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the decomposed procedure of rare earth phosphates, was investigated by X-ray diffraction , electron probe, TG method and chemical analysis. The results show that rare earth phosphates in monazite concentrate... into air in simple form. Key words:rare earths; monazite; carbon reduction; rare earth phosphates; rare earth silicate alloys; [全文内容正在添加中] ......
Development Trend of Rare Earth Standardion Work Zhao Fei1,Zhang Xiuyan1,Ma Jie1,Lin Jirong1 (1.Baotou Research Institute of Rare Earth Applied Technologies, Baotou 014010, China) Abstract:Rare earth standardization was developed along with rare earth industry.In recent decades, great advances have been made in China rare earth industry.This paper describes the status of rare earth......
微色谱柱分离分光光度法连续测定包头稀土精矿中铈组稀土和钍罗明标1,郭国龙1,徐晶晶1,花榕1,孙玉珍1,张麟熹1(1.江西省抚州市东华理工大学化学生物与材料科学学院)摘 要:通过阳离子交换树脂微色谱柱分离,建立了分光光度法连续测定稀土精矿中铈组稀土和钍的方法.含大量稀土元素和钍的1 mol/L HCl试液流经HD-8阳离子交换树脂微色谱柱,钍和稀土同时被保留在树脂上,用1 mol/L HCl淋洗杂质元素,4 mol/L HCl-2 mol/LNH4Cl洗脱液洗脱稀土,然后柱子用200 g/L NH4Cl溶液转型......
:In this paper, the recent advance of processes for treating Baotou mixed-type rare earths concentrate, bastnasite, and ionic adsorption deposit in China was reviewed. The R & D circumstance and new progresses...Development of Rare Earth Hydrometallurgy Technology in China Zhang Guocheng1,Huang Xiaowei1,Xue Xiangxin2,Ying Weijuan1,Li Hongwei1,Long Zhiqi1 (1.General Research Institute for Non-Ferrous Metals......
Electrical Properties and Microwave Synthesis of Mixed Rare Earth Oxide Ln0.7Sr0.3-xCaxCo0.9Fe0.1O3-δ Tang Nailing1,Liu Sha2,Gao Wenyuan2,Liu Yang1,Sun Juncai2,Li Changmin1 (1.Department... to lower the raw materials cost and develop a novel cathode materials for intermediate temperature solid oxide fuel cell(ITSOFC), using mixed rare earth replacing the expensive pure La2O3 as the raw......
Preparing Process of Cerium Acetate and Rare Earth Acetate Hao Xianku1,Xu Yanhui1,Qiao Jun1,Zhang Jun1,Ma Ying1,Chang Shu1 (1.Baotou Research Institute of Rare Earth, Baotou 014010, China... acetate were discussed.The crystalline cerium acetate and rare earth acetate such as ( La, Ce, Pr, Nd) (Ac) 3, ( Ce, Pr, Nd) (Ac) 3, ( Pr, Nd, Er,Y) (Ac) 3 and yttrium acetate were prepared under......
, which was mixed with base nucleus solution,where deposition/attachment reaction took place and rare earth was adhered onto the surface of base nucleus, hence yielding a new rare earth encapsulated...Research on Rare Earth Encapsulated Luminescent Material Yu Zhiwei1,Qi Xiaopeng1,LIU Chengdong1 (1.Material Science and Engineering Department, East China Institute of Technology Fuzhou, Jiangxi......
Preparation of Nanocrystalline Rare Earth Mixed Oxides DyFexCo1-xO3-δ and Its Conductivity 刘二保1,王建英1,任引哲1 (1.Department of Chemistry, Shanxi Normal University, Linfen 041004, China) Abstract:Nanocrystalline rare earth mixed oxides DyFexCo1-xO3-δ were prepared by sol-gel method and characterized by X-ray diffraction (XRD), thermogravimetric analysis (TG-DTA) and scanning electron microscope......
Decomposition reaction kinetics of Baotou RE concentrate with concentrated sulfuric acid at low temperatureWANG Xiuyana, LIU Jiemina, LI Meib, FAN Huilia, and YANG Qishana a Department of Chemistry...="ChDivSummary" name="ChDivSummary">Baotou RE concentrate was decomposed with concentrated sulfuric acid by controlling the roasting temperature below 500°C.Thermogravimetry-differential thermal analysis(TG......
) Abstract:Mixed rare earth elements were incorporated into alumina ceramic materials. Hot-pressing was used to fabricate alumina matrix composites in nitrogen atmosphere protection. Microstructures... were improved evidently. Besides mixed rare earth elements acting as a toughening phase, AlTiC master alloys were also added in as sintering assistants, which could prompt the formation of transient......
