细晶石为主的钽铌矿石工艺矿物学及可选性研究  

Study on Process Mineralogy and Mineral Processing of Tantalum-niobium Ore Mainly as Microlite

作　　者：卢烁十[1] 陈经华[1] 

机构地区：[1]北京矿冶研究总院矿物加工科学与技术国家重点实验室,北京102628

出　　处：《有色金属（选矿部分）》2016年第5期1-6,12,共7页Nonferrous Metals（Mineral Processing Section）

摘　　要：矿石为钽、铌稀有金属矿石,并伴生有锂、铍、铷、铯等多种稀有金属。原矿品位为:Ta2O50.017%,Nb2O50.007 6%。钽、铌主要呈独立矿物细晶石的形式存在,其次以铌钽锰矿形式存在。确定了阶段磨矿、阶段分级摇床粗选—磁选脱除铁屑和强磁性矿物的钽、铌选矿工艺流程,获得了(Ta,Nb)2O5品位37.30%,钽铌总回收率43.31%的钽铌精矿,其中钽铌品位以及杂质含量均符合我国钽铌精矿质量标准的要求。The ore is a kind of tantalum（niobium）-bearing rare metal ore, and accompanied with various rare metals such as lithium, beryllium, rubidium, caesium and etc. The grade of Ta205 in this ore is 0. 017% ,and Nb205 is 0.007 6%. Tantalum and niobium mainly exist independently as microlite, and secondly as manganotapiolite. The mineral processing flowsheet ＂ stage grinding, stage classification followed by table concentrator roughing-removing scrap iron and strongly magnetic minerals by magnetic separation＂ was used, and the tantalum-niobium concentrate was obtained, in which the grade of （Ta,Nb）205is 37.30% with the total recoveries of tantalum and niobium were 43.31%. The grade and impurity contents of this tantalum-niobium concentrate accolxl with the quality standard of China.

关 键 词：细晶石 钽铌选矿 工艺矿物学 可选性研究 

分 类 号：TD912[矿业工程—选矿] TD913