锡石多金属硫化矿工艺矿物学及磨矿优化  

Process mineralogy and grinding optimization of cassiterite polymetallic sulphide ore

作　　者：周文涛 韩跃新[1] 李艳军[1] 孙永升[1] 杨金林 马少健 ZHOU Wentao;HAN Yuexin;LI Yanjun;SUN Yongsheng;YANG Jinlin;MA Shaojian(College of Resources & Civil Engineering,Northeastern University,Shenyang 110819,China;College of Resources,Environment and Materials,Guangxi University,Nanning 530004,China)

机构地区：[1]东北大学资源与土木工程学院,辽宁沈阳110819 [2]广西大学资源环境与材料学院,广西南宁530004

出　　处：《中南大学学报（自然科学版）》2019年第6期1271-1277,共7页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(51741401,51264001,51874105);973计划前期研究专项(2014CB460606)~~

摘　　要：采用多种检测手段研究锡石多金属硫化矿化学和矿物组成、矿物产出特征及粒度组成,研究锡石过磨和硫化矿欠磨机理,并基于磨矿特性及优化表征方法开展磨矿试验,在此基础上,提出磨矿优化表征方法和“分步磨矿”的概念。研究结果表明:矿石中有用矿物为磁黄铁矿、闪锌矿、脆硫锑铅矿和锡石,脉石矿物主要为云母和石英;锡石与石英、云母等脉石紧密连生形成集合体,各种硫化矿物关系密切,相互混杂以交生或共生的浸染状细粒产出。以合格粒级金属分布率为目标,磨矿最优条件如下:入磨粒级小于2mm、矿浆质量分数为65%、磨矿时间为4min时提Sn,然后,不改变其他磨矿条件,继续磨矿至6min时入选硫化矿物。The chemical composition,mineral composition,mineral dissemination characteristics and particle size composition of cassiterite polymetallic sulfide ore were studied by means of multi-test methods,and the mechanism of cassiterite overgrinding and sulfide ore undergrinding was explored,and grinding experiments were carried out based on grinding characteristics and optimization characterization methods.On this basis,the optimization characterization method and the concept of "step grinding" for cassiterite polymetallic sulphide ore were put forward.The results show that the main components of the cassiterite polymetallic sulfide ore are pyrrhotite,sphalerite,brittle antimony lead ores and cassiterite,and gangue minerals are mainly mica and quartz,and cassiterite is closely linked with quartz,mica and other ganglion,and a variety of sulphide minerals are closely related and intermingled with intergrowth or symbiotic in the form of disseminated fine-grained particles.Taking the qualified particle size metal distribution rate as the target,the optimization conditions can be obtained by controlling the grinding conditions.When the grinding concentration is 65% and the input particle size is less than 2 mm,the grinding time is 4 min,the Sn metal is firstly selected,and no other grinding conditions need to be changed,and then after for 6 min,the sulfide minerals are secondly selected.

关 键 词：锡石多金属硫化矿 工艺矿物学 过磨 欠磨 优化表征 

分 类 号：TD921[矿业工程—选矿]