The composition of the ladle slag in units designed for the secondary treatment of steel needs to be optimized in order to increase the service life of the units’ linings. On the one hand, the slag subjects the refractories to chemical wear. On the other hand, under certain conditions the slag is capable of forming a protective crust inside the units. The Nizhniy Tagil Metallurgical Combine has chosen certain refractories for the most heavily worn part of the lining of its vacuum chambers, since only the installation of a lining of a differentiated design that equalizes the rate of wear around the lining’s perimeter will allow the desired effect to be obtained from optimizing the composition of the slag. An efficient composition for the slag was also chosen, the slag having high contents of MgO and Al2O3. The use of such a slag helps form a protective slag crust of the composition MgO·Al2O3 on spinel refractories having the compositions MgO·Cr2O3 and MgO·Al2O3.
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References
K. K. Strelov and I. D. Kashcheev, Theoretical Principles of the Production of Refractory Materials: Instruction Manual for Higher Educational Institutions [in Russian], Metallurgiya, Moscow (1996).
A. A. Metelkin, O. Yu. Sheshukov, V. V. Levchuk, et al., “Assessing the effect of the aggressiveness of process factors on the wear of aluminum-periclase-carbon products used to line steel-pouring ladles,” Stal’, No. 4, 29 – 31 (2013).
A. A. Metalkin, O. Yu. Sheshukov, I. V. Nekrasov, et al., “Extending the lining life in circulatory vacuum units at OAO EVRAZ NTMK,” Steel in Translation, 43(9), 593 – 596 (2013).
O. Yu. Sheshukov, I. V. Nekrasov, A. V. Sivtsov, et al., “Real-time control over the dynamics of the oxygen content and thickness of the slag in the treatment of steel on a ladle-furnace unit,” Stal’, No. 1, 14 – 16 (2014).
O. Yu Sheshukov, S. V. Vinogradov, E. A. Visloguzova, et al., “Improving the durability and reliability of vacuum-chamber linings,” Steel in Translation, 42(1), 45 – 47 (2012).
I. V. Nekrasov, O. Yu. Sheshukov, V. N. Nevidimov, et al., “Assessing the viscosity of industrial slags,” Ibid., 42(4), 302 – 304 (2012).
S. I. Popel, A. I. Sotnikov and V. N. Boronenkov, Theory of Metallurgical Processes: Instructional Manual for Higher Educational Institutions [in Russian], Metallurgiya, Moscow (1986).
Atlas of Slags: Handbook [Russian translation], Metallurgiya, Moscow (1985).
D. Ya. Povolotskii, Physico-Chemical Principles of Steelmaking Processes: Instructional Manual for Higher Educational Institutions [in Russian], YuUrGU, Chelyabinsk (2007).
V. I. Yavoiskii, Theory of Steelmaking Processes: Monograph [in Russian], Metallurgiya, Moscow (1967).
O. A. Esin and P. V. Gel’d, Physical Chemistry of Pyrometallurgical Processes: Monograph [in Russian], Part 2, Metallurgiya, Moscow (1966).
Yu. V. Kabatina, Development of an Improved Technology for Using a Ladle-Furnace Unit to Treat Steel Cast on Continuous Section Casters: Engineering Sciences Candidate Dissertation, Magnitogorsk (2010).
S. N. Kuznetsov, Study of Physico-Chemical Features of the Formation of Products from the Deoxidation of Low-Carbon Low-Silicon Steels in Connection with Problems with Their Castability on Continuous Casters: Author’s Abstract of Engineering Sciences Candidate Dissertation, Moscow (2009).
O. Yu. Sheshukov, I. V. Nekrasov, A. V. Syvtsov, et al., “Electric characteristic of steelmaking electric furnace and the process control,” Applied Mechanics and Materials, 268, Part 1, 1376 – 1379 (2013).
M. V. Zuev, O. Yu. Sheshukov, A. I. Stepanov, et al., “Influence of intensified electrosmelting on the lining life of the DSP-135 arc furnace at OAO Severskii Trubnyi Zavod,” Steel in Translation, 41(7), 599 – 602 (2011).
M. Mertz, T. Piper, W. Stein, et al., “New data on the use of a foamy slag in the production of high-chromium steels,” Chernye Metally, No. 6, 46 – 49 (2006).
The applied scientific studies (in the given research project) were performed with financial support from the Russian Ministry of Science and Education under Contract No. 14.604.21.0097, which provided a subsidy on 08.07.2014 (the unique identifier for the project is RFMEF160414X0097).
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Translated from Novye Ogneupory, No. 8, pp. 7 – 12, August, 2015.
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Sheshukov, O.Y., Nekrasov, I.V., Mikheenkov, M.A. et al. The Slag Regime of Equipment Used for the Secondary Treatment of Steel and the Durability of Its Refractories. Refract Ind Ceram 56, 327–332 (2015). https://doi.org/10.1007/s11148-015-9842-0
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DOI: https://doi.org/10.1007/s11148-015-9842-0