MLA在斑岩型锡石矿工艺矿物学研究中的应用  

Application of MLA in the Study of Technological Mineralogy of Porphyry Type Tin Ore

作　　者：李广[1,2] 肖琴 胡海祥[3] 苏妤芸 LI Guang;XIAO Qin;HU Haixiang;SU Yuyun(Zijin Mining Group Co.Ltd,Shanghang 364200,China;State Key Laboratory of Comprehensive Utilization of Low Grade Refractory Gold Ores(Zijin Mining group Co.Ltd.),Shanghang 364200,China;School of Applied Sciences,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]紫金矿业集团股份有限公司,福建上杭364200 [2]低品位难处理黄金资源综合利用国家重点实验室(紫金矿业),福建上杭364200 [3]江西理工大学应用科学学院,江西赣州341000

出　　处：《有色金属（选矿部分）》2019年第6期5-11,共7页Nonferrous Metals（Mineral Processing Section）

基　　金：国家自然科学基金项目（51564013）;江西省自然科学基金项目（20161BAB206139）;江西省教育厅科技计划项目（GJJ181500）;国家留学基金资助项目（201708360149）;江西理工大学清江青年英才支持计划资助项目（JXUSTQJYX2017008）

摘　　要：某斑岩型锡矿有价矿物以锡为主,伴有少量钼、铋、钨等有价元素,其锡石嵌布粒度细微,呈细粒星散状浸染嵌布于脉石矿物中,属极难选矿石,生产工艺流程锡回收率较低。经磨矿、粒级选别等多条件试验,最终推荐浮选-分质分流分选重选工艺。利用矿物自动分析系统(MLA),结合X射线荧光光谱仪对原矿、锡精矿Ⅰ、锡精矿Ⅱ和尾矿进行工艺矿物学研究,查明矿物组成、嵌布粒度、解离度、连生及包裹关系,研究结论为浮选-分质分流分选重选优化提供重要参考及技术支撑。The valuable minerals of porphyry tin ore are mainly cassiterite and a small amount of other valuable elements such as molybdenum,bismuth,tungsten and copper.Due to the fine grain size of cassiterite,it is disseminated and embedded in gangue minerals,it is extremely difficult to recover cassiterite and the recovery rate in the production process is low.The flotation-Segregation-shunt-Select gravity concentration of beneficiation processes is finally recommended through the test of grinding and grained separation.To find out the mineral composition,disseminated grain size,association and encasement relationship,it is researched on technological mineralogy of raw ore,tin concentrate Ⅰ,tin concentrateⅡand tailing by using the Mineral Liberation Analyzer(MLA)and X-ray.The results show that the cassiterites in raw ore are mainly fine imbedded in gangue minerals,and the cassiterite size is fine.It provides basis for the optimization and technical support of flotation-segregation-shunt-Select gravity concentration of beneficiation processes.

关 键 词：斑岩型锡矿 工艺矿物学 矿物自动分析系统(MLA) 解离度 分质分流分选 

分 类 号：TD91[矿业工程—选矿] TD952