The use of statistical modelling to justify a rational technology of steel production in the conditions of JSC Ural Steel
Description
In the conditions of JSC Ural Steel, the most costly technological task in the production of high-quality steel is to provide the required sulfur content. The analysis of the sulfur removal in the production of high-quality steel in the technological conditions of JSC Ural Steel was performed. An increase in the sulfur content of the pig iron at 0,007-0,010% of the tapping from the blast furnace until used in an electric arc furnace was founded. The need for preliminary hot metal desulphurization before pouring in the electric arc furnace was justified. The method of calculating the cost of hot metal desulphurization, and the performance of the electric arc furnaces and ladle-furnace, depending on the quality of the initial charge on the sulfur content was developed. The methodology is based on material and thermal balances of processes, as well as statistical patterns of sulfur behaviour during the hot metal desulphurization, the steel smelting in the electric arc furnaces and ladle-furnace. A program has been created for calculating the total costs for the production of steel of the required quality, which makes it possible to optimize the technology of steel production with the required sulfur content, taking into account the achievement of minimum production costs. The results of optimization technology of smelting high-quality steel with using hot metal desulphurization at JSC Ural Steel were presented. In price terms in 2014, with an average sulfur content of the pig iron from the blast furnace 0.019 %, the minimum cost of production of steel with a sulfur content of 0.005% (with the share of liquid pig iron in the metal stock to 40%) are provided at the organization ladle hot metal desulphurization to a sulfur content of 0.006%. With an estimated cost of building an installation for the hot metal desulphurization at 0.5 billion rubles, the payback period under conditions of JSC Ural Steel will be less than 5 years.
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References
- Serov, Yu. V., & Mikhalevich, A. G. (1982). Estimating the efficiency of improving the quality of pig iron in accordance with the requirements of steelmaking. Metallurg, (2), 9-12. (in Russian)
- Starov, R. V., Yemelyanov, I. Ya., & Adamenko, L. P. (1983). Technical and economic efficiency of the use of desulfurized cast iron for steel smelting in 350-ton converters. Metallurgicheskaya i gornorudnaya promyshlennost, (3), 12- 14. (in Russian)
- Antipov, I. S., Meshcheryakov, A. A., Nevmerzhitsky, E. V., & al. (1988). Improving the quality of cast iron is one of the main tasks of producing high-quality steel. Stal, (7), 7-12. (in Russian)
- Shapovalov, A. N., Kropotov, & V. K. (1997). Optimal content of sulfur in cast iron for non-domain desulfurization. Metallurg, (12), 14. (in Russian)
- Shapovalov, A. N., Kropotov, V. K., & Druzhkov, V. G. (2001). Rational degree of desulphurization of pig iron in a blast furnace with allowance for subsequent extra-aggregate processing. Teoriya i tekhnologiya metallurgicheskogo proizvodstva. Vyp. 1. Magnitogorsk, MGTU, 10-15. (in Russian)
- Shapovalov, A. N. (2012). Development of the through technology for the production of steel of specified quality in the conditions of JSC Ural Steel. Metallurg, (2), 41-43. (in Russian)
- Krasavtsev, N. I., Korneev, Yu. A., Machikin, V. I., & Krasavtsev, I. N. (1975). Extra-Domain Desulphurization of Cast Iron. Kiev, Tekhnika, 120. (in Russian)
- Bornnitsky, I. I., Machikin, V. I, Zhivchenko, V. S., & al. (1979). Vnepechnoe refining of cast iron and steel. Kiev, Tekhnika, 168. (in Russian)
- Kudrin, V. A. (1992). Out-of-furnace treatment of iron and steel. Moscow, Metallurgiya, 336. (in Russian)
- Zhang, M., & Zeng, J. H. (2012). Study on Refining Technology of Low-Sulfur Steel. Advanced Materials Research, 418-420, 196-200.
- Shapovalov, A. N. (2013). Efficiency of the desulfurization of cast iron in the production of high-quality steel in the conditions of JSC Ural Steel. Mashinostroenie: setevoi elektronnyi nauchnyi zhurnal, (1), 34-37. (in Russian)
- Nikulin, A. Yu. (1997). Mathematical modeling of kinetics of dissolution of reagents for out-of-furnace treatment of ferrous metals: Dr. Diss. Magnitogorsk, MGMA, 340. (in Russian)
- Ganchev, A. V., Gonzalez, O., Chizhikova, V. M., & al. (1992). To the mathematical model of out-of-furnace desulphurization of cast iron. Izvestiya vuzov. Chernaya metallurgiya, (7), 16-19. (in Russian)