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of microorganism and dissolution reaction pathway of carrollite in the bioleaching process were investigated. The results showed that both indirect and contact mechanisms influenced the leaching process... that the contact mechanism proceeds through a biooxidation of Fe3+ ions in the EPS layer [6,7,11]. Based on key intermediates and products, two separate reaction pathways for the dissolution of metal......
; Abstract: Electrokinetic and contact angle measurements were used to discuss the interfacial interaction on bio-leaching of pyrite mineral. Surface energy parameters of pyrite mineral and thiobacillus ferrooxidans were obtained by calculating according to formula of Young’s equation and contact angle measurements. The results show that surface energy of thiobacillus......
Trans. Nonferrous Met. Soc. China 28(2018) 1878-1886 Reaction mechanism of roasting Zn2SiO4 using NaOH Xiao-yi SHEN1,2, Hong-mei SHAO3, Hui-min GU1, 2, Bing CHEN1,4, Yu-chun ZHAI1, Pei-hua MA1 1... Received 19 June 2017; accepted 31 October 2017 Abstract: The reaction kinetics of roasting zinc silicate using NaOH was investigated. The orthogonal test was employed to optimize the reaction......
Application of response surface method for contact fatigue reliability analysis of spur gear with consideration of EHLHU Yun(胡贇)1, 2, LIU Shao-jun(刘少军)1, 2, DING Sheng(丁晟)1, 2, LIAO Ya-shi(廖雅诗)1, 2(1...),Changsha 410083, China)Abstract:In order to consider the effects of elastohydrodynamic lubrication (EHL) on contact fatigue reliability of spur gear, an accurate and efficient method that combines......
J. Cent. South Univ. (2019) 26: 2393-2403 DOI: https://doi.org/10.1007/s11771-019-4182-8 Distribution of contact loads in crushed zone between tunnel boring machine disc cutter and rock SHI Yu-peng... determined by the service life of cutting tools, which is the result of contact loads in the crushed zone between cutter ring and rock. In this paper, a series of rock breaking tests were conducted......
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Dehydriding reaction kinetic mechanism of MgH2-Nb2O5 by Chou model LIU Yang(刘 杨)1, LI Qian(李 谦)1, CHOU Kuo-chih(周国治)1, 2 1. Shanghai Key Laboratory of Modern Metallurgy and Materials Processing...; Abstract: Chou model was used to investigate the dehydriding reaction kinetic mechanism of MgH2-Nb2O5 hydrogen storage materials at 573 K. A new conception, "characteristic absorption/desorption......
Finite element analysis of contact fatigue and bending fatigue of a theoretical assembling straight bevel gear pairDENG Song(邓松), HUA Lin(华林), HAN Xing-hui(韩星会), HUANG Song(黄松)(School of Automotive... of a theoretical assembling straight bevel gear pair to analyze the contact fatigue on the tooth surface and the bending fatigue in the tooth root. Based on the cumulative fatigue criterion and the stress-life......
Reaction mechanism of molten NaOH decomposing Zn2SiO4 in willemiteZHAO Chang-ming(赵昌明)1, 2, ZHAI Yu-chun(翟玉春)2, ZHANG Chong-min(张崇民)1, LI Jun-li(李军丽)1, LI Sheng-li(李胜利)1(1. School of Materials... form of Zn2SiO4 in willemite, the chemical precipitation method was used to synthesize Zn2SiO4. Through the orthogonal experimentation, the reaction conditions of melten NaOH decomposing Zn2SiO4 were......