Research on the Negative Externalities Evaluation for the Development of Weathered Crust Elution-Deposited Rare Earth Ores [PDF]
Advances in Materials Science and Engineering, 2020 To standardize the specification of negative externality management of mining resources development and promote the process of marketization and diversification of ecological compensation, the article reviews the perspective and method of quantitative ...
Xu Ligang, Xu Meijuan
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Effects of Ion Characteristics on the Leaching of Weathered Crust Elution-Deposited Rare Earth Ore [PDF]
Frontiers in Chemistry, 2020 To reveal the ion-exchange mechanism in the leaching process of weathered crust elution-deposited rare earth ores with different leaching agents, the effects of a variety of cations and anions at different concentrations on the leaching process were ...
Zhenyue Zhang +5 more
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Leaching Process of Weathered Crust Elution-Deposited Rare Earth Ore With Formate Salts [PDF]
Frontiers in Chemistry, 2020 To strengthen the rare earth leaching process and weaken the hydration of clay minerals for preventing landslides, it is of great importance to adopt a green and sustainable leaching agent in the industry.
Zhuo Chen +4 more
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Metals, 2023 In order to reveal the influence of ammonium salts on the rare earth leaching process of weathered crust elution-deposited rare earth ores, ammonium acetate, ammonium chloride, and ammonium sulfate were used as leaching agents.
Zhenyue Zhang +5 more
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Discussion on Pretreatment Method for Extracting Rare Earth Elements from Weathered Crust Elution-deposited Rare Earth Ores [PDF]
Yankuang ceshi, 2023 BACKGROUNDWeathered crust elution-deposited rare earth ores are the dominant mineral resources in China[1-5]. The occurrence of rare earth elements (REEs) in weathering crust elution-deposited is very complicated.
Yun ZHU +7 more
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Journal of Rare Earths, 2017 Abstract Weathered crust elution-deposited rare earth ore is an important resource of rare earths, including grantic weathered crust elution-deposited rare earth ore and volcanic weathered crust elution-deposited rare earth ore. The development condition of the weathered crust, weathering degree and mineral composition of these ores will be different
Yanfei Xiao
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Isolation and Nitrogen Removal Efficiency of the Heterotrophic Nitrifying-Aerobic Denitrifying Strain K17 From a Rare Earth Element Leaching Site [PDF]
Frontiers in Microbiology, 2022 K17, an indigenous and heterotrophic nitrifying-aerobic denitrifying bacterium, was isolated from the soil of a weathered crust elution-deposited rare earth ore leaching site in Longnan County, China. Strain K17 was identified as Pseudomonas mosselii. In
Jingang Hu +6 more
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Rare Earth Occurrence States of Weathered Crust Elution-Deposited Rare Earth Ores in Southern Yunnan
Minerals, 2023 To reveal the regularity of variation in the rare earth occurrence states of weathered crust elution-deposited rare earth ores, ore samples from different weathering crust layers were obtained by performing the sequential extraction procedure. The order of rare earth contents firmly obeyed the following sequence: the weathered layer > humic layer ...
Wendou Chen +4 more
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Leaching Kinetics of Weathered Crust Elution-Deposited Rare Earth Ore with Compound Ammonium Carboxylate [PDF]
Minerals, 2020 Due to the special properties of the ammonium salts, ammonium acetate and ammonium citrate were used to explore the best leaching conditions of rare earth with compound ammonium carboxylate. This paper explored the influence of the molar ratio, ammonium concentration, experimental temperature, and pH of the compound leaching agents on the leaching ...
Xiuwei Chai +4 more
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Rare earth resources in Laos: Characteristics and the prospects for exploration and development
地质科技通报, 2022 Rare Earth Elements are strategically critical metals of all countries in the world with the medium and heavy REEs are particularly important. A large number of granitoids of different ages are distributed in Laos.
Liang Lü +4 more
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