Estimating breakage of fine ore particles by media in a small ball mill using DEM

Morrison, R. and Cleary, P. (2010). Estimating breakage of fine ore particles by media in a small ball mill using DEM. In: XXV International Mineral Processing Congress - IMPC 2010 'Smarter processing for the future. International Mineral Processing Congress 2010, Brisbane, QLD, Australia, (3287-3297). 6-10 September 2010.

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Author Morrison, R.
Cleary, P.
Title of paper Estimating breakage of fine ore particles by media in a small ball mill using DEM
Conference name International Mineral Processing Congress 2010
Conference location Brisbane, QLD, Australia
Conference dates 6-10 September 2010
Convener Ralph J. Holmes
Proceedings title XXV International Mineral Processing Congress - IMPC 2010 'Smarter processing for the future
Journal name XXV International Mineral Processing Congress 2010, IMPC 2010
Place of Publication Carlton, VIC, Australia
Publisher Australasian Institute of Mining and Metallurgy
Publication Year 2010
Year available 2010
Sub-type Fully published paper
ISBN 9781921522284
1921522283
Volume 4
Start page 3287
End page 3297
Total pages 11
Collection year 2011
Language eng
Abstract/Summary Most DEM analyses of ball and stirred mills reported to date have considered only media motion and its interaction with the mill lifter configuration. For SAG mills, a large fraction of the feed material can already be well represented in DEM models. But for other mill types with much finer feed, the number of feed particles has been prohibitive to include them directly in the calculations. The C-MIS code is now sufficiently powerful to allow inclusion of ore particles within a short periodic section of a small pilot (or large lab) scale mill. This provides the opportunity to better understand the effect of media on the interstitial bed of powder and of the powder on the media. In this paper, the complete pilot mill was first simulated with media only included. A truncated size distribution was then used to represent ore particles in a periodic simulation of about one tenth of the mill length. The results allowed for analysis of the effect of rock on the overall flow, and the influence of the fl ow and collisional environment on the fine ore particles. The normal, shear and total energy consumptions were also analysed for different powder fi ll levels.
Keyword Ball mill
Grinding
Comminution
Breakage
DEM
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Tue, 14 Dec 2010, 13:52:56 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre