Results 171 to 180 of about 2,358 (208)

Calcite Control in In-Situ Uranium Leaching Process

Journal of Petroleum Technology, 1980
A method has been developed to control the problem of calcite deposits inthe in-situ uranium leaching process using carbonates as the lixiviant. Achemical inhibitor is added to the calcium-supersaturated lixiviant (andother process streams) at critical locations in sufficient quantity to forma metastable solution of calcite so that the lixiviant can ...
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The Role of Oxidizing Agent in the Chemistry of In-Situ Uranium Leaching

Journal of Petroleum Technology, 1982
Abstract A one-well test to evaluate reservoir properties that govern the restorability of a zone in an underground aquifer to be solution mined for uranium has been considered. The test involves injection of a relatively small volume of leach solution and subsequent production of a larger volume of fluid.
Ronald H. Carson, Robert D. Norris, Richard Schellinger   +2 more
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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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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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Selective uranium oxidation during in situ leaching

Mining, Metallurgy & Exploration, 1992
O2, NaClO3, H2O2, NaOCl and Ce+4 have been examined as oxidants in an alkaline carbonate system for uranium in situ leaching. The South Texas and New Mexico ores contained up to 2.6 meq/g of reducing compounds that consume oxidants in the leaching operation. Leaching rates did not increase linearly with the oxidation potential of the oxidants.
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Environmental Assessment of In-Situ Leaching of Uranium: ABSTRACT

AAPG Bulletin, 1979
Maintenance of water quality during and following in-situ leaching of uranium is the fundamental problem which must be considered in an environmental assessment of such operations. Prior to any leaching activity, a realistic baseline by which to judge the groundwater quality must be established for any given operation.
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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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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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Uranium In-Situ Leach Mining--A Third Alternative: ABSTRACT

AAPG Bulletin, 1979
Uranium in-situ leach mining, when used as a single commercial mining method, represents a technologic breakthrough with which many people are not familiar. In the last 5 years, plant-installed capacities for uranium in-situ leach mining have increased approximately 12-fold. There are now at least seven western states which have activities of some type
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Investigation on the Reactive Transport Characteristic of Uranium-Bearing Sandstone During the In-Situ Leaching Mining Uranium

Journal of Environmental Radioactivity
The multi-phase flow in dynamic pore-fracture is crucial to the safety and efficient uranium mining using the in-situ leaching method. In this study, the pore-fracture evolution and multi-phase flow morphology was investigated using the online low-field nuclear magnetic resonance (NMR) system, and the relationship of pore structure, permeability ...
Xuebin, Su, Junlin, Mao, Tong, Zhang, Xin, Yang, Yihan, Yang, Chuanfei, Zhang, Peng, Qiao, Bingzhang, Li, Fan, Chen   +8 more
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