HPGR model verification and scale-up

Daniel, M. J. and Morrell, S. (2004) HPGR model verification and scale-up. Minerals Engineering, 17 11/12: 1149-1161. doi:10.1016/j.mineng.2004.05.016


Author Daniel, M. J.
Morrell, S.
Title HPGR model verification and scale-up
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
Publication date 2004
Sub-type Article (original research)
DOI 10.1016/j.mineng.2004.05.016
Volume 17
Issue 11/12
Start page 1149
End page 1161
Total pages 13
Editor B. A. Wills
Place of publication Oxford UK
Publisher Elsevier Ltd
Collection year 2004
Language eng
Subject C1
290702 Mineral Processing
640300 First Stage Treatment of Ores and Minerals
Abstract This paper summarises test results that were used to validate a model and scale-up procedure of the high pressure grinding roll (HPGR) which was developed at the JKMRC by Morrell et al. [Morrell, Lim, Tondo, David,1996. Modelling the high pressure grinding rolls. In: Mining Technology Conference, pp. 169-176.]. Verification of the model is based on results from four data sets that describe the performance of three industrial scale units fitted with both studded and smooth roll surfaces. The industrial units are currently in operation within the diamond mining industry and are represented by De Beers, BHP Billiton and Rio Tinto. Ore samples from the De Beers and BHP Billiton operations were sent to the JKMRC for ore characterisation and HPGR laboratory-scale tests. Rio Tinto contributed an historical data set of tests completed during a previous research project. The results conclude that the modelling of the HPGR process has matured to a point where the model may be used to evaluate new and to optimise existing comminution circuits. The model prediction of product size distribution is good and has been found to be strongly dependent of the characteristics of the material being tested. The prediction of throughput and corresponding power draw (based on throughput) is sensitive to inconsistent gap/diameter ratios observed between laboratory-scale tests and full-scale operations. (C) 2004 Elsevier Ltd. All rights reserved.
Keyword Engineering, Chemical
Mineralogy
Mining & Mineral Processing
Comminution
High Pressure Grinding Rolls
Energy Efficiency
Model Verification
Scale-up
Mills
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
2005 Higher Education Research Data Collection
 
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Created: Wed, 15 Aug 2007, 03:21:25 EST