Commenced in January 2007
Paper Count: 30184
Numerical Simulation of Iron Ore Reactor Isobaric and Cooling zone to Investigate Total Carbon Formation in Sponge Iron
Abstract:Isobaric and cooling zone of iron ore reactor have been simulated. In this paper, heat and mass transfer equation are formulated to perform the temperature and concentration of gas and solid phase respectively. Temperature profile for isobaric zone is simulated on the range temperature of 873-1163K while cooling zone is simulated on the range temperature of 733-1139K. The simulation results have a good agreement with the plant data. Total carbon formation in the isobaric zone is only 30% of total carbon contained in the sponge iron product. The formation of Fe3C in isobaric zone reduces metallization degree up to 0.58% whereas reduction of metallization degree in cooling zone up to 1.139%. The decreasing of sponge iron temperature in the isobaric and cooling zone is around 300 K and 600 K respectively.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1081137Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1217
 J. Aguilar, R. Fuentes, and R.Viramontes, "Simulation of iron ore reduction in a fixed bed, " Modelling Simul. Mater. Sci. Eng. vol. 3, pp. 131-147, 1995
 D.R. Parisi, and M.A. Laborde, "Modeling of counter current moving bed gas-solid reactor used in direct reduction of iron ore," Chemical Engineering Journal 104, 2004, pp. 35-43.
 N.S. Srinivasan, "Reduction of iron oxides by carbon in a circulating fluidized bed reactor," Powder Technology, 124, 2002, pp. 28-39.
 Y. Takenaka, Y. Kimura, K. Narita, and D. Kaneko, "Mathematical model of direct reduction shaft furnace and its application to actual operations of a model plant," Computers and Chemical Engineering, Vol. 10, No. 1, pp. 67-75, 1986.
 J. Zhang, and O. Ostrovski, "Cementite formation in CH4-H2-Ar gas mixture and cementite stability," ISIJ International, Vol. 41, 2001, No. 4, pp. 333-339.
 P. S. Pilipenko and V. V. Veselov, "Carburization of metals with methane as a possible method for the low-temperature synthesis of iron, cobalt, and nickel carbides," Powder Metallurgy and Metal Ceramics, Vol. 14, No. 6, June, 1975, pp. 438-441.
 H. J. Grabke, E. M. Muller-Lorenz, and A. Schneider, "Carburization and metal dusting on Iron, " ISIJ International, vol 41, pp. S1-S8, 2001.
 G. Matamala and P. Canete, "Carburization and decarburization kinetics of iron in CH4-H2 mixtures between 1000-1100oC," Material Chemistry and Physics, 12, 1985, pp. 313-319.
 W. Arabczyk, W. Konicki, U. Narkiewicz, I. Jasińska, and K. Ka┼éucki, "Kinetics of the iron carbida formation in the reaction of methane with nanocrystalline iron catalyst," Applied Catalysis A: General 266, 2004, pp. 135-145.
 Y. Lei, N. W. Cant, and D. L. Trim, "Kinetics of the water-gas shift reaction over a rhodium-promoted iron-chromium oxide catalyst, " Chemical Engineering Journal 114, 2005, pp. 81-85.
 M. Motlagh, "Effect of gas flow on simultaneous carburization and reduction of iron ore," Ironmaking Steelmaking, vol. 21, pp. 291-302, 1994.
 G. V. Reklaitis, "Introduction to material and energy balances," John Wiley & Sons, 1st. edition, 1983.
 R. H. Perry and D. W. Green, "Perry-s Chemical Engineer-s Handbook," Mc. Graw-Hill Companies, Inc., 7nd. Edition, 1999.
 J.W. Mellor, "A Comprehensive Treatise on Inorganic and Theoretical Chemistry," vol. XIII, Longmans Green and Co., London, 1957.
 D. S. Newsome, "Water gas shift reaction, " Catalysis reviews, Vol. 21, Issue 2, pp. 275-281, 1980.
 K. Ono, T. Nakamura, and T. Wakabayashi, "Method for cooling high temperature reduced iron, " US. Patent, 4179281, 1979.