VertiMill® - development of circuit survey and performance evaluation protocols

Palaniandy, S., Powell, M., Hilden, M., Kermanshahi, K., Allen, J. and Mwansa, S. (2013). VertiMill® - development of circuit survey and performance evaluation protocols. In: David Pollard and Geoff Dunlop, MetPlant 2013: Metallurgical Plant Design and Operating Strategies-World's Best Practice. Metallurgical Plant Design and Operating Strategies (MetPlant 2013), Perth, WA, Australia, (162-175). 15-17 July 2013.

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Name Description MIMEType Size Downloads
Author Palaniandy, S.
Powell, M.
Hilden, M.
Kermanshahi, K.
Allen, J.
Mwansa, S.
Title of paper VertiMill® - development of circuit survey and performance evaluation protocols
Conference name Metallurgical Plant Design and Operating Strategies (MetPlant 2013)
Conference location Perth, WA, Australia
Conference dates 15-17 July 2013
Proceedings title MetPlant 2013: Metallurgical Plant Design and Operating Strategies-World's Best Practice
Series The Australasian Institute of Mining and Metallurgy Publication Series No 5/2013
Place of Publication Carlton, VIC, Australia
Publisher Australasian Institute of Mining and Metallurgy (AusIMM)
Publication Year 2013
Sub-type Fully published paper
ISBN 9781921522925
Editor David Pollard
Geoff Dunlop
Start page 162
End page 175
Total pages 14
Collection year 2014
Language eng
Abstract/Summary Approximately 420 VertiMills® (VTM) have been installed in mineral processing plants throughout the world, mainly in tertiary and regrind applications plus several in secondary grinding duties. Metso Minerals (Metso) and the Julius Kruttschnitt Mineral Research Centre (JKMRC) have commenced a collaborative research program in stirred milling technology focusing on mill performance evaluation, model development and scale-up methodology. Industrial VTMs are being assessed using a consistent circuit survey protocol to evaluate the performance of VTMs in comminution circuits. The survey protocol includes identification and modification of sampling points, appropriate sampling techniques, controlled circuit stability, and best sample analysis practice. To initiate this study four surveys were conducted in the tertiary grind circuit in the Ridgeway Concentrator at Cadia Valley Operations (CVO) that treats the full circuit throughput of over 800 tph. To deal with the high feed rate the site opted to lead the world in the application of stirred mills by installing the largest VTM, at 3000 hp (2240kW) in closed circuit with a hydrocyclone bank. On average the operating work index was 13.1 kWh/t, reducing the secondary grind product by 40 - 50 µm to the required 80 to 100 µm range. The applied specific energy is relatively low in these low-intensity stirred media mills at 2.7 kWh/t. The size specific energy was 24.2 kWh/t-75µm. Based on the survey and operating data the VTM circuit is performing well in this high-throughput tertiary grinding application, producing a sub-100µm product.
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Tue, 23 Jul 2013, 14:10:45 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre