Abstract
The initial experience with pulverized-coal injection in two blast furnaces at OAO NLMK is analyzed. Factors affecting the pulverized-coal combustion in the tuyere are identified. The operational efficiency of the blast furnace with different pulverized-coal flow rates is discussed. Stable pulverized-coal consumption no lower than 135 kg/t has been attained at a blast furnace with a conical charging system; the corresponding furnace productivity is 70–75 t/m2 per day.
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Ono, E., Furukawa, T., and Matsurra, M., Combustion of pulverized coal in the circulation zone ahead of the tuyeres and high-speed injection of pulverized coal, Zairyo to Purosesu, 1991, vol. 4, no. 1, pp. 80–83.
Vilenskii, T.W. and Khemalyan, D.M., Dinamika goreniya pylevidnogo topliva: issledovaniya na elektronnykh vychislitel’nykh mashinakh (Dynamics of Pulverized-Coal Combustion: Computer Research), Moscow: Energiya, 1977.
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Original Russian Text © S.V. Filatov, V.I. Basov, I.F. Kurunov, 2015, published in “Stal’,” 2015, No. 7, pp. 6–9.
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Filatov, S.V., Basov, V.I. & Kurunov, I.F. Pulverized-coal injection at a blast furnace with a conical charging system. Steel Transl. 45, 503–506 (2015). https://doi.org/10.3103/S0967091215070062
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DOI: https://doi.org/10.3103/S0967091215070062