{"title":"Spatiotemporal evolutionary patterns of mineral dissolution and precipitation (formation) amount in acid in situ leaching of uranium","authors":"Xuefeng Liu, Jinhui Liu, Yongguo Xing, Yihan Yang, Ruyi Wang, Ting He","doi":"10.1007/s10967-025-10005-5","DOIUrl":null,"url":null,"abstract":"<div><p>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.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"334 4","pages":"2949 - 2962"},"PeriodicalIF":1.5000,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10967-025-10005-5.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Radioanalytical and Nuclear Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10967-025-10005-5","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 0
Abstract
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.
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.
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