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Numerical modeling of the crushing characteristics of single ore particle based on breakable Voronoi block model

Powder Technology, ISSN: 0032-5910, Vol: 445, Page: 120114
2024
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The study of crushing characteristics of irregular single ore particles is considered crucial for understanding the secondary fragmentation mechanism, predicting particle gradation, and optimizing the gravity flow of ore particles. This study introduces a numerical simulation approach for single particle compression crushing utilizing the Breakable Voronoi block model (BVBM). The paper examines the influence of various parameters including ball diameter, loading speed, softening tensile strength factor, softening factor, and BVBM size on the crushing behavior of ore particles. It provides a suggested value range for each meso-parameter suitable for single particle modeling and crushing characteristics research. Additionally, the paper describes the evolution of BVBM crushing mode, the total number of cracks, and the number of contact bonds under the influence of different softening factors. Soft rock particles with high softening factors exhibit more significant softening behavior and ductility compared to hard rock particles with low softening factors.

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