期刊论文

中文

核技术

0253-3219

2022

45

12

33-39

10.11889/j.0253-3219.2022.hjs.45.120301

国家自然科学基金(No.1 1775107 )资助 第一作者：曾晟，男，1977年出生，201 1年于南华大学获博士学位，研究领域为原地浸出采铀，E-mail：usczengs@126.com 收稿日期：2022-08-02，修回日期：2022-10-06 Supported by National Natural Science Foundation of China (No.1 1775107 ) Firstauthor:ZENGSheng,male,bornin1977,graduatedfromUniversityofSouthChinawithadoctoraldegree,focusingonin-situleachingof uranium, E-mail: usczengs@126.com Received date: 2022-08-02, revised date: 2022-10-06

本校为第一机构

为了研究地浸采铀过程中矿物组成变化对孔隙堵塞的影响,以新疆某铀矿砂岩为例,借助灰色关联度理论分析了酸法浸出采铀过程中矿物组分变化对孔隙度与浸出铀浓度的影响。研究表明:1)浸出过程中孔隙堵塞的原因主要是由于多种矿物在物理化学作用下的结果,它会影响铀矿砂岩中其他矿物的溶质运移过程,从而对矿物组成与铀浸出产生影响;2)通过灰色关联分析发现孔隙堵塞对铀浸出的影响较大,硫酸钙与硅酸镁是对孔隙堵塞的主要原因,黏土矿物的物理吸附作用多表现在微孔方面,对大孔隙通道堵塞的影响要小于硅酸镁与硫酸钙。根据浸出过程中矿物组成变化规律与孔隙堵塞之间的关系,对地浸采铀工艺进行改进以解决...

[Background] In the process of in-situ leaching of uranium, pore blockage greatly limits the leaching efficiency of uranium, and the pore blockage is mainly due to the complex physical and chemical action of minerals and leaching agents in in-situ leaching of uranium. [Purpose] This study aims at the influence mechanism of each mineral composition on pore blockage under the action of leaching agent in the process of in-situ leaching of uranium to realize the efficient exploitation of uranium resources. [Methods] First of all, sandstones of uran...