HPGR - Frequently Asked Questions

High pressure grinding rolls have featured heavily in recent discussions on LinkedIn and the 4th May posting.

An article by Chris Morley of Fluor Australia (presently with Ausenco Minerals, Australia) endeavours to answer frequently asked questions on the subject of high pressure grinding roll technology, with particular reference to its application in the hard rock minerals processing sector.

This is one of 7 papers selected from MEI's Comminution '08 conference in Falmouth that have been published in a special issue of the Journal of the Southern African Institute of Mining and Metallurgy, Volume 110 Number 3 (2010). Another of these papers, by P. Rosario and R. Hall of the University of British Columbia, Canada, presents a structure for comparison of the energy requirements for HPGR versus SAG mill when considering complete circuits for comminution of precious and base metal hard ores. The papers are available on the SAIMM website.

A further 18 papers from the conference were published in a special issue of Minerals Engineering, Volume 22 Numbers 7-8 (2009) (see ScienceDirect) and all papers presented are available in unrefereed form on the Proceedings CD.