DOI: 10.52150/2522-9117-2018-32-137-150

Stepanenko Dmitry Alexandrovich, PhD (Engin.), Senior Researcher, Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; e-mail:d.gorodenskiy@gmail.com, Gorodenskiy@i.ua, ORCID 0000-0002-0184-8295

Tsyupa Natalia Oleksandrivna, PhD, 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: tysya6669@mail.ru, t.kirill.90@yandex.com

Bel’kova Alla Ivanovna., 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; e-mail: alla2904b8@gmail.com, allabelkova8@mail.ru, ORCID 0000-0001-8519-9351

Skachko Alexander Sergeevich, PhD (Engin.), Researcher, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academic square Starodubova, 1, Dnipro, Ukraine, 49107

Analytical and experimental study of the thermophysical properties of blast furnace slag melts in the conditions of blast furnaces of Ukraine

Abstract. The aim of the work is to establish patterns of influence of the chemical composition of blast-furnace slags on the thermophysical properties of their melts, which is relevant to ensure high technical and economic indicators of the blast furnace. Experimental studies of the temperature of molten iron and slag at their release from a blast furnace with a volume of 1500 m3 have been carried out. It is shown that the temperatures of iron and slag have almost identical values and vary in the range of 1451÷1487°С. On a Anton Paar rotary rheometer, viscosity measurements were made in the temperature range of 1320 ÷ 15000С and it was shown that the viscosity of slags from the blast furnace output exceeds its optimal value of 0.3 Pa.second. Based on the correlation-regression analysis of the literature data and the performed experimental studies, the enthalpy of the melts was determined as a function of the chemical composition of blast-furnace slags, which are represented through stoichiometry (ρ) and temperature. It is shown that when temperature fluctuations of slag melts in the range of 1453 ÷ 1487°С their enthalpy changes in the range of 1933÷2031 kJ/kg. A predictive model for calculating the enthalpy of blast-furnace slags is proposed. On the basis of the proposed predictive model, the enthalpy of blast furnace slags for a blast furnace with a volume of 1500 m3 was calculated taking into account their actual temperatures
at the outlet.
Keywords: blast furnace slag, experiment, thermal properties of slags, viscosity, enthalpy, predictive model.

Reference
1. Gotlib A.D. Domennyy protsess. – M.: «Metallurgiya». – 1966. – 503 s.
2. Yaroshevskiy S.L., Gayvoronskiy YA.S., Popov N. N. Kontrol’ teplovogo sostoyaniya gorna domennoy pechi. – K.: Tekhnika. – 1968. – 184s.
3. Voskoboynikov V.G. Svoystva zhidkikh domennykh shlakov. [V.G. Voskoboynikov, N.Ye. Dunayev, A.G. Mikhlevich i dr.]. –M.: Metallurgiya. -1975. -184 s.
4. Zhmoydin G.I., Togobitskaya D.N. Problema informatsionnogo obespecheniya teoreticheskoy i prikladnoy metallurgii. Metally. –1991. – №3. – S.218-221.
5. Togobitskaya D.N., Khamkhot’ko A.F., Likhachev YU.M. Optimizatsiya metallurgicheskikh tekhnologiy i kontseptsiya sozdaniya informatsionnointellektual’nykh system. Fundamental’nyye i prikladnyye problemy
metallurgii. -Kiyev: Naukova dumka. –1995. – S.242-249.
6. Prikhod’ko E.V., Togobitskaya D.N. Bazy fiziko-khimicheskikh i tekhnologicheskikh dannykh dlya sozdaniya informatsionnykh tekhnologiy v metallurgii. Metallurgicheskaya i gornorudnaya promyshlennost’.- 1999. – №3. – C. 17-21.
7. Togobitskaya D.N. bazy viskozimetricheskikh dannykh dlya rascheta kristallizatsionnoy sposobnosti metallurgicheskikh shlakov. [D.N. Togobitskaya, A.F. Khamkhot’ko, YU.M. Likhachev, D.A. Stepanenko]. Fundamental’nyye i prikladnyye problemy chernoy metallurgii. – 2008. – vyp. 18. – S. 200-209.
8. Togobitskaya D.N. Ínformatsíyno-analítichna sistema dlya doslíd hennya kristalí atsíynoí
datností metalurgíynikh shlakív. [D.M. Togobits’ka, D.O. Stepanenko, A.F. Khamkhot’ko, YU.M. Líkhachov]. Sistemn tekhnologii. – Dnipropetrovs’k. – 2010. – Vip. 2 (67). – S. 74-80.
9. Gavrilko S.A. Issledovaniye teplofizicheskikh svoystv domennykh shlakov i peredel’nykh chugunov. [S.A. Gavrilko, YU.V. Moiseyko, S.A. Cherepanov i dr.]. Metaluggia. – Zaporizza: ZDÍA, 2006. – Vip. 13. – S. 106-112.
10. Il’chenko K.D., Chechenev V.A., Ivashchenko V.P., Tereshchenko V.S. Teplofizicheskiye svoystva promyshlennykh materialov: Spravochnik. – Dnepropetrovsk: Sích. – 152 s.
11. Usachev A.B., Balasanov A.V., Churgel’ V.O., Vil’danov S.K. Issledovaniye fizicheskikh svoystv shlakov protsessa zhidkofaznogo vosstanovleniya zheleza ROMELT. – Izv.vuzov. Chernaya metallurgiya. -1997. -№1. – S.27-30.
12. Pribory avtomaticheskiye sledyashchego uravnoveshivaniya KSM2, KSM2I, KSP2, KSP2I, KSU2. Tekhnicheskoye opisaniye i instruktsiya po ekspluatatsii TO-994″.
13. Prikhod’ko E. V. Prognozirovaniye fiziko-khimicheskikh svoystv oksidnykh system. [E.V. Prikhod’ko, D.N. Togobitskaya, A.F. Khamkhot’ko, D.A. Stepanenko]. – Dnepropetrovsk: Porogi, 2013. – 344s