CSA Global is pleased to announce authors Dr Bill Shaw from Ore Control, and Dr Andrew Scogings from CSA Global were awarded “Best paper prize for a technical conference” under AusIMM‘s Professional Excellence Award 2017.
“The importance of geometallurgical test work for industrial minerals projects” was delivered at this years’ Tenth International Mining Geology Conference held in Hobart, Tasmania and was voted as the best paper from all those presented at AusIMM conferences during the year.
The award recognises their excellence and significant contribution to the development and application of professional knowledge and practice in the minerals industry.
Managing Director, Jeff Elliott personally thanked them both stating the award was a great accolade and testament to their commitment to the profession and industry.
The award will be presented at the AusIMM Awards Dinner, to be held in conjunction with Congress 2018 on Saturday 21 April 2018 at the Stamford Plaza, Glenelg in South Australia.
The successful development of industrial minerals projects requires an integrated, holistic understanding of the metallurgical and product performance test work in the context of the geological setting of the deposit and applied to mining, processing and marketing of saleable products. The product specifications provide the essential starting point for geometallurgical studies. A sound understanding of the desired product is needed to design and interpret a program of test work. Examples are provided from recent studies on bentonite and graphite deposits.
For bentonite projects, the naïve testing of only the cation exchange capacity (CEC) as a measure of purity can lead to unexpected outcomes when the deposit is mined. The CEC attribute may remain the same, while other important properties such pH and swelling index change markedly with depth, due to weathering and oxidation, leading to disappointing production outcomes.
For graphite projects it is not enough to report only total graphitic carbon content (TGC). Knowledge is required of the in situ flake size and textures in addition to purity and flake size distribution of extracted graphite, which may all vary from one domain to another across the deposit. Such geometallurgical attributes of the ore will impact on the ‘basket price’ used to estimate the value of marketable parcels of expected product.
Disclosure of such information must be considered part of fully informing the market. As with all new project developments, consideration of the JORC (2012 and VALMIN (2015) Codes requires disclosure of all material information. This includes the geometallurgical characterization, ie those aspects of mineralogy that impact on resource evaluation, ore reserve definition and project valuation.
ABOUT THE AUTHOR
Dr Andrew Scogings
Dr Scogings is a geologist with more than 25 years’ experience in industrial minerals exploration, product development and sales management. Andrew has published several papers on the requirements of the JORC Code 2012, with specific reference to Clause 49. He is a regular contributor to Industrial Minerals Magazine and has written articles about QA/QC, bulk density methods and petrography for industrial minerals exploration, in addition to co-authoring several papers that ranked global graphite exploration projects. He was recently senior author of two significant reviews: Natural Graphite Report – strategic outlook to 2020 and Drilling grade barite – Supply, Demand & Markets published in 2015 by Industrial Minerals Research (UK). Andrew is a Registered Professional Geoscientist (RP Geo. Industrial Minerals) with the Australian Institute of Geoscientists.
PUBLISHED BY AUSIMM