Results 41 to 50 of about 132 (97)

Effects of Reagent Concentration and Particle Size οn Diffusion Rate of Mixed Ores with Rare Elements

, 2013
The leaching reaction kinetics of weathered crust elution-deposited rare earth with mixed ammonium salts was studied. The influence of concentration of reagents and particle size of ore on leaching rate was investigated.
Yang, X., L. Zhang, Zhang, L., X.Z. Yang
core   +1 more source

Role of Calcium Chloride on the Eluting Process of Residual Ammonium from Weathered Crust Elution-Deposited Rare Earth Ore Tailings

A large amount of ammonium salt leaching agent will remain in the leaching site of weathered crust elution-deposited rare earth ore (WREOs). The release of residual ammonium (RA) will seriously affect the water system ecology of the mining area, and it ...
Jian Feng, Fang Zhou, Ruan Chi, Xiaoyan Wu   +3 more
core   +1 more source

Direct reuse of rare earth oxalate precipitation mother liquor for rare earth leaching

, 2019
In the recovery process of rare earth (RE) from the weathered crust elution-deposited rare earth ore, ammonium sulfate is used as the leaching liquor to leach RE, and then the leachate containing RE3+ can be precipitated by oxalic acid and the RE oxalate
Liu, Xueme, Chi, Ruan, Wu, Xiaoyan, Feng, Jian, Zhang, Zhenyue, Zhou, Fang   +5 more
core   +1 more source

Enrichment and Fractionation of Rare Earth Elements in High-Altitude Thick Weathered Crust Elution-Deposited Rare Earth Ore

Minerals
Weathered crust elution-deposited rare earth ores (WCE-REOs) are the primary global source of medium and heavy rare earth elements (M/HREEs). The recent discovery of high-altitude (1500–2500 m) WCE-REOs in southern Yunnan Province, China, presents new opportunities for the development of M/HREE resources.
Zhenyue Zhang, Dan Li, Fei Long, Ruan Chi, Zhuo Chen   +4 more
openaire   +1 more source

Seepage process on weathered crust elution-deposited rare earth ores with ammonium carboxylate solution

, 2020
In order to reveal the seepage law of ammonium carboxylate solution in the in-situ leaching process of weathered crust elution-deposited rare earth ores, the effects of concentration, pH, temperature, particle size and porosity on permeability were ...
Chen, Zhuo, Chai, Xiuwei, Zhang, Han, Chi, Ru-an, Liu, Defeng, Zhang, Zhenyue, Zou, Hualiang   +6 more
core  

A concept for seabed rare earth mining in the eastern South Pacific

, 2012
This report presents a concept for mining of rare earth elements from seabed sediment in a promising area of the eastern South Pacific. The document begins with an introduction to the seabed, its regulation and resources.
Bashir, M.B., Zhang, W, Kiosidou, E., Kim, S.H., Wolgamot, H.   +4 more
core  

Nature of parent rocks, mineralization styles and ore genesis of regolith-hosted REE deposits in South China: An integrated genetic model

, 2017
Regolith-hosted rare earth element (REE) deposits, also called ion-adsorption or weathered crust elution-deposited REE deposits are distributed over Jiangxi, Guangdong, Fujian, Hunan, Guangxi and Yunnan provinces in South China.
Zhou, MF, Zhao, W, Wen Winston Zhao, Mei-Fu Zhou, Li, YH, Yan Hei Martin Li   +5 more
core   +1 more source

Editorial: The Separation and Removal of Inorganic Ions and Organics From Aqueous Solutions. [PDF]

Front Chem, 2021
Bao S, Peng H, Rao F, Zhang W.
europepmc   +1 more source

Adsorption of Sc on the Surface of Kaolinite (001): A Density Functional Theory Study. [PDF]

Materials (Basel), 2023
Zhao Z, Wang K, Wu G, Jiang D, Lan Y.
europepmc   +1 more source

86th Annual Meeting of the Meteoritical Society (2024)

Meteoritics &Planetary Science, Volume 59, Issue S1, Page A1-A468, August 2024.
wiley   +1 more source