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for the extraction of rare earths (cerium and yttrium) from the sulfate leach liquor using 8,9-dihydro[1,2,4]triazolo[1,5-a]quinazolin-6(7H)-one {TQ} dissolved in methylene chloride. Stripping was carried out by 20% sodium hydroxide. A rare earth cake was produced by oxalic acid precipitation. Its purity reached 87.3%. Key words:triazolopyrimidine; extraction; stripping; precipitation; rare earths; [全文内容正在添加中] ......
Surface ζ potential and photocatalytic activity of rare earths doped TiO2宋绵新,边亮,周天亮,赵效勇摘 要:The iso-electric point of different rare earths (La, Ce, Y) doped anatase TiO2 was set out, and three organisms with different sur- face electrical properties (methylene blue trihydrate-positive electricity, methyl orange-negative electricity, methyl red-neutral......
Investigations on luminescence of rare earths doped CaTiO3:Pr3+ phosphorB.S. Panigrahi22. Technical Services Division, Indira Gandhi Centre for Atomic Research, Kalpakkam-603 102, India摘 要:rare earths on photoluminescence as well as afterglow intensity was reported. Presence of gadolinium enhanced......
Investigations on luminescence of rare earths doped CaTiO3:Pr3+ phosphorB.S. Panigrahi22. Technical Services Division, Indira Gandhi Centre for Atomic Research, Kalpakkam-603 102, India摘 要:rare earths on photoluminescence as well as afterglow intensity was reported. Presence of gadolinium enhanced......
Porter, the well-known economist,based on the analysis, the author puts forward a strategic proposal to raise the competitive power. Key words:industry; diamond framework; competitive power; rare earths...Study on Competitive Power of Rare Earth Industry in China Li Guoping1,Qian Jiuhong2 (1.School of Government, Peking University, Beijing 100871, China;2.Institute of Science and Technology......
words:phosphorus ore; calcination-digestion-desliming; separation; rare earths; [全文内容正在添加中] ...Calcination-Digestion-Desliming of Phosphorus Ore Bearing Rare Earth Wang Jing1,Zhang Qin1,Zhang Jie1,Qiu Yue qin1 (1.Guizhou University of Technology, Guiyang 550003, China) Abstract......
Behaviour of Rare Earths in Solid Solution in Steel林勤,叶文,杜垣胜,余宗森摘 要:<正> The contents of rare earth metals(REM) insolid solution in 16 Mn steel were determined bymeans of inductive coupling plasma (ICP)spectroscopy.The amount of REM in solid solutionis only a few ppm in the steel with MnS inclusions,which rises slightly with the increasing......
. Furthermore, the development trends of flotation reagents of rare earth minerals were discussed. Key words:mineral dressing engineering; flotation reagents; flotation; rare earths; [全文内容正在添加中] ...Progress of Flotation Reagents of Rare Earth Minerals in China 王文梅1,任俊2,周高云3,罗家柯3,唐芳琼2 (1.Civil and Environment Engineering College, University of Science and Technology Beijing, Beijing 100083......
Effect of rare earths on phase transformation in as-cast ZA27 alloy dur-ing compressive creepWEI Xiaowei and SHEN Baoluo1) Department of Applied Physics, University of Electronic Science... 610065, China摘 要:<正> The effect of the mixed rare earths of Ce on the phase transformation in as cast ZA27 alloy during compressive creep......
Extraction Behavior of Rare Earths with 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 Using Solid-liquid Extraction Technique高锦章,潘仲巍,杜新贞,康敬万,白光弼摘 要:<正> The extraction behavior of rare earths was studied by using paraffin with ceresin as a diluent containing1-phenyl-3-methyl-4-benzoyl-pyrazolone-5.In solid phase,the composition of complexes is REP3.The......