从某低品位铀矿石中正浮选回收铌钛铀矿  

Enrichment of mendeleevite from a low grade hard rock uranium mine by positive flotation

作　　者：李松清 朱阳戈 崔拴芳 胡进平 崔强 郑桂兵 LI Song-qing;ZHU Yang-ge;CUI Shuan-fang;HU Jin-ping;CUI Qiang;ZHENG Gui-bing(State Key Laboratory of Mineral Processing, BGRIMM Technology Group, Beijing 102628, China;Sino Shaanxi Nuclear Industry Group, Xi'an 710100, China)

机构地区：[1]北京矿冶科技集团有限公司矿物加工科学与技术国家重点实验室,北京102628 [2]中陕核工业集团,西安710100

出　　处：《矿冶》2020年第1期22-26,共5页Mining And Metallurgy

摘　　要：某低品位铀矿石含铀155 g/t,经过重选抛尾、粗精矿磁选回收铁、铅银浮选后可获得铀品位为377 g/t的浮铀给矿。采用正浮选工艺对其中主要有用矿物——铌钛铀矿进行了回收,并综合回收了稀土矿物。结果表明,经过两次粗选、两次精选、一次扫选闭路试验流程可获得铀品位5465 g/t、二氧化铈品位5406 g/t,铀作业回收率89.04%、二氧化铈作业回收率69.29%的铀精矿。A low-grade uranium ore contains 155 g/t of uranium.Floating uranium for ore feeding with uranium grade of 377 g/t can be obtained after gravity separation and tailing,magnetic separation of coarse concentrate and flotation of iron and lead silver.The main useful mineral-mendeleevite was recovered by the positive flotation,and the rare earth minerals were comprehensively recovered.Uranium concentrates with U grade of 5465 g/t,CeO2 grade of 5406 g/t,U recovery of 89.04%and CeO2 recovery of 69.29%can be obtained by two-roughing,two-cleaning and one-scavenging closed-circuit test.

关 键 词：低品位铀矿 铌钛铀矿 正浮选 

分 类 号：TL212.1[核科学技术—核燃料循环与材料] TD923[矿业工程—选矿]