Grant Ballantyne is an early career researcher with three years’ experience at the Julius Kruttschnitt Mineral Research Centre (JKMRC). He obtained a Bachelor of Engineering (Chemical and Metallurgical Engineering) with Honours Class 1 and a GPA of 6.375 from the University of Queensland in 2007. His Doctor of Philosophy in the field of Mineral Processing Engineering was conferred by the University of Queensland in 2012. He obtained two competitive scholarships during his undergraduate degree and one as a postgraduate student. He was also awarded two presentation awards during his PhD as well as the prestigious Zinifex and Ian Morely prizes acknowledging the quality of his thesis.
During his short career, Grant has supervised 4 vacation student projects, 1 undergraduate thesis and 3 RHD students. He has also authored 6 confidential reports, 3 industry publications, 9 international conference papers (4 refereed) and 5 refereed journal articles (4 of which were first author and in ERA A* publications).
Grant is passionate about equipping the next generation of metallurgists through undergraduate lecturing, postgraduate supervision and professional development courses. He leads the comminution component of the Metallurgical Engineering program at the UQ. For three years he has been the lead researcher responsible for the annual, 2-week Comminution and Minerals Processing program as part of the Sandvik International Mining School. He has also been part of 3 industry Metskill training courses and 2 post-graduate courses at the Sustainable Minerals Institute.
Grant’s research has gained industry recognition, especially through an international non-for-profit group called the coalition for eco-efficient comminution (CEEC). He was recently invited to present a keynote address at the 2014 CEEC workshop in Vancouver, the result of which was that his benchmarking methodology will be adopted by all the members. The aim was set to benchmark over 50% of the global gold and copper producing mines using his methodology before expanding to other commodities.
Energy efficient comminution has become Grant’s major research theme, and as such he is focussed on the industry applications supported by fundamental theoretical understanding. He has been part of research teams investigating process improvements at Tanami (gold), Northparkes (copper/gold), Mineral San Cristobal (lead/zinc/silver), Cadia (copper/gold), Mogalakwena (platinum) and Telfer (copper/gold). In 2014 he has also led two research and training groups (8 researchers including RHD students) to conduct comminution circuit assessment at Sunrise Dam Gold Mine and Citic Pacific’s Iron Project. In one of these investigations a process improvement was identified that could result in an increase in revenue of approximately A$35 million per year.
Doctor of Philosophy, The University of Queensland
Bachelor of Engineering, The University of Queensland
Linking comminution objective function to recovery
Optimising the economic outcomes of grade engineering
Development of standard methodology for energy efficiency measurement in comminution processes
- Ballantyne, Grant R., Peukert, Wolfgang and Powell, Malcolm S. (2015) Size specific energy (SSE) - energy required to generate minus 75 micron material. International Journal of Mineral Processing, 136 2-6. doi:10.1016/j.minpro.2014.09.010
- Ballantyne, G. R. and Powell, M. S. (2014) Benchmarking comminution energy consumption for the processing of copper and gold ores. Minerals Engineering, 65 109-114. doi:10.1016/j.mineng.2014.05.017
- Golev, Artem, Scott, Margaretha, Erskine, Peter D., Ali, Saleem H. and Ballantyne, Grant R. (2014) Rare earths supply chains: current status, constraints and opportunities. Resources Policy, 41 1: 52-59. doi:10.1016/j.resourpol.2014.03.004
- Ballantyne, G. R. and Powell, M. S. (2014). Benchmarking comminution energy consumption for improved efficiency. In: 12th AusImm Mill Operators' Conference 2014: Proceedings. 12th AusIMM Mill Operators' Conference 2014, Townsville, Australia, (95-99). 1-3 September 2014.
- Ballantyne, G. R. and Holtham, P. N. (2014) Evaluation of the potential for using dielectrophoresis to separate minerals. Minerals Engineering, 55 75-79. doi:10.1016/j.mineng.2013.09.009
- Ballantyne, G. R., Powell, M. S. and Tiang, M. (2012). Proportion of energy attributable to comminution. In: Peter Hills (Conference Chair), Proceedings: 11th AusIMM Mill Operators' Conference 2012. 11th AusIMM Mill Operators' Conference 2012, Hobart, Tasmania, (25-30). 29-31 October 2012.
- Drinkwater, Diana, Napier-Munn, Timothy J. and Ballantyne, Grant (2012). Energy reduction through eco-efficient comminution strategies. In: Pradip (Conference President), XXVI International Mineral Processing Congress - IMPC 2012: Conference Proceedings. XXVI International Mineral Processing Congress - IMPC 2012, New Delhi, India, (1223-1229). 24-28 September 2012.
- Ballantyne, G. and Holtham, Peter N. (2010). Separation of minerals using electrical fields. In: XXV International Mineral Processing Congress - IMPC 2010 'Smarter processing for the future. International Mineral Processing Congress 2010, Brisbane, Qld, Australia, (575-579). 6-10 september, 2010.