National Research University “Moscow Power Engineering Institute”, Moscow, Russia:

I. A. Sultanguzin, Dr. Eng., Professor, Dept. of Industrial Heat and Power Systems

Yu. V. Yavorovsky, Cand. Eng., Head of the Dept. of Industrial Heat and Power Systems

STC "Industrial Energy" Ltd., Ivanovo, Russia:
P. A. Shomov, Cand. Eng., Director, e-mail: shomov@list.ru

National University of Science and Technology “MISIS”, Moscow, Russia:
A. V. Egorov, Cand. Eng., Associate Professor, Dept. of Metallurgy of Steel and Ferroalloys

Gazprom VNIIGAZ, Moscow, Russia:
I. V. Evseenko, Cand. Eng., Leading Researcher, Laboratory of Energy Saving and Efficiency

Methodological approaches for building the fuel and energy balance of an electrometallurgical plant based on modern and proven technologies implemented in furnaces of the Consteel type mini-complex are presented. The mini-complex is considered systematically, i.e., technological, energy, environmental and financial aspects are reflected in the production of rolled products from ferrous scrap. The features of the work of each process section are considered, technological and energy characteristics, operating conditions of a single element of the energy-technological system and the electrometallurgical mini-complex as a whole are given. Material and energy balances have been built. An environmental impact assessment is given. A comparative financial analysis of an integrated iron-and-steel works and an electrometallurgical mini-complex is given. The prospects for improving the considered energy-technological system based on the introduction of hydrogen technologies are shown.

1. Sultanguzin I. А., Shomov P. А. Development of energy saving program of integrated iron and steel works on the basis of information-analytical system «OptiMet». Chernye Metally. 2016. No. 6. pp. 47–53.
2. Sultanguzin I. A., Yavorovsky Y. V., Kurzanov S. Y., Khromchenkov V. G., Zhigulina E. V. Using of information-analytical system “OptiMet” for the resource and energy saving tasks in engineering educational process. 2018 IV International Conference on Information Technologies in Engineering Education (Inforino), Moscow, 2018. pp. 1–4.
3. Sultanguzin I. А. Environmental safety and energy efficiency of industrial heat and power systems. Moscow: Izdatelstvo MEI, 2013. 288 p.
4. Stankevich N. L., Severinets G. N., Vigdorchik D. Ya. Handbook on gas supply and use. Leningrad: Nedra, 1990. 762 p.
5. Ya. P. Kulagin`s air heaters. Available at: https://www.kalugin.biz/ru/content/hot_stoves.
6. Argenta P., Bianchi М., Ferri M. V. Smelting of electric steel with continuous loading of hot charge. Elektrometallurgiya. 2003. No. 5. pp. 27–34.
7. Belkovskiy А. G., Kats Ya. L., Krasnyanskiy М. V. Current state and development trends of steel production technology in EAF and its design. Chernaya metallurgiya. Byulleten nauchnotekhnicheskoy i ekonomicheskoy informatsii. 2013. No. 3. pp. 72–88.
8. Di Donato A., Volponi V., De Miranda U., Argenta P. Development of flexible operating practices to produce steel with Consteel EAF process in ORI Martin plant. 7^th European Electric Steelmaking Conference. Venice, IT. Vol. 1. May 26–29, 2002.
9. Fanutti G., Pozzi M. Environmental control and the CONSTEEL process. Millennium Steel. 2004. pp. 105–110.
10. Giavani C. CONSTEEL Evolution: The Proven Technology For Maximum EAF Charging Flexibility. Proc. 19^th Middle East Iron & Steel Conf, Dubai. 14–16 December 2015.
11. Jiemin T., Xuefeng W., Ferri M. B., Argenta P. Charging hot metal to the EAF using Consteel. Steel Times International. 2005. Vol. 29. No. 4. pp. 34–39.
12. Memoli F., Jones J. A. T., Piciolo F. How changes in scrap mix affect Consteel charging of an EAF. Steel Times International. 2013. November/December.
13. Rummler K., Tunaboylu A., Ertas D. New generation in preheating technology for electric arc furnace steelmaking. Iron & Steel Technology. 2013. January. pp. 90–98.
14. Vallomy J. A. The consteel process for continuous melting-refining in the electric furnace and its impact on energy conservation and environment. Proceedings of The 6^th International Iron and Steel Congress, 1990, Nagoya, ISIJ. pp. 82–89.
15. Egorov А. V. Electric steel-smelting furnaces of ferrous metallurgy. Moscow: Metallurgiya, 1985. 280 p.
16. Evstratov V. G., Uryupin G. P., Shakirov Z. Kh. et. al. Study of the material balance of melts at the EAF-120 Consteel electric furnace of the Ashinsky Metallurgical Plant. Stal. 2013. No. 6. pp. 25–29.
17. Kuzmenko А. G., Frolov Yu. F., Pozdnyakov М. А. et. al. Consteel technology and electric furnaces: prospects for application in domestic metallurgy. Stal. 2016. No. 4. pp. 16–21.
18. Parsunkin B. N., Andreev S. М., Savinov А. S., Dubrovin V. К. Energy-saving dynamic energy consumption control of process electric arc aggregates. Chernye Metally. 2018. No. 12. pp. 20–27.