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J. Cent. South Univ. (2016) 23: 2214-2222 DOI: 10.1007/s11771-016-3279-6 Germanium separation and purification by leaching and precipitation Saeid Bayat, Sajjad Aghazadeh, Mohammad Noaparast, Mahdi... efficiencies were 88.71% and 8%, respectively. Leaching tests with sulfuric acid (added di-ammonium oxalate monohydrate) and hydrochloric acid (HCl) on the residues obtained from previous-stage......
applications. However, control of particle size is still a challenge in materials synthesis. Therefore, continuous precipitation of cerium oxalate (precursor of ceria) was carded out at different operational... the experimental phenomena in terms of agglomeration, disrupt,and precipitation kinetics. Key words:cerium oxalate; continuous precipitation; large particle; particle size distribution; morphology; rare earths......
J. Cent. South Univ. (2020) 27: 772-779 DOI: https://doi.org/10.1007/s11771-020-4330-1 Effect of oxalate on seed precipitation of gibbsite from sodium aluminate solution YU Hai-yan(于海燕)1, 2, ZHANG... performance and kinetics of gibbsite from sodium aluminate solution with different sodium oxalate concentrations as well as the corresponding influence mechanism of oxalate during the seed precipitation......
was synthesized directly from solution of industrial YCl3 by method of oxalate precipitation through super-micro-reactors made by complex non-ionic surfactant. The purity and diameter of Y2O3 particles... and 0.031~0.112 mol·L-1 respectively, while the mass fraction range of oxalic acid is 10%~18%. The purity of Y2O3 nano-powder tested by ICP-AES analysis is 99.99%. Key words:oxalate precipitation method......
liquor. Experimental results show that the optimum cobalt oxalate precipitation conditions are temperation 50 ℃, terminal pH 1.5, n(C2O42-):n(Co2+)=1.15:1. Overall, this hydrometallurgical process... precipitation; P507; cobalt oxalate 锂离子电池自1990年实现商业化以来,因具有能量密度大,寿命长且无记忆性等诸多优点,被广泛应用于移动电话,笔记本电脑和照相机等便携式电子设备中.据统计,2000年全球锂离子电池生产量达5亿只,预计2010年产量将超过46亿只[1].锂离子电池寿命通常在500~1 000次之间,使用几百次(通常是2~3 a)以后,电极膨胀,容量下降,以至报废.废旧......
on the properties of the final products. ZHAN et al[19] have reported the thermo- dynamic analysis on the preparation of fibrous NiO precursor powders with oxalate precipitation process. But until now... Tie-jing, WU Jian-hui. Thermodynamic analysis on preparation of fibrous NiO precursor powders with oxalate precipitation process [J]. Trans Nonferrous Met Soc China, 2005, 15(4): 926-930. [20] DEAN J......
Preparation of large particle rare earth oxides by precipitation with oxalic acid WANG Mitang1,LI Mei1,SHI Zhenxue1,LIU Zhaogang1,HU Yanhong1 (1.School of Materials and Metallurgy, Inner Mongolia... such as stirring velocity, precipitation temperature, feeding speed, aging time, precipitation method, and calcination temperature on particle size and loose density of CeO2 were studied. Under the particular......
solution under the optimum condition. Moreover, oxalate was explored as a precipitation stripping agent for BiCl3·xTBP (x=2 or 3) complexes, by which Bi(III) was stripped in the form of Bi2(C2O4)3... the precipitation reaction, the mixtures solution allowed to settle until three distinct phases were noticeable (solid bismuth oxalate, aqueous precipitating solution, and stripped organic solution......
; 文献标志码:A 文章编号:1672-7207(2011)09-2558-05 Oxidation of oxalic acid by chlorine in mother-liquor originated from precipitation of cobalt oxalate TIAN Qing-hua1, 2, YI Yu1, GUO Xue-yi1 (1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China; 2. Postdoctoral Ambulatory Station......
is still a challenge in materials synthesis.Therefore,continuous precipitation of cerium oxalate(precursor of ceria) was carried out at different operational conditions such as reactant concentration...Cerium dioxide with large particle size prepared by continuous precipitation李梅,王觅堂,柳召刚,胡艳宏,吴锦绣School of Material and Metallurgy,Inner Mongolia University of Science and Technology摘 要: