Abstract
The objective of this paper is to optimize the parameters of pellet drying and preheating process in grate. A mathematical model of drying and preheating is developed, and is verified by the experiments. Further, the operating parameters of wind temperature, wind speed, grate speed and bed depth etc. are investigated through the orthogonal method using the simulation results. And a relationship of drying, preheating effects and operating parameters is achieved. The results show that the optimization effect can be achieved in the given range when air velocity is about 3.0 m/s and temperature is about 300, 500, 800, and 1 100 °C in the updraft drying zone, downdraft drying zone, preheating I zone, and preheating II zone respectively. The work is help for saving energy and reducing emissions in pellet induration.
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References
Pan Bao-Ju, Zhang Cheng-Ji. China iron ore agglomeration practical technology [M]. Beijing: Metallurgical Industry Press, 2000 (in Chinese).
Firth A R, Manuel J R. Thermal implications of phase transformations during induration of iron ore pellets produced from hematite [J]. ISIJ International, 2005, 45(11): 1561–1566.
Young R W, Cross M, Gibson R D. Mathematical model of grate-kiln-cooler process used for induration of ire ore pellets [J]. Ironmaking and Steelmaking, 1979, 6(1): 1–13.
Thurlby J A. A dynamic mathematical model of the complete grate/kiln iron-ore pellet induration process [J]. Metallurgical Transactions B, 1988, 19B(1): 103–112.
Thurlby J A. Gas flow and pressure balancing in modelling grate/kiln induration [J]. Metallurgical Transactions B, 1988, 19B(1): 113–121.
Thurlby J A. Energy cost minimization in grate/kiln induration [J]. Metallurgical Transactions B, 1988, 19B(1): 123–132.
Zhang Yu, Feng Jun-xiao, Xu Jing-hai, et al. Energy and exergy analyses of a mixed fuel-fired grate-kiln for iron ore pellet induration [J]. Energy Conversion and Management, 2011, 52(5): 2064–2071.
Barati M. Dynamic simulation of pellet induration process in straight-grate system [J]. International Journal of Minerals Processing, 2008, 89(1–4): 30–39.
Sadrnezhaad S K, Ferdowsi A, Payab H. Mathematical model for a straight grate iron ore pellet induration process of industrial scale [J]. Computational Materials Science, 2008, 44(2): 296–302.
Majumder S, Natekar P V, Runkana V. Virtual Indurator: A tool for simulation of induration of wet iron ore pellets on a moving grate [J]. Computers and Chemical Engineering, 2009, 33(6): 1141–1152.
Zheng Hai-Wei. The research of drying and preheating process in grates [D]. Beijing: School of Mechanical Engineering, University of Science and Technology Beijing, 2007 (in Chinese).
Gao Yun-Yan. Orthogonal and regression experiment design method [M]. Beijing: Metallurgical Industry Press, 1998 (in Chinese).
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Foundation item: the National High Technology Research and Development Program (863) of China (No. 2007AA05Z215)
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Feng, Jx., Zhang, Y., Zheng, Hw. et al. Optimization of pellet production process parameters in grate using simulation results. J. Shanghai Jiaotong Univ. (Sci.) 16, 219–223 (2011). https://doi.org/10.1007/s12204-011-1125-4
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DOI: https://doi.org/10.1007/s12204-011-1125-4