Grinding Solutions at IOM3 Mine to Market Conference

Minerals and Metals Production from Mine to Market Trinity Hall, Cambridge  15-16th Dec 2015

 

In December a 2 day conference, organised by IOM3,  was held at the University of Cambridge entitled Minerals and Metals Production from Mine to Market. It was dedicated to Professor Derek Fray to mark his life-time contributions to and achievements in, minerals processing and extractive metallurgy.

The conference was opened on Tuesday morning by Tony Francis, of Francis Minerals Consulting Ltd, UK, the Chairman of the Organising Committee, and Vasant Kumar of the University of Cambridge, who welcomed the 80 delegates from 18 countries.

Francis, Fray & Kumar

 Tony Francis, Derek Fray and Vasant Kumar

 The conference covered a wide range of subjects from “Smart Blasting” through processing to Ionometallurgy and Automated Mineralogy.

The attendees included noted academics such as Professors Derek Fray, Andrew Abbott, Hylke Glass, John Mohemius, Anita Grozdanov, Carsten Schwandt, Alexsandar Dimittrov, Amimesh Jha, Emutis Juzeliunas and Mari Lundstrom  as well as numerous consultants and operators. The event was sponsored by SGS and Zeiss with media partners International Mining and Barry Wills of MEI.

There was a clear emphasis of the importance of understanding the mineralogy of a deposit rather than just considering the chemical analysis as it is the minerals that control the processing behaviour. David Goldburn (SGS) gave a very good example of how a development project run based on chemistry rather than mineralogy failed and eventually the mineralogy proved that a separation was not possible due to the fine intergrowths of silica in a hematite matrix.

James Strongman (Petrolab) then presented a paper co-authored with colleagues Jake Harrison and Ben Tordoff of Zeiss, on a method for profiling magnetic and gravity response of metalliferous ore using Mineralogic Mining data. This was followed by a paper by Ben Tordoff on the new Carl Zeiss ruggedized on site automated mineralogy equipment and the benefits it brings to operating mines.

These three papers clearly demonstrated the advances in automated mineralogy and the benefits it brings to mining and processing operations.

Recent innovations in mineral biotechnology were highlighted in Barrie Johnsons key note lecture which linked well with Anita Parbhakar-Fox, who presented her paper on the microanalytical characterisation of historic mine waste to assist in determining whether there are economic benefits in reprocessing such materials using modern metallurgical practices.

There were a number of posters presented including one from Nick Wilshaw of Grinding Solutions (a CEEC Advocate) introducing the CEEC Energy Curve, which was well received by many of the delegates. Below is a picture of Nick discussing the poster with Dave Meadows, currently working for Bechtel in the USA.

Dave Meadows & NW Cambridge 2016

From general discussions with various delegates it is clear that the mining industry is still suffering hard times but investments are being made in areas that enable the operators to improve either grades or recoveries or both. Getting more out of what you have seems to be the general thought. Understanding how savings can be made in current operations is very important at these times and the CEEC Energy Curve certainly helps to focus the operators’ minds on where potential savings can be achieved.

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