DOI: 10.52150/2522-9117-2024-38-731-740
Gres Leonid Petrovych, D. Sc. (Tech.), Professor, Ukrainian State University of Science and Technologies, Lazariana St., 2, Ukraine, Dnipro, 49010. ORCID: 0000-0002-5343-3438. E-mail: leonid.gres@gmail.com
Gupalo Olena Viacheslavivna, Ph. D. (Tech.), Associate Professor, Ukrainian State University of Science and Technologies, Lazariana St., 2, Dnipro, 49010, Ukraine. ORCID: 0000-0003-3145-9220. E-mail: gupaloelena@gmail.com
Vereshchak Viktor Ivanovych, Director, Research and production company “KOSH” LLC, Ivana Mazepy Ave., 31/11, Dnipro, Ukraine
Yeromin Oleksandr Olehovych, Dr. Sc. (Tech.), Professor, Ukrainian State University of Science and Technologies, Lazariana St., 2, Ukraine, Dnipro, 49010. ORCID: 0000-0001-8306-578X. E-mail: aoeremin@gmail.com
Radchenko Yurii Mykolaiovych, Ph. D. (Tech.), Associate Professor, Ukrainian State University of Science and Technologies, Lazariana St., 2, Dnipro, 49010, Ukraine. ORCID: 0000-0002-5055-6707. E-mail: y.n.radchenko@gmail.com
Vereshchak Denys Viktorovych, Director, Research and production company “KOSH” LLC, Ivana Mazepy Ave., 31/11, Dnipro, Ukraine
DETERMINATION OF THE INITIAL HEAT OUTPUT OF THE SOAKING PIT UNDER CONDITIONS OF UNSTABLE OPERATION OF THE METALLURGICAL PLANT
Abstract. The study is devoted to finding ways to improve the thermal performance of recuperative soaking pit when operating in modern conditions, which are characterized by unpredictability in the supply of fuel and energy resources to a metallurgical plant, the lack of a sustainable production program, the variety of ingots (billets), etc. The study aims to determine the rational operation mode for heating ingots (billets), which will ensure a minimum specific fuel consumption when fulfilling a production order. As a research method, the authors used methods for calculating metal heating and indicators of thermal performance based on the engineering theory of heating. The engineering model of heat transfer made it possible to obtain data on the temperature distribution across the ingot cross-section during heating without solving the differential heat conduction equation, as well as to calculate the duration of heating periods and heat losses of the working chamber of the well to the environment. Using the concept of thermal power made it possible to determine the main indicators of the thermal operation of the soaking pit: productivity, specific fuel consumption for heating the metal, and the efficiency of the soaking pit. The paper investigates the thermal performance of a recuperative soaking pit according to a typical operation mode of heating ingots (billets): the first period is heating with constant thermal power, the second is holding ingots (billets) at a constant temperature of the furnace chamber. It has been determined that when rectangular steel billets are heated, the minimum specific fuel consumption is ensured by operating a soaking pit with an initial natural gas consumption of 269-398 m3/hour. This heat rating of the soaking pit ensures an acceptable heating time for a metal mass of 29- 32 tons at the level of 3.4- 4.6 hours.
Key words: soaking pit, productivity, heat output, specific fuel consumption.
DOI: https://doi.org/10.52150/2522-9117-2024-38-731-740
For citation: Radchenko, Yu. M., Gupalo, O. V., Rebrykov, O. A., & Shtatskyi, M. O. (2024). Determination of the initial heat output of the soaking pit under conditions of unstable operation of the metallurgical plant. Fundamental and applied problems of ferrous metallurgy, 38, 731-740. https://doi.org/10.52150/2522-9117-2024-38-731-740
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