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Simulation of the flow field in an iron ore pelletizing kiln

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Abstract

The flow field in a rotary kiln, used in an iron ore pelletizing process, was investigated using a three-dimensional computational fluid dynamics model. The model is isothermal, downscaled and simplified. The objective was to examine the possibility of capturing the unsteady motion of the flame seen in the real kiln. The results from the simulations were compared with recorded images of the real process. The results demonstrate the possibility of quickly getting an overview of the flow field in the kiln. The main, unsteady behavior of the flame was captured. The model may be used as a tool in the ongoing work of improving and optimizing the pelletizing process.

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References

  • ANSYS Inc., 2015, “ANSYS CFX-Solver Theory Guide,” Release 16.0, ANSYS Inc., Canonsburg, PA.

    Google Scholar 

  • Burström, P., Antos, D., Lundström, T.S., and Marjavaara, B.D., 2015, “A CFDbased evaluation of selective noncatalytic reduction of nitric oxide in iron ore grate-kiln plants,” Prog. Comput. Fluid Dynam. Int. J., Vol. 15, No. 1, pp. 32–46, https://doi.org/10.1504/pcfd.2015.067327.

    Article  Google Scholar 

  • Burström, P., Lundström, T.S., Marjavaara, B.D., and Töyrä, S., 2010, “CFD-modelling of selective non-catalytic reduction of NOx in grate-kiln plants,” Prog. Comput. Fluid Dynam. Int. J., Vol. 10, No. 5/6, pp. 284–291, https://doi.org/10.1504/pcfd.2010.035361.

    Article  Google Scholar 

  • Curtet, R., 1958, “Confined jets and recirculation phenomena with cold air,” Combustion and Flame, Vol. 2, No. 4, pp. 383–411, https://doi.org/10.1016/0010-2180(58)90032-4.

    Article  Google Scholar 

  • Granström, R., 2012, “Modelling the Aerodynamics of Iron Ore Pelletizing Kilns,” Licentiate thesis, Luleå University of Technology.

    Google Scholar 

  • Hunt, J.C.R., Wray, A.A., and Moin, P., 1988, “Eddies, Stream, and Convergence Zones in Turbulent Flows,” Tech. Rep. CTR-S88, Center for Turbulence Research, Stanford University and NASA.

    Google Scholar 

  • Larsson, I.A.S., Granström, B.R., Lundström, T.S., and Marjavaara, B.D., 2012, “PIV analysis of merging flow in a simplified model of a rotary kiln,” Experiments in Fluids, Vol. 53, No. 2, pp. 545–560, https://doi.org/10.1007/s00348-012-1309-1.

    Article  Google Scholar 

  • Larsson, I.A.S., Johansson, S.P.A., Lundström, T.S., and Marjavaara, B.D., 2015a, “PIV/PLIF experiments of jet mixing in a model of a rotary kiln,” Experiments in Fluids, Vol. 56, No. 5, pp. 111(12), https://doi.org/10.1007/s00348-015-1984-9.

    Article  Google Scholar 

  • Larsson, I.A.S., Lindmark, E.M., Lundström, T.S., and Nathan, T.S., 2011, “Secondary flow in semi-circular ducts,” Journal of Fluids Engineering, Vol. 133, pp. 101206(8); https://doi.org/10.1115/1.4004991.

    Article  Google Scholar 

  • Larsson, I.A.S., Lundström, T.S., and Marjavaara, B.D., 2015a, “Calculation of kiln aerodynamics with two RANS turbulence models and by DDES,” Flow, Turbulence and Combustion, Vol. 94, No. 4, pp. 859–878, https://doi.org/10.1007/s10494-015-9602-8.

    Article  Google Scholar 

  • Larsson, I.A.S., Lundström, T.S., and Marjavaara, B.D., 2015b, “The flow field in a virtual model of a rotary kiln as a function of inlet geometry and momentum flux ratio,” Journal of Fluids Engineering, Vol. 137, No. 10, pp. 101102(11), https://doi.org/10.1115/1.4030536.

    Google Scholar 

  • Mullinger, P., and Jenkins, B., 2008, Industrial and Process Furnaces: Principles, Design and Operation, 1st Edition, Butterworth-Heinemann, Oxford, UK.

    Google Scholar 

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Correspondence to I. A. S. Larsson.

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Paper number MMP-16-008.

Discussion of this peer-reviewed and approved paper is invited and must be submitted to SME Publications Dept. prior to Feb. 28, 2017.

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Larsson, I.A.S., Marjavaara, B.D. & Lundström, T.S. Simulation of the flow field in an iron ore pelletizing kiln. Mining, Metallurgy & Exploration 33, 144–148 (2016). https://doi.org/10.19150/mmp.6751

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  • DOI: https://doi.org/10.19150/mmp.6751

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