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Stepwise Chlorination-Chemical Vapor Transport Reactions for Bastnaesite Concentrate 雷鹏翔1,王之昌1,范世华1,王军1,张丽清1 (1.Department of Chemistry, Northeastern University, Shenyang 110006, China) Abstract:Vapor phase extraction and mutual separation of rare earth (RE) elements from bastnaesite concentrate were investigated using stepwise chlorination-chemical vapor transport reactions mediated by vapor......
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Interaction of reactive oily bubble in flotation of bastnaesite周芳1,2,王娄翔3,徐政和3,刘青侠3,池汝安1,21. School of Minerals Processing & Bioengineering, Central South University2. School of Chemical Engineering... mechanism of bastnaesite using reactive oily bubble, the interaction between bastnaesite particles and reactive oily bubbles was investigated by electro-kinetic studies, induction time measurements and small......
Interaction of reactive oily bubble in flotation of bastnaesite周芳1,2,王娄翔3,徐政和3,刘青侠3,池汝安1,21. School of Minerals Processing & Bioengineering, Central South University2. School of Chemical Engineering... mechanism of bastnaesite using reactive oily bubble, the interaction between bastnaesite particles and reactive oily bubbles was investigated by electro-kinetic studies, induction time measurements and small......
Phase transition of bastnaesite concentrate in calcification processYu-Kun Huang,Ting-An Zhang,Zhi-He Dou,Jiang Liu,Fang-Fang TangKey Laboratory of Ecological Metallurgy of Multi-Metal Intergrown... was investigated by X-ray diffraction(XRD) and differential scanning calorimeter(DSC), and the effect of calcification on the leaching rate of rare earth was analyzed. The results show that bastnaesite transforms......
Decomposition process of bastnaesite concentrate in NaOH-CaO-H2O systemJiang Liu,Ting’an Zhang,Zhihe Dou,Yan Liu,Guozhi Lv摘 要:A novel process of calcification-leaching for bastnaesite concentrate(REFCO3) was proposed. The prior calcification was carried out in the system of NaOH-CaO-H2O and the lgC-pH pattern for Ce-F-Ca-C-H2O system was drawn......
Decomposition process of bastnaesite concentrate in NaOH-CaO-H2O systemJiang Liu,Ting’an Zhang,Zhihe Dou,Yan Liu,Guozhi Lv摘 要:A novel process of calcification-leaching for bastnaesite concentrate(REFCO3) was proposed. The prior calcification was carried out in the system of NaOH-CaO-H2O and the lgC-pH pattern for Ce-F-Ca-C-H2O system was drawn......
="ChDivSummary" name="ChDivSummary">The bastnaesite used in hydrometallurgy usually contains 7%-11% fluorine,and the conversion of fluorine into high-value products is the key to achieving green production of rare earths and improving the comprehensive utilization of bastnaesite.In order to recover fluorine from bastnaesite in the form of KBF4,the mechanism of F-conversion to BF4-in sulphuric acid......
Kinetic study on bastnaesite concentrate mechanochemical decomposition in NaOH solutionJiang Liu,Zhihe Dou,Ting’an ZhangKey Laboratory of Ecological Metallurgy of Multi-Metal Intergrown Ores...;the latter increases the effective reaction area and improves the reactivity,thus enhancing its kinetics.The classical shrinking core model was used to model the kinetics of bastnaesite mechanochemical......