内蒙古芒来铀矿石酸法柱浸试验  

Acid Column Leaching Test of Manglai Uranium Ore in Inner Mongolia

作　　者：刘金辉[1] 刘昕瑀 阳奕汉 邢拥国 王如意 梁大业 闫学锐 吴怡娴 LIU Jinhui;LIU Xinyu;YANG Yihan;XING Yongguo;WANG Ruyi;LIANG Daye;YAN Xuerui;WU Yixian(School of Water Resources and Environmental Engineering,East China University of Technology,Nanchang 330013,China;China Nuclear Inner Mongolia Mining Co.,Ltd.,Hohhot 014000,China;China Uranium Industry Co.,Ltd.,Beijing 100013,China)

机构地区：[1]东华理工大学水资源与环境工程学院,江西南昌330013 [2]中核内蒙古矿业有限公司,内蒙古呼和浩特014000 [3]中国铀业有限公司,北京100013

出　　处：《东华理工大学学报（自然科学版）》2024年第2期185-192,共8页Journal of East China University of Technology(Natural Science)

基　　金：国家自然科学基金核技术创新联合基金项目“酸法地浸采铀中铀矿储层孔隙与渗透性时空演化规律”(U1967209)。

摘　　要：为获得溶浸液在不同硫酸质量浓度条件下的铀浸出特征及试验参数,探究内蒙古芒来铀矿床矿石酸法浸出的可行性,开展了不同硫酸质量浓度(5、10、15、20 g/L)的溶浸液下室内柱浸浸铀试验。试验结果表明,随着溶浸液硫酸质量浓度的增高,浸出液铀质量浓度及铀浸出率随之增高,浸出周期缩短,故酸法工艺适合该矿床铀浸出。试验后期浸出液流量降低与长石类矿物的黏土化蚀变有关。针对铀平均品位为8.8×10^(-5)的矿石,铀浸出率为49.80%~54.35%,从浸出率、防堵塞及浸铀成本等方面综合分析,认为质量浓度为10 g/L的硫酸溶浸液较适合该铀矿酸法地浸开采。In order to explore the feasibility of acid leaching of ore from Manglai uranium deposit in Inner Mongolia,and obtain the characteristics and test parameters of uranium leaching under different sulfuric acid mass concentrations(5,10,15 and 20 g/L),indoor column leaching tests of uranium were carried out.The test results show that the mass concentration of uranium and the leaching rate of uranium in leaching solution increase with the increase of sulfuric acid concentration,and the leaching period is shortened.The decrease of leaching fluid flow at the late stage of the experiment was related to clayification alteration of feldspar minerals.For the ore with an average uranium grade of 8.8×10^(-5),the uranium leaching rate is 49.80%~54.35%.It is considered that the mass concentration leaching solution of 10 g/L H 2SO 4 is suitable for the uranium acid leaching mining from the aspects of leaching rate,blockage prevention and uranium leaching cost.

关 键 词：砂岩型铀矿床 酸法浸出 柱浸试验 长石黏土化 芒来 

分 类 号：P641.43[天文地球—地质矿产勘探]