Nosov Magnitogorsk state technical university (Magnitogorsk, Russia):

S. K. Sibagatullin, Dr. Eng., Prof., Dept. of Metallurgy and Chemical Technologies
A. S. Kharchenko, Cand. Eng., Assocoate Prof., Head of Dept. of Metallurgy and Chemical Technologies
G. Yu. Savchenko, Post-graduate, Dept. of Metallurgy and Chemical Technologies

Magnitogorsk Iron and Steel Works PJSC (MMK) (Magnitogorsk, Russia):

V. A. Beginyuk, Head Specialist of the Technological Group, Blast Furnace Shop

This research looked at the performance of a 1,370 m3 blast furnace in operation at the MMK site after the percent of pellets in the iron ore charge and the ore burden radial distribution at the furnace top were simultaneously changed. In the periods studied, the percent of pellets was within 28–40%. Through changing the charging matrix, one built a burden layer at the furnace top which had different concentrations of iron ore coming from a hopper of the bell-less top (BLT) charging system through sloping chute stations, where stations No. 9–11, 6–8 and 3–5 are characterized by the following iron ore concentration (%): 85–94, 54–58 and 25–40 respectively. As a result, the authors determined what coke and iron ore distribution pattern would be optimal for a blast furnace with a compact BLT charging system depending on the amount of pellets in the burden. When pellets account for 28–30%, the amount of iron ore materials charged in the peripheral zone of the furnace with the sloping chute positioned to Stations 9–11 that proved to be optimal was 85–90%. When the amount of iron ore charged at the above stations was reduced from 94 to 90% while Stations 3-5 saw an increase from 25 to 29% and Station 2 saw a decrease from 45 to 22%, it became possible to cut the consumption of coke by raising the amount of natural gas consumed from 13.1 to 13.9 th m³/h. The natural gas hydrogen utilization rose from 32.2 to 35.4% delivering a 4.6 kg/t of iron reduction in the specific consumption of coke. A 30 to 40% rise in the amount of pellets justified the increased concentration of iron ore in the peripheral zone (from 85–90 to 93–94%). An increase from 85 to 93% made it possible to raise the consumption of natural gas by 1.2 th m3/h reaching a substitution rate of 0.85 kg/m³.

The below findings were obtained under the assignment No. 11.8979.2017/BCh of the Ministry of Education and Science of Russia.

