Kalhankov Ye., Lysytsia M., Ahaltsov H., Novikova A., Lysytsia N. Dynamics of the interaction between the charge and the protective lining inside the drum ball mills

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Parent Category: Geo-Technical Mechanics, 2024
Category: Geo-Technical Mechanics, 2024, Issue 170

Geoteh. meh. 2024, 170, 65-77

 

DYNAMICS OF THE INTERACTION BETWEEN THE CHARGE AND THE PROTECTIVE LINING INSIDE THE DRUM BALL MILLS

1Kalhankov Ye.   1Lysytsia M.  1Ahaltsov H.  1Novikova A.  2Lysytsia N.

1M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine
2Oles Honchar Dnipro National University

UDC 621.926.4:531.3

Language: English

Abstract. The article is focused on the study of a process of interaction between the charge and the rubber lining inside the drum ball mills, which are used for the disintegration of mineral raw materials in the mining, metallurgical, and cement industries. Special attention is paid to the study of the dynamics of the interaction between the charge and the protective rubber linings inside the mill, wear of the linings and their influence on the productivity of the mills during operation. An important aspect of the research is the analysis of various lining designs and their behavior under dynamic loads.

The study was conducted with the help of numerical modeling with the Rocky DEM software complex, which enables the researches to simulate the interaction between the particles of the charge and the lining surface and to study the dynamics of the motion of the charge segments inside the mill. Two types of linings were modeled: "Plate - Lifter - Plate" and "Plate - Plate". The model took into account parameters such as impact loads, abrasive wear, mill rotation speed and type of material to be charged. A series of experiments was conducted on a laboratory mill to verify the results of numerical modelling. The tests confirmed high accuracy of the obtained data.

The study results showed that the greatest loads on the lining occur in the area of the rollback heel, which is critical in terms of the lining wear. In particular, the "Plate-Plate" lining shows a lower level of wear compared to the "Plate-Lifter-Plate" due to the better dynamic interaction with the charge and reduced impact forces. It was established that correct choice of a lining type can significantly influence the efficiency of material grinding because of reduced rubber aging at the abrasive-fatigue wear and extended service life of the mill linings. The experimental results align with the simulation and industrial test data, hence, confirming the effectiveness of the numerical approach.

The obtained data can be used to improve designs of rubber linings for drum ball mills, which will increase the grinding efficiency and reduce the maintenance costs of the equipment. In particular, the results of the research can applied in the mining, metallurgical and cement industries, where the service life of linings and the reduction of their wear are the key factors for lowering operational costs and improving performance of enterprises.

Keywords: disintegration, grinding, drum mill, rubber lining, modeling, wear.

 

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About the authors:

Kalhankov Yevhen, Engineer in Department of Elastomeric Component Mechanics in Mining Machines, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0002-4759-6687

Lysytsia Mykola, Candidate of Technical Sciences (Ph.D.), Senior Researcher, Senior Researcher in Department of Elastomeric Component Mechanics in Mining Machines, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine, (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0001-6364-8937

Ahaltsov Hennadii, Master of Science, Junior Researcher of Department of Elastomeric Component Mechanics in Mining Machines, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine, (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0001-6296-7573

Novikova Alina, Master of Science, Junior Researcher of Department of Elastomeric Component Mechanics in Mining Machines, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine, (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0002-4861-0196

Lysytsia Natalia, Master of Science, Assistant of computer technologies department, faculty of applied mathematics, Oles Honchar Dnipro National University, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0001-9838-9533