Analysis of the concentration in rare metal ores during compression crushing
Journal article, 2018

Given the increasing global demand for rare metals, there is a need for the development of fundamental predictive models to improve extraction processes. Comminution models commonly predict particle size reduction based on the compressive breakage behaviour; however, few of them include mineral concentration or mineral liberation at a coarse scale. This paper focuses on developing a model to predict the mineral concentration of rare metals as a function of the particle size distribution after a cycle of the compression crushing process. In this study, compressive breakage and geochemical analysis experiments were conducted on four different rare metal ores of tantalum and tungsten. The work is divided into two stages: the methodology of modelling particle size and modelling concentration by selecting a bimodal Weibull distribution for calibration. A novel model for simulating the concentration of rare metals as a function of the compression ratio is presented.

Concentration modelling

Weibull analysis

Compression crushing

Rare metals

Element concentration analysis

Critical metals

Author

Lorena Guldris Leon

Chalmers, Industrial and Materials Science, Product Development

Magnus Bengtsson

Chalmers, Industrial and Materials Science, Product Development

Magnus Evertsson

Chalmers, Industrial and Materials Science, Product Development

Minerals Engineering

0892-6875 (ISSN)

Vol. 120 7-18

Increasing yield on Tungsten and Tantalum ore production by means of advanced and flexible control on crushing, milling and separation process.

European Commission (Horizon 2020), 2014-12-01 -- 2017-11-30.

Driving Forces

Sustainable development

Areas of Advance

Production

Subject Categories

Computational Mathematics

Geology

Environmental Sciences

Roots

Basic sciences

DOI

10.1016/j.mineng.2018.01.041

More information

Latest update

6/14/2018