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Non-isothermal reduction kinetics of titanomagnetite by hydrogen
  • 期刊名称：International Jounrnal of Minerals, Metallurgy, an
  • 时间：2013
  • 页码：1134-1140
  • 分类：TQ031[化学工程] TF046.6[冶金工程—冶金物理化学]
  • 作者机构：[1]State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China., [2]School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China.
  • 相关基金：Acknowledgements The authors would like to acknowledge financialsupport from the National Natural Science Foundation of China （No. 11220158） and the Fundamental Research Funds for the Central Universities （FRF-TP-13-002A）.
  • 相关项目：冶金熔体的物理化学性质与组元的微观结构和粒子相互作用的关系
作者： Jie Dang|Guo-Hua Zhang|Xiao-Jun Hu|Kuo-Chih Chou|
关键词： 还原动力学, 非等温条件, 钛磁铁矿, 氢分压, 反应机理, 速率控制步骤, 表观活化能, TTM, titanomagnetite, ore reduction, hydrogen, reaction kinetics
中文摘要：

titanomagnetite (TTM ) 的减小由 H2-Ar 煤气的混合物搽粉被使用一个 thermogravimetric 分析系统在一个非等温的条件下面调查。经由双反应的机制继续了，被发现 TTM 的那非等温的减小。第一反应是到 w 的 TTM 的减小 ???  ??? 吗？？

英文摘要：

Reduction of titanomagnetite （TTM） powders by H2-Ar gas mixtures was investigated under a non-isothermal condition by using a thermogravimetric analysis system. It was found that non-isothermal reduction of TTM proceeded via a dual-reaction mechanism. The first reaction was reduction of TTM to wustite and ilmenite, whereas the second one was reduction of wiistite and ilmenite to iron and titanium dioxide. By using a new model for the dual reactions, which was in an analytical form and incorporated different variables, such as time, temperature, particle size, and hydrogen partial pressure, rate-controlling steps for the dual reactions were obtained with the apparent activation energies calculated to be 90-98 and 115-132 kJ/mol for the first and second reactions, respectively.

同期刊论文项目
冶金熔体的物理化学性质与组元的微观结构和粒子相互作用的关系
期刊论文 63 会议论文 5
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