Modeling the disintegration process for ball mills using dem

In the presented work, the method of discrete elements was used, taking into account the processes of grinding the material, to describe the features and modes of operation of drum-type ball mills using typical ore. The applied method of discrete elements, which simulates the movement of balls and rocks in the processing equipment, makes it possible to understand the structure of the flow and the nature of material grinding. It also provides information on the energy dissipated in each collision of discrete particles. The phenomena of energy dissipation determine the nature and intensity of grinding, while the grinding process can be characterized using energy collision spectra. In the presented article, we investigate the quantitative structural changes in a drum-type ball mill at different drum rotation speeds. Modeling shows that changing the speed of rotation of the mill significantly affects the grinding process. To study the grinding process, experimental studies were carried out using a laboratory setup. Based on the data obtained, a three-dimensional dynamic model of the mill was built, including balls and source material. The results obtained can be used to develop a digital twin of technological equipment for predicting the current state of an object and issuing control actions to an automatic control system.

Keywords: Ball mill, grinding, mineral ore, disintegration, simulation, discrete element method, ore preparation, frequency drive, digital twin.
For citation:

Beloglazov I. I., Sabinin D. S., Nikolaev M. Yu. Modeling the disintegration process for ball mills using dem. MIAB. Mining Inf. Anal. Bull. 2022;(6−2):268—282. [In Russ]. DOI: 10.25018/0236_1493_2022_62_0_268.

Acknowledgements:
Issue number: 6
Year: 2022
Page number: 268-282
ISBN: 0236-1493
UDK: 622.73.004.94
DOI: 10.25018/0236_1493_2022_62_0_268
Article receipt date: 14.01.2022
Date of review receipt: 01.04.2022
Date of the editorial board′s decision on the article′s publishing: 10.05.2022
About authors:

Beloglazov I. I., Cand. Sci. (Eng.), Associate Professor of department of Automation of Technological Processes and Production,, https://orcid.org/0000-0002-1224-2117, St. Petersburg Mining University, St. Petersburg, 199106, Russia, St. Petersburg, Vasilievsky Island, 21 line 2 Beloglazov_ii @ pers .spmi.ru;
Sabinin D. S., Master’s student of the Department of Automation of Technological Processes and Production of St. Petersburg Mining University, St. Petersburg, 199106, Russia, St. Petersburg, Vasilievsky Island, 21 line 2, s202608@stud.spmi.ru;
Nikolaev M. Yu., Master’s student of the Department of Automation of Technological Processes and Production of St. Petersburg Mining University, St. Petersburg, 199106, Russia, St. Petersburg, Vasilievsky Island, 21 line 2, misha1999181@gmail.com.

 

For contacts:

Beloglazov Ilya Ilyich, e-mail: Beloglazov_ii@pers.spmi.ru.

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