Applying grinding curves to mill operation and optimisation

Powell, M. S., van der Westhuizen, A. P. and Mainza, A. N. (2009) Applying grinding curves to mill operation and optimisation. Minerals Engineering, 22 7-8: 625-632.


Author Powell, M. S.
van der Westhuizen, A. P.
Mainza, A. N.
Title Applying grinding curves to mill operation and optimisation
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
1872-9444
Publication date 2009
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.mineng.2009.01.008
Volume 22
Issue 7-8
Start page 625
End page 632
Total pages 8
Place of publication Oxford, United Kingdom
Publisher Pergamon
Collection year 2010
Language eng
Subject C1
840399 First Stage Treatment of Ores and Minerals not elsewhere classified
091404 Mineral Processing/Beneficiation
Abstract The operation of AG/SAG mills is sensitive to mill filling, therefore developing grindcurves to relate mill filling to performance indicators such as throughput, power draw, and product size can assist in achieving optimal mill operations. The throughput, power draw, and product size have been shown to peak at different mill filling levels. Establishing grindcurves can assist operators to decide on the best set point for operating their mill. Factors such as mill speed, mill inlet water, feed size distribution, and ore hardness all have an influence on the grindcurve, and form an integral part of the optimisation process. Test work has been conducted at a number of sites to develop grindcurves for different mills treating a range of ores. The results show great promise for use in optimising the operating set points for use in mill control. The methodology for developing grindcurves is described and the results from the case studies performed on fixed and variable speed mills are discussed.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
2010 Higher Education Research Data Collection
ERA 2012 Admin Only
 
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Created: Thu, 26 Nov 2009, 14:07:11 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre