Novotroitsk branch of the National University of Science and Technology “MISIS”, Novotroitsk, Russia

V. S. Zhabin, Student, Dept. of Metallurgical Technologies and Equipment, e-mail: wiktorrus22@gmail.com
A. V. Nefedov, Cand. Ped., Associate Prof., Deputy Director of the Branch for Educational and Methodological Work, Head of the Dept. of Metallurgical Technologies and Equipment, e-mail: cosnovotr@rambler.ru

National University of Science and Technology MISIS, Moscow, Russia
N. A. Chichenev, Dr. Eng., Prof., Dept. of Engineering of Technological Equipment, e-mail: chich38@mail.ru
I. I. Basyrov, Senior Lecturer, Dept. of Engineering of Technological Equipment, e-mail: basirovilnur@mail.ru

The agglomeration production of Ural Steel JSC includes a charge preparation site and an agglomeration site. The raw material for the production of agglomerate is the charge, which is prepared at the charge preparation site using a four-roll crusher for crushing coke. When using existing equipment in an agglomeration shop, a significant disadvantage in its operation is the frequent failure of individual components due to a long service life and a long service life. As a result, device downtime occurs, as a rule, due to the low reliability of the current electric drive. In order to reduce the time of equipment repairs, which arise primarily due to the wear of outdated equipment, it is proposed to modernize the four-roll crusher, which consists in replacing the existing multi-element drive (electric motor, clutch and gearbox) with a coaxial gear motor, which is an appropriate solution for mechanisms operating in a repeated short-term mode. Additional capital expenditures required to modernize the drive of the crushers include the purchase and installation of gear motors, gear couplings and the manufacture of frames for gear motors. The total capital costs for the purchase of equipment, spare parts, logistics and the cost of dismantling old equipment and installing new equipment do not exceed 4.5 million rubles. As a result of this modernization: the cost of production decreased by 0.13 %; profit from sales increased by 0.42 %; the payback period of this event is less than 6 months. The project is efficient, pays off quickly and can be recommended for implementation not only at Ural Steel JSC, but also at other metallurgical enterprises in the industry.

1. Efremov D. B., Stepanov V. M., Chicheneva O. N. Modernization of the mechanism for quick returning of rolls of the rolling stand DUO of the 2800 mill of JSC Ural Steel. Stal. 2020. No. 8. pp. 44–47.
2. Zhiltsov A. P., Melezhik R. S., Vlasenko D. A., Kharitonenko A. A., Bocharov A. V. Validation of parameters and industrial mastering of an elastic finger coupling with an disk-type elastic element in the four-roll crusher`s drive. Izvestiya vuzov. Mashinostroenie. 2022. No. 12. pp. 3–13.
3. Pozhidaev Ya. A., Kadoshnikov V. L. Damping-system design on the basis of electrochemical modules. Russian Engineering research. 2012. Vol. 32, Iss. 5-6. pp. 478–481.
4. Nefedov A. V., Tanchuk A. V., Chichenev N. A. Modernization of car tipper drive at Donskoy Ore Mining and Processing Plant. Gornyi Zhurnal. 2022. No. 8. pp. 52–56.
5. Bardovskiy A. D., Gorbatyuk S. M., Keropyan A. M., Bibikov P. Ya. Assessing parameters of the accelerator disk of a centrifugal mill taking into account features of particle motion on the disk surface. Journal of Friction and Wear. 2018. Vol. 39, Iss. 4. pp. 326–329.
6. Bazhin V. Yu., Glazev M. V. Refractory materials of metallurgical furnaces with the addition of silicon production waste. Non-ferrous Metals. 2022. No. 1. pp. 32–39.
7. Yurshev V. I., Boyko S. V., Kirilenko A. S., Yurshev I. V. Optimization of VK10-HOM cemented carbide mixture pressing modes. Non-ferrous Metals. 2023. No. 2. pp. 57–65.
8. Gorbatyuk S. M., Morozova I. G., Naumova M. G. Development of a working model of reindustrialization process of heat treatment of stamp steels. Izvestiya vuzov. Chernaya metallurgiya. 2017. Vol. 60. No. 5. pp. 410–415.
9. Bardovsky A. D., Gerasimova A. A. Analysis of the drive mechanism of a saw with alternating movement of a flexible cutting element in both directions. MIAB. 2019. No. 7. pp. 132–139. DOI: 10.25018/0236-1493-2019-07-0-132-139
10. Zinyagin A. G. Use of machine learning methods for determination of the boundary conditions coefficients in a FEM task for the case of accelerated cooling of hot-rolled sheet metal. CIS Iron and Steel Review. 2023. Vol. 25. pp. 58–66.
11. Melezhik R. S., Vlasenko D. A. Analysis of dynamics and improvement of the design of the four-roll crusher`s drive. Izvestiya vuzov. Mashinostroenie. 2023. No. 12. pp. 28–37.
12. Nefedov A. V., Svichkar V. V., Chicheneva O. N. Re-engineering of equipment to feed the melting furnace with aluminum charge. Lecture Notes in Mechanical Engineering. 2021. pp. 1198–1204. DOI: 10.1007/978-3-030-54817-9_139
13. Bardovsky A. D., Gerasimova A. A., Basyrov I. I. Study of oscillating process of harp screens. Proceedings of the 4th International Conference on Industrial Engineering. ICIE 2018. Lecture Notes in Mechanical Engineering. 2019. pp. 133–139.
14. Vlasenko D. A. Validation of design parameters and prospects for using corrugated rolls in four-roll crushers. Vestnik DonNTU. 2020. No. 1. pp. 15–22.
15. Makhkambaev S. B., Chichenev N. A. Hydraulic clamp drive of frame filter press for AGMK cadmium workshop, Uzbekistan. Gornyi Zhurnal. 2021. No. 8. pp. 48–51.
16. Albagachiev A. Y., Keropyan A. M., Gerasimova A. A., Kobelev O. A. Determination of rational friction temperature in lengthwise rolling. CIS Iron and Steel Review. 2020. Vol. 19. pp. 33–36.
17. JSC Ural Steel. Productive agglomeration shop. Available at: https://uralsteel.com/about/production/ (accessed: 07.07.2024).
18. SEW-EURODRIVE. Technical description of coaxial cylindrical gear motors of the R..DR/DT/DVseries. Available at: https://sew-eurodrive.nt-rt.ru/images/manuals/soosmr.pdf?ysclid=lx04rf8koo881283223 (accessed: 07.07.2024).
19. F series cylindrical flat geared motors. Available at: https://spb-reduktor.artesk.ru/F.html (accessed: 07.07.2024).
20. GOST R 50895–96. Toothed clutches. Specifications. Introduced: 01.07.1997.