Results 11 to 20 of about 86,385 (292)

Improved FMM for well locations optimization in in-situ leaching areas of sandstone uranium mines

Nuclear Engineering and Technology
Rapidly obtaining the coverage characteristics of leaching solution in In-situ Leaching Area of Sandstone Uranium Mines is a necessary condition for optimizing well locations reasonably. In the presented study, the improved algorithm of the Fast Marching
Mingtao Jia, Bosheng Luo, Fang Lu, YiHan Yang, Meifang Chen, Chuanfei Zhang, Qi Xu   +6 more
doaj   +2 more sources

Quantifying Phosphorus Leaching Loss from Mollisol with Organic Amendments

Agronomy, 2022
The phosphorus (P) leaching from continuous fertilization is generally neglected in mollisol. The in situ leaching loss of phosphorus (P), especially dissolved organic P, is poorly quantified under organic amendments given its potential environmental ...
Hongyan Wang, Shuxiang Zhang, Chang Peng, Guangyu Chi, Xin Chen, Bin Huang, Caiyan Lu, Jizhi Li, Li Xu   +8 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

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

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
doaj   +1 more source

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
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

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
doaj   +1 more source

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
doaj   +1 more source

Using a linked soil model emulator and unsaturated zone leaching model to account for preferential flow when assessing the spatially distributed risk of pesticide leaching to groundwater in England and Wales [PDF]

, 2004
Although macropore flow is recognized as an important process for the transport of pesticides through a wide range of soils, none of the existing spatially distributed methods for assessing the risk of pesticide leaching to groundwater account for ...
Dubus, Igor G., Holman, Ian P., Hollis, J. M., Brown, Colin D.   +3 more
core   +1 more source