Emeritus Professor Malcolm Powell
Emeritus Professor
JKMRC
Emeritus Professor Malcolm Powell has 35 years’ experience in the field of comminution, with a blend of academic and applied site research, consulting, design, software and model development.
Malcolm led the comminution research at the JKMRC for 12 years, and started and led the Comminution group and the MPTech consulting group at the University of Cape Town, for 10 years. He owns his own company (LDS) dedicated to mill liner design; is a partner in CTTI which provides advanced computational solutions to design mill liners, ore handling and design of novel equipment; and is the founder of Comminution Reimagined – established to develop step change, energy efficient comminution equipment.
Malcolm aims to link fundamental research into applied outputs through the development of mechanistically correct but practical and robust process models. He has built the foundation of insights into the mechanical processes within comminution and classification devices in the form of mechanistic models, underpinned by experimental particle tracking, computational modelling and applied measurements in laboratory and on site. This utilises techniques such as X-ray filming, positron emission particle tracking (PEPT), discrete element modelling (DEM) of particle motion and fracture, CFD, large batch pilot mill, Hopkinson bar impact measurement (e.g. SILC) of particle fracture, precision single particle tolls breakage device. Critically, this is founded on thousands of hours spent on mining sites, comminution circuits and inside mills – observing, measuring and testing the real processes and multitude of variances and influencing factors.
Malcolm’s research has evolved to intrinsically support the sustainable extraction of our natural minerals resources. He has recognised and driven in his research strategy the need to massively change the efficiency with which our industry extracts minerals in order to address the well-known issues of falling grade (driven by exploiting high-grade deposits first), processing more complex ores and massive pits while addressing the environmental and social issues of land, water and energy usage. His Integrated Process Knowledge vision directly addresses this at source. Papers have been published covering energy, water usage, tailings, training, proposed routes to industry transformation via steps change, FlexiCircuits and integrated processing.
Malcolm’s current research remains active through both Universities and his companies. Within the CTTI team, cutting edge application of DEM modelling is being developed to integrate SAG mill liner life with mill productivity – targeting a substantial increase in both. Malcolm’s Comminution Reimagined company is testing novel energy-efficient comminution processes. Within the JKMRC he is leading development of novel ore characterisation techniques to provide precise measures of minimum achievable comminution energy. Through the Global Comminution Collaborative (GCC) he is leading research on mechanistic, dynamic mill modelling, including the missing element of transport.
Book Chapter
Powell, M. S., Smit, I., Radsizewski, P., Cleary, P., Rattray, B., Eriksson, K. and Schaeffer, L. (2006). The selection and design of mill liners. Advances in comminution. (pp. 331-376) edited by S . Komar Kawatra. Littleton, CO, United States: Society for Mining, Metallurgy & Exploration.
Journal Articles
Campos, Túlio M., Andersson, Caroline, Evertsson, Magnus, Powell, Malcolm and Tavares, Luís Marcelo (2024). Energy-based modelling of single-particle breakage by slow compression. Minerals Engineering, 208 108585, 108585. doi: 10.1016/j.mineng.2024.108585
Ye, Z., Yahyaei, M., Hilden, M. and Powell, M.S. (2023). Novel size segregation indices for multi-sized particle stockpiles. Minerals Engineering, 201 108165, 108165. doi: 10.1016/j.mineng.2023.108165
Kwade, Arno, Möller, Marcel, Müller, Jannes, Hesselbach, Jutta, Zellmer, Sabrina, Doose, Stefan, Mayer, Julian, Michalowski, Peter, Powell, Malcolm and Breitung-Faes, Sandra (2023). Comminution and Classification as Important Process Steps for the Circular Production of Lithium Batteries. KONA Powder and Particle Journal, 2023 (40) 2023006, 50-73. doi: 10.14356/kona.2023006
Mazzinghy, Douglas B., Figueiredo, Ricardo A.M., Parbhakar-Fox, Anita, Yahyaei, Mohsen, Vaughan, James and Powell, Malcolm S. (2022). Trialling one-part geopolymer production including iron ore tailings as fillers. International Journal of Mining, Reclamation and Environment, 36 (5), 1-12. doi: 10.1080/17480930.2022.2047271
