable minerals and grinding efficiency can be obviously enhanced by using the regrinding method. However, in the industrial practice of most processing plants, the liberation degree of valuable minerals was only paid attention to, whereas the effects of regrinding medium, regrinding methods and pulp electrochemical environment on surface properties and flotation behaviors of minerals were usually neglected. In this paper, on the basis of the systematic summary of characteristic of mineral components of coarse concentrates from the floatation of sulfide ores and chemical property of the pulp, we have reviewed the effect regularity of mill type, regrinding mode, grinding medium property and shape, electrochemical environment of pulp, and reagent concentration on the surface properties and flotation behaviors of regrinding minerals during the regrinding process of flotation coarse concentrates of sulfide ores, and suggested that the reasonable optimization and adjustment of the concentrate regrinding process parameters and pulp electrochemical environment, the enhancement of hydrophilic/hydrophobic differences among mineral surfaces, and the improvement of flotation separation effect will be important directions, which should be paid attention to, for researches on the regrinding process of flotation coarse concentrates of sulfide ores in the future

关 键 词：混浮精矿 精矿再磨 磨矿介质 矿浆电化学环境 

分 类 号：TD92[矿业工程—选矿]