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Thermal decomposition mechanism of low-content-fluorite Bayan Obo rare earth concentrate roasted with sodium carbonate and its consequent separation study被引量：6: 《Journal of Rare Earths》2020年第9期994-1002,I0003,共10页Dan Zou Ji Chen Jiashi Hu Kai Li Deqian Li; Project supported by the National Basic Research Program of China(2012CBA1202);the National Natural Science Foundation of China(51174184);the Key Research Program of the Chinese Academy of Sciences(KGZD-EW-201-1)。; Thermal decomposition and phase transformation for the mixture of Bayan Obo rare earth concentrate(BORC)and sodium carbonate(Na2CO3)roasted at different temperatures with weight ratio of 100:20 were studied in detail ...; 关键词：Thermal decomposition mechanism Bayan Obo RE concentrate NA2CO3 Technique CeF3 Rare earths

Kinetic study on bastnaesite concentrate mechanochemical decomposition in NaOH solution被引量：2: 《Journal of Rare Earths》2020年第4期418-426,共9页Jiang Liu Zhihe Dou Ting’an Zhang; Project supported by the Fundamental Research Funds for the Central Universities(N172506009,N170908001,N182515007,N180725023);National Natural Science Foundation of China(U1508217).; Mechanochemical reaction involves simultaneous chemical reaction and particle crushing;the latter increases the effective reaction area and improves the reactivity,thus enhancing its kinetics.The classical shrinking c...; 关键词：BASTNAESITE CONCENTRATE MECHANOCHEMICAL decomposition Sodium HYDROXIDE Kinetics RARE earths

Decomposition process of bastnaesite concentrate in NaOH-CaO-H2O system被引量：2: 《Journal of Rare Earths》2019年第7期760-766,共7页Jiang Liu Ting’an Zhang Zhihe Dou Yan Liu Guozhi Lv; Project supported by the Fundamental Research Funds for the Central Universities(973 program,No.N172506009,N170908001); 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 dra...; 关键词：BASTNAESITE CONCENTRATE CALCIFICATION PROCESS Thermodynamics FLUORINE Rare earths

Microwave strengthens decomposition of mixed rare earth concentrate: Microwave absorption characteristics被引量：7: 《Journal of Rare Earths》2019年第5期541-546,共6页Yukun Huang Ting'an Zhang Zhihe Dou Guozhi Lv Guihong Han Weijun Peng; Project supported by the National Basic Research Program of China(2012CBA01205);the Basic Research Universities Special Fund Operations(N162505002); The potential application of microwave heating technology for processing the mixed rare earth concentrate was systematically investigated by analyzing the microwave absorption characteristics in this study. The comple...; 关键词：MICROWAVE processing MICROWAVE absorption CHARACTERISTICS Dielectric CONSTANT Loss TANGENT Mixed RARE earth CONCENTRATE

Thermal decomposition and oxidation of bastnaesite concentrate in inert and oxidative atmosphere被引量：18: 《Journal of Rare Earths》2018年第7期758-764,共7页Longsheng Zhao Liangshi Wang Genghong Shuai Zhiqi Long Dali Cui Xiaowei Huang; supported by the National Natural Science Foundation of China(51404035);Beijing Nova program(Z161100004916108); To clearly elucidate the oxidative roasting behaviors of the bastnaesite, the thermal decomposition and oxidation of the bastnaesite concentrate in inert and oxidative atmosphere have been investigated in detail. Expe...; 关键词：BASTNAESITE Thermal decomposition Oxidation Inert atmosphere Oxidative atmosphere Rare earths

Flotation performance and adsorption mechanism of styrene phosphonic acid as a collector to synthetic(Ce,La)2O3被引量：12: 《Journal of Rare Earths》2017年第6期621-628,共8页YANG Zhiren BIAN Xue WU Wenyuan; Project supported by National Basic Research Program of China(973 Program)(2012CBA01205); The flotation performances of styrene phosphonic acid（SPA） to synthetic（Ce,La）2O3（REO）, calcium fluorite（CaF2） and fluorapatite（Ca5F（PO4）3） were investigated by flotation tests, flotation of synthetic mixe...; 关键词：flotation collector Ce La styrene adsorbed photoelectron concentrate selectivity collecting Adsorption

Study on Scandium Separation from Rare Earth Ore in Yunnan Province被引量：2: 《Journal of Rare Earths》2005年第S1期531-535,共5页张宗华张桂芳高利坤陈小鸣; ProjectsupportedbyResearchofReconnaissanceKeyTechnologyonHighGradeOreResourceofWest(2003BA612A18); Chemical components, main mineral content and mineral composition of rare earth ore in Yunnan Province was measurated by the analysis of the spectrum and the chemical components. The study shows that main metals miner...; 关键词：extracting Sc magnetic separation gravity concentrate electrostatic separation rare earths

Studies on Sulfating Roasting Process for Mianning Bastnasite and Baotou Mixed RE Concentrate Ore被引量：1: 《Journal of Rare Earths》2004年第z1期282-286,共5页Miao Guangli; Some processes of sulfating roasting and water leaching of crude Mianning RE concentrate ore, of fine Mianning RE concentrate ore, of Baotou RE concentrate ore and of their mixture were investigated.The result shows t...; 关键词：Mianning RE CONCENTRATE ORE Baotou RE CONCENTRATE ORE sulfating ROASTING PROCESSING

Decomposition Reaction of Mixed Rare Earth Concentrate and Roasted with CaO and NaCl被引量：8: 《Journal of Rare Earths》2004年第z1期53-56,共4页Wu Wenyuan Hu Guangyong Sun Shuchen Chen Xudong Tu Ganfeng; The reaction of the mixed rare earth concentrate including monazite ( REPO4 ) and bastnaesite ( REFCO3 )decomposed by CaO and NaCl additives at the temperature range from 100 to 1000 ℃ was studied by means of XRD and...; 关键词：METALLURGY technology RARE earth CONCENTRATE decomposition reaction calcium oxide sodium CHLORIDE

Stepwise Chlorination-Chemical Vapor Transport Reactions for Bastnaesite Concentrate: 《Journal of Rare Earths》2002年第1期56-60,共5页张丽清王军范世华雷鹏翔王之昌; theNationalNaturalScienceFoundationofChina ( 5 98740 0 8); 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 complexes LnAl ...; 关键词：rare earths bastnaesite concentrate chemical vapor transport RE vapor complexes LnAl n Cl 3 n +3

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