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A Study of Scrap Heating By Burners. Part I: Experiments

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Abstract

A furnace, approximately 1 m3 in capacity, was built to measure the efficiency of heat transfer from a propane-oxygen burner to different types of industrial steel scrap. Supplementary measurements were undertaken to measure the scrap density, size, and void fraction to insure complete combustion of the propane and to measure the extent of scrap oxidation. Local values of temperature in the scrap bed were measured along with the exit temperature of the off gas. The off gas temperature was a direct measurement of the overall efficiency of heating. It was found that smaller and denser scrap was heated more effectively. Configurations that increased the path length of the gas also increased the efficiency of heating. In Part II, a mathematical model is developed to compare with the measured temperatures.

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Acknowledgments

Assistance from Dr. Diancai Guo in the initial stages of the work is gratefully acknowledged. The authors would like to thank the industrial member companies of the Steel Research Centre and NSERC for financial support and ArcelorMittal Dofasco for supplying the scrap.

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Authors and Affiliations

  1. Severstal Columbus, Columbus, MS, 39703, USA

    Kamalesh Mandal (Senior Metallurgist)

  2. Ferrous Metallurgy, McMaster University, Hamilton, ON, L8S 4L7, Canada

    Gordon A. Irons (Dofasco Professor of Ferrous Metallurgy, Director)

  3. Steel Research Centre, McMaster University, Hamilton, ON, L8S 4L7, Canada

    Gordon A. Irons (Dofasco Professor of Ferrous Metallurgy, Director)

Authors
  1. Kamalesh Mandal
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  2. Gordon A. Irons
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Correspondence to Kamalesh Mandal.

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Manuscript submitted September 13, 2012.

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Mandal, K., Irons, G.A. A Study of Scrap Heating By Burners. Part I: Experiments. Metall Mater Trans B 44, 184–195 (2013). https://doi.org/10.1007/s11663-012-9751-2

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