Pre-concentration of copper ores by high voltage pulses. Part 2: opportunities and challenges

Shi, Fengnian, Zuo, Weiran and Manlapig, Emmy (2015) Pre-concentration of copper ores by high voltage pulses. Part 2: opportunities and challenges. Minerals Engineering, 79 315-323. doi:10.1016/j.mineng.2015.01.014

Author Shi, Fengnian
Zuo, Weiran
Manlapig, Emmy
Title Pre-concentration of copper ores by high voltage pulses. Part 2: opportunities and challenges
Journal name Minerals Engineering   Check publisher's open access policy
ISSN 0892-6875
Publication date 2015-08-01
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.mineng.2015.01.014
Open Access Status DOI
Volume 79
Start page 315
End page 323
Total pages 9
Place of publication Pergamon Press
Publisher Kidlington, Oxford United Kingdom
Language eng
Subject 2207 Control and Systems Engineering
1600 Chemistry
1909 Geotechnical Engineering and Engineering Geology
2210 Mechanical Engineering
Abstract The JKMRC has recently reported a novel ore pre-concentration method using high voltage electrical pulses (Part 1 of this paper). The technique utilises metalliferous grain-induced selective breakage under a controlled pulse energy input, and size-based screening to separate the feed ore into body breakage and surface breakage components, leading to ore grade splitting. This technique offers new opportunities for barren pebbles rejection from the AG/SAG mill pebble stream, coarse waste rejection at mine site to reduce the RoM haulage, pre-treatment of AG/SAG mill feed taking the combined advantages of pre-weakening and pre-concentration, and multi-grade comminution and recovery circuits. The challenges for industrial uptake of this technique include ore variation and machine scale up. A diagram describing the pulse energy input in relation to the mass yield, grade, and recovery for various feed particle sizes is proposed for the ore pre-concentration characterisation. The research gaps are discussed and the technical approach is suggested.
Keyword Ore pre-concentration
Coarse waste rejection
High voltage pulses
Electrical comminution
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 2016 Collection
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Citation counts: TR Web of Science Citation Count  Cited 6 times in Thomson Reuters Web of Science Article | Citations
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