DOI: 10.52150/2522-9117-2018-32-93-106

Chaika Alexey Leonidovich, PhD, Senior Researcher, Head of Department, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; e-mail: chayka777@list.ru
Chernyatevych Anatoliy Hryhorovych, Dr. Sci, professor, Head of Department, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; e-mail: agchern@ua.fm; ORCID 0000-0002-4552-4997
Sokhatsky Alexander Anatolievich, PhD (Engin.), Researcher, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academic square Starodubova, 1, Dnipro, Ukraine, 49107
Moskalina Andrey Alexandrovich, Researcher, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; e-mail: andreimp250@inbox.ru
Golub Tetyana Sergeevna, PhD (Engin.), Senior Researcher, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; e-mail: dove@email.ua, ORCID 0000-0001-9269-2953
Molchanov Lavr Sergeevich, PhD (Engin.), Senior Research Scientist, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; ORCID 0000-0001-6139-5956

Investigation of the effect of silicon content in iron and its temperature on exergy indicators of the blast furnace-converter system

Abstract. The aim of the work is to study the energy intensity of metal products in the “blast furnace – oxygen converter” system during the development of pulverized coal (PCF) in the blast furnace production. One of the parameters characterizing the thermodynamic indicators of blast-furnace smelting is the silicon content in liquid iron. A study was made of the effect of silicon content in iron and its temperature on the performance and thermodynamic indicators of steel production in the blast furnace – oxygen converter shop chain during the development of pulverized coal in the blast furnace. The calculated minimum and maximum values of changes in productivity and consumption of coke, and exergy indicators with a change in the silicon content in the iron. It is established that a decrease in the silicon content and the temperature of iron in a blast furnace can reduce the loss of exergy, increase the exergy efficiency, maintain a constant level or improve environmental performance. However, reducing the temperature of the iron can lead to significant disturbances in the operation of the blast furnace. It is shown that silicon content in cast iron has the greatest impact in the blast furnace oxygen shop technological system, a decrease of which contributes to an increase in exergy efficiency, a decrease in exergy losses and an improvement in environmental indicators. The temperature of the cast iron on the exergy and environmental indicators in the “blast furnace – oxygen converter shop” system has a minor effect, however, a decrease in the temperature of the iron can lead to significant disturbances in the operation of the “blast furnace – oxygen
converter” complex.
Keywords: blast furnace, oxygen converter, PUT, silicon content in cast iron, cast iron temperature, exergy and environmental indicators.

