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. Open aluminothermic reduction of columbium (Nb) pentoxide and purification of the reduced metal[J]. Matel Trans, 1971, 2: 2817?2823. [4] 何季麟, 张宗国, 徐忠亭. 中国钽铌湿法冶金[J]. 稀有金属材料与工程, 1998, 27(1): 9?14.HE...; electrochemistry; reduction 金属Nb具有熔点高,强度高,耐热,与人体亲和性好,抗腐蚀性强,中子俘获截面低等良好性能.Nb 用途广......
Manganese extraction from high-iron-content manganese oxide ores by selective reduction roasting-acid leaching process using black charcoal as reductantZHANG Yuan-bo(张元波), ZHAO Yi(赵熠), YOU Zhi-xiong(游志雄), DUAN Dao-xian(段道显), LI Guang-hui(李光辉), JIANG Tao(姜涛) (School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China)Abstract:Reduction roasting-acid......
Numerical simulation of current distribution in metal pad of aluminum reduction cells QI Xi-quan(戚喜全), FENG Nai-xiang(冯乃祥), CUI Jian-zhong(崔建忠) (School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China) Abstract: Based on the numerical calculation of 3-D potential distribution in aluminum reduction cells, current distribution in the metal pad is calculated under......
J. Cent. South Univ. Technol. (2009) 16: 0166-0171 DOI: 10.1007/s11771-009-0028-0 Formation mechanism of aerodynamic drag of high-speed train and some reduction measures TIAN Hong-qi(田红旗)1, 2...; Abstract: Aerodynamic drag is proportional to the square of speed. With the increase of the speed of train, aerodynamic drag plays an important role for high-speed train. Thus, the reduction......
Magneli phase titanium sub-oxide conductive ceramic TinO2n-1 as support for electrocatalyst toward oxygen reduction reaction with high activity and stabilityWU Qiu-mei(伍秋美)1, RUAN Jian-ming(阮建明)1..., and Pt/TinO2n-1 composites were prepared by the impregnation-reduction method. The electrochemical stability of TinO2n-1 was investigated and the results show almost no change in the redox region......
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Application of fiber Bragg grating sensor network in aluminum reduction tank shell temperature monitoringJIANG Ming-shun(姜明顺)1,2, SUI Qing-mei(隋青美)1, MIAO Fei(苗飞), Jia Lei(贾磊)1, PENG Peng(彭蓬)2(1... temperature sensor network was designed to implement the real-time health monitoring of the aluminum reduction cell. The heat transfer process was simulated using software ANSYS, and an on-line shell......
Reduction Kinetics of Nickel Sulphide刘中华,刘纯鹏摘 要:<正> Reduction kinetics of Ni3S2 was experimen-tally studied by following the time required forcompletion of the hydrogen reduction reaction inthe presence of calcium oxide.A simple empiricalintegration equation,derived for describing the ef-fect of CaO/S molar ratio,temperature,hydrogenconcentration......
J. Cent. South Univ. Technol. (2010) 17: 765-769 DOI: 10.1007/s11771-010-0554-9 Extraction of valuable metals from low-grade nickeliferous laterite ore by reduction roasting-ammonia leaching method... nickeliferous laterite ore using a reduction roasting-ammonia leaching method. The reduction roasting-ammonia leaching experimental tests were chiefly introduced, by which fine coal was used......
Maintenance decision-making method for manufacturing system based on cost and arithmetic reduction of intensity modelLIU Fan-mao(刘繁茂)1, ZHU Hai-ping(朱海平)2, LIU Bo-xing(刘伯兴)2(1. Hunan Provincial Key... choice of maintenance actions to be performed on a selected group of machines for manufacturing systems. The arithmetic reduction of intensity model was introduced to describe the influence on machine......
