Optimisation opputunities for high pressure grinding rolls circuits

Powell, M. S., Hilden, M. M., Evertsson, C. M., Asbjornsson, G., Benzer, A. H., Mainza, A. N., Tavares, L. M., Davis, B., Plint, N. and Rule, C. (2012). Optimisation opputunities for high pressure grinding rolls circuits. In: Peter Hill (Conference Chair), Proceedigs: 11th AusIMM Mill Operators' Conference 2012. 11th AusIMM Mill Operators' Conference 2012, Hobart,Tasmania, (81-94). 29-31 October 2012.

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Name Description MIMEType Size Downloads
Author Powell, M. S.
Hilden, M. M.
Evertsson, C. M.
Asbjornsson, G.
Benzer, A. H.
Mainza, A. N.
Tavares, L. M.
Davis, B.
Plint, N.
Rule, C.
Title of paper Optimisation opputunities for high pressure grinding rolls circuits
Conference name 11th AusIMM Mill Operators' Conference 2012
Conference location Hobart,Tasmania
Conference dates 29-31 October 2012
Proceedings title Proceedigs: 11th AusIMM Mill Operators' Conference 2012
Place of Publication Carlton, Victoria
Publisher AusIMM: Australasian Institute of Mining and Metallurgy
Publication Year 2012
Sub-type Fully published paper
ISBN 9781921522734
Editor Peter Hill (Conference Chair)
Start page 81
End page 94
Total pages 14
Collection year 2013
Language eng
Formatted Abstract/Summary
The Mogalakwena North Concentrator of Anglo Platinum Operations was built with the capability
to allow for future projected expansion. Several research groups, currently working with Anglo
American on collaborative research over a range of projects, were brought in to review the existing
operation, with a view to releasing some specific bottlenecks and providing specialist design input
to the potential plant expansion.
    Based on a thorough review of the high pressure grinding rolls (HPGR) and crushing circuit,
a wide range of de-bottlenecking opportunities were identified. This was followed by a series
of surveys to provide performance measurements and to model the circuit in detail. From this
effort a full simulation of the plant has been developed, including updated models of the HPGR,
crusher, bins and screens. These models have been implemented in the researchers' Model
Development Kit (MDK) version of JKSimMet, and in a prototype dynamic simulator based on
the Matlab Simulink software.
    The observations, measurements and simulations have provided guidance and quantified the
benefits of some proposed circuit modifications. Based on these findings a number of upgrades
are being planned, with the aim of ensuring full utilisation of the installed equipment. The circuit
demonstrates a potential expansion of over 30 per cent through minor improvements, and a 70 per
cent increase in capacity with the addition of some strategic equipment.
    The HPGR-crushing upgrade project demonstrates the potential benefits of nurturing disparate
Research groups into a strong inter-disciplinary technical team capable of supporting operational
needs while developing future technology.
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

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Created: Mon, 05 Nov 2012, 15:04:28 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre