Assessing the energy efficiency of a jaw crusher

A1 Journal article (refereed)

Internal Authors/Editors

Publication Details

List of Authors: Daniel Legendre, Ron Zevenhoven
Publication year: 2014
Journal: Energy
Journal acronym: ENERGY
Volume number: 74
Issue number: Special Issue
Start page: 119
End page: 130
Number of pages: 12
ISSN: 0360-5442
eISSN: 1873-6785


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 similar to 600 g pieces of rock while measuring electric power during the process are reported.


Comminution, DEM simulation, Energy efficiency, Experiments, Jaw crusher

Last updated on 2020-21-02 at 05:22