Improving energy efficiency of the ore preparation process based on analyzing energy consumption of semi-autogenous grinding mills

Roman V. Klyuev
Moscow Polytechnic University, Moscow, Russian Federation
Mining Industry Journal (Gornaya Promyshlennost) №5/ 2026 p. 142-146

Summary: In conditions when easily accessible ore reserves are depleting and the energy tariffs are rising, improving the energy efficiency of mining and processing plants is becoming a critical task. Ore preparation processes, particularly operation of semiautogenous grinding mills, which are major electricity consumers, hold the greatest optimization potential. The aim of this work is to analyze the actual energy consumption of a semi-autogenous grinding mill at the Kochkar gold ore deposit to develop practical recommendations for reducing specific energy costs. The study employs a comprehensive approach combining the Bond method for calculating the ore work index, direct measurements of electrical parameters (current, voltage, power) using AR5 and PKK-57 analyzers, and processing of statistical data using Python and MathCAD. The key results show that the average work index is 1.01 kWh/t; however, a weak correlation between the throughput and active power was identified. It was found that short-term interruptions in the ore feed fail to produce proportional energy savings. The practical significance of this work lies in justifying the need of transition to adaptive control systems and digital twins, which could reduce specific energy consumption by 10–15% and enhance the stability of the technological process.

Keywords: energy efficiency, semi-autogenous grinding mill, energy audit, specific energy consumption, Bond’s method, gold ore deposit, optimization of process parameters

For citation: Klyuev Roman V. Improving energy efficiency of the ore preparation process based on analyzing energy consumption of semi-autogenous grinding mills. Mining Industry Journal (Gornaya Promyshlennost). 2026;(5):142–146. https://doi.org/10.30686/1609-9192-2026-5-142-146

Article info

Received: 05.06.2026

Revised: 01.07.2026

Accepted: 06.07.2026

Authors info

Klyuev Roman V. – Dr. Sci. (Eng.), Professor of Department Automation and Control, Moscow Polytechnic University, Moscow, Russian Federation; https://orcid.org/0000-0003-3777-7203; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

References

1. Vidayev I.G., Martyushev N.V., Ivashutenko A.S., Bogdan A.M. The resource efficiency assessment technique for the foundry production. Advanced Materials Research . 2014;880:141–145. https://doi.org/10.4028/www.scientific.net/AMR.880.141

2. Ardashkin I.B., Yakovlev A.N., Martyushev N.V. Evaluation of the resource efficiency of foundry technologies: methodological aspect. Advanced Materials Research . 2014;1040:912–916. https://doi.org/10.4028/www.scientific.net/AMR.1040.912

3. Golik V.I., Hasheva Z.M., Galachieva S.V. Diversification of the economic foundations of depressive mining region. The Social Sciences . 2015;10(6):746–749. Available at: https://makhillpublications.co/view-article/1818-5800/sscience.2015.746.749 (accessed: 09.03.2026).

4. Malozyomov B.V., Golik V.I., Brigida V., Kukartsev V.V., Tynchenko Y.A., Boyko A.A., Tynchenko S.V. Substantiation of drilling parameters for undermined drainage boreholes for increasing methane production from unconventional coal-gas collectors. Energies. 2023;16(11):4276. https://doi.org/10.3390/en16114276

5. Kovalsky E.R., Kongar-Syuryun Ch.B. Reduction of mineral losses in the development of potash seams at great depth. Sustainable Development of Mountain Territories. 2025;17(4):1852–1862. (In Russ.) https://doi.org/10.21177/1998-4502-2025-17-4-1852-1862

6. Balovtsev S.V., Merkulova A.M. Comprehensive assessment of buildings, structures and technical devices reliability of mining enterprises. Mining Informational and Analytical Bulletin. 2024;(3):170–181. (In Russ.) https://doi.org/10.25018/0236_1493_2024_3_0_170

7. Zhao X., Yang Y., Sun F., Wang B., Zuo Y., Li M. et al. Enrichment mechanism and exploration and development technologies of high coal rank coalbed methane in south Qinshui Basin, Shanxi Province. Petroleum Exploration and Development . 2016;43(2):332–339. https://doi.org/10.1016/S1876-3804(16)30039-8

8. Shadrunova I.V., Kolodezhna E.V., Gorlova O.E. Dry processing technology for fluorite ore. Mining Informational and Analytical Bulletin. 2023;(2):43–57. (In Russ.) https://doi.org/10.25018/0236_1493_2023_2_0_43

9. Malozyomov B.V., Martyushev N.V., Sorokova S.N., Efremenkov E.A., Qi M. Mathematical modeling of mechanical forces and power balance in electromechanical energy converter. Mathematics. 2023;11(10):2394. https://doi.org/10.3390/math11102394

10. Wang M., Wang X., Liu W. A novel technology of molybdenum extraction from low grade Ni–Mo ore. . 2009;97(1-2):126–130. https://doi.org/10.1016/j.hydromet.2008.12.004

11. Evdokimov S.I., Klykova K.Yu., Rubayeva I.O., Stadnik D.A. Technology of using rough concentrate as carrier minerals. Sustainable Development of Mountain Territories. 2023;15(3):568–580. (In Russ.). https://doi.org/10.21177/1998-4502-2023-15-3-568-580

12. Klyuev R.V. Assessment of energy efficiency improvement strategies for ventilation and hoisting systems during the reconstruction of the Molibden mine. Mining Science and Technology (Russia). 2025;10(1):84–94. https://doi.org/10.17073/2500-0632-2024-10-362

13. Zhukov I.A., Golikov N.S., Martyushev N.V. Design rationalization of the scraper conveyor section by means of an automated method of strength characteristics analysis. Sustainable Development of Mountain Territories . 2022;14(1):142–150. (In Russ.). https://doi.org/10.21177/1998-4502-2022-14-1-142-150

14. Malyukova L.S., Martyushev N.V., Tynchenko V.V., Kondratiev V.V., Bukhtoyarov V.V., Konyukhov V.Y. et al. Circular mining wastes management for sustainable production of camellia sinensis (L.) O. Kuntze. Sustainability . 2023;15(15):11671. https://doi.org/10.3390/su151511671

15. Klyuev R.V. Development of a methodology for planning an experiment to study the parameters of mills at a mining and processing plant. Russian Mining Industry. 2024;(5S):105–109. (In Russ.) https://doi.org/10.30686/1609-9192-2024-5S-105-109

16. Klyuev R.V. Analysis of technological and energy parameters of ball mills. Russian Mining Industry . 2024;(6):107– 110. (In Russ.) https://doi.org/10.30686/1609-9192-2024-6-107-110