Nonsteady heat transfer and transient processes in blast furnaces / Yaroshenko Y.G., Shvydkii V.S., Spirin N.A., Lavrov V.V., Noskov V.Y. // Steel in Translation. - 2015. - V. 45, l. 9. - P. 654-657.

ISSN:

09670912

Type:

Article

Abstract:

Nonsteady heat transfer within the melt in the blast furnace is considered. The filtration of hot metal and slag through the coke packing is taken into account in the calculation. The transient processes in the melt are found to be aperiodic (nonoscillatory). However, this is only the case with constant specific-heat ratio of the material and gas fluxes over the height of the given bed section. That is not consistent with the development of the heat transfer over the height of the blast furnace. An aperiodic (nonoscillatory) transient process is observed in the blast furnace if the perturbation has the same effect on the lower and upper stages of heat transfer. If the perturbation has opposing effects on the lower and upper stages of heat transfer, the transient process will be oscillatory. As this difference in magnitude and sign becomes more significant, the overregulation will be more pronounced. © 2015, Allerton Press, Inc.

Author keywords:

blast furnace; heat transfer; mathematical simulation; melt zone; transient processes

Index keywords:

Explosives; Heat transfer; Slags; Specific heat; Hot metal; Mathematical simulations; Melt zone; Nonoscillatory; Nonsteady; Specific heat ratio; Transient process; Upper stages; Blast furnaces

DOI:

10.3103/S0967091215090168

Смотреть в Scopus:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84951809616&doi=10.3103%2fS0967091215090168&partnerID=40&md5=8b6284d1866a3cc4674fabe4d6aaa20f

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Поле	Значение
Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-84951809616&doi=10.3103%2fS0967091215090168&partnerID=40&md5=8b6284d1866a3cc4674fabe4d6aaa20f
Affiliations	Yeltsin Ural Federal University, Yekaterinburg, Russian Federation
Author Keywords	blast furnace; heat transfer; mathematical simulation; melt zone; transient processes
References	Metallurgiya chuguna: Uchebnik dlya vuzov (The Metallurgy of Iron: A University Textbook), Yusfin, Yu.S., Ed., Moscow: IKTs Akademkniga, 2004, 3rd ed; Spirin, N.A., Ovchinnikov, Y.N., Shvydkii, V.S., Yaroshenko, Y.G., (1995) Teploobmen i povyshenie effektivnosti domennoi plavki (Heat Transfer and Increasing Blast-Furnace Efficiency), , UGTU, Yekaterinburg; De Castro, J.A., Nogami, H., Yagi, J., Transient mathematical model of blast furnace based on multifluid concept, with application to high operation (2000) ISIJ Intern., 40 (7), pp. 637-646; Chew, S.J., Zulli, P., Yu, A., Modelling of liquid flow in the blast furnace: Theoretical analysis of the effects of gas, liquid, and packing properties (2001) ISIJ Intern., 41 (10), pp. 1112-1121; Xu, J., Wu, S., Guo, X., Du, K., Numerical simulation on dynamic and static holdups of powder inside pre-reduction shaft furnace, Sixth International Congress on the Science and Technology of Ironmaking (ICSTI) (2012) 42nd International Meeting on Ironmaking, and 13th International Symposium on Iron Ore, Rio de Janeiro, Brazil, pp. 414-424; Ovshinnikov, Y.N., Moikin, V.I., Spirin, N.A., Bekovikov, B.A., (1989) Nestatsionarnye protsessy i povyshenie effektivnosti domennoi plavki (Nonsteady Processes and Blast-Furnace Efficiency), , Metallurgiya, Chelyabinsk; Reduction, heat transfer, and hydrodynamics in the blast furnace, Trudy Inst. Metall. UFAN SSSR, 1970, issue 24; 1972, issue 26; Onorin, O.P., Gladyshev, V.I., Kaplun, L.I., Filtration of iron slag melts through coke packing (1997) Izv. Vyssh. Uchebn. Zaved., Chern. Metall., 2, pp. 11-14; Mysik, A.F., Kukarkin, A.S., Kitaev, B.I., Babushkin, N.M., Heat transfer in an irrigated bed of solid pieces (1975) Izv. Vyssh. Uchebn. Zaved., Chern. Metall., 2, pp. 125-128
Correspondence Address	Spirin, N.A.; Yeltsin Ural Federal UniversityRussian Federation; email: n.a.spirin@urfu.ru
Publisher	Allerton Press Incorporation
Language of Original Document	English
Abbreviated Source Title	Steel Transl.
Source	Scopus