EPJ Web Conf.
Volume 249, 2021Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media
|Number of page(s)||4|
|Published online||07 June 2021|
Hydrophobic and raw glass beads flow behavior under different processing conditions
Université de Lorraine, Laboratoire d’Energétique et de Mécanique Théorique et Appliquée (LEMTA), CNRS, UMR 7563, Vandoeuvre-lés-Nancy, F-54500, France.
2 Université de Lorraine, Laboratoire d’Ingénierie des Biomolécules (LIBio), 2 avenue de la Forêt de Haye, TSA 40602, 54518 Vandoeuvre-lès-Nancy, France.
3 GRASP, Institute of Physics B5a, University of Liège, B4000 Liège, Belgium.
Published online: 7 June 2021
Controlling the powder flow by the surface properties of the particles as well as understanding their flowability under different processing dynamics are amongst the major challenges of the powder industry. Indeed, handling large quantities needs powders with good flowability, adequate compressibility and few electrostatic charges. We have performed a chemical treatment in order to obtain hydrophobic glass bead and its bulk behavior has been compared with raw glass bead. We characterized flow properties under different processing conditions. Both powders presented similar flow behavior in the free fall measurement, however hydrophobic glass bead showed lower flow behavior under flow with rotating drum. Also, hydrophobic glass bead presented negative and raw glass bead almost zero electrostatic charges.
A video is available at https://doi.org/10.48448/ryyr-1y61
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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