摘要
针对某独居石优溶渣,研究了采用一段常规浸出—二段逆流浸出工艺浸出铀、钍、稀土。考察了各因素对浸出效果的影响。结果表明:采用一段常规浸出法时,适宜条件下的铀、钍、稀土浸出率分别为98.66%、95.37%、64.23%;采用二段逆流浸出法时,铀、钍、稀土浸出率均可提高0.5%~1.0%,浸出液余酸降低50%以上,矿浆固液分离性能得到了一定改善。
Leaching of uranium,thorium and rare earth from the monazite selective solution residue were studied by conventional leaching—two-stage countercurrent leaching was studied.The effects of various factors on the leaching was investigated.The results show that the leaching rates of uranium,thorium and rare earth are 98.66%,95.37% and 64.23%,respectively under suitable conditions using conventional leaching method.Using the two-stage countercurrent leaching method,the leaching rates of uranium,thorium and rare earth can be increased by 0.5%~1.0%,the residual acid of the leaching solution can be reduced by more than 50%,and the solid-liquid separation performance of the slurry can be improved to a certain extent.
作者
程浩
苏学斌
刘康
刘忠臣
王桂硕
梁耕宇
张承天
黄永
刘会武
向秋林
CHENG Hao;SU Xuebin;LIU Kang;LIU Zhongchen;WANG Guishuo;LIANG Gengyu;ZHANG Chengtian;HUANG Yong;LIU Huiwu;XIANG Qiulin(Beijing Research Institute of Chemical Engineering Metallurge,CNNC,Beijing 101149,China;China National Uranium Co.,Ltd.,CNNC,Beijing 100013,China)
出处
《湿法冶金》
CAS
北大核心
2024年第4期395-400,共6页
Hydrometallurgy of China
基金
国家重点研发计划项目(2019YFC1907702)
中国核工业集团有限公司核心能力提升项目(中核科发[2021]-144号)
中国核工业集团有限公司基础研究项目(中核科发[2022]-440号)。
关键词
独居石优溶渣
常规浸出
二段逆流浸出
铀
钍
稀土
固液分离
monazite selective solution residue
conventional leaching
two-stage countercurrent leaching
uranium
thorium
rare earth
solid-liquid separation
