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. The precursor powders were prepared by 0.1 mol/L YCl3 solution and 0.1 mol/L hydrochloric acid in the presence of 1% surfactant PEG2000, which was dried via an ethanol azeotropic distillation method...Preparation of nanoscaled yttrium oxide by citrate precipitation method陈金清1,黄彬1,2,黄超1,2,孙晓琦21. School of Metallurgy and Chemical Engineering,Jiangxi University of Science & Technology2. Xiamen......
. The precursor powders were prepared by 0.1 mol/L YCl3 solution and 0.1 mol/L hydrochloric acid in the presence of 1% surfactant PEG2000, which was dried via an ethanol azeotropic distillation method...Preparation of nanoscaled yttrium oxide by citrate precipitation method陈金清1,黄彬1,2,黄超1,2,孙晓琦21. School of Metallurgy and Chemical Engineering,Jiangxi University of Science & Technology2. Xiamen......
; 文章编号:1672-7207(2011)09-2584-05 Removal of lead from Pb-Pt-Pd alloy by vacuum distillation YANG Chun-yu, QIU Ke-qiang, LIN De-qiang (School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China) Abstract: Vacuum distillation for separation of Pb from Pb-Pt-Pd alloy was investigated. The effects of temperature, distillation time......
Purification of indium by vacuum distillation and its analysisLI Dong-sheng(李冬生)1,2,3, DAI Yong-nian(戴永年)1,2,3, YANG Bin(杨斌)1,2,3, LIU Da-chun(刘大春) 1,2,3, DENG Yong(邓勇) 1,2,3(1. National...% or 5N, mass fraction) indium (In) was obtained through vacuum distillation using a 2N (99%) In as input material under a dynamic vacuum of 5 Pa. The glow discharge mass spectrometry (GDMS) was applied......
in multiple steps including vacuum distillation,magnetic separation,oxidizing roasting,and solidstate reaction.The optimal technological conditions of vacuum distillation and oxidizing roasting were... experimental method was adopted.The maximum saturation magnetization(62.6 mAám2ág-1)of the synthesized strontium ferrite powders was achieved at the Fe2O3/SrCO3mol ratio of 6,5 h milling time,1250°C......
Vacuum distillation refining of metallurgical grade silicon (Ⅱ)--Kinetics on removal of phosphorus from metallurgical grade silicon MA Wen-hui(马文会)1, 2, WEI Kui-xian(魏奎先)1, 2, YANG Bin(杨 斌)1, 2... at different temperatures. The behaviors of impurity phosphorus in the vacuum distillation process were examined in detail. The results show that the fractional vacuum distillation should be taken to obtain......
and continuous distillation. The experimental results show a high Sb3+concentration, 489.2 g/L, in the leaching solution for two-stage countercurrent leaching process, and the leaching rates of Sb, Cu, Bi more... distillate and exists as amorphous hydrated silica. By the continuous distillation, high pure SbCl3 could be prepared, and AsCl3 is enriched in the distillate while metals Bi, Cu are enriched in the continuous......
Pretreatment of lead anode slime with low silver by vacuum distillation for concentrating silverLI Liang(李亮)1,2,3, TIAN Yang(田阳)1,2, LIU Da-chun(刘大春)1,2,3, ZHOU Hou-jun(周厚军)1,2, DAI Yong-nian(戴永年... of separation of lead anode slime with low silver by vacuum distillation was analyzed theoretically. The volatilization rates and mass fractions of elements, influenced by distillation temperature, heat......
共沸蒸馏法制备超细氧化铝粉体及其表征 江祖成1,胡斌1,杜平武1,彭天右1 (1.武汉大学化学与环境科学学院化学系,武汉430072) 摘要:用改进的溶胶-凝胶法(sol-gel)制备了单分散纳米级Al2 O3粉体,研究了不同干燥方法对产品粒子性能的影响.结果表明,共沸蒸馏法能够有效地对氢氧化铝凝胶脱水,防止了硬团聚体的形成.在1150℃的温度下煅烧,可制得尺寸分布均匀,呈球形的α-Al2 O3超细粉体,其平均粒径为68nm.以透射电镜(TEM), X射线衍射( XRD),热重(TG),差热(DTA),比表面测定(BET)等手段对所得的超细Al2 O3粉体进行了表征. 关键词:溶胶-凝胶法; A12 O3粉体; 共沸蒸馏; 团聚体; sol-gel method; nanoscale alumina; heterogeneous azeotropic distillation......
of Platinum Metals,Sino-Platinum Metals Resources (Yimen) Co.Ltd.摘 要:This paper presents a new method of determining Ge in AuGe alloys by potassium iodate(KIO3)potentiometric titration when Ge(Ⅱ) and Au(0) are simultaneously reduced from Ge(IV) and Au(Ⅲ) by sodium hypophosphite rather than by distillation separation.The influences of such conditions......