1. Huatao Zhao, Minghua Zhu, Ping Du, Seiji Tagucchi, Hongchao Wei. Uneven Distribution of Burden Materials at Blast Furnace Top in Bell-less Top with Parallel Bunkers. ISIJ. 2012. Vol. 52. No. 12. pp. 2177–2185.
2. Pykhteeva K. B., Zagainov S. A., Tleugabulov B. S., Filippov V. V., Nikolaev F. P., Belov V. V. Stabilizing the composition of blast-furnace products from titanomagnetites with a nonconical loading trough. Steel in Translation. 2009. Vol. 39. pp. 45–49.
3. Sibagatullin S. K., Kharchenko A. S., Devyatchenko L. D., Steblyanko V. L. Improvement of iron ore burden components distribution when charging into blast furnace top by physical and mathematical modeling of fixed effects. Journal of Chemical Technology and Metallurgy. 2017. No. 4 (52). pp. 11–18.
4. Sibagatullin S. K., Kharchenko A. S., Logachev G. N. The rational mode of nut coke charging into the blast furnace by compact trough-type charging device. International Journal of Advanced Manufacturing Technology. 2016. 86. pp. 531–537.
5. Vorontsov V. V., Stepanov A. T. On circumferential distribution of burden materials at the blast furnace top. Vestnik Cherepovetskogo gosudarstvennogo universiteta. 2010. No. 1. pp. 127–130.
6. Lyalyuk V. P., Tovarovsky I. G., Kassim D. A. On circumferential distribution of blast furnace smelting parameters. Stal. 2018. No. 3. pp. 8–13.
7. Vaisberg L. A., Korovnikov A. N., Podgorodetskiy G. S. Improvement of charge preparation systems in blast furnace practice. Chernye Metally. 2017. No. 8. pp. 24–27.
8. Stumper J.-F., Viktor K., Mirkovic T., Josupeit Th., Pethke J. Investigation of distribution of charge material in a blast furnace using 3D section gauge. Chernye Metally. 2017. No. 6. pp. 25–30.
9. Buchwalder J., Dobroskok V. A., Lonardi E., Goffin R., Tillen G., Kuehler S. Advanced blast furnace charging technologies. Chernye Metally. 2008. No. 9. pp. 21–25.
10. Yongfu Zhao, Jerry C. Capo, Steven J. McKnight et al. Development of burden distribution technology at U.S. Steel Canada’s. Hamilton Works ‘E’ blast furnace. Iron & Steel Technology. 2011. No. 1. pp. 52–61.
11. Michinori Hattor, Bungo Iino, Akio Shimomura, Hideaki Tsukiji, Tatsuro Ariyama. Development of Burden Distribution Simulation Model for Bell-less Top in a Large Blast Furnace and Its Application. ISIJ International. 1993. Vol. 33 (1993). No. 10. pp. 1070–1077.
12. Juan Jiménez, Javier Mochón, Jesús Sainz de Ayala. Mathematical Model of Gas Flow Distribution in a Scale Model of a Blast Furnace Shaft. ISIJ International. 2004. Vol. 44. No. 3. pp. 518–526.
13. Tovarovsky I. G. Predictive estimate of the effect produced by the circumferential distribution of burden materials at the top on smelting processes and parameters. Metallurg. 2014. No. 8. pp. 46–52.
14. Tovarovsky I. G., Bolshakov V. I., Togobitsskaya D. N., Khamkhotko A. F. Optimisation of ore burden distribution following a comprehensive analysis of blast furnace processes. Chernaya metallurgiya. Byulleten nauchno-tekhnicheskoi i ekonomicheskoi informatsii. 2008. No. 7. pp. 10–15.
15. Tovarovsky I. G. Analysis of the criteria for evaluation of the circumferential distribution of burden materials and gases in a blast furnace. Chernaya metallurgiya. Byulleten nauchno-tekhnicheskoi i ekonomicheskoi informatsii. 2012. No. 12. pp. 33–38
16. Bolshakov V. I., Gladkov N. A., Shutylev F. M. Optimised distribution of pellets in the cross section of a blast furnace. Metallurgicheskaya i gornorudnaya promyshlennost. 2003. No. 1. pp. 12–15.
17. Semenov Yu. S. Identifying rational charging regimes for a blast furnace with the BLT charging system for the conditions of light charges and inconsistent burden materials. Chernaya metallurgiya. Byulleten nauchno-tekhnicheskoi i ekonomicheskoi informatsii. 2013. No. 12. pp. 14–19.
18. Sibagatullin S. K., Kharchenko A. S., Beginyuk V. A., Selivanov V. N., Chernov V. P. Improving the blast furnace process by raising the natural gas flow rate in the upper heat exchange stage. Vestnik of Nosov Magnitogorsk State Technical University. 2017. Vol. 15. No. 1. pp. 37–44.
19. Chukin M. V., Sibagatullin S. K., Kharchenko A. S., Chernov V. P., Logachev G. N. Influence of coke nut introduction in blast furnace charge on melting parameters. CIS Iron and Steel Review. 2016. Vol. 12. pp. 9–13.
20. Marder B. F., Shvets L. N., Volovik G. A., Tripolets Yu. I., Kalashnyuk P. G. Distribution of burden and gases in a blast furnace and utilization of natural gas during smelting. Metallurgicheskaya i gornorudnaya promyshlennost. 1998. No. 1. pp. 11–15.
21. Bolshakov V. I., Arzamastsev A. N., Lebed V. V., Zherebetsky A. A. Optimisation of burden distribution in Blast Furnace 6 of NLMK. Stal. 2013. No. 1. pp. 2–5.
22. Bolshakov V. I., Roslik N. A., Shutylev F. M., Shuliko S. T., Loginov V. N. Control over gas distribution in a blast furnace with a bell-less top charging system. Stal. 1995. No. 7. pp. 15–19.
23. Kaoru Nakano, Kohei Sunahara, Takanobu Inada. Advanced Supporting System for Burden Distribution Control at Blast Furnace Top. ISIJ International. 2010. Vol. 50. No. 7. pp. 994–999.
24. Zhao-Jie Teng, Shu-Sen Cheng, Peng-Yu Du, Xi-Bin Guo. Mathematical model of burden distribution for the bell-less top of a blast furnace. International Journal of Minerals, Metallurgy, and Materials. 2013, Volume 20, Issue 7, pp. 620–626.
25. Bolshakov V. I. Evaluating the efficiency of using bell-less charging apparatuses on blast furnaces. Metallurgist. 2010, Volume 54, Issue 3-4, pp. 153–157.
26. Sibagatullin S. K., Kharchenko A. S. Identification of an efficient sequence of charging components of raw materials into the hopper of the bell-less charging device of a chute type by physical modeling. Vestnik of Nosov Magnitogorsk State Technical University. 2015. No. 3 (51). pp. 28–34.
27. Sibagatullin S. K., Kharchenko A. S., Devyatchenko L. D., Steblyanko V. L. Improvement of iron ore burden components distribution when charging into blast furnace top by physical and mathematical modeling of fixed effects. Journal of Chemical Technology and Metallurgy. 2017. Vol. 52. No. 4. pp. 694–701.
28. Sibagatullin S. K., Kharchenko A. S., Teplykh E. O. Quality comparison of coke nuts. Koks i khimiya. 2012. Vol. 55. Issue 2. pp. 62–65.
29. Tarasov V. P., Tarasov P. V. Theory and technology of blast furnace smelting. Moscow : Intermet Inzhiniring, 2007. 384 p.
30. Sibagatullin S. K., Kharchenko A. S., Chernov V. P., Beginyuk V. A. Improvement of blast furnace practice due to creation of the conditions for elevation of natural gas consumption via usage of raw materials with increased strength. Chernye Metally. 2017. No. 8. pp. 27–33.
31. Sibagatullin S. K., Kharchenko A. S., Kashapov M. M., Tyapkin S. S., Semenyuk M. A. Identifying rational regimes of iron ore charging in the furnace top with high percent of pellets in the burden. Teoriya i tekhnologiya metallurgicheskogo proizvodstva. 2017. No. 3 (22). pp. 4–9.