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Power Engineering, Ecology and Recycling
ArticleName Analysis of influence of out-of-furnace treatment of melts on environmental indicators of iron and steel production by calculation method
ArticleAuthor I. V. Butorina, M.V. Butorina

Peter the Great St. Petersburg Polytechnic University (St. Petersburg, Russia):

I. V. Butorina, Dr. Eng., Prof., e-mail:


Baltic State Technical University “VOENMEH” named after D. F. Ustinov (St. Petersburg, Russia):
M. V. Butorina, Cand. Eng., Associate Prof.


A calculation analysis of the effect of out-of-furnace treatment of cast iron and steel on the environmental performance of their production is carried out using a mathematical description of the life cycle of liquid steel. It has been proved that out-of-furnace (ladle) treatment of cast iron and steel melts can rightfully be considered the best available technology, as it improves the majority of environmental indicators for production of ferrous metals. It has been shown that out-of-furnace desulfurization of cast iron reduces the yield of such waste as slag by up to 18%, the energy consumption of the process by at least 2.5%, dust emission in the casthouse by three and a half times, sulfur oxide emission by more than an order of magnitude, nitrogen oxide emission by 20%. In addition, cast iron desulfurization reduces dust emission at all stages of steelmaking from 3 to 9 times and reduces the yield of steelmaking slag by an average of 20 kg / t of steel, and out-of-furnace desulfurization of steel reduces the specific yield of steelmaking slag by almost half. The use of the calculated data will allow metallurgists to adjust the values of technological standards necessary to obtain a comprehensive environmental permit for production.

keywords Out-of-furnace treatment, cast iron, steel, best available technologies, environmental indicators, technological standards, emissions, slag

1. Federal Law dated 21.07.2014 No. 219-ФЗ (version dated 28.12.2017) ”On introducing variations in the Federal Law “On environment protection” and separate legislative acts of Russian Federation”. Available at: (accessed: 11.05.2020).
2. GOST R ISO 14001-2016. Environmental management systems. Requirements with guidance for use. Introduced: 01.03.2017.
3. Information and technical reference on the best available technologies. Production of iron, steel and ferroalloys. IST 26–2017. Moscow: Byuro NTD, 2017.
4. Butorina I. V. Fundamentals of sustainable development of the metallurgical production. Donetsk: Kashtan, 2005. 332 p.
5. Shengli Wu, Laixin Wang, Yanan Lu, Kai Gu. Improving the desulphurization in COREX-3000 process by the optimization of chemical compositions of slag. ISIJ International. 2018. Vol. 58, Iss. 11. pp. 2025–2031.
6. Qing Cao, Nastac L., Pitts-Baggett A., Qiulin Yu. Numerical investigation of desulfurization kinetics in gas-stirred ladles by a quick modelling analysis approach. Metallurgical and Materials Transactions B. 2018. Vol. 49. No. 3. pp. 988–1002.
7. Ravenko А. V. On the equilibrium of sulfur in the blast furnace hearth. Stal. 2017. No. 4. pp. 7–10.
8. Shestakov А. sulfur removal in a blast furnace and external desulfurization of cast iron [electronic resource] Available at: 28.01.2020. (accessed: 30.03.2020).
9. Best Available Techniques. Reference Document on the Production of Iron and Steel. European Commission, January 1999. 310 p.
10. Best Available Techniques Reference Document on the Production of Iron and Steel. European Commission, January 2013. 311 p.
11. Butorina I. V, Butorina М. V. Issues of implementing the best available technologies in the steel industry of the Russian Federation. Chernye Metally. 2019. No. 1. pp. 43–48.
12. Bazhenov V. Е., Pikunov М. V. Silicon microliquation in cast iron. Izvestiya vysshikh uchebnykh zavedeny. Chernaya Metallurgiya. 2018. Vol. 61. No. 3. pp. 230–236.
13. Shevelev L. N. Evaluation of the economic and energy efficiency of the up-to-day technologies for production of cast iron. Stal. 2017. No. 10. pp. 68–73.
14. Butorina I. V. The effect of silicon on formation of melting dust. Stal. 2011. No. 1. pp. 7–10.
15. Butorina I. V., Emelyanova Е. S. Еvaluating the feasibility of recycling steelmaking dust in cupolas. In the following paginated issue of Metallurgist. 2011. Vol. 54, Iss. 9. pp. 682–685.
16. Lisin V. S., Yusfin Yu. S. Resource and environmental issues of the XXI century and metallurgy. Moscow: Vysshaya shkola. 1998. 447 p.

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