金属学报  1984, Vol. 20 Issue (5): 375-386

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铁矿石移动床还原数学模型的探讨

谢涌堃;秦民生

北京钢铁学院;北京钢铁学院

A MATHEMATIC MODEL FOR REDUCTION OF IRON ORE IN MOVING BED

XIE Yongkun; QIN Minsheng (Beijing University of Iron and Steel Technology)(Manuscript received 9 January; 1983; revised manuscript 7 February; 1984)

谢涌堃;秦民生. 铁矿石移动床还原数学模型的探讨[J]. 金属学报, 1984, 20(5): 375-386.
, . A MATHEMATIC MODEL FOR REDUCTION OF IRON ORE IN MOVING BED[J]. Acta Metall Sin, 1984, 20(5): 375-386.

摘要 参考文献 相关文章 Metrics 全文: PDF(767 KB)   摘要: 通过对铁矿石还原动力学特性较详细的实验研究,提出了一个移动床还原一维数学模型。模型描述了矿石还原度、气相成分、温度、压力等沿反应器轴向变化的规律。由实验室规模的移动床还原实验证明,此模型能正确反映铁矿石在移动床中的还原过程。实验测定值与模型计算值吻合很好。应用此模型能更正确地说明移动床还原过程的规律性。这对改进高炉和直接还原竖炉的操作及设计反应器均有参考价值。 Abstract：A one-dimensional mathematic model was developed for describing a moving bed reactor in which theiron oxide pellets are reduced to metallic iron with hydrogen and/or CO in a counter-current flow arrangement. The model uses the "three-interface shrinking core model" as the expression of single-pellet reaction kinetics. The model consists of the reaction rate equations of iron oxides and the heat and mass balance equations for both of the gas and the solid streams. The model shows the longitudinal distribution of the process variables such as degree of pellets reduction, and composition, pressure as well as temperature of the gas stream. For the purpose of investigating the reduction process of pellets in a moving bed and checking the correctness of the model, a bench-scale moving bed reactor was established. The experiments were carried out until the steady state was reached. The calculating results based on the model show reasonable agreement with the experimental measuements. The model cart be used for describing an industrial shaft furnace, and shows a difference characteristic between the reduction process of iron ore in a shaft furnace and the reduction process of iron ore under fixed conditions in laboratory. 收稿日期: 1984-05-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 谢涌堃 秦民生 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1984/V20/I5/375 1 Spitzer, R. H. ; Manning, F. S. ; Philbrook, W. O. , Trans. Metall. Soc. AIME, 242 (1968) , 618． 2 Yanagiya, T. ; Yagi, J. ; Omori, Y. , Ironmaking Steelmaking, 6 (1979) , №3, 93． 3 Yagi, J. ; Szekely, J. , Trans. Iron Steel Inst. Jpn, 17 (1977) , 569． 4 鞭巌;森山昭著,冶金反应工程学,蔡志鹏;谢裕生译,科学出版社,1981,p.305． 5 原行明;橋爪利夫;石川英毅;相田晴美著,铁矿石直接还原,张炳怀;应永铭译,科学技术文献出版社重庆分社,1979,p.40． 6 Strassburger, J. H. , Blast Furnace-Theory and Practice, Gordon and Brcach Science Publ. , New York, 1969, p. 857． 7 McKewan, W. M. , Trans. Metall. Soc. AIME, 224 (1962) , 2, 387． 8 Quets, J. M. ; Wadsworth, M. E. ; Lewis, J. R. , Trans. Metall. Soc. AIME, 221 (1961) , 1186． 9 Rao, Y. K. ; Jalan, B. P. , Metall. Trans. , 3 (1972) , 2456． 10 Luiz, Martins, Final Public Oral Examination for the Degree of Doctor of Philosophy, 1981． (未发表). 11 火法冶金过程的物理化学,蒋导江;黄希祜译,高等教育出版社,1958,p.508． 12 秦民生,北京钢铁学院学报,(1981) ,№3,106． 13 McKewan, W. M. , Trans. Metall. Soc. AIME, 218 (1960) , 2． 14 Themelis N. J. ; Gauvin, W. H. , Trans. Metall. Soc. AIME, 227 (1963) , 290． 15 Geiger, G. H. ; Poirier, D. R. , 冶金中的传热传质现象,俞景禄;魏季和译,冶金工业出版社,1981,p.463． 16 Towhidi, N. ; Szekely, J. , Ironmaking Steelmaking, 8 (1981) , 237． 17 Szekely, J. ; Ei-Tawil, Y. , Metall. Trans. , B, 7B (1976) , 490． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed