Results 1 to 10 of about 90 (71)
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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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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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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International Journal of Mining Science and Technology, 2023 Surfactants were proposed to be added into magnesium sulfate solution to improve the leaching process of weathered crust elution-deposited rare earth ores (WREOs).
Fang Zhou +4 more
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Leaching process of rare earths from weathered crust elution-deposited rare earth ore
Transactions of Nonferrous Metals Society of China, 2010 In order to strengthen the leaching procedure, the chemical processes of leaching rare earths (RE) from the weathered crust elution-deposited rare earth ore were investigated frow the viewpoints of kinetics, hydrodynamic and mass transfer. The results show that the leaching hydrodynamics follows the Darcy law.
Ruan Chi
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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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Minerals (Basel, Switzerland), 2023 Weathered crust elution-deposited rare earth ores are key strategic resources and the main source of medium and heavy rare earths. This paper summarizes the development of leaching technology of rare earth ores, compares the advantages and disadvantages of the three generations of leaching technology, and introduces the improved heap leaching ...
Zhigao Xu, Huifang Yang, Zhengyan He
exaly +2 more sources
Transactions of Nonferrous Metals Society of China, 2016 In order to better understand the leaching process of rare earth (RE) and aluminum (Al) from the weathered crust elution-deposited RE ore, the mass transfer of RE and Al in column leaching was investigated using the chromatographic plate theory. The results show that a higher initial ammonium concentration in a certain range can enhance the mass ...
Junxia Yu, Zhigao Xu, Fang Zhou
exaly +2 more sources
Soil-water characteristics of weathered crust elution-deposited rare earth ores
Transactions of Nonferrous Metals Society of China, 2021 Abstract The permeability of the weathered crust elution-deposited rare earth ores directly affects the efficiency of in-situ leaching. The soil-water characteristic curve (SWCC) is an important constitutive relation for calculating the permeability of ore body, which is related to many factors.
Zhong-qun GUO +5 more
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