Assessing the energy efficiency of a jaw crusher

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)

Interna författare/redaktörer

Publikationens författare: Daniel Legendre, Ron Zevenhoven
Publiceringsår: 2014
Tidskrift: Energy
Tidskriftsakronym: ENERGY
Volym: 74
Nummer: Special Issue
Artikelns första sida, sidnummer: 119
Artikelns sista sida, sidnummer: 130
Antal sidor: 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

Senast uppdaterad 2020-28-02 vid 06:45

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