Ore impact breakage characterisation using mixed particles in wide size range

Zuo, Weiran and Shi, Fengnian (2016) Ore impact breakage characterisation using mixed particles in wide size range. Minerals Engineering, 86 96-103. doi:10.1016/j.mineng.2015.12.007


Author Zuo, Weiran
Shi, Fengnian
Title Ore impact breakage characterisation using mixed particles in wide size range
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
1872-9444
Publication date 2016-02-01
Sub-type Article (original research)
DOI 10.1016/j.mineng.2015.12.007
Open Access Status Not Open Access
Volume 86
Start page 96
End page 103
Total pages 8
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Formatted abstract
The Drop Weight Tester (DWT) for ore impact breakage characterisation uses particles in five narrow size fractions, and the JKMRC Rotary Breakage Tester (JKRBT) uses four size fractions, both with three impact energy levels for each size fraction. It is time consuming to prepare these narrowly sized particles and to carry out size analysis on the 15 DWT or 12 JKRBT products, so a Wide-size JKRBT characterisation method was developed. In this method, the mixed particles in 13.2–45 mm size range are tested as one size class in the JKRBT by single-particle breakage mode. The wide-size feed is then divided into several virtual narrow size fractions by simulation, based on which the impact product size distributions are calculated using a size-dependent breakage model. Four sets of measurement data, consisting of two feed samples in the 13.2–45 mm size range with different size distributions tested with two impact energy levels, are adequate to determine the three model parameters. In the case where a benchmark ore of known breakage characteristic parameters is available, one Wide-size JKRBT impact treatment can determine the ore competence change parameter using a t10-based model.
Keyword Breakage characterisation
Size-dependent breakage model
Wide-size JKRBT test
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Sustainable Minerals Institute Publications
 
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