Results 11 to 20 of about 14,611 (161)

Stochastic modeling of in-situ sandstone-type uranium leaching in response to uncertain and heterogeneous hydraulic conductivity

Shuiwen dizhi gongcheng dizhi, 2023
Hydraulic conductivity in sandstone-type uranium-bearing formations is of high heterogeneity. However, restricted by the means of test and analysis, it is difficult to accurately describe the heterogeneous coefficient of permeability, which results in ...
Mengdi CHEN, Zhenjiao JIANG, Chenchen HUO   +2 more
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Geochemical reactions altering the mineralogical and multiscale pore characteristics of uranium-bearing reservoirs during CO2 + O2in situ leaching

Frontiers in Earth Science, 2023
CO2 + O2in situ leaching has been extensively applied in uranium recovery in sandstone-type uranium deposits of China. The geochemical processes impact and constrain the leaching reaction and leaching solution migration; thus, it is necessary to study ...
Xingyu Zhou, Xingyu Zhou, Xingyu Zhou, Wei Wang, Wei Wang, Wei Wang, Qinghe Niu, Qinghe Niu, Qinghe Niu, Qizhi Wang, Qizhi Wang, Xuebin Su, Genmao Zhou, Lixin Zhao, Zhongmin Ji, Xiaofei Qi, Lanlan Tian, Jianhui Zhang, Jianhui Zhang, Jianhui Zhang, Beibei Sun, Beibei Sun, Beibei Sun   +22 more
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Research on the saturated/unsaturated seepage laws of ionic rare earth ore under different leaching conditions

Frontiers in Earth Science, 2023
The seepage law of the ionic rare earth leaching process plays an important role in the efficient development and utilization. The saturation permeation test of ionic rare earth under different leaching conditions was carried out using the variable head ...
Zhongqun Guo, Zhongqun Guo, Lingfeng Liu, Kefan Zhou, Xiaojun Wang, Wen Zhong   +5 more
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Prospects for selective-and-advanced recovery of rhenium from pregnant solutions of in-situ leaching of uranium ores at Dobrovolnoye deposit

Горные науки и технологии, 2021
Analysis of exploration materials and market conditions showed that by-product recovery of rhenium, one of the rarest strategic elements of the periodic system, was not always effective in processing the whole volume of pregnant uranium-bearing solutions.
A. A. Rudenko, I. D. Troshkina, V. V. Danileyko, O. S. Barabanov, F. Ya. Vatsura   +4 more
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Conception of in-situ fluidization mining for deep metal mines

矿业科学学报, 2021
With the depletion of shallow surface metal mineral resources, China's underground metal mining was gradually transferred to deep mining (>1 000 m).Because of the special mining conditions of high stress, great lifting depth, and high temperature in ...
Wu Aixiang, Wang Hongjiang, Yin Shenghua, Ruan Zhuen   +3 more
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RADIONUCLIDES DISTRIBUTION NEAR FORMER URANIUM MINING

Радиационная гигиена, 2017
The paper shows, that radionuclides from the stony rocks of uranium mines can be leached by atmospheric precipitations. In acid conditions, a degree of leaching is greater.Goal. The aim of this investigation was to study the distribution of radionuclides
D. A. Zaredinov, O. L. Ten, R. I. Radyuk, U. S. Salikhbaev, F. R. Usmanov, A. I. Boltaeva   +5 more
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MANAGING THE HORIZON-ORIENTED IN-SITU LEACHING FOR THE URANIUM DEPOSITS OF MONGOLIA

Rudarsko-geološko-naftni Zbornik, 2023
This paper summarizes the results of evaluating uranium in-situ leaching (ISL) parameters for hydrogenous deposits in eastern Mongolia. This method, also known as in-situ recovery (ISR) or solution mining was proposed for mining used to extract uranium ...
Oleh Khomenko, Dmytro Rudakov, Tsandgjav Lkhagva, Dariusz Sala, Valentyn Buketov, Roman Dychkovskyi   +5 more
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Optimization of groundwater contamination control in decommissioned acid in-situ leach uranium mines

Nuclear Engineering and Technology
Upon decommissioned acid in-situ leaching (ISL) uranium mining sites, contaminants (e.g. U(VI), SO42−) tend to migrate downstream under natural groundwater flow, posing significant risks to groundwater quality.
Genmao Zhou, Haixiao Zuo, Yong Chang, Yun Yang, Ting Zhu, Jianmin Chu, Yinquan Ding, Jianfeng Wu, Jichun Wu   +8 more
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Effect of Pyrite on the Leaching Kinetics of Pitchblende in the Process of Acid In Situ Leaching of Uranium

Minerals, 2022
In the process of acid in situ leaching of sandstone uranium ore, pyrite, which is a common associated mineral of pitchblende, would inevitably participate in the reaction. Therefore, it is important to study the influence of pyrite on the leaching kinetics of pitchblende.
Wang, Peng, Tan, Kaixuan, Li, Yongmei, Liu, Zhenzhong, Li, Chunguang, Tan, Wanyu, Tian, Yunting, Huang, Wuyang   +7 more
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Technical Advances and Techno-Economic Implications of CO₂-O₂ In Situ Leaching for Uranium Mining

Mining
Uranium is a resource with exceptionally high energy density, releasing substantially more energy per unit mass than conventional fossil fuels. In uranium mining, in situ leaching offers significant advantages over open-pit and underground mining ...
Guihe Li, Jun He, Jia Yao
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