某难处理铀矿石二段逆流浸出工艺研究  

Experimental Research on a Refractory Uranium Ore by Agitation Leaching and Two Countercurrent Leaching Stages

作　　者：刘忠臣[1] 段忠武 刘会武[1] 黄永[1] 陈天宝[1] 向秋林[1] LIU Zhong-chen;DUN Zhong-wu;LIU Hui-wu;HUANG Yong;CHEN Tian bao;XIANG Qiu-lin(Beijing Research Institute of Chcrnical Enginccring and Mctallurgy, CNNC, Beijing;Xi＇an Lantian Uranium Co., Ltd., CNNC, Xi＇an 710500, China)

机构地区：[1]核工业北京化工冶金研究院,北京101149 [2]西安中核蓝天铀业有限公司,西安710500

出　　处：《铀矿冶》2018年第2期84-87,共4页Uranium Mining and Metallurgy

摘　　要：针对某难处理铀矿石开展了酸法搅拌浸出条件试验,提出了二段逆流浸出工艺流程。经小型试验和工业试验验证,该工艺不仅可使浸出硫酸用量由单段浸出的12%(与矿石质量比)降至11%,还可提高铀浸出率约2%。二段逆流平均渣计铀浸出率为92.5%。Acid agitation conditional leaching test was carried out to extract uranium from a refractory uranium ore.Two leaching stage with a countercurrent solution flow process was developed.The technology process has been verified by small and industrial tests.The results show that sulfuric acid dosage by two agitation leaching stages with a countercurrent solution flow process was reduced to 11% from 12%,and uranium leaching efficiency was increased 2%.The average leaching efficiency is 92.5% by sludge calculation.

关 键 词：铀矿石 酸法搅拌 二段逆流浸出 

分 类 号：TL212.12[核科学技术—核燃料循环与材料]