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the reaction between the flotation reagents and pyrrhotite, the contact angles were measured. The measured contact angle values at the hexagonal and monoclinic pyrrhotite surfaces in deionised distilled... [15-16] demonstrated that copper activation is not possible since copper is essentially insoluble above pH 8 and thus not available for reaction at the pyrrhotite surface. In contrast, the contact angle......
J. Cent. South Univ. Technol. (2007)03-0374-06 DOI: 10.1007/s11771-007-0074-4 Thermal contact conductance...; Abstract: The effects of surface roughness, strain rate, friction coefficient and pressure on real contact area were analyzed based on the research of Stupkiewicz. The real contact area......
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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......
Loaded multi-tooth contact analysis and calculation for contact stress of face-gear drive with spur involute pinionTANG Jin-yuan(唐进元), LIU Yan-ping(刘艳平)(State Key Laboratory of High-performance Complex Manufacturing, School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China)Abstract:The analytical method based on "Hertz theory on normal contact of elastic......
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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......