Benchmarking comminution energy consumption for the processing of copper and gold ores

Ballantyne, G. R. and Powell, M. S. (2014) Benchmarking comminution energy consumption for the processing of copper and gold ores. Minerals Engineering, 65 109-114. doi:10.1016/j.mineng.2014.05.017

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Author Ballantyne, G. R.
Powell, M. S.
Title Benchmarking comminution energy consumption for the processing of copper and gold ores
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
Publication date 2014-10-15
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.mineng.2014.05.017
Open Access Status Not yet assessed
Volume 65
Start page 109
End page 114
Total pages 6
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Language eng
Subject 1909 Geotechnical Engineering and Engineering Geology
2210 Mechanical Engineering
1600 Chemistry
2207 Control and Systems Engineering
Abstract A survey of the comminution energy requirements of gold and copper producing mines has been conducted to provide reliable benchmarking data which can be used to compare comminution energy consumption across different mine sites. The total gold and copper production of the mines included in the study equated to 15% and 24% respectively of global production and all of Australian production. The comminution energy per unit metal product has been presented in a graphical form similar to a cost curve. This simple technique allows individual mines to be ranked with respect to energy consumption and clearly displays the potential energy and cost benefits of moving down the graph into more efficient operating regimes. Assuming similar specific energy requirements for other sites, comminution of gold and copper ores can be expected to consume about 0.2% of global, and 1.3% of Australia’s electricity consumption. Efforts to reduce this figure should be aimed at the top third of consumers as they are responsible for 80% of the total consumption. Analysis of the contribution of circuit efficiency, ore competence, grind size and ore grade showed that ore grade was the greatest determinate of specific comminution energy. Therefore, concentrating the ore via gangue rejection or grade engineering prior to grinding is likely to achieve the largest positive effect on comminution energy efficiency.
Keyword Engineering, Chemical
Mining & Mineral Processing
Mining & Mineral Processing
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Julius Kruttschnitt Mineral Research Centre Publications
Official 2015 Collection
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Citation counts: TR Web of Science Citation Count  Cited 16 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 21 times in Scopus Article | Citations
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Created: Wed, 25 Jun 2014, 01:56:28 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre