The Effect of the Presence of Very Cohesive Geldart C Ultra-Fine Particles on the Fluidization of Geldart A Fine Particle Beds

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Details zur Publikation

Autor(en): Marnani AK, Bück A, Antonyuk S, Van Wachem B, Thevenin D, Tomas J
Zeitschrift: Processes
Jahr der Veröffentlichung: 2019
Band: 7
Heftnummer: 1
ISSN: 2227-9717


Abstract

The effect of the presence of ultra-fines (d < 10 mu m) on the fluidization of a bed containing fine particles (d < 100 mu m), is the subject of this paper. Practically, it can happen due to breakage or surface abrasion of the fine particles in some processes which totally changes the size distribution and also fluidization behaviour. The materials used in this study are both ground calcium carbonate (GCC); fine is CALCIT MVT 100 (Geldart's group A) and ultra-fine is CALCIT MX 10 (group C). The experimental results for different binary mixtures of these materials (ultra-fines have 30%, 50%, or 68% of the total mixture weight) show that the physical properties of the mixtures are close to those of pure ultra-fine powders. Using mean values of the bed pressure drop calculated from several independent repetitions, the fluidization behaviour of different mixtures are compared and discussed. The fluidization behaviour of the mixtures is non-reproducible and includes cracking, channelling and agglomeration (like for pure ultra-fine powders). Increasing the portion of ultra-fine materials in the mixture causes a delay in starting partial fluidization, an increase in the bed pressure drop as well as a delay in reaching the peak point.


FAU-Autoren / FAU-Herausgeber

Bück, Andreas Prof. Dr.-Ing.
Professur für Partikeltechnik


Autor(en) der externen Einrichtung(en)
Otto-von-Guericke-Universität Magdeburg
Technische Universität Kaiserslautern


Zitierweisen

APA:
Marnani, A.K., Bück, A., Antonyuk, S., Van Wachem, B., Thevenin, D., & Tomas, J. (2019). The Effect of the Presence of Very Cohesive Geldart C Ultra-Fine Particles on the Fluidization of Geldart A Fine Particle Beds. Processes, 7(1). https://dx.doi.org/10.3390/pr7010035

MLA:
Marnani, Abbas Kamranian, et al. "The Effect of the Presence of Very Cohesive Geldart C Ultra-Fine Particles on the Fluidization of Geldart A Fine Particle Beds." Processes 7.1 (2019).

BibTeX: 

Zuletzt aktualisiert 2019-27-02 um 13:07