河南某地花岗伟晶岩型铌钽等稀有金属赋存状态研究  

Study on Occurrence States of Rare Metal Elements in a Granite Pegmatite Pattern Niobium-Tantalum Ore in Henan

作　　者：周晶 周姣花[1] 徐畅[3] 牛睿[1] 张金矿[1] 王真[1] 桂博艺 Zhou Jing;Zhou Jiaohua;Xu Chang;Niu Rui;Zhang Jinkuang;Wang Zhen;Gui Boyi(Henan Province Rock&Minerals Testing Center,Zhengzhou,Henan,China;School of Earth Sciences and Engineering Xi’an Shiyou University,Xi’an,Shaanxi,China;School of Earth Science,China University of Geoscience(Wuhan),Wuhan,Hubei,China;Key Laboratory of Rare Mineral,Ministry of Land and Resources,Wuhan,Hubei,China)

机构地区：[1]河南省岩石矿物测试中心,河南郑州450000 [2]西安石油大学地球科学与工程学院,陕西西安710000 [3]中国地质大学(武汉)地球科学学院,湖北武汉430074 [4]国土资源部稀土稀有稀散矿产重点实验室,湖北武汉430000

出　　处：《矿产综合利用》2023年第5期86-92,共7页Multipurpose Utilization of Mineral Resources

基　　金：国土资源部稀土稀有稀散矿产重点实验室开放基金项目(KLRM-KF201908)。

摘　　要：稀有金属元素赋存状态研究可为稀有金属矿产勘察、矿物加工和冶金工艺方法的选择提供基础资料和理论依据。本文以河南某地花岗伟晶岩岩型铌钽矿石为研究对象,综合利用化学分析、X-射线衍射、光学显微镜、扫描电镜及能谱等测试方法,对矿石中稀有金属元素的赋存状态进行了研究。结果表明:铌、钽主要以独立矿物铌钽锰矿-钽铌锰矿、细晶石形式存在,很少量以类质同象形式赋存在锡石中;铍主要以独立矿物绿柱石形式存在。可回收的矿物为铌钽锰矿、钽铌锰矿、细晶石和绿柱石。此矿床铌钽品位低、赋存状态较复杂,建议采用重选、强磁选、摇床等联合选矿工艺回收铌钽。Study on occurrence states of rare metal elements provides basic date and theoretical basis for prospecting,processing and selecting metallurgical process of the rare metal ore.In this paper,niobium-tantalum ore from a granite-pegmatite in Henan Province was analyzed by means of chemical analysis,X-ray diffraction analysis,polarization optical microscope,scanning electron microscopy and energy dispersive spectroscopy,the occurrence states of rare metal elements was discussed.The results showed that niobium and tantalum occur in niobium-tantalum minerals and microlite,mainly exist as independent minerals.In addition,a small quantity of niobium and tantalum occurs in cassiterite and exists as isomorphism.Beryllium occurs in beryl and exists as independent mineral.The recoverable minerals are niobium-tantalum minerals,microlite and beryl.In this deposit,niobium and tantalum are of low grade and complex occurrence state,so it is suggested to recycle niobium and tantalum by gravity separation,strong magnetic separation and shaking table.

关 键 词：稀有金属 赋存状态 花岗伟晶岩 铌钽矿物 

分 类 号：TD983[矿业工程—选矿]