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Kinetics of nitric acid leaching of cerium from oxidation roasted Baotou mixed rare earth concentrateKai Li1,2,Ji Chen1,Dan Zou1,Tianchi Liu1,2,Deqian Li11. State Key Laboratory of Rare Earth...,the decomposition process of oxidizing roasting was also obtained by TGe MS and XRD. Different kinetics models were applied in this leaching process. The results of dynamic fitting show that the leaching......
Leaching kinetics of ionic rare-earth in ammonia-nitrogen wastewater system added with impurity inhibitors邱廷省1,朱冬梅2,方夕辉1,曾清华1,3,高广阔1,朱华磊11. Faculty of Resource and Environmental Engineering, Jiangxi... kinetics studies of both rare earth ions and impurity ion Al3+ were conducted in the ammonia-nitrogen wastewater system with the aid of impurity inhibitors.Results showed that the leaching process of rare......
Leaching kinetics of ionic rare-earth in ammonia-nitrogen wastewater system added with impurity inhibitors邱廷省1,朱冬梅2,方夕辉1,曾清华1,3,高广阔1,朱华磊11. Faculty of Resource and Environmental Engineering, Jiangxi... kinetics studies of both rare earth ions and impurity ion Al3+ were conducted in the ammonia-nitrogen wastewater system with the aid of impurity inhibitors.Results showed that the leaching process of rare......
Comparison on the leaching kinetics of chalcocite and pyrite with or without bacteriaRUAN Renmana,b,ZHOU Ec,LIU Xingyub,d,WU Biaod,ZHOU Guiyingd,and WEN Jiankangd a School of Minerals Processing... National Engineering Laboratory of Biohydrometallurgy,General Research Institute for Nonferrous Metals,Beijing 100088,China摘 要:The acid leaching,ferric......
of the solution did not substantially change, and that of the solution with surfactant increased slightly. The kinetics analysis of ore column leaching illustrated that the leaching processes were...Accelerating leaching of copper ore with surfactant and the analysis of reaction kineticsChun-ming Ai1,2,Ping-ping Sun1,Ai-xiang Wu2,Xun Chen2,Chao Liu31. College of Safety Science and Engineering......
; leaching kinetics; activation energy; reaction orders Cite this article as: TIAN Lei, GONG Ao, WU Xuan-gao, XU Zhi-feng, ZHANG Ting-an, LIU Yan, WEI Kui-xian, YU Zhan-liang. Oxygen pressure acid leaching... on the kinetics of the electrochemical process [8]. Therefore, impurities, different mineral phases and different ions in the solution are important factors in the leaching process. Moreover, in an oxygen......
Institute, Kunming 650031, China摘 要:In this paper, the kinetics of pressure leaching for purification of metallurgical grade silicon with hydrochloric acid...Kinetics of iron removal from metallurgical grade silicon with pressure leachingYU Zhanlianga, b, c, XIE Keqianga, MA Wenhuia, ZHOU Yanga, XIE Gangb, c, and DAI Yongniana a National Engineering......
+ and Fe3+. And the electrochemical study of H+ and Fe3+ to the leaching process was analyzed. The electrochemical reaction process of Fe3+ catalytic the leaching system was investigated. The kinetics... catalysis at the beginning of the reaction. The process of Fe3+ catalyzing MnO2-FeS2-H2SO4 leaching system completely matches (liquid/solid) reaction kinetics with solid reactant controlled. Key words......
Decomposition of mixed rare earth concentrate by NaOH roasting and kinetics of hydrochloric acid leaching processMei Li1,2,3,Jianfei Li1,2,Dongliang Zhang2,3,Kai Gao2,3,Huihui Wang2,Wei Xu2,Jinlong... and factors such as HCl concentration,liquid-solid ratio,leaching temperature and leaching time on the dissolution kinetics of roasted ore were studied.The experimental results show that when......
Decomposition of mixed rare earth concentrate by NaOH roasting and kinetics of hydrochloric acid leaching processMei Li1,2,3,Jianfei Li1,2,Dongliang Zhang2,3,Kai Gao2,3,Huihui Wang2,Wei Xu2,Jinlong... and factors such as HCl concentration,liquid-solid ratio,leaching temperature and leaching time on the dissolution kinetics of roasted ore were studied.The experimental results show that when......
