Study on precipitation and plugging mechanism in CO2 + O2 in-situ leaching of uranium in Nalinggou uranium deposit

IF 1.5 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-09-19 DOI:10.1007/s10967-024-09693-2

Ting Chen, Jinhui Liu, Yihan Yang, Jianjun Zhang, Qi Xu, Liping Zhu

引用次数: 0

Abstract

In this paper, PHREEQC software was used to calculate the saturation index of insoluble minerals, the pH boundary values of precipitated CaCO₃, and the boundary values of Ca²⁺ and HCO₃⁻ concentrations in relation to the uranium extraction process and the chemical composition of leaching in the Nalinggou uranium deposit. Based on the comparative analysis results of the mineral composition and chemical composition of the primary rock and the blockage, the formation of the blockage containing the mineral layer is mainly related to the pH-value and the corresponding ion concentration of the leaching solution, the sediment can be effectively avoided in the boundary value range.

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那岭沟铀矿床 CO2 + O2 原地浸出铀过程中的沉淀和堵塞机理研究

本文利用PHREEQC软件计算了不溶性矿物饱和度指数、沉淀CaCO3的pH边界值、Ca2+和HCO3-浓度边界值与那岭沟铀矿床铀提取过程及浸出化学成分的关系。根据原岩矿物组成和化学成分与堵塞物的对比分析结果，含矿层堵塞物的形成主要与浸出液的 pH 值及相应的离子浓度有关，沉积物在边界值范围内可有效避免。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.