NUST MISIS’ Division in Novotroitsk, Novotroitsk, Russia

A. V. Nefedov, Dean, Candidate of Pedagogical Sciences, Associate Professor
A. A. Chemeris, Student

NUST MISIS, Moscow, Russia

N. A. Chichenev, Doctor of Engineering Sciences, Professor, chich38@mail.ru
I. I. Basyrov, Senior Lecturer

Currently, mining enterprises, including non-ferrous and ferrous metal ores, pay great attention to the reengineering of existing equipment, introduction of new advanced technologies, full automation of process control using high-performance computer systems, improvement of labor organization and the professional development of working personnel. The issues of modernization of Nordberg C150 jaw crusher at the primary crushing site of the underground mine of PJSC Gaisky GOK in order to reduce the cost of its repair and maintenance were considered. The operation of the jaw crusher is characterized by a cyclic mode, which leads to an uneven load on the electric motors and their failure. In addition, the V-belt drive and friction clutches are subject to increased wear, which reduces overall production efficiency. To improve the reliability of the crushing plant, it is proposed to replace the old drive, including an electric motor, a friction clutch and a V-belt drive, with a new drive composed of gear motor and a gear clutch. The kinematic scheme and design of the upgraded jaw crusher are developed, and the type of gear motor and gear clutch is selected. The volume and design of a hydraulic concentrate tank made of sheet steel by welding are determined. As a result of the modernization of the jaw crusher drive, it is possible to simplify its design and reduce the complexity of maintenance and repair by 20 hours per year. Replacing the old drive with a new drive allows increasing the maintenance period and thereby reducing the operating costs. The calculations show that the implementation of the design solutions leads to a decrease in the cost of one ton of extracted ore by 0.12%, to an increase in the profitability of production by 0.67% and to an increase in the profit from sales by 0.80%. Additional capital expenditures are not higher than 2.8 million rubles and are paid off in less than 3 years.

1. Efremov D. B., Stepanov V. M., Chicheneva O. N. Upgrading of the roll emergency pressing mechanism of the two high rolling stand of the rolling mill 2800 of the JSC “Uralskaya Stal”. Steel in Translation. 2020. No. 8. pp. 44–47.
2. Nefedov A. V., Svichkar V. V., Chicheneva O. N. Revamping of the skip hoist for charging the furnace of the foundry division of the CJSC “RIFAR”. Steel in Translation. 2020. No. 7. pp. 50–53.
3. Nefedov A. V., Kitanov A. A., Chichenev N. A. Reengineering of the roller hardening machine of the sheet-rolling shop of JSC Ural Steel. Chernye Metally. 2022. No. 5. pp. 22–26.
4. 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, No. 4. pp. 326–329.
5. 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.
6. 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.
7. Gorbatyuk S. M., Zarapin A. Yu., Chichenev N. A. Retrofit of vibrating screen of Catoca mining company (Angola). MIAB. 2018. No. 1. pp. 143–149.
8. Gorbatyuk S. M., Morozova I. G., Naumova M. G. Development of the working model of production reindustrialization of die steel heat treatment. Izvestiya vuzov. Chernaya metallurgiya. 2017. Vol. 60, No. 5. pp. 410–415.
9. Eronko S. P., Gorbatyuk S. M., Oshovskaya E. V., Starodubtsev B. I. Development of automatic system of gas-dynamic cut-off of slag for converter with rotating vessel shell. Izvestiya vuzov. Chernaya metallurgiya. 2017. Vol. 60, No. 11. pp. 863–869.
10. Nefedov A. V., Novikova Yu. V., Chicheneva O. N. Manipulator for feeding a box with liquid solution for repair of cast iron buckets at blast furnace shop of JSC Ural Steel. Chernye Metally. 2021. No. 8. pp. 4–9.
11. Nefedov A. V., Svichkar V. V., Chicheneva O. N. Re-engineering of equipment to feed the melting furnace with aluminum charge. Proceedings of the 6^th International Conference on Industrial Engineering. Series: Lecture Notes in Mechanical Engineering. Cham : Springer, 2021. Vol. II. pp. 1198–1204.
12. Chichenev N. A. Reengineering of device for slab centering in stand of roughing mill. Metallurgist. 2018. Vol. 62, No. 7-8. pp. 701–706.
13. 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.
14. Albogachiev A. Yu., 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.
15. Polkin V. N. Gaisky Mining and Processing Plant : Modern technologies for each process. Globus. 2020. No. 3(62).
16. TI 00194398-28-07-2013. Plant–Equipment Ratio at Concentration Plant at Gaisky GOK. Gay, 2013. 26 p.
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18. GOST R 50895–96. Toothed Clutches. Specifications. Moscow : Standartinform, 2010. 20 p.