THE ANALYSIS OF MASS TRANSFER IN CONDITIONS OF GAS STIRRING AT LADLE REFINING OF STEEL
https://doi.org/10.17073/0368-0797-2015-9-638-644
Abstract
The intensification of steel refining at ladle treatment and improvement of production efficiency of modern steelmaking require the analytical description of mass transfer in conditions of gas stirring at ladle refining. The analysis of industrial data on the basis of standard models does not allow to describe adequately the real processes. The methods and results of estimation of mass transfer volume factor which can be considered as a key factor for dynamics of steel refining in conditions of gas stirring are presented in the paper. The analysis of industrial data on desulfurization of low- and medium-carbon metal at furnace-ladle (EAF) and vacuum degassing unit (VD) was made on the basis of proposed models of gas stirring and refining. New data on the correlation of stirring rates and volume mass transfer factor were found for EAF and VD processes of steel treatment. The adequacy of proposed models of refining processes was tested on the basis of correlation data on gas stirring rate and mass transfer factor and confirmed a good agreement with recommended process parameters and archived refining efficiency.
About the Authors
S. P. Burmasov
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Professor of the Chair “Metallurgy of Iron and Alloys”,
19, Mira str., Ekaterinburg, 620002
A. G. Gudov
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Cand. Sci. (Eng.), Assist. Professor of the Chair “Metallurgy of Iron and Alloys”,
19, Mira str., Ekaterinburg, 620002
Yu. G. Yaroshenko
Ural Federal University named after the first President of Russia B.N. Yeltsin
Russian Federation
Russian Federation
Dr. Sci. (Eng.), Professor of the Chair “Thermal Physics and Informatics in Metallurgy”,
19, Mira str., Ekaterinburg, 620002
V. V. Meling
JSC “Severskii Tube Steelworks”
Russian Federation
Russian Federation
Chief Foreman of the Section of Steel Ladle Treatment,
7, Vershinina str., Polevskoi, Sverdlovsk region, 623388
L. E. Dresvyankina
JSC “Severskii Tube Steelworks”
Russian Federation
Russian Federation
Head of the Ladle Treatment Group at Metallurgical Laboratory of R&D Centre,
7, Vershinina str., Polevskoi, Sverdlovsk region, 623388
References
1. Yang Ku, Yun Liang, Lyu Lyu A model study of mixing and mass transfer in ladle injection. In: 3rd Int. Conf. on refining of iron and steel by powder injection, Lulea, Sweden, June 15–17, 1983. Proceedings. Sweden: MEFOS, 1983.
2. Sano M., Mori K. Circulating fl ow model in a molten metal bath with special respect to behavior of bubble swarms and its application to gas injection processes. In: 3rd Int. Conf. on refining of iron and steel by powder injection, Lulea, Sweden, June 15–17, 1983. Proceedings. Sweden: MEFOS, 1983.
3. Burmasov S.P. Technological aspects of the steel quality. Vestnik GOU UGTU-UPI. Teplotekhnicheskie i tekhnologicheskie problemy proizvodstva stali: Trudy nauchno-tekhnicheskoi konferentsii, posvyashchennoi 98-letiyu so dnya rozhdeniya zasluzhennogo izobretatelya RSFSR, professora N.I. Kokareva [Vestnik GOU UGTUUPI. Thermal and technological problems of steel production: Proceedings of scientific conference devoted to the 98 anniversary of Honored Inventor of the RSFSR, professor Kokarev N.I.]. Ekaterinburg: UGTU-UPI, 2002, pp. 50–58. (In Russ.).
4. Novikov V. K. Development of the polymer model of silicate melts. Rasplavy. 1987. Vol. 1, no. 6, pp. 21‒23. (In Russ.).
5. Burmasov S.P., Gudov A. G., Panfilov A. M. Vnepechnoe rafinirovanie stali v usloviyakh gazovogo peremeshivaniya: metodicheskie ukazaniya k vypolneniyu inzhenernykh raschetov vnepechnoi obrabotki stali [Ladle refining of steel in a gas mixing: guidelines for the implementation of engineering calculations for furnace steel processing]. Ekaterinburg : UrFU, 2012. 37 p. (In Russ.).
6. Elliott John F., Gleiser Molly, Ramakrishna V. Thermochemistry for Steelmaking. Addison-Wesley Inc. 1963. (Russ.ed.: Elliott J., Gleiser M., Ramakrishna V. Termokhimiya staleplavil’nykh protsessov. Moscow: Metallurgiya, 1969. 252 p.).
7. Shakhin M.A., El’-Nikkhaili А., El’-Zeki M. Stirring the molten metal in the ladle nitrogen purge. Applying, restrictions, control. In: Inzhektsionnaya metallurgiya ’86: Tr. IV mezhdunar. konf. po inzhektsion. metallurgii, g. Lulea, Shchvetsiya, 11–13 iyunya 1986 g. [Injection Metallurgy ‘86: Proceedings of the 4th Int. Conf. 11–13 June, 1986. Lulea, Sweden]. Kudrin V.A. ed. Moscow: Metallurgiya, 1990, pp. 146–156. (In Russ.).
Review
For citations:
Burmasov S.P., Gudov A.G., Yaroshenko Yu.G., Meling V.V., Dresvyankina L.E. THE ANALYSIS OF MASS TRANSFER IN CONDITIONS OF GAS STIRRING AT LADLE REFINING OF STEEL. Izvestiya. Ferrous Metallurgy. 2015;58(9):638-644. (In Russ.) https://doi.org/10.17073/0368-0797-2015-9-638-644
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