华阳川低品位铀多金属矿重选回收技术研究  

Study on Gravity Separation Recovery Technology of Huayangchuan Low Grade Uranium Polymetallic Ore

作　　者：刘志超[1] 李广[1] 李春风[1] 强录德 马嘉[1] 田宇晖 武翠莲[1] 唐宝彬[1] LIU Zhichao;LI Guang;LI Chunfeng;QIANG Lude;MA Jia;TIAN Yuhui;WU Cuilian;TANG Baobin(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》2021年第4期273-277,共5页Uranium Mining and Metallurgy

摘　　要：针对华阳川低品位铀多金属矿中有价金属品位低、生产成本高的问题,根据矿石矿物组成及性质,以铀为目标金属,兼顾其他有价元素,开展重选回收技术研究。矿石破碎后进行预先筛分,然后用棒磨机磨至-1.5 mm,采用螺旋溜槽进行预先抛尾,可以抛弃49.88%的尾矿;螺旋溜槽重选精矿再磨后分级,对+0.045 mm粒级的矿石采用摇床分选,对-0.045 mm的细泥采用尼尔森离心选矿机分选。研发的多金属矿重选回收技术可以抛弃82.28%的尾矿,实现了有价元素的初步富集,重选精矿中铀、铌、铅、铁的回收率分别为81.29%、82.83%、81.33%、71.89%,精矿铀品位为原矿铀品位的4.59倍。Aiming at the problems of low grade of valuable metals and high production cost in Huayangchuan low grade uranium polymetallic ore,the gravity separation recovery technology was studied based on the composition and properties of ore minerals,taking uranium as the target metal and considering the recovery of other valuable elements.After crushing,the ore is prescreened,and then ground to-1.5 mm by rod mill.The spiral chute is used for pre tailing,and 49.88%of the tailings can be discarded.After regrinding of gravity concentrate in spiral chute,the+0.045 mm ore is separated by shaking table,and the-0.045 mm fine mud is separated by Nielsen centrifugal concentrator.The recovery rate of uranium,niobium,lead and iron in gravity concentrate is 81.29%,82.83%,82.33%and 71.89%respectively,and the uranium grade is 4.59 times that of raw ore.

关 键 词：铀多金属矿 预先筛分 分级 重选 抛尾 分离富集 

分 类 号：TD95[矿业工程—选矿]