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The effects of kinetic parameters on combustion characteristics in a sintering bed

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  • Pahlevaninezhad, Masoud
  • Davazdah Emami, Mohsen
  • Panjepour, Masoud

Abstract

Coke combustion is the main source of thermal energy for sintering of iron ores particles, and drastically affects the product sinter quality and productivity of the process. In this paper, simulation of coke combustion is performed for case studies comprising various operating parameters and coke sizes to assess the influence the coke combustion characteristics and operating conditions on sinter quality and productivity of the process. The sintering process was simulated with an unsteady-2D axisymmetric model. Effects of kinetic parameters including coke particles size, inlet air velocity, the amount of coke in the sintering charge and limestone particles size on product sinter quality and productivity of sintering process were studied. Simulation results of sintering process for coke sizes of 2 mm and 2.4 mm indicate that large particles size may reduce sinter quality and productivity. Combustion efficiency improves by optimization of the inlet air velocity. Moreover, simulation results for limestone particles size of 2 mm and 1 mm show that by decreasing the limestone particles size, the un-decomposed limestone in the bed may increase and sinter quality declines. Varying the amount of coke shows little change in the sintering time, but considerable change in the product sinter quality and energy consumption.

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  • Pahlevaninezhad, Masoud & Davazdah Emami, Mohsen & Panjepour, Masoud, 2014. "The effects of kinetic parameters on combustion characteristics in a sintering bed," Energy, Elsevier, vol. 73(C), pages 160-176.
    • Handle: RePEc:eee:energy:v:73:y:2014:i:c:p:160-176
    DOI: 10.1016/j.energy.2014.06.003
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    References listed on IDEAS

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    1. Cheng, Zhilong & Tan, Zhoutuo & Guo, Zhigang & Yang, Jian & Wang, Qiuwang, 2020. "Recent progress in sustainable and energy-efficient technologies for sinter production in the iron and steel industry," Renewable and Sustainable Energy Reviews, Elsevier, vol. 131(C).
    2. Wenjie Ni & Haifeng Li & Yingyi Zhang & Zongshu Zou, 2019. "Effects of Fuel Type and Operation Parameters on Combustion and NO x Emission of the Iron Ore Sintering Process," Energies, MDPI, vol. 12(2), pages 1-21, January.
    3. Zhang, Xiao-Hui & Feng, Peng & Xu, Jia-Rui & Feng, Li-Bin & Qing, Shan, 2020. "Numerical research on combining flue gas recirculation sintering and fuel layered distribution sintering in the iron ore sintering process," Energy, Elsevier, vol. 192(C).
    4. Liu, Yan & Yang, Jian & Wang, Jing-yu & Ding, Xu-gang & Cheng, Zhi-long & Wang, Qiu-wang, 2015. "Prediction, parametric analysis and bi-objective optimization of waste heat utilization in sinter cooling bed using evolutionary algorithm," Energy, Elsevier, vol. 90(P1), pages 24-35.
    5. Cheng, Zhilong & Yang, Jian & Zhou, Lang & Liu, Yan & Wang, Qiuwang, 2016. "Characteristics of charcoal combustion and its effects on iron-ore sintering performance," Applied Energy, Elsevier, vol. 161(C), pages 364-374.

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