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Assessing the energy efficiency of a jaw crusher

Author

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  • Legendre, Daniel
  • Zevenhoven, Ron

Abstract

It is well known and taken for granted that the efficiency of energy use by comminution (i.e. breaking, crushing, grinding) equipment is very low, typically less than 10%. Most of the process input power is dissipated as heat and noise and ineffective deformation of the material to be processed and the device itself. Here, a study is reported that analyses the reasons for this low efficiency and tries to give recommendations for improvement. With a lab-scale jaw crusher as a test case, an optimisation was made on how to operate it most energy-efficiently by using an evolutionary algorithm numerical method. For a selected optimised case an attempt was made to simulate the jaw crusher using a commercial software for discrete element modelling (DEM), after first simulating single particle breakage using this software. Also, some experimental results on the crushing of several ∼600g pieces of rock while measuring electric power during the process are reported.

Suggested Citation

  • Legendre, Daniel & Zevenhoven, Ron, 2014. "Assessing the energy efficiency of a jaw crusher," Energy, Elsevier, vol. 74(C), pages 119-130.
    • Handle: RePEc:eee:energy:v:74:y:2014:i:c:p:119-130
    DOI: 10.1016/j.energy.2014.04.036
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    Citations

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    Cited by:

    1. Zhang, Shirong & Mao, Wei, 2017. "Optimal operation of coal conveying systems assembled with crushers using model predictive control methodology," Applied Energy, Elsevier, vol. 198(C), pages 65-76.
    2. Ruiyue Liu & Boqiang Shi & Guoguang Li & Hongjun Yu, 2018. "Influence of Operating Conditions and Crushing Chamber on Energy Consumption of Cone Crusher," Energies, MDPI, vol. 11(5), pages 1-16, May.
    3. Lei Zhu & Wenzhe Gu & Tianqi Song & Fengqi Qiu, 2022. "Experimental Investigation of Particle Size Alteration and the Selective Crushing Phenomenon of Gangue during the Jaw Crushing Process," Sustainability, MDPI, vol. 14(19), pages 1-15, September.

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