Abstract
A century after the first attempts of Wentworth to characterise the shape of cobbles, our understanding of particle morphology is still expanding. A plethora of shape indices has been proposed in the literature to characterise the morphology of individual particles. This study aims to shed light on the merits and limitations of the indices currently used to characterise particle elongation, flatness and compactness, adopting a unified classification framework. Second, new indices are proposed to address the identified shortcomings. Third, a new particle classification system derived from the proposed indices is illustrated. It is shown the new system overcomes the misclassification of a range of particles that are incorrectly classified as bladed in the Zingg system.
Original language | English |
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Pages (from-to) | 689-695 |
Number of pages | 7 |
Journal | Powder Technology |
Volume | 396 |
Issue number | Part B |
Early online date | 23 Nov 2021 |
DOIs | |
Publication status | Published - Jan 2022 |
Externally published | Yes |
Bibliographical note
Funding Information:We acknowledge Newcastle University for the doctoral scholarship of the first author. This work was partially supported by EPSRC grant No. EP/V053655/1 RAILSANDING - Modelling Particle Behaviour in the Rail-Wheel Interface.
Publisher Copyright:
© 2021 The Authors
Keywords
- Morphology characterisation
- Non-spherical particles
- Particle form
- Particle shape classification
ASJC Scopus subject areas
- General Chemical Engineering