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Mineral properties and leaching characteristics of volcanic weathered crust elution-deposited rare earth ore冯宗玉2,董金诗2,孟祥龙2,肖燕飞2,刘向生22. National Engineering Research Center for Rare Earth Materials... properties and leaching characteristics of volcanic weathered crust elution-deposited rare earth ore from Chongzuo(CZ), Guangxi province were investigated. It was found that the CZ rare earth ore......
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;钒浸出率 中图分类号:TF803.21 文献标志码:A Leaching vanadium from extracted vanadium residue of vanadium titanomagnetite DENG Zhi-gan, WEI Chang, LI Xing-bin... was leached by composed leaching reagent of sulphuric acid, hydrofluoric acid and sodium hypochlorite from extracted vanadium residues of vanadium titanomagnetite. The process parameters, which impact......
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... mainly includes NaOH roasting to decompose rare earth concentrate and HCl leaching roasted ore.The effects of roasting temperature,roasting time,NaOH addition amount on the extraction of rare earth......
Aqueous stability of rare earth and thorium elements during hydrochloric acid leaching of roasted bastnaesiteGenghong Shuai1,2,Longsheng Zhao1,2,Liangshi Wang1,2,Zhiqi Long1,2,Dali Cui1,21. National... to study the aqueous stability of rare earth and thorium elements and the reaction mechanism of hydrochloric acid leaching of roasted bastnaesite,Eh-pH diagrams for La-,Nd-,Ce-,Th-(Cl)-(F)-H2 O systems......
Aqueous stability of rare earth and thorium elements during hydrochloric acid leaching of roasted bastnaesiteGenghong Shuai1,2,Longsheng Zhao1,2,Liangshi Wang1,2,Zhiqi Long1,2,Dali Cui1,21. National... to study the aqueous stability of rare earth and thorium elements and the reaction mechanism of hydrochloric acid leaching of roasted bastnaesite,Eh-pH diagrams for La-,Nd-,Ce-,Th-(Cl)-(F)-H2 O systems......
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... mainly includes NaOH roasting to decompose rare earth concentrate and HCl leaching roasted ore.The effects of roasting temperature,roasting time,NaOH addition amount on the extraction of rare earth......
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Science and Engineering, University of Science and Technology Beijing摘 要:The effects of the acid leaching and alkali fusion on the leaching efficiency of Y,Eu,Ce,and Tb from the waste rare earth fluorescent powders were investigated in this paper.The results show that hydrochloric acid is better than sulfuric acid in the first acid leaching,and NaOH......
="ChDivSummary" name="ChDivSummary">In this work,a two-step zircon method to produce zirconium oxychloride was introduced,and the alkali fusion technique with NaOH and water leaching process were... are not observed.The conditions of water leaching process were investigated as well,and the optimal conditions are as follows:liquid-solid ratio of 5:1,leaching time of 0.5 h,leaching temperature of 50......