Abstract
When a blast furnace with a volume of 5000 m3 was transferred to pulverized coal injection technology, an intense peripheral gas flow, which led to the combustion of shoulder and tuyere coolers, developed. It was not possible to eliminate this phenomenon either by methods of control “from above” or by reducing the diameter of tuyeres. To eliminate the peripheral gas flow, it is advisable on a furnace with a hearth diameter of 14.7 m to maintain the total mechanical energy of the combined blast flow at the tuyere cut at a level not lower than 2100–2600 kJ / s, and the total mechanical energy of the hearth gas flow not lower than 5100–5300 kJ /from. It is also necessary to form a narrow coke “vent” on the top of the blast furnace and to stretch the ore ridge as much as possible.
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REFERENCES
Pinchuk, D.V., Otorvin, P.I., Romanchuk, A.V., et al., The technology of blowing pulverized coal into the 5000 m3-volume blast furnace, Trudy vseukrinskogo nauchno-tekhnicheskoi konferentsii posvyashchennoi 100-letiyu so dnya rozhdeniya G.G. Efimenko, 4–5 aprelya 2017 g. (Proc. All-Ukr. Sci.-Tech. Conf. Dedicated to 100th Anniversary of G.G. Efimenko, April 4–5, 2017), Dnepr: Nats. Metall. Akad. Ukr., 2017, pp. 122–128.
Lyalyuk, V.P., Tarakanov, A.K., Kassim, D.A., et al., Pulverized-coal injection in a 5000-m3 blast furnace, Steel Transl., 2017, vol. 47, no. 10, pp. 675–681.
Lyalyuk, V.P., Tarakanov, A.K., and Kassim, D.A., Total energy of the hearth gas in pulverized-coal injection, Steel Transl., 2017, vol. 47, no. 3, pp. 190–197.
Lyalyuk, V.P., Tarakanov, A.K., Kassim, D.A., et al., Determining the gas trajectory in blast-furnace injection of pulverized coal, Steel Transl., 2017, vol. 47, no. 4, pp. 257–262.
Lyalyuk, V.P., Sovremennye problemy tekhnologii domennoi plavki (Modern Problems of Technology of the Blast Furnace Fusion), Dnepropetrovsk: Porogi, 1999.
Lyalyuk, V.P., Kamenev, R.D., and Zusmanovskii, A.Ya., The total energy of the blast flow and gas, Stal’, 1999, no. 6, pp. 13–18.
Lyalyuk, V.P. and Tovarovskii, I.G., Selection of the blast furnace conditions on the combined blast with analysis of the parameters of the tuyere zone, Chern. Met., 2003, no. 11, pp. 13–16.
Tarakanov, A.K., Lyalyuk, V.P., Kassim, D.A., et al., Coordination of the batch distribution at the blast-furnace mouth and the gas-flux distribution in the hearth, Steel Transl., 2018, vol. 48, no. 6, pp. 372–375.
Donskov, E.G., Lyalyuk, V.P., and Donskov, A.D., Gas behavior in blast furnaces, Steel Transl., 2014, vol. 44, no. 3, pp. 209–214.
Ishikawa, Y., Quelques considérations sur la conduite des hauts fourneaux géants, Rev. Metall., 1976, vol. 73, no. 3, pp. 283–317.
Lyalyuk, V.P., Fuel combustion at blast-furnace tuyeres, Steel Transl., 2019, vol. 49, no. 1, pp. 39–44.
Tarakanov, A.K., Ivashchenko, V.P., and Lyalyuk, V.P., Priorities in the development of automated control systems for the blast furnace process, Nov. Nauki Pridneprov’ya, 2010, no. 5, pp. 15–22.
Tarakanov, A.K., Lyalyuk, V.P., and Kassim, D.A., The choice of rational parameters of blast in blast furnaces based on the calculated control of the generalized indicators of the smelting mode, Nov. Nauki Pridneprov’ya, 2010, no. 5, pp. 57–65.
Tarakanov, A.K., Bochka, V.V., Kostomarov, A.S., and Karikov, S.A., Optimization of parameters of blast furnace smelting, Metall. Gornorudn. Prom-st ’., 2015, no. 2, pp. 11–13.
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Translated by A. Ivanov
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Lyalyuk, V.P., Tarakanov, A.K., Kassim, D.A. et al. Possibilities for Normalization of the Gasdynamic Mode of Blast Melting with Pulverized Coal Injection. Steel Transl. 50, 467–472 (2020). https://doi.org/10.3103/S0967091220070098
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DOI: https://doi.org/10.3103/S0967091220070098