Skip navigation

On the use of a powder rheometer to characterize the powder flowability at low consolidation with torque resistances

On the use of a powder rheometer to characterize the powder flowability at low consolidation with torque resistances

Salehi Kahrizsangi, Hamid, Barletta, Diego, Poletto, Massimo, Schutz, Denis and Romirer, Richard (2017) On the use of a powder rheometer to characterize the powder flowability at low consolidation with torque resistances. AIChE Journal, 63 (11). pp. 4788-4798. ISSN 0001-1541 (Print), 1547-5905 (Online) (doi:https://doi.org/10.1002/aic.15934)

[img]
Preview
PDF (Author's Accepted Manuscript)
25500 SALEHI-KAHRIZSANGI_Powder_Rheometer_To_Characterize_Powder_Flowability_(AAM)_2017.pdf - Accepted Version

Download (792kB) | Preview

Abstract

The Anton Paar Powder Cell was used to measure the torque necessary to rotate an impeller in beds of glass beads, sand and alumina powders aerated between no aeration to the minimum for fluidization. Measured torque values depend on the material tested, on the air flow rate applied, on the impeller depth and on the height of the impeller blade. The effect of the impeller depth is linear for low impeller depth and is less than linear at high depth values. A model was developed for the interpretation of the experimental results based on the idea that the material is shearing on the surface described by the impeller rotation. The model allows to estimate an effectiveness of the impeller in the torque determination and also to predict the torque for the impeller at the at deepest positions at which the wall effects have to be considered. © 2017 American Institute of Chemical Engineers AIChE J, 2017

Item Type: Article
Uncontrolled Keywords: aerated powders, torque measurement and estimation, powder flowability, powder cell, low consolidation
Subjects: Q Science > Q Science (General)
T Technology > TA Engineering (General). Civil engineering (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > School of Engineering (ENN)
Last Modified: 16 Oct 2019 10:36
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
URI: http://gala.gre.ac.uk/id/eprint/25500

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics