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Estimating comminution indices from ore mineralogy, chemistry and drill core logging

conference contribution
posted on 2023-05-23, 08:29 authored by Julie HuntJulie Hunt, Kojovic, T, Ronald BerryRonald Berry
Geometallurgy aids the understanding of orebody variability through the integration of geological and processing information, thereby enabling spatial mapping of processing (eg comminution or separation) performance across a deposit. In order to do this, estimates of quantitative geometallurgical attributes are needed so that continuous downhole profiles can be generated for each attribute, providing vital data for the development of processing domains through geostatistical modelling. However, as traditional comminution tests are high cost and/or require large samples, current practice typically results in insufficient data density and distribution of comminution indices making it difficult to model and map deposit scale variability. The aim of this work was to find a method to estimate comminution indices based on data that is widely available at mine sites. This data includes mineralogy and chemistry of drill core samples, plus logging information such as lithology and alteration. Work to date indicates that comminution parameters such as semi-autogenous grinding (SAG) Power Index (SPI), Bond Work Index (BWI) and A*b (Julius Kruttschnitt Mineral Research Centre (JKMRC) drop weight test (DWT) Index) can be modelled using chemical and/or mineralogical data. The estimated hardness indices can then be propagated into the mine site database and used in the definition of processing domains that map inherent variability across a deposit. The estimates can thus provide geometallurgical inputs for spatial modelling, mine planning and optimisation initiatives.

History

Publication title

Proceedings of The Second AusIMM International Geometallurgy Conference (GeoMet) 2013

Editors

S Dominy

Pagination

173-176

ISBN

9781921522970

Department/School

School of Natural Sciences

Publisher

The Australasian Institute of Mining and Metallurgy (AusIMM)

Place of publication

Carlton, Australia

Event title

The Second AusIMM International Geometallurgy Conference (GeoMet) 2013

Event Venue

Brisbane, Australia

Date of Event (Start Date)

2013-09-30

Date of Event (End Date)

2013-10-02

Rights statement

Copyright 2013 Australasian Institute of Mining and Metallurgy

Repository Status

  • Restricted

Socio-economic Objectives

Evaluation, allocation, and impacts of land use

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