Building a model of the impact grinding mechanism in a tumbling mill based on data visualization

Authors

DOI:

https://doi.org/10.15587/1729-4061.2023.283073

Keywords:

tumbling mill, intra-chamber loading, impact action, flight zone, similarity criteria, grinding performance

Abstract

A mathematical model was built based on data visualization for the impact grinding mechanism in a tumbling mill, which is mainly implemented during coarse grinding.

The determination of impulse interaction parameters is problematic due to the difficulty of modeling and the complexity of hardware analysis of the behavior of intramill loading.

Conceptually, it was envisaged to identify the relative dynamic parameters of the impact action as components of the model, which are criteria for the similarity of the loading movement and the grinding process. Impact power was taken as an analog of grinding performance. The initial characteristic of the impact was considered to be the averaged vertical component of the speed of loading movement in the flight zone at the boundary of contact with the shear layer. The formalization of the model revealed the effect on the performance of the mass fraction of the flight zone and the reversibility of loading.

The method of numerical modeling was applied, based on experimental visualization of the behavior of granular loading in the cross section of a rotating chamber.

The influence of the rotation speed on the performance at a chamber filling degree of 0.45 and a relative particle size of a milling load of 0.0104 was estimated by experimental simulation. The maximum productivity value was found at the relative speed of rotation ψω=1–1.05. A rational condition for impact grinding at ψω=0.75–0.9 has been established.

The test proved the effectiveness of using visualization to evaluate dynamic loading interaction analogs. Verification of modeling results was implemented by comparison with the data of the technical standard. The use of similarity criteria unifies approaches to modeling different mechanisms of destruction.

The model built makes it possible to predict the rational parameters of the grinding processes by impact, crushing, and abrasion

Author Biographies

Yuriy Naumenko, National University of Water and Environmental Engineering

Doctor of Technical Sciences, Associate Professor

Department of Construction, Road, Reclamation, Agricultural Machines and Equipment

Kateryna Deineka, National University of Water and Environmental Engineering

PhD, Teacher of the Highest Category

Rivne Technical Vocational College

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Building a model of the impact grinding mechanism in a tumbling mill based on data visualization

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Published

2023-06-30

How to Cite

Naumenko, Y., & Deineka, K. (2023). Building a model of the impact grinding mechanism in a tumbling mill based on data visualization. Eastern-European Journal of Enterprise Technologies, 3(7 (123), 65–73. https://doi.org/10.15587/1729-4061.2023.283073

Issue

Vol. 3 No. 7 (123) (2023): Applied mechanics

Section

Applied mechanics

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Copyright (c) 2023 Yuriy Naumenko, Kateryna Deineka

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