Print Email Facebook Twitter On the fluidization of cohesive powders Title On the fluidization of cohesive powders: Differences and similarities between micro- and nano-sized particle gas–solid fluidization Author Kamphorst, R. (TU Delft ChemE/Product and Process Engineering) Wu, K. (TU Delft ChemE/Product and Process Engineering) Salameh, S. (Münster University of Applied Sciences) Meesters, G.M.H. (TU Delft ChemE/Product and Process Engineering) van Ommen, J.R. (TU Delft ChemE/Product and Process Engineering) Date 2022 Abstract The fluidization of cohesive powders has been extensively researched over the years. When looking at literature on the fluidization of cohesive particles, one will often find papers concerned with only micro- or only nano-sized powders. It is, however, unclear whether they should be treated differently at all. In this paper, we look at differences and similarities between cohesive powders across the size range of several nanometres to 10s of micrometres. Classification of fluidization behaviour based on particle size was found to be troublesome since cohesive powders form agglomerates and using the properties of these agglomerates introduces new problems. When looking at inter-particle forces, it is found that van der Waals forces dominate across the entire size range that is considered. Furthermore, when looking into agglomeration and modelling thereof, it was found that there is a fundamental difference between the size ranges in the way they agglomerate. Where the transition between the types of agglomeration is located is, however, unknown. Finally, how models are made and agglomerate sizes are measured is currently insufficient to accurately predict or measure their sizes consistently. Subject aggregationcohesionfluidized bedinter-particle forcesnanopowder To reference this document use: http://resolver.tudelft.nl/uuid:31c758bd-77c3-4fb8-9cff-c4db1e757fe1 DOI https://doi.org/10.1002/cjce.24615 ISSN 0008-4034 Source Canadian Journal of Chemical Engineering, 101 (1), 227-243 Part of collection Institutional Repository Document type journal article Rights © 2022 R. Kamphorst, K. Wu, S. Salameh, G.M.H. Meesters, J.R. van Ommen Files PDF Can_J_Chem_Eng_2022_Kamph ... _80_90.pdf 1.5 MB Close viewer /islandora/object/uuid:31c758bd-77c3-4fb8-9cff-c4db1e757fe1/datastream/OBJ/view