New perspectives on quantitative textural analysis

Pérez-Barnuevo, Laura, Castroviejo Bolibar, Ricardo ORCID: and Pirard, Eric (2013). New perspectives on quantitative textural analysis. In: "The second AusIMM international geometallurgy conference", 30/09/2013 - 02/10/2013, Brisbane, QLD, Australia. pp. 191-197.


Title: New perspectives on quantitative textural analysis
Item Type: Presentation at Congress or Conference (Article)
Event Title: The second AusIMM international geometallurgy conference
Event Dates: 30/09/2013 - 02/10/2013
Event Location: Brisbane, QLD, Australia
Title of Book: Proceedings GeoMet 2013
Date: 2013
Faculty: E.T.S.I. Minas (UPM)
Department: Ingeniería Geológica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Process mineralogy provides the mineralogical information required by geometallurgists to address the inherent variation of geological data. The successful benefitiation of ores mostly depends on the ability of mineral processing to be efficiently adapted to the ore characteristics, being liberation one of the most relevant mineralogical parameters. The liberation characteristics of ores are intimately related to mineral texture. Therefore, the characterization of liberation necessarily requieres the identification and quantification of those textural features with a major bearing on mineral liberation. From this point of view grain size, bonding between mineral grains and intergrowth types are considered as the most influential textural attributes. While the quantification of grain size is a usual output of automated current technologies, information about grain boundaries and intergrowth types is usually descriptive and difficult to quantify to be included in the geometallurgical model. Aiming at the systematic and quantitative analysis of the intergrowth type within mineral particles, a new methodology based on digital image analysis has been developed. In this work, the ability of this methodology to achieve a more complete characterization of liberation is explored by the analysis of chalcopyrite in the rougher concentrate of the Kansanshi copper-gold mine (Zambia). Results obtained show that the method provides valuable textural information to achieve a better understanding of mineral behaviour during concentration processes. The potential of this method is enhanced by the fact that it provides data unavailable by current technologies. This opens up new perspectives on the quantitative analysis of mineral processing performance based on textural attributes.

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Item ID: 26221
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Deposited by: Memoria Investigacion
Deposited on: 20 May 2014 09:53
Last Modified: 22 Sep 2014 11:40
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