Assessing the energy efficiency of a jaw crusher

Daniel Antonio Legendre, Ron Zevenhoven

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    26 Citeringar (Scopus)

    Sammanfattning

    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.
    OriginalspråkOdefinierat/okänt
    Sidor (från-till)119–130
    Antal sidor12
    TidskriftEnergy
    Volym74
    UtgåvaSpecial Issue
    DOI
    StatusPublicerad - 2014
    MoE-publikationstypA1 Tidskriftsartikel-refererad

    Nyckelord

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

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