Design for separating performance of grinding media in bead mill by DEM simulation

Shosei Hisatomi, Sho Fukui, Mitsuaki Matsuoka, Yuki Tsunazawa, Chiharu Tokoro, Kyoko Okuyama, Motonori Iwamoto, Yasuyoshi Sekine

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    Smaller grinding media beads in bead mills are well known for determining high grinding performances. However, the post-grinding separation between beads and slurry might be a difficult task, especially in bead mills with centrifugal bead separation, where the separating performances are strongly affected by the shape of the rotors in the mill. Aiming to study and design grinding operations, the discrete element method (DEM) is a powerful tool which allows for predicting the grinding and separating performances in the mill. In this study, by using DEM simulations, we examined the slurry-beads separation in a bead mill and we investigated the influence of the rotor shape on the separating performances. We compared the performances of two kinds of rotors, one with conventional shape and one with outside projections for the activation of the media beads. Results of DEM simulation were in good agreement with experimental results.

    Original languageEnglish
    Pages (from-to)377-383
    Number of pages7
    JournalJournal of the Society of Powder Technology, Japan
    Volume54
    Issue number6
    DOIs
    Publication statusPublished - 2017 Jan 1

    Keywords

    • Bead mill
    • Beads loss
    • Discrete element method
    • Wet grinding

    ASJC Scopus subject areas

    • Process Chemistry and Technology
    • Catalysis
    • Filtration and Separation
    • Fluid Flow and Transfer Processes

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  • Cite this

    Hisatomi, S., Fukui, S., Matsuoka, M., Tsunazawa, Y., Tokoro, C., Okuyama, K., Iwamoto, M., & Sekine, Y. (2017). Design for separating performance of grinding media in bead mill by DEM simulation. Journal of the Society of Powder Technology, Japan, 54(6), 377-383. https://doi.org/10.4164/sptj.54.377