Results 11 to 20 of about 14,710 (250)

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
doaj   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

Geochemical and S isotopic studies of pollutant evolution in groundwater after acid in situ leaching in a uranium mine area in Xinjiang

Nuclear Engineering and Technology, 2023
Laboratory experiments and point monitoring of reservoir sediments have proven that stable sulfate reduction (SSR) can lower the concentrations of toxic metals and sulfate in acidic groundwater for a long time.
Zhenzhong Liu, Kaixuan Tan, Chunguang Li, Yongmei Li, Chong Zhang, Jing Song, Longcheng Liu   +6 more
doaj   +1 more source

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
doaj   +1 more source

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
openaire   +1 more source

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
doaj   +1 more source

Issues of Improving Control and Increasing Efficiency of Production Blocks at an ISL Uranium Mine

Горные науки и технологии, 2020
The tasks of continuous optimizing production, looking for ways of increasing performance, cutting mining costs and expanding mineral resource base of a mining enterprise are becoming more relevant than ever in conditions of the current negative trends ...
D. R. Podrezov
doaj   +1 more source

Estimating the Discharge Amount of Radon from Production Wells of CO2+O2 Uranium Mine

Journal of Isotopes, 2023
CO2+O2 in situ leaching uranium mine is the representative of the third generation uranium mining and metallurgy technology in China. In terms of radiation protection, the radon emission and the effective dose of the public are significantly lower than ...
ZHANG Hui;NIU Jie;DENG Jun;XU Lechang
doaj   +1 more source

The analysis of the experience of preparation of ores by underground leaching

Горные науки и технологии, 2017
Relevance. Method of underground leaching of metals can be modified are lost to traditional technology stocks, but the processes of leaching still produced no comprehensive records of natural and anthropogenic factors, so the results of the use of ...
V. I. Golik, Yu. I. Razorenov, Chang Zhong   +2 more
doaj   +1 more source