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J. Cent. South Univ. Technol. (2011) 18: 1063-1067 DOI: 10.1007/s11771-011-0804-5 Hydrogen permeability of slags containing calcium fluoride DONG Yan-wu(董艳伍)1, 2, JIANG Zhou-hua(姜周华)1, LIANG Lian... South University Press and Springer-Verlag Berlin Heidelberg 2011 Abstract: To investigate the hydrogen permeability of calcium fluoride used for electroslag remelting (ESR) process, "Gas-slag- metal......
Thermodynamic Stability of Sulfate Ions on Calcium Aluminosilicate Hydrate Microstructure胡晨光1,2,DING Qingjun3,FENG Xiaoxin11. College of Materials Science and Engineering,North China University... 要:The thermodynamic stability of sulfate ions on synthesized calcium aluminosilicate hydrate(C-A-S-H) microstructure with different Ca/Si ratios and Al/Si......
–] (16) [Cr]T=[CrO42–]+[HCrO4–]+[H2CrO4]+2×[Cr2O72–] (17) Table 1 Gibbs free energy of vanadium ions, calcium ions, or compounds at 25 °C [23, 24] Table 2 Reaction equation and their equilibrium... J. Cent. South Univ. (2018) 25: 2349-2359 DOI: https://doi.org/10.1007/s11771-018-3919-0 Safe utilization of chromium-bearing vanadate residue by recovery of vanadium and chromium based on calcium......
previously [18]. The obtained CaCO3 was rosette-like aggregate. This morphology formation was suggested to be due to the strong interactions between carboxyl groups on alginate molecules and calcium ions...J. Cent. South Univ. (2012) 19: 1802-1807 DOI: 10.1007/s11771-012-1211-2 Crystallization of calcium carbonate in hydrogels in presence of meso-tetrakis (4-hydroxylphenyl) porphyrin ZHANG Feng-ju(张凤菊......
Preparation of MnO2 and calcium silicate hydrate from electrolytic manganese residue and evaluation of adsorption propertiesLI Chang-xin(李昌新), ZHONG Hong(钟宏), WANG Shuai(王帅), XUE Jian-rong(薛建荣), WU... byproduct resulting from the electrolytic manganese industry, was used as a cheap and abundant chemical source for preparing MnO2 and EMR-made calcium silicate hydrate (EMR-CSH). The MnO2 is successfully......
. Here, K2SO4 solution with different concentrations was investigated as titrant to precipitate the calcium ions. The morphologies of obtained gypsum crystal at different initial concentrations... that volume of the reaction system will be enlarged to a large extent if K2SO4 solution is taken as the precipitating agent of the calcium ions. So, it was decided to use K2SO4 in the form of solid......
Optimization of operation conditions for extracting lithium ions from calcium chloride-type oil field brineHong-jun Yang1,2), Qing-hai Li1,2), Bing Li1), Feng-qin Guo3), Qing-fen Meng1), and Wu Li1..., Qinghai University, Xining 810016, China摘 要:Al(OH)3 was prepared to extract lithium ions from calcium chloride-type oil field brine. The influences of four......
and Ca-Mo-H2O at 25 ℃ [16, 18] The equilibria of total dissolved molybdenum- containing ions concentration, total dissolved calcium-containing ions concentration and total dissolved carbon-containing... Thermodynamic analysis on sodium carbonate decomposition of calcium molybdenum XIA Wen-tang(夏文堂), ZHAO Zhong-wei(赵中伟), LI Hong-gui(李洪桂) School of Metallurgical Science and Engineering, Central......
Preparation and mechanism of calcium phosphate coatings on chemical modified carbon fibers by biomineralization HUANG Su-ping(黄苏萍), ZHOU Ke-chao(周科朝), LI Zhi-you(李志友) State Key Laboratory... and biomineralization processes were applied. The phase components, morphologies, and possible growth mechanism of calcium phosphate were studied by infrared spectroscopy(IR), X-ray diffractometry(XRD) and scanning......
, 19–21]. It is commonly believed [22] that this precipitation is generated from calcium ions dissolving out of the cement-based materials and carbonate ions from aqueous solution. Most studies... to the reaction between the calcium ions that are in the cement-based materials and the available bicarbonates and carbonates, the initial concentration of Ca2+ is one to the most important factors......
