Comparison of DEM and experiment for a scale model SAG mill

Cleary, Paul W., Morrisson, Rob and Morrell, Steve (2003) Comparison of DEM and experiment for a scale model SAG mill. International Journal of Mineral Processing, 68 1-4: 129-165. doi:10.1016/S0301-7516(02)00065-0

Author Cleary, Paul W.
Morrisson, Rob
Morrell, Steve
Title Comparison of DEM and experiment for a scale model SAG mill
Journal name International Journal of Mineral Processing   Check publisher's open access policy
ISSN 0301-7516
Publication date 2003-01
Sub-type Article (original research)
DOI 10.1016/S0301-7516(02)00065-0
Volume 68
Issue 1-4
Start page 129
End page 165
Total pages 37
Editor R. P. King
Place of publication Netherlands
Publisher Elsevier Science B.V.
Collection year 2003
Language eng
Subject C1
290702 Mineral Processing
640399 Other
Abstract Predictions of flow patterns in a 600-mm scale model SAG mill made using four classes of discrete element method (DEM) models are compared to experimental photographs. The accuracy of the various models is assessed using quantitative data on shoulder, toe and vortex center positions taken from ensembles of both experimental and simulation results. These detailed comparisons reveal the strengths and weaknesses of the various models for simulating mills and allow the effect of different modelling assumptions to be quantitatively evaluated. In particular, very close agreement is demonstrated between the full 3D model (including the end wall effects) and the experiments. It is also demonstrated that the traditional two-dimensional circular particle DEM model under-predicts the shoulder, toe and vortex center positions and the power draw by around 10 degrees. The effect of particle shape and the dimensionality of the model are also assessed, with particle shape predominantly affecting the shoulder position while the dimensionality of the model affects mainly the toe position. Crown Copyright (C) 2003 Published by Elsevier Science B.V. All rights reserved.
Keyword Engineering, Chemical
Mining & Mineral Processing
Sag Mill
Discrete Element Method
Wet Tumbling Mills
Power Draw
Ball Mills
Charge Motion
Q-Index Code C1

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Created: Tue, 14 Aug 2007, 19:24:05 EST