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Discrete element method study on the percolation process of fine particles in ore drawing by the block caving method

Tao Li, An-Xiang Wu, Bin Han, Yuntian Feng Orcid Logo, Wei Sun

Chinese Journal of Engineering, Volume: 38, Issue: 11

Swansea University Author: Yuntian Feng Orcid Logo

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DOI (Published version): 10.13374/j.issn2095-9389.2016.11.001

Abstract

To explore the percolation regulation and inducement of waste fine particles in ore drawing by the block caving method, a simulation is undertaken by using discrete element method software EDEM. This simulation contains coarse-to-fine particle amount ratio, diameter ratio and moisture content, and s...

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Published in: Chinese Journal of Engineering
Published: Beijing, China 2016
URI: https://cronfa.swan.ac.uk/Record/cronfa35943
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Abstract: To explore the percolation regulation and inducement of waste fine particles in ore drawing by the block caving method, a simulation is undertaken by using discrete element method software EDEM. This simulation contains coarse-to-fine particle amount ratio, diameter ratio and moisture content, and sets marker particles in different regions to trace the migration of adjacent coarse and fine particles. The results indicate that the ore-drawing advance dilution rate decreases with increasing coarse-to-fine particle amount ratio. The percolation rate of waste fine particles increases with increasing diameter ratio and is significantly affected by moisture content. Moreover, the percolation rate of fine particles is greater than the decline rate of adjacent coarse particles. The results provide a theoretical support for further studying and discussing the ore loss and dilution, determining the stope structure parameters and opti-mizing the ore drawing management system.
Keywords: block caving method, fine particles, percolation, moisture content, discrete element method
College: College of Engineering
Issue: 11