酸浸铀中矿物溶解与沉淀（形成）量的时空演化规律

IF 1.5 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2025-02-06 DOI:10.1007/s10967-025-10005-5

Xuefeng Liu, Jinhui Liu, Yongguo Xing, Yihan Yang, Ruyi Wang, Ting He

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引用次数: 0

摘要

在铀矿酸地浸出过程中，矿物溶解和沉淀影响了含矿层的渗透率，限制了铀矿的浸出效率。为了探索矿物溶解/沉淀，利用3口井对巴彦乌拉C12矿区的注抽通道进行了监测。收集了1年的浸出液成分，并使用PHREEQC进行模拟。核心分析验证了仿真结果。长石和少量铁矿物溶解，石膏和粘土矿物（伊利石、高岭石）沉淀。沿流动方向溶解减少，沉淀增加。石膏沉淀和长石蚀变是孔隙堵塞的主要原因。模拟结果与堆芯分析结果一致。

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Spatiotemporal evolutionary patterns of mineral dissolution and precipitation (formation) amount in acid in situ leaching of uranium

In the acid in-situ leaching process of uranium, mineral dissolution and precipitation affected ore-bearing layer permeability, limiting uranium extraction efficiency. To explore mineral dissolution/precipitation, an injection-pumping pathway in the Bayan Ula C12 mining area was monitored with three wells. Leaching solution composition was collected for 1 year and simulated using PHREEQC. Core analysis validated the simulation. Feldspar and minor iron minerals were dissolved, while gypsum and clay minerals (illite, kaolinite) precipitated. Dissolution decreased, and precipitation increased along the flow direction. Gypsum precipitation and feldspar alteration were identified as the primary causes of pore blockage. The simulation results were consistent with the core analysis.

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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.