Results 51 to 60 of about 123 (90)

Ecological Imprint of Rare Earth Mining on Microbial Communities and Water Quality Across Depth and Distance Gradients in Ganzhou, China. [PDF]

Microorganisms
Wang Y, Shi F, Lang F, Wang G, Mao Y, Xiao Y, Yin L, He G, Liao Y.   +8 more
europepmc   +1 more source

Preparation of Zeolite A from Ion-Adsorbing Rare Earth Tailings for Selective Adsorption of Pb²⁺: An Innovative Approach to Waste Valorization. [PDF]

Molecules
Huang Q, Wang W, Lai W, Liang B, Xiao B, Gu J, Huang Z, Zeng X, Liu H, Hu H, Yuan W.   +10 more
europepmc   +1 more source

Local concentration of middle and heavy rare earth elements in the col on the weathered crust elution-deposited rare earth ores

Journal of Rare Earths, 2018
Abstract This present study focused on investigating the content and relative enrichment multiple of rare earth elements (REEs) in different terrain of weathered ore body, and the value of light rare earth elements/middle and heavy rare earth elements (LREEs/HREEs), in order to understand the mobilization and redistribution of HREEs. Furthermore, the
Zhenyue Zhang, Zhengyan He, Ruan Chi
exaly   +3 more sources

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Adsorption and desorption performances of ammonium on the weathered crust elution-deposited rare earth ore

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2021
Abstract Release of the remaining ammonium salts from the weathered crust elution-deposited rare earth ore (WCE-DREO) would pose a serious threat to the environment. Thus, in this study, the adsorption and desorption performances of the WCE-DREO and four minerals that composed it were investigated to select an efficient eluent for the remained ...
Junxia Yu, Ruan Chi, Haobo Hou
exaly   +2 more sources

Process optimization on leaching of a lean weathered crust elution-deposited rare earth ores

International Journal of Mineral Processing, 2013
Abstract The process on leaching of rare earth from the lean weathered crust elution-deposited rare earth ores with ammonium sulfate solution was elucidated and optimized with the chromatographic plate theory. The effects of the flowrate, the packed ore height, the concentration of leach reagents and leach reagent consumption on leaching performance ...
Xuekun Tang, Xianping Luo
exaly   +2 more sources

Effect of a novel compound on leaching process of weathered crust elution-deposited rare earth ore

Minerals Engineering, 2018
Abstract The leaching process of weathered crust elution-deposited rare earth ore is a typical noncatalytic heterogeneous reaction in liquid–solid systems. In order to intensify the leaching process of rare earth and reduce the impurity leaching accompanying with rare earth, ammonium sulfate and ammonium formate were mixed as a novel compound ...
Fang Zhou, Ruan Chi, Yuanlai Xu
exaly   +2 more sources

Swelling of clay minerals in ammonium leaching of weathered crust elution‐deposited rare earth ores

Rare Metals, 2017
Abstract The effect of hydrated radius, cation valence, pH and solution concentration on the zeta potential of clay minerals was investigated, and the relation between zeta potential of clay minerals and swelling was discussed in different leaching agents as well.
Zhen‐Yue Zhang, Zheng‐Yan He, Fang Zhou, Cheng‐Bin Zhong, Ning‐Jie Sun, Ru‐An Chi   +5 more
openaire   +2 more sources

One step purification of impurities in the leachate of weathered crust elution-deposited rare earth ores

, 2017
Physicochemical Problems of Mineral Processing; ISSN 2084 ...
Fang, Zhou, Jian, Feng, Ziqing, Wang, Yuanlai, Xu, Zhenyue, Zhang, Ruan, Chi   +5 more
openaire   +2 more sources

Mineral properties and leaching characteristics of volcanic weathered crust elution-deposited rare earth ore

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
exaly   +2 more sources

Novel solution injection technology for in-situ leaching of weathered crust elution-deposited rare earth ores

Hydrometallurgy, 2016
Abstract Weathered crust elution-deposited rare earth ores are rich in the middle and heavy rare earths. The present study investigated the content of exchangeable aluminum and the exchangeable rare earth in the different layer of orebody and the partitioning of rare earth was determined as well to understand the mode of occurrence of rare earth ...
Zhenyue Zhang, Zhengyan He, Junxia Yu
exaly   +2 more sources