硫化矿磨矿体系的物理和化学作用及其对浮选工艺的影响  

Physical and Chemical Effects of Sulfide Minerals Grinding System and Their Influence on Flotation Process

作　　者：李青柯 巫焱明 顾帼华[1] 王艳红 LI Qingke;WU Yanming;GU Guohua;WANG Yanhong(School of Minerals Processing and Bioengineering,Central South University,Changsha 410083,China;Zijin Mining Group Co.,Ltd.,Shanghang 364200,China)

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083 [2]紫金矿业集团股份有限公司,福建上杭364200

出　　处：《金属矿山》2024年第1期251-260,共10页Metal Mine

基　　金：国家自然科学基金项目(编号:52074358);“十四五”国家重点研发计划政府间国际科技创新合作重点专项(编号:2021YFE0106800)。

摘　　要：在硫化矿物的磨矿过程中,发生的一系列复杂的物理和化学作用对后续矿物选别至关重要。首先,对硫化矿磨矿体系中磨矿介质、矿石参与的物理和化学作用进行了总结。着重讨论了磨矿设备、介质性质、工艺参数、气体和溶液环境等对磨矿物理粉碎作用、机械力化学作用、电化学作用等的影响,包括改变矿石粒度分布、晶体结构、表面性质等磨矿产品颗粒性质,以及矿浆p H、溶解氧、电位、离子浓度等矿浆化学性质以及硫化矿物浮选行为。其中,产品颗粒性质和矿浆化学性质的变化是影响后续矿物浮选分离效率的主要因素,由此提出,从磨矿开始就有目的地为后续浮选过程创造良好的颗粒表面物理化学性质和矿浆化学环境,是实现硫化矿物高效分选的关键因素。During grinding processing of sulfide minerals,a series of complex physical and chemical actions that are cru-cial to subsequent mineral processing.Firstly,the physical and chemical effects of grinding media and minerals involved in the sulfide ore grinding system are summarized.On this basis,the influence of grinding conditions such as grinding equipment,me-dium properties,process parameters and environment on the physical comminution,mechanochemical action and electrochemi-cal action of grinding are discussed,including changing particle size distribution,crystal structure and surface properties of grinding products,pulp chemical properties such as pH,dissolved oxygen,potential and ion concentration,as well as mineral flotation.Among them,the changes of mineral properties and pulp chemical properties are the main factors that affect the subse-quent mineral flotation.Therefore,the grinding system should purposefully create good particle surface physical and chemical properties and pulp chemical environment for the subsequent flotation process,which is the key factor to achieve efficient sepa-ration of sulfide minerals.

关 键 词：磨矿 硫化矿 电化学 机械力化学 浮选 

分 类 号：TD952[矿业工程—选矿] TD921TD923