Results 121 to 130 of about 14,611 (161)

Uranium Deposits (In-Situ Leach Projects)

2016
Sandstone-type uranium deposits are commonly located below the water table in weakly lithified or non-consolidated sands, and therefore they can be exploited using In-Situ Leach (ISL) technology. Such technology is based on dissolving uranium minerals directly in their host rocks (in-situ) by reactive solutions that are injected through drill holes ...
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Uranium In Situ Leaching Sulfur Chemistry

Mining, Metallurgy & Exploration, 1985
In situ leaching of uranium by aqueous ammonium carbonate containing oxygen or hydrogen peroxide as oxidant results in the partial dissolution of sulfides. While some of the sulfide sulfur is oxidized to sulfate, a considerable portion is oxidized only to thiosulfate and polythionates. Polythionates poison the ion exchange resin used to extract uranium.
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Aquifer restoration at uranium in situ leach sites

International Journal of Mine Water, 1984
In situ mining of uranium involves injection of a leaching solution (lixiviant) into an ore-bearing aquifer. Frequently, the ground water in the mined aquifer is a domestic or livestock water supply. As the lixiviant migrates through the ore body, uranium and various associated elements such as arsenic, selenium, molybdenum, vanadium and radium-226 are
Frank S. Anastasi, Roy E. Williams
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Hydrodynamic and leaching efficiency comparison of horizontal and vertical well Systems in Uranium in-Situ Leaching

Journal of Contaminant Hydrology
Vertical wells are predominantly used for both injection and extraction in uranium in-Situ leaching (ISL), yet they often produce uneven spreading of leaching solution and relatively low leaching efficiency. Horizontal wells, widely applied in oil and shale-gas operations, offer a plausible alternative for solution injection, but their suitability for ...
Yong, Chang, Yixuan, Ren, Genmao, Zhou, Xuebin, Su, Zhaokun, Li, Yinquan, Ding, Yun, Yang, Jichun, Wu   +7 more
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In Situ Precipitation of Scorodite in Atmospheric Leaching of Enargite

2018
Enargite, known as one of the major arsenic containing copper minerals, with approximately 19% arsenic, introduces challenges to typical processing options. In most hydrometallurgical processing methods, arsenic remediation occurs after the copper recovery in an autoclave or in a stepwise neutralization process. In this study, the in situ precipitation
Fazel G. Jahromi, Ahmad Ghahreman
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Critical Review of In-Situ Leach Uranium Mining Practices [PDF]

In-Situ Leaching (ISL) involves the extraction of uranium by delivering a solution through well bores into an underground uranium ore-body. The solution dissolves the uranium and is intercepted and pumped to the surface for processing. The ISL process is an economically attractive method for extracting uranium ore from low-strength saturated sands or ...
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In-situ leaching technology for uranium deposits

Eurasian Mining, 2021
E. S. Oryngozhin, E. V. Fedorov, Zh. N. Alisheva, N. A. Mitishova   +3 more
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In-situ leaching of copper from spent heaps

Hydrometallurgy, 2022
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In Situ Crushing Leaching Mining Method

2023
Yu Bin, Xu Kuangdi
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In-situ leaching recovery of copper: what’s next?

1994
The recovery of mineral and metal values by solution mining has been practiced for centuries. What appears at first glance to be a simple, empirical technique, is in actuality a very complicated process involving a large number of critical parameters that encompass several scientific and engineering disciplines.
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