Pre weakening of mineral ores by high voltage pulses

Wang, Eric, Shi, Feng N. and Manlapig, Emmanuel (2011) Pre weakening of mineral ores by high voltage pulses. Minerals Engineering, 24 5: 455-462. doi:10.1016/j.mineng.2010.12.011

Author Wang, Eric
Shi, Feng N.
Manlapig, Emmanuel
Title Pre weakening of mineral ores by high voltage pulses
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
Publication date 2011-04-01
Sub-type Article (original research)
DOI 10.1016/j.mineng.2010.12.011
Open Access Status Not yet assessed
Volume 24
Issue 5
Start page 455
End page 462
Total pages 8
Place of publication United Kingdom
Publisher Pergamon
Language eng
Subject 2207 Control and Systems Engineering
1600 Chemistry
1909 Geotechnical Engineering and Engineering Geology
2210 Mechanical Engineering
Abstract A new comminution method has been developed by applying high voltage pulses at specific energy 1-3 kWh/t to pre-weaken mineral particles, leading to reduction in energy consumption in the downstream grinding process. Four ore samples were tested using high voltage pulses and conventional crushing in parallel for comparison. Evidence of cracks and microcracks measured with X-ray tomography and mercury porosimetry supported the principle of high voltage pulses induced damage on rocks in the electro-comminution process, which resulted in energy saving up to 24% found in this study. Ore surface texture and mineral properties affected the efficiency of high voltage pulse breakage. The feasibility of the electro-comminution and its benefits need to be investigated case by case. © 2010 Elsevier Ltd. All rights reserved.
Keyword Comminution
Energy efficiency
High voltage pulse breakage
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 2012 Collection
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Citation counts: TR Web of Science Citation Count  Cited 37 times in Thomson Reuters Web of Science Article | Citations
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Created: Fri, 06 May 2011, 00:40:17 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre