白云鄂博矿床白云石型铌稀土矿石中稀土分布规律研究  

Distribution Regularity of Rare Earth in Dolomite Type Niobium Rare Earth Ore in Bayan Obo

作　　者：李强[1] 杨占峰[1] 魏威 王维维 郭春雷 金海龙 Li Qiang;Yang Zhanfeng;Wei Wei;Wang Weiwei;Guo Chunlei;Jin Hailong(Baotou Research Institute of Rare Earths Rare Earth Resources Research and the Comprehensive Utilization State Key Laboratory of Bayan Obo,Baotou 014030,China)

机构地区：[1]包头稀土研究院白云鄂博稀土资源研究与综合利用国家重点实验室,内蒙古包头014030

出　　处：《中国稀土学报》2021年第2期302-309,I0004,共9页Journal of the Chinese Society of Rare Earths

基　　金：白云鄂博稀土资源研究与综合利用国家重点实验室开放课题(2020Z2142);内蒙古自治区科技创新引导项目(KCBJ2018077)资助。

摘　　要：在详细地实地勘察和现场大量采样的基础上,经多元素分析、场发射扫描电子显微镜、X射线能谱仪以及矿物分析系统对白云鄂博主、东矿体的白云石型铌稀土矿石内稀土赋存状态展开研究,发现该类型矿石的稀土品位与配分存在一定的规律性差异,氟碳铈矿的REO含量普遍高于独居石,且氟碳铈矿较易俘获更多的La和Ce,而独居石对中重稀土元素的结合能力更强,Pr,Nd在两矿物间无明显的富集倾向性,依据稀土配分差异提出了主量稀土元素的最佳矿物原料,指出La,Ce为主(东)矿氟碳铈矿,Pr,Nd为主矿独居石与东矿氟碳铈矿。本实验研究内容对深入认识该矿床最主要的稀土矿石类型和探索精细化高效利用稀土资源具有一定的指导和参考意义。Based on the detailed field investigation and a large number of field samples,the distribution regularity of rare earth in dolomite type of main ore and east ore in Bayan Obo was systematically studied,via the multi element analysis,SEM-EDS and the automatic mineral analysis system,some differences in the grade and the distribution of the rare earth between bastnaesite and monazite were found.The REO content of bastnaesite is generally higher than that of monazite,and it is easier for bastnaesite to capture more La and Ce,monazite has stronger binding ability to medium heavy rare earth elements.There is no obvious enrichment tendency of Pr and Nd between the two minerals.we put forward the suggestion of fine production.The best mineral raw materials of La,Ce,Pr and Nd is the main(east)ore bastnaesite,main(east)ore bastnaesite,main ore monazite and east ore bastnaesite respectively.This study has certain guidance and reference significance for further understanding of the main types of rare earth ores in the deposit and exploration of fine and efficient utilization of rare earth resources.

关 键 词：白云鄂博 白云石型矿石 分布规律 稀土 

分 类 号：P618.7[天文地球—矿床学] P575.2[天文地球—地质学]