A multi-component appearance function for the breakage of coal

Ozer, Can E. and Whiten, William J. (2012) A multi-component appearance function for the breakage of coal. International Journal of Mineral Processing, 104-105 37-44. doi:10.1016/j.minpro.2011.11.014


Author Ozer, Can E.
Whiten, William J.
Title A multi-component appearance function for the breakage of coal
Journal name International Journal of Mineral Processing   Check publisher's open access policy
ISSN 0301-7516
Publication date 2012-03-20
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.minpro.2011.11.014
Volume 104-105
Start page 37
End page 44
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2012
Language eng
Formatted abstract The breakage of a coal in compression tests has been studied with the aim of obtaining an appearance function giving the distribution resulting from the breakage of each particle type, which can be used in the simulation of vertical spindle mills that are commonly used in coal fired power plants. The appearance functions from the compression tests were found to take a linear form on logit axes (log(x/(xm − x))), thus giving a simpler description than is available on other axes. In common with other breakage analysis methods the lines can be identified by the percent passing one tenth of the initial size, the t10 parameter. An exponential relation between t10 and specific energy was found for each particle group defined by size and density and the parameters of the exponential relation were related to the particle size and density. It was found for this particular coal that breakage did not preferentially concentrate either coal or mineral matter.

The relations developed allow the generation of a three dimensional breakage-appearance function for the breakage of both size and density components which can be used in the simulation of a pulveriser for the coal tested. The paper also demonstrates the type of test work required for the generation of appearance functions for other types of coal.
Keyword Multi-component comminution
Particle bed breakage
Multi-component appearance (breakage)
Function
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 8 December 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
Official 2012 Collection
Sustainable Minerals Institute Publications
 
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