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Application of DEM to evaluate and compare process parameters for a particle failure under different loading conditions

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Abstract

The paper presents an application of Discrete Element Modelling (DEM) in understanding the micro-process parameters of a particle failure under different loading conditions. A composite particle has been modelled using many primary particles to represent a quasi-homogeneous particle. Some of the examples of quasi-homogeneous particles are constituents of tablets, pellets, granules and concrete. These particles can behave differently under identical loading conditions even though they consist of same primary particles and proportions. This is a typical behaviour of such particles which is governed by the imperfections present in the particles. A DEM has been used to model the composite particle consisting of bi-modal distribution (smaller particles—matrices and larger particles—aggregates) of primary particles. The particle has been loaded under single plate compression, double plate compression and normal impact on different types of target. The single plate compression and normal impact experiments have also been performed. Process parameters like, fracture pattern, particle size distribution, liberation degree and new surface generation have been evaluated and compared. The results are applicable in understanding the particle failure under different processing operations like, transportation, handling and comminution. The results are also useful in selecting the better loading method for liberating aggregates from cheaper matrices for recycling.

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Authors and Affiliations

  1. Commonwealth Scientific and Industrial Research Organization, CSIRO, Earth Science and Resource Engineering, Queensland Centre for Advanced Technologies, PO Box 883, Kenmore, QLD, 4069, Australia

    Manoj Khanal

  2. Mechanical Process Engineering, The Otto von Guericke University of Magdeburg, Universitätsplatz 2, 39106, Magdeburg, Germany

    Jürgen Tomas

Authors
  1. Manoj Khanal
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  2. Jürgen Tomas
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Correspondence to Manoj Khanal.

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Khanal, M., Tomas, J. Application of DEM to evaluate and compare process parameters for a particle failure under different loading conditions. Granular Matter 12, 411–416 (2010). https://doi.org/10.1007/s10035-010-0192-9

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  • DOI: https://doi.org/10.1007/s10035-010-0192-9

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