Reference
1. Lyakishev N.P., Nikolayev A.V. K voprosu ob energeticheskoy otsenke sovremennoy tekhnologii chernoy metallurgii. Metally. – 2001. – №5. – S. 8-18.
2. Borodulin A.V. Domna v energeticheskom izmerenii. [A.V. Borodulin, A.D. Gorbunov, V.I. Romanenko, S.P. Sushchev]. – Dneprodzerzhinsk: DGDU, 2006. – 542 s.
3. Borodulin A.V. Eksergeticheskiy analiz raboty domennoy pechi na kombinirovannom dut’ye. [A.V. Borodulin, O.I. Varivoda, A.F. Kovtun, B.M. Khenkin]. Dep. v Chermetinform. 30.11.89. № 5296 – 4M89. 46 s. RZHMetallurgiya. 1990. 3V178 Dep.
4. Brodyanskiy V.M., Fratsher V., Mikhalek K. Eksergeticheskiy metod i yego prilozheniya. [Pod red. Brodyanskogo V.M.] – M.: Energoizdat, 1988. – 288 s.
5. Ayzatulov R.S., Borodulin A.V., Kovtun A.F. Metodika eksergeticheskogo analiza kislorodno-konverternoy plavki. ICHM, 1989, 37 s. Dep. rukopis’ v Chermetinformatsii, 30.11.89, №5297 – CHM89.
6. Borodulin A.V. Analiz i optimizatsiya energoispol’zovaniya v komplekse domennaya pech’– konverter. [A.V. Borodulin, I.I. Kobeza, H.Ye. Rekhtin i dr.] Metallurgicheskaya i gornorudnaya promyshlennost’. – 1992.– № 2. – S. 56-58.
7. Eksergeticheskiy analiz domennoy plavki pri primenenii razlichnykh vidov topliva. [V.I. Bol’shakov, A.L. Chayka, A.A. Sokhatskiy, A.A. Moskalina] Fundamental’nyye i prikladnyye problemy chernoy metallurgii. − 2012. − Vyp. 26. − S. 35-41.
8. Eksergeticheskiy analiz energoeffektivnosti primeneniya pyleugol’nogo topliva v domennom  proizvodstve. [V.I. Bol’shakov, A.L. Chayka, A.A. Moskalina]. Ekologiya i promyshlennost’. – 2014. – № 2. – S. 87-94.
9. Eksergeticheskiy analiz domennoy plavki s ispol’zovaniyem pyleugol’nogo topliva. [A.L. Chayka, A.A. Sokhatskiy, A.A. Moskalina]. Izvestiya VUZov. Chernaya Metallurgiya. – 2014. – № 4. – S. 68-70.
10. Analiz energoeffektivnosti primeneniya PUT v domennom proizvodstve s ispol’zovaniyem eksergeticheskogo metoda issledovaniya. [A.L. Chayka, V.I. Bol’shakov, A.A. Sokhatskiy, A.A. Moskalina, V.YU Shostak]. Fundamental’nyye i prikladnyye problemy chernoy metallurgii. − 2014. − Vypusk 28. − S. 32-46.
11. Issledovaniye vliyaniya khimicheskogo sostava pyleugol’nogo topliva na teplovyye i eksergeticheskiye pokazateli domennoy plavki. [A.L. Chayka, A.A. Sokhatskiy, A.A. Moskalina, B.V. Kornilov, K.S. Tsyupa, V.YU. Shostak] Ekologiya i promyshlennost’. – 2017. – № 3-4. – S. 76-84.
12. Kiyashko T.S., Semykin S.I., Borodulin A.V. Issledovaniye energeticheskogo sostoyaniya konverternoy vanny. Sbornik dokladov mezhdunarodnoy nauchno-prakticheskoy konferentsii «Teoriya i praktika teplovykh protsessov v metallurgii» – Yekaterinburg: UrFU, 2012 – S. 266-272.
13. Polnyy energeticheskiy balans domennoy plavki s primeneniyem PUT v usloviyakh Ukrainy. [A.L. Chayka, A.A. Sokhatskiy, A.A. Moskalina, B.V. Kornilov, V.YU. Shostak, K.S. Tsyupa, R.V. Avdeyev]. Teoriya i praktika metallurgii. – 2017. – № 3-4. – S. 5-9.
14. A.s. № 73905 Ukrainy. Metodika rascheta. Polnyy energeticheskiy balans domennoy plavki. [Borodulin A.V., Chayka A.L., Sokhatskiy A.A., Moskalina A.A.]. Zayavl. № 73841 15.05.17. Registr. 25.09.17. 15. Metallurgiya chuguna: Uchebnik dlya vuzov. 3-ye izd., pererab. i dop. [Pod redaktsiyey YU.S. Yusfina]. – M.: IKTS «Akademkniga», 2004. – 774 s.
16. Tovarovskiy I.G. Poznaniye protsessov i razvitiye tekhnologii domennoy plavki. – Dnepropetrovsk: Zhurfond, 2015. – 912 s.
17. Usloviya domennoy plavki s nizkim soderzhaniyem kremniya v chugune. [S.V. Filatov, I.F. Kurunov, L.A. Smirnov, V.A. Kobelev, O.P. Onorin]. Stal’. – 2013. – №8. – S. 7-10.
18. Ostroukhov M.YA., Shparber L.YA. Spravochnik mastera-domenshchika. – M.: Metallurgiya, 1976. – 304 s.
19. Volkov V.P., Shparber L.YA., Gusarov A.K. Tekhnolog-domenshchik: spravochnik. – M.: Metallurgiya, 1986. – 263 s.
20. Maslov V.A., Dubovkina M.YU., Khlestova O.A. Ispol’zovaniye matematicheskikh modeley snizheniya temperatury chuguna s tsel’yu opredeleniya vykhoda uglerodsoderzhashchikh otkhodov. Vestnik Priazovskogo gosudarstvennogo tekhnicheskogo universiteta. Seriya: Tekhnicheskiye nauki. – 2011.