Mineral liberation by high voltage pulses and conventional comminution with same specific energy levels

Wang, Eric, Shi, Feng N. and Manlapig, Emmanuel (2012) Mineral liberation by high voltage pulses and conventional comminution with same specific energy levels. Minerals Engineering, 27-28 28-36. doi:10.1016/j.mineng.2011.12.005


Author Wang, Eric
Shi, Feng N.
Manlapig, Emmanuel
Title Mineral liberation by high voltage pulses and conventional comminution with same specific energy levels
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
1872-9444
Publication date 2012-02-01
Sub-type Article (original research)
DOI 10.1016/j.mineng.2011.12.005
Open Access Status Not yet assessed
Volume 27-28
Start page 28
End page 36
Total pages 9
Place of publication Oxford, United Kingdom
Publisher Pergamon
Language eng
Subject 2207 Control and Systems Engineering
1600 Chemistry
1909 Geotechnical Engineering and Engineering Geology
2210 Mechanical Engineering
Abstract Comparative comminution between high voltage pulses and conventional grinding, at the same specific energy levels, shows that the electrical comminution generates a coarser product with significantly less fines than the mechanical breakage. However, minerals of interest in the electrical comminution product are better liberated than in the conventional comminution with an over 95% statistical significance. There is a potential to use less energy in the electrical comminution to generate the similar degree of mineral liberation as in the mechanical comminution. Distribution of the liberated minerals demonstrates that, in the electrical comminution product, a large percentage of the liberated minerals appear in size fractions coarser than 53 μm; while in the mechanical comminution product, the liberated minerals are accumulated in fine and very fine size fractions. Therefore there may be potential benefits in recovering the coarse liberated minerals in the electrical comminution product, prior to further grinding.
Keyword Mineral liberation
High voltage pulse breakage
Energy efficiency
Mineral recovery
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 2013 Collection
 
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Created: Mon, 23 Jan 2012, 21:07:43 EST by Karen Holtham on behalf of Julius Kruttschnitt Mineral Research Centre