?FEATURED UPD COE FACULTY PUBLICATION
Check out Dr. Djoan Kate Tungpalan et al.'s new publication entitled "The Role of Vein-Type Mineralisation in Mineral Liberation" published on Minerals Engineering, Elsevier, Volume 116.
? The article is accessible within library networks and via remote access on https://doi.org/10.1016/j.mineng.2017.07.001
• Veins contribute to an increased degree of liberation.
• Veins allow liberation to occur at coarser particle size.
• The scale at which liberation analysis is undertaken is important.
• Core scale textural data improves prediction in geometallurgical characterisation.
• Veins can be used as proxy to liberation in geometallurgical characterisation.
This paper provides a further investigation of the role of vein structures in the ease of mineral liberation by random masking simulation of breakage. A copper porphyry ore with vein-type mineralisation underwent different methods of sample preparation for liberation analysis. A selected core was cut into semicircular slabs and another core underwent crushing. The slabs and the crushed particles were analysed in the MLA and subjected to simulated breakage from which the liberation of sulphides was determined. The result was linked with the liberation measured from particles of the same ore that have undergone actual breakage. The analysis further provided an indication of the significant contribution of veins in liberation. This information points out to a proper approach of texture and liberation analyses, and the better use of textural data from core scale logging relevant to mineral processing.
Dr. Djoan Kate Tungpalan is an Assistant Professor in the Department of Mining, Metallurgical, and Materials Engineering.
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