Automated characterisation of intergrowth textures in mineral particles. A case study

Castroviejo Bolibar, Ricardo; Pérez-Barnuevo, Laura y Pirard, E. (2013). Automated characterisation of intergrowth textures in mineral particles. A case study. "Minerals engineering", v. 52 ; pp. 136-142. ISSN 0892-6875. https://doi.org/10.1016/j.mineng.2013.05.001.

Descripción

Título: Automated characterisation of intergrowth textures in mineral particles. A case study
Autor/es:
  • Castroviejo Bolibar, Ricardo
  • Pérez-Barnuevo, Laura
  • Pirard, E.
Tipo de Documento: Artículo
Título de Revista/Publicación: Minerals engineering
Fecha: Octubre 2013
Volumen: 52
Materias:
Escuela: E.T.S.I. Minas (UPM) [antigua denominación]
Departamento: Ingeniería Geológica [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The characterisation of mineral texture has been a major concern for process mineralogists, as liberation characteristics of the ores are intimately related to the mineralogical texture. While a great effort has been done to automatically characterise texture in unbroken ores, the characterisation of textural attributes in mineral particles is usually descriptive. However, the quantitative characterisation of texture in mineral particles is essential to improve and predict the performance of minerallurgical processes (i.e. all the processes involved in the liberation and separation of the mineral of interest) and to achieve a more accurate geometallurgical model. Driven by this necessity of achieving a more complete characterisation of textural attributes in mineral particles, a methodology has been recently developed to automatically characterise the type of intergrowth between mineral phases within particles by means of digital image analysis. In this methodology, a set ofminerallurgical indices has been developed to quantify different mineralogical features and to identify the intergrowth pattern by discriminant analysis. The paper shows the application of the methodology to the textural characterisation of chalcopyrite in the rougher concentrate of the Kansanshi copper mine (Zambia). In this sample, the variety of intergrowth patterns of chalcopyrite with the other minerals has been used to illustrate the methodology. The results obtained show that the method identifies the intergrowth type and provides quantitative information to achieve a complete and detailed mineralogical characterisation. Therefore, the use of this methodology as a routinely tool in automated mineralogy would contribute to a better understanding of the ore behaviour during liberation and separation processes.

Más información

ID de Registro: 26163
Identificador DC: http://oa.upm.es/26163/
Identificador OAI: oai:oa.upm.es:26163
Identificador DOI: 10.1016/j.mineng.2013.05.001
URL Oficial: http://www.sciencedirect.com/science/article/pii/S0892687513001428
Depositado por: Memoria Investigacion
Depositado el: 20 May 2014 07:19
Ultima Modificación: 22 Sep 2014 11:40
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