Developments in incremental rock breakage testing methodologies and modelling

Bonfils, Benjamin, Ballantyne, Grant R. and Powell, Malcolm S. (2016) Developments in incremental rock breakage testing methodologies and modelling. International Journal of Mineral Processing, 152 16-25. doi:10.1016/j.minpro.2016.04.010

Author Bonfils, Benjamin
Ballantyne, Grant R.
Powell, Malcolm S.
Title Developments in incremental rock breakage testing methodologies and modelling
Journal name International Journal of Mineral Processing   Check publisher's open access policy
ISSN 0301-7516
Publication date 2016-06-10
Sub-type Article (original research)
DOI 10.1016/j.minpro.2016.04.010
Open Access Status Not Open Access
Volume 152
Start page 16
End page 25
Total pages 10
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2017
Language eng
Formatted abstract
collisions, accumulating internal damage resulting in body or surface breakage of particles. Incremental breakage, as it is known, occurs across a wide range of equipment and milling operations. The authors have investigated the probability of breakage during these repetitive impacts. A standardised procedure has been developed for incremental breakage testing where unbroken particles are selected for re-breakage after each breakage event. Breakage probability is then calculated from the relative mass of broken particles. The test results show that incremental breakage occurs under repetitive impacts and the JKRBT is a suitable device for incremental testing. The Vogel and Peukert method for multiple impacts has been modified to more accurately account for size dependency. The influence of particle shape, on the minimum energy of comminution, or threshold energy, Emin, and the applicability of the proposed approach to model the breakage probabilities are discussed.
Keyword Comminution
Low energy impacts
Incremental breakage
Breakage modelling
Breakage probability
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
HERDC Pre-Audit
Sustainable Minerals Institute Publications
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Created: Thu, 21 Jul 2016, 14:47:50 EST by Benjamin Bonfils on behalf of Julius Kruttschnitt Mineral Research Centre