纳米比亚罗辛铀矿放射性显明度研究  

Study on Radioactivity Visibility of Rossing Uranium Mine in Namibia

作　　者：田宇晖 刘志超[1] 师留印[1] 王桂硕 贾秀敏[1] 李广[1] TIAN Yuhui;LIU Zhichao;SHI Liuyin;WANG Guishuo;JIA Xiumin;LI Guang(Beijing Research Institute of Chemical Engineering and Metallurgy,CNNC,Beijing 101149,China)

机构地区：[1]核工业北京化工冶金研究院,北京101149

出　　处：《铀矿冶》2024年第2期24-30,共7页Uranium Mining and Metallurgy

基　　金：中核集团集中研发项目(A100-8)。

摘　　要：纳米比亚罗辛铀矿矿石品位低、矿山年处理量大,采出的矿石夹杂部分废石,磨矿和浸出成本较高。针对这一问题,研究了矿石粒度及铀品位分布规律,统计并计算了代表性矿样的放射性显明度,绘制了放射性可选性曲线。根据边界品位确定理论分选指标:当边界品位为0.01%时,原矿石铀品位为0.032%,精矿铀品位为0.047%,尾矿产率为33.95%,尾矿铀品位为0.0028%,总回收率为96.37%。结果表明,纳米比亚罗辛铀矿采用放射性选矿效果较好,矿石的可选性较高;放射性选矿主要适用于粗粒级、极低品位矿石抛尾。放射性显明度可作为罗辛铀矿放射性选矿的理论依据。The ore grade of the Rossing Uranium Mine in Namibia is low and the processing capacity is large.The mined ore is mixed with some waste rocks,and the grinding and leaching costs are high.To solve this problem,the distribution patterns of ore particle size and uranium grade were studied,the radioactivity visibility of representative ore samples was calculated,the radioactive selectivity curve was drawn,and the theoretical sorting index based on the cut-off grade was determined.The theoretical sorting indicators are:when the cut-off grade is 0.01%,the raw ore uranium grade is 0.032%,the concentrate uranium grade is 0.047%,the tailings yield is 33.95%,the tailings uranium grade is 0.0028%,and the total recovery rate is 96.37%.The results show that radioactive beneficiation has a certain effect and the ore selectivity is high.It is mainly suitable for tailing of coarse-grained and extremely low-grade ores.The radioactivity visibility can be used as the theoretical basis for radioactive beneficiation of Rossing Uranium Mine.

关 键 词：罗辛铀矿 放射性显明度 放射性选矿 铀矿石 铀品位 矿石粒度 

分 类 号：TD985[矿业工程—选矿] TD868[核科学技术—核燃料循环与材料] TL21