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University, Changsha 410083, China;2.School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China) Abstract: The reduction mechanism of Cr3+ in chloride/ N, N.... The results show that Cr3+ gets three electrons in two steps, the first step is nonreversible, while the second step is quasi-reversible, and the trivalent Cr3+ does not undergo chemical transformation......
Engineering,University of Science and Technology Beijing,Beijing 100083,China摘 要:Carbothermal reduction was performed at temperatures up to 1600°C for vanadium-bearing titanomagnetite,ilmenite concentrate,and high titania slag.The possibility of selective carbothermal reduction was discussed in detail from the viewpoint of thermodynamics,and also......
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A new double reduction method for slope stability analysisBAI Bing(白冰), YUAN Wei(袁维), LI Xiao-chun(李小春)(State Key Laboratory of Geomechanics and Geotechnical Engineering(Institute of Rock and Soil Mechanics, Chinese Academy of Sciences), Wuhan 430071, China)Abstract:The core of strength reduction method (SRM) involves finding a critical strength curve that happens to make the slope globally fail......
Densification mechanism of chemical vapor infiltration technology for carbon/carbon composites CHEN Jian-xun(陈建勋), XIONG Xiang(熊 翔), HUANG Qi-zhong(黄启忠), YI Mao-zhong(易茂中), HUANG Bai-yun(黄伯云... chemical vapor infiltration(CVI) technology with propane (C3H6) as the carbon precursor gas and nitrogen (N2) as the carrier gas. The chemical process of deposition of pyrolytic carbon was deduced......
="ChDivSummary">Three Pd/CeO2 catalysts were,respectively,prepared by reduction–deposition and impregnation method(IMP)to investigate the effect of chemical state of Pd on CO oxidation.Two kinds of surface Pd...CO catalytic oxidation over Pd/CeO2 with different chemical states of PdGuo-Feng Zhou1,Jian Ma2,Shan Bai3,Li Wang2,Yun Guo21. School of Mechanical Engineering, Shanghai Jiao Tong University2......
原法生产超纯硅化学反应机理及工业实践经验[J]. 稀有金属, 1987, 11(6): 421-426.SHEN Hua-sheng. Reduction of SiHCl3 hydrogen production of ultra pure silicon chemical reaction mechanism and industrial practice experience[J... analysis of SiHCl3 hydrogen reduction process[J]. Chemical Engineering, 2011, 39(11): 39-43. [10] 李国栋, 张秀玲, 胡仰栋. 电子级多晶硅生产工艺的热力学分析[J]. 过程控制学报, 2007, 7(3): 520-525.LI Guo-dong, ZHANG Xiu-lin, HU Yang......
Reduction of Low-grade Manganese Dioxide Ore Pellets by Biomass Wheat StalkHonglei ZHANG1,Guocai ZHU2,Hong YAN1,Yuna ZHAO2,Tiancheng LI2,Xiujuan FENG21. College of Life Science and Bio-engineering... dioxide ore pellets was carried out by using wheat stalk as reductant. The main impact factors of reduction percent such as particle size, biomass/ore ratio, heating rate, nitrogen flow rate......
号: TF111.132 文献标识码: A Preparation of powdered-tellurium by reduction from sulfuric acid solution MA Yu-tian1, 2, GONG Zhu-qing1, CHEN Wen-mi1, LI Hong-xu3, YANG Zheng-hui1 , HUANG Jian1 (1... and SEM indicate that the powdered-tellurium is crystalline with needle form. Key words: powdered-tellurium; sulfur dioxide; reduction 碲属稀散元素, 其丰度几乎是所有金属及非金属中最小的. 碲的用途十分广泛, 冶金, 橡胶, 石油, 电......
