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J. Cent. South Univ. Technol. (2010) 17: 760-764 DOI: 10.1007/s11771-010-0553-x Solvent extraction of zinc from zinc sulfate solution LONG Huai-zhong(龙怀中)1, CHAI Li-yuan(柴立元)1, QIN Wen-qing(覃文庆)2...; Abstract: The extraction of zinc from zinc sulfate solution was investigated, using 20% saponified D2EHPA as an extractant and 260# sulfonate kerosene......
Automation System in Rare Earths Countercurrent Extraction Processes 廖春生1,严纯华1,王明文1,吴声1,李标国1,贾江涛1 (1.State Key Laboratory of Rare Earth Materials Chemistry and Applications, Beijing Institute of Founder Rare Earth Science and Technology, Peking University,) Abstract:Based on the countercurrent extraction theory for optimized designing and simulating, the rare earth separation processes......
J. Cent. South Univ. Technol. (2008) 15: 814-818 DOI: 10.1007/s11771-008-0150-4 Current efficiency improvement of Zn-Fe alloy electrodeposition by hydrogen inhibitor WANG Yun-yan(王云燕), XIAO...; Abstract: In order to inhibit hydrogen evolution and enhance current efficiency......
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, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China) Abstract: In order to investigate the factors of aluminum electrodeposition rate, current efficiency and cathode..., temperature of 40 ℃ and stirring speed of 700 r/min. The current efficiency is above 80% and the purity of the deposits achieves 96%, where the fraction oxygen is from oxide of aluminum. Key words......
High-efficiency simultaneous extraction of rare earth elements and iron from NdFeB waste by oxalic acid leachingQingsheng Liu1,Tao Tu1,2,Hao Guo3,Huajin Cheng1,Xuezhong Wang11. Faculty of Materials... leaching process.In this study,a new method for leaching NdFeB waste with oxalic acid was developed.The high-efficiency,simultaneous and high-value recovery of rare earth elements and iron......
emulsification or low extraction efficiency. β-diketone is the most alternative for recovering zinc from ammoniacal media [12]. Acetylacetone (Hacac) and thenoyltrifluoroacetone (Htta) were widely..., it should be paid attention that the extraction efficiency of various β-diketones mentioned above is still too low for industrial application and decreases dramatically with the increase of pH or ammonia......
Influence of confining stress on fracture characteristics and cutting efficiency of TBM cutters conducted on soft and hard rockLIU Jing-shuo(刘京铄), CAO Ping(曹平), LIU Jie(刘杰), JIANG Zhe(蒋喆) (School... by performing analysis on the fracture scopes of cement and granite plates, the characteristics of cutting force in cutting processes and the cutting efficiency. Firstly, the increase of latitude fracture......
J. Cent. South Univ. (2020) 27: 1917-1938 DOI: https://doi.org/10.1007/s11771-020-4420-0 Automated extraction of expressway road surface from mobile laser scanning data TRAN Thanh Ha, TAWEEP... GmbH Germany,part of Springer Nature 2020 Abstract: This paper presents a voxel-based region growing method for automatic road surface extraction from mobile laser scanning point clouds......