内蒙古某钽铌稀有多金属矿综合利用试验研究  

Experimental Study on Comprehensive Utilization of a Tantalum-Niobium Rare and Polymetallic Ore in Inner Mongolia

作　　者：郝胜涛[1] 黄业豪 孙景敏[1] 张雨田[1] 李翠芬[1] HAO Shengtao;HUANG Yehao;SUN Jingmin;ZHANG Yutian;LI Cuifen(Henan Province Rock and Mineral Testing Center,Zhengzhou 450012,China;Henan Academy of Geology,Zhengzhou 450016,China)

机构地区：[1]河南省岩石矿物测试中心,郑州450012 [2]河南省地质研究院,郑州450016

出　　处：《有色金属（选矿部分）》2023年第4期29-37,共9页Nonferrous Metals（Mineral Processing Section）

基　　金：河南省2023年度科技攻关项目(232102320329);河南省地质研究院“揭榜挂帅”项目(2023-21-2)。

摘　　要：针对内蒙古某钽铌稀有多金属矿,采用光薄片鉴定、X-衍射分析、扫描电镜及能谱分析、电子探针分析等方法对其进行了详尽的工艺矿物学研究,查明了金属矿物主要为钽铌铁矿、锡石、细晶石等,非金属矿物主要为钠长石、石英和天河石。通过详细试验研究,确定采用“一段磨矿—强磁分选—分级摇床—摇精回收钽铌—酸洗除铁—摇尾回收锂铷云母—强磁尾矿综合回收长石云母”的选冶联合工艺,最终可获得(Ta,Nb)_(2)O_(5)品位为60.15%、回收率为21.70%的钽铌精矿1,(Ta,Nb)_(2)O_(5)品位为30.35%、回收率为3.17%的钽铌精矿2,Li_(2)O品位0.89%、回收率为58.98%的锂铷云母精矿1(Rb_(2)O品位0.34%、回收率为11.70%,云母含量为92%),Li_(2)O品位0.60%、回收率为5.59%的锂铷云母精矿2(Rb_(2)O品位0.28%、回收率为1.35%,云母含量为93%),Na_(2)O品位6.88%、回收率为77.95%、K_(2)O品位2.60%、回收率为68.30%的长石精矿,该长石精矿符合企业标准(QB/T 1636—1992)中的合格品等级。For a tantalum niobium rare polymetallic ore in Inner Mongolia,detailed process mineralogy research has been carried out by optical thin section microscopy,X-ray diffraction analysis,scanning electron microscopy,energy spectrum analysis,electron probe analysis and other methods,it was found that the metal minerals are mainly tantalum niobium iron ore.Through detailed experimental study,the combined beneficiation and metallurgy process of“primary grinding,strong magnetic separation,grading shaking table,recovery of tantalum and niobium from shaking table concentrate,acid washing to iron removal,recovery of lithium rubidium mica from shaking table tailings and recovery of feldspathic mica from strong magnetic tailings”has been determined,finally we obtained tantalum niobium concentrate 1with(Ta,Nb)_(2)O_(5)grade of 60.15%and recovery of 21.70%,tantalum niobium concentrate 2with(Ta,Nb)_(2)O_(5)grade of 30.35%and recovery of 3.17%.Lithium rubidium mica concentrate 1with Li_(2)O grade of 0.89%and recovery of 58.98%(Rb_(2)O grade of 0.34%,recovery of 11.70%and mica content of 92%),lithium rubidium mica concentrate 2with Li_(2)O grade of 0.60%and recovery of 5.59%(Rb_(2)O grade of 0.28%,recovery of 1.35%,mica content of 93%).Feldspar concentrate with Na_(2)O grade of 6.88%,recovery of 77.95%,K_(2)O grade of 2.60%,and recovery of 68.30%,the feldspar concentrate conforms to the qualified product grade in the enterprise standard(QB/T 1636—1992).

关 键 词：钽铌矿 云母 长石 稀有金属 

分 类 号：TD954[矿业工程—选矿]