Coal breakage characterisation. Part 2: multi-component breakage modelling

Shi, Fengnian (2014) Coal breakage characterisation. Part 2: multi-component breakage modelling. Fuel, 117 PARTB: 1156-1162. doi:10.1016/j.fuel.2013.07.026

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Author Shi, Fengnian
Title Coal breakage characterisation. Part 2: multi-component breakage modelling
Journal name Fuel   Check publisher's open access policy
ISSN 0016-2361
Publication date 2014-01-30
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.fuel.2013.07.026
Open Access Status
Volume 117
Start page 1156
End page 1162
Total pages 7
Place of publication Oxford, United Kingdom
Publisher Elsevier
Collection year 2014
Language eng
Formatted abstract
• A multi-component model to describe energy–size reduction for various coal particle sizes and densities.
• Model parameters calibrated with JKFBC characterisation testing data.
• Using tn-family of curves to determine product size distribution from the model predicted t10 parameter.
• Model was validated with over 100 sets experimental data using an Australian and a Chinese coal sample.

A multi-component breakage model has been developed at the Julius Kruttschnitt Mineral Research Centre (JKMRC) to describe the energy–size reduction in relation to particle size and density for coal breakage characterisation. The model takes the following form: t10(M / (RD/RDmin)c ) · {1 − exp[−𝑓mat · 𝑥 · E]}. The model incorporates four parameters and fits 60 JKFBC (JK Fine-particle Breakage Characteriser) test data for each of the Australian coal and Chinese coal samples, with R2 = 0.982 and 0.978 respectively. The multi-component model can be switched into a single component model by setting c = 0.

A set of tn-family of curves for coals ground in the JKFBC are presented. It was found that the data from various particle sizes and densities of the two coal samples, collected from the Australian and Chinese power stations, all fall on similar tn-curve trend lines. These tn-family of curves can be used in the multi-component model to estimate the product size distribution from the predicted t10 values. A procedure has been developed to calibrate the multi-component model with seven tests based on a combination of various particle sizes, coal densities and grinding energy levels, using the JKFBC device. Over 100 sets of data have been used to validate the calibration procedure.
Keyword Coal
Breakage characterisation
HGI test
Multi-component breakage model
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 31 July 2013

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
Official 2014 Collection
Sustainable Minerals Institute Publications
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Citation counts: TR Web of Science Citation Count  Cited 8 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 11 times in Scopus Article | Citations
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Created: Tue, 29 Oct 2013, 14:37:09 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre