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its best activity toward oxygen reduction. References [1] WASMUS S, KUVER A, Methanol oxidation and direct methanol fuel cells: A selective review [J]. J Electroanal Chem 1999, 461: 14-31. [2] MC NICOL B D, RAND D A J, WISSIAMS K R. Direct methanol-air fuel cells for road transportation [J]. J Power Sources, 1999, 83: 15-31. [3] KINOSHITA K. Particle size effects for oxygen reduction......
a pressure; 2) calcination of the pellets at elevated temperatures; 3) reduction of TiO2 by calcium with an indirect contact method, i.e. no direct contact of TiO2 with reducing agent (calcium shots... because the surface of the pellets contacting with the reactor is small and there is no direct contact of pellets with reducing agent. As compared to the conventional metallothermic reduction process......
钒钛磁铁矿转底炉直接还原工程化技术研究吴秋廷1(1.四川省攀枝花市攀钢集团设计研究院有限公司)摘 要:在分析不同设备类型的钒钛磁铁矿直接还原工艺的基础上,结合转底炉直接还原实验室研究和工业试验结果,设计了一台年处理10万t钒钛磁铁矿的直接还原转底炉,重点分析了转底炉布料,出料和供热燃烧等关键环节的工程化措施,同时指出了转底炉存在的缺陷和改进的方向.关键词:钒钛磁铁矿; 直接还原; 转底炉; 工程化设计......
gradually increases.Key words:laterite nickel ore; dynamics; thermal analysis; direct reduction...程可分为3个阶段,第一阶段的控速环节是化学反应,预焙烧和未焙烧红土镍矿的活化能分别为90.21和63.12 kJ/mol;第二阶段和第三阶段控速环节是扩散,红土镍矿的活化能逐渐增大.关键词:红土镍矿;动力学;热分析;直接还原Dehydration mechanism and reduction process dynamics of laterite nickel oreZHANG......
drained aluminum reduction cell LI Xiang-peng(李相鹏)1, 2, LI Jie(李劼)2, LAI Yan-qing(赖延清)2, CHEN Jiang(陈江)1, GAO Zeng-liang(高增梁)1, LIU Ye-xiang(刘业翔)2 1. College of Mechanical Engineering, Zhejiang...; Abstract: Current distribution in a drained aluminum reduction cell is critical due to its influence on the current efficiency, electrolysis stability, anodes and cathodes integrity. A finite......
-reduced pellets’ temperature rising behavior and direct reduction by coal in microwave field HUANG Zhu-cheng1, WU Kai1, HU Bin1, L? Li-li1, JIANG Tao1, PENG Hu2 (1. School... pellets was studied, and the effects of the reductive degree on the behaviors of direct reduction and the reduction behavior of the iron oxides by microwave heating were investigated. The results show......
Trans. Nonferrous Met. Soc. China 25(2015) 1325-1333 Behaviors of vanadium and chromium in coal-based direct reduction of high-chromium vanadium-bearing titanomagnetite concentrates followed...·Cr2O3 during coal-based direct reduction have a decisive impact on the efficient utilization of high-chromium vanadium-bearing titanomagnetite concentrates. The effects of molar ratio of C to Fe n(C)/n(Fe......
)03-0497-09 Mineralogical characteristics of direct reduction titanium slag at Panzhihua WANG Yijie1, 2, XUE Yazhou2, PAN Mao1, WEN Shuming3 (1. School of Earth and Space Sciences, Peking University... of Science and Technology, Kunming 650093, China) Abstract: The mineralogical characteristics of direct reduction titanium slag(DRTS) originated from Panzhihua, China were studied by numerous analysis......
现有主要炼铁工艺的优缺点和研发方向周渝生1,钱晖1,张友平1,李肇毅1,范建峰1(1.上海市宝山钢铁股份有限公司研究院)摘 要:对现有主要炼铁工艺的优缺点和研发的方向做了简要评述.讨论了中国炼铁工艺的差距和努力方向.在今后相当长时期内大型高炉流程仍将是主要产铁设备,高炉流程优化的目标是用足设计炉顶压力,进一步降低能耗,应通过开发以煤代焦的新技术,将大型高炉的入炉焦比降低到200 kg/t以下,节省焦炭等优质资源,改善环保.降低铁水成本,减少污染物排放量,实现炼焦厂,烧结厂的清洁生产,建设生态型钢铁企业.直接还原......
-fiber ultrafiltration membrane and its cleaning efficiency by streaming potential and flux method QIU Yun-ren(邱运仁), MIAO Chang(缪 畅), YE Hong-qi(叶红齐) (School of Chemistry and Chemical Engineering... membrane can be completely recovered by cleaning with the mass fraction of 0.8% EDTA at pH=10. Key words: hollow fiber membrane; polysulfone; ultrafiltration; streaming potential; cleaning  ......