Full pre-crush to sag mills – the case for changing this practice

Powell, Malcolm S., Mainza, Aubrey N., Hilden, Marko H. and Yahyaei, Mohsen (2015). Full pre-crush to sag mills – the case for changing this practice. In: Bern Klein, Kelly McLeod, Reem Roufail and Fisher Wang, International Conference on Semi-Autogenous and High Pressure Grinding Technology 2015. The 6th International Conference on Semi-Autogenous and High Pressure Grinding Technology, Vancouver, BC, Canada, (1-22). 20-24 September 2015.

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Name Description MIMEType Size Downloads
Author Powell, Malcolm S.
Mainza, Aubrey N.
Hilden, Marko H.
Yahyaei, Mohsen
Title of paper Full pre-crush to sag mills – the case for changing this practice
Conference name The 6th International Conference on Semi-Autogenous and High Pressure Grinding Technology
Conference location Vancouver, BC, Canada
Conference dates 20-24 September 2015
Proceedings title International Conference on Semi-Autogenous and High Pressure Grinding Technology 2015
Place of Publication Vancouver, BC, Canada
Publisher Canadian Institute of Mining and Metallurgy (CIM)
Publication Year 2015
Sub-type Fully published paper
Open Access Status Not Open Access
Editor Bern Klein
Kelly McLeod
Reem Roufail
Fisher Wang
Start page 1
End page 22
Total pages 22
Collection year 2016
Language eng
Abstract/Summary The new practice of applying full pre-crushing of SAG mill feed to substantially increase throughput is challenged as retrogressive and inefficient at a time the industry desperately needs to reinvent itself in terms of social license and financial viability. Although successful, the impact on grind size, added downstream grinding and media consumption, and added OPEX is barely noted - providing a biased view of benefits. Alternatives that provide sound mineral processing routes, provide on-line mill control and are markedly cheaper to operate are presented as a potentially more viable and sensible route for both future installations and current expansions.
Keyword Comminution
Process optimization
Pre-crushing
SAG mill capacity increase
Q-Index Code EX
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Conference Paper
Collections: Julius Kruttschnitt Mineral Research Centre Publications
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Created: Wed, 14 Oct 2015, 09:20:39 EST by Mohsen Yahyaei on behalf of Julius Kruttschnitt Mineral Research Centre