Yu, P., Xie, W., Liu, L. X., Hilden, M. and Powell, M. S. (2021). A consolidated summary on the evolution of a dynamic tumbling mill model. Powder Technology, 391, 173-183. doi: 10.1016/j.powtec.2021.06.017
Frausto, J.J., Ballantyne, G.R., Runge, K., Powell, M.S., Wightman, E.M., Evans, C.L., Gonzalez, P. and Gomez, S. (2021). The effect of screen versus cyclone classification on the mineral liberation properties of a polymetallic ore. Minerals Engineering, 169 106930, 1-9. doi: 10.1016/j.mineng.2021.106930
Bueno, Marcos, Torvela, Janne, Chandramohan, Rajiv, Chavez Matus, Tabatha, Liedes, Toni and Powell, Malcolm (2021). The double wheel breakage test. Minerals Engineering, 168 106905. doi: 10.1016/j.mineng.2021.106905
Rodrigues, Armando F.d.V., Delboni, Homero, Powell, Malcolm S. and Tavares, Luis Marcelo (2021). Comparing strategies for grinding itabirite iron ores in autogenous and semi-autogenous pilot-scale mills. Minerals Engineering, 163 106780. doi: 10.1016/j.mineng.2021.106780
Esteves, Priscila M., Mazzinghy, Douglas B., Hilden, Marko M., Yahyaei, Mohsen, Powell, Malcolm S. and Galery, Roberto (2021). An alternative strategy to compensate for screw wear in gravity induced stirred mills. Powder Technology, 379, 384-392. doi: 10.1016/j.powtec.2020.10.075
Hilden, Marko M., Powell, Malcolm S. and Yahyaei, Mohsen (2021). An improved method for grinding mill filling measurement and the estimation of load volume and mass. Minerals Engineering, 160 (1) 106638, 1-9. doi: 10.1016/j.mineng.2020.106638
Oliveira, A. L.R., Rodriguez, V. A., de Carvalho, R. M., Powell, M. S. and Tavares, L. M. (2020). Mechanistic modeling and simulation of a batch vertical stirred mill. Minerals Engineering, 156 106487, 106487. doi: 10.1016/j.mineng.2020.106487
Yu, P., Xie, W., Liu, L. X. and Powell, M. S. (2019). Applying Fréchet distance to evaluate the discrepancy of product size distribution between single particle and monolayer multi-particle breakage. Powder Technology, 344, 647-653. doi: 10.1016/j.powtec.2018.12.043
Yu, P., Xie, W., Liu, L. X., Hilden, M. M. and Powell, M. S. (2018). Evolution of a generic, dynamic and multicomponent tumbling mill model structure incorporating a wide-range 4D appearance function. Powder Technology, 339, 396-407. doi: 10.1016/j.powtec.2018.08.016
Hasan, Maruf, Palaniandy, Sam, Hilden, Marko and Powell, Malcolm (2017). Simulating product size distribution of an industrial scale VertiMill® using a time-based population balance model. Minerals Engineering, 127, 312-317. doi: 10.1016/j.mineng.2017.11.007
Ballantyne, Grant, Bonfils, Benjamin and Powell, Malcolm (2017). Evolution of impact breakage characterisation: re-defining t-family relationship. International Journal of Mineral Processing, 168, 126-135. doi: 10.1016/j.minpro.2017.10.001
Hilden, Marko M. and Powell, Malcolm S. (2017). A geometrical texture model for multi-mineral liberation prediction. Minerals Engineering, 111, 25-35. doi: 10.1016/j.mineng.2017.04.020
Hasan, Maruf, Palaniandy, Sam, Hilden, Marko and Powell, Malcolm (2017). Calculating breakage parameters of a batch vertical stirred mill. Minerals Engineering, 111, 229-237. doi: 10.1016/j.mineng.2017.06.024
Yu, P., Xie, W., Liu, L. X. and Powell, M. S. (2017). The development of the wide-range 4D appearance function for breakage characterisation in grinding mills. Minerals Engineering, 110, 1-11. doi: 10.1016/j.mineng.2017.04.004
Palaniandy, Samayamutthirian, Mohsen Yahyaei and Powell, Malcolm (2017). Assessment of hydrocyclone operation in gravity induced stirred mill circuit. Minerals Engineering, 108, 83-92. doi: 10.1016/j.mineng.2017.01.002
Yu, Ping, Xie, Weiguo, Liu, Lian X. and Powell, Malcolm S. (2017). Analytical solution for the dynamic model of tumbling mills. Powder Technology, 337, 111-118. doi: 10.1016/j.powtec.2017.04.035
Saeidi, Fatemeh, Yahyaei, Mohsen, Powell, Malcolm and Tavares, Luis Marcelo (2017). Investigating the effect of applied strain rate in a single breakage event. Minerals Engineering, 100, 211-222. doi: 10.1016/j.mineng.2016.09.010
Benzer, Hakan, Dündar, Hakan, Altun, Okay, Tavares, Luis Marcelo Marques, Powell, Malcolm, Mazzinghy, Douglas Batista and Russo, José Francisco Cabello (2017). HPGR simulation from piston-die tests with an itabirite ore. Revista Escola de Minas, 70 (1), 99-107. doi: 10.1590/0370-44672015700058
Saeidi, Fatemeh, Tavares, Luis Marcelo, Yahyaei, Mohsen and Powell, Malcolm (2016). A phenomenological model of single particle breakage as a multi-stage process. Minerals Engineering, 98, 90-100. doi: 10.1016/j.mineng.2016.07.006
Bracey, R. J., Weerasekara, N. S. and Powell, M. S. (2016). Performance evaluation of the novel multi-shaft mill using DEM modelling. Minerals Engineering, 98, 251-260. doi: 10.1016/j.mineng.2016.09.007
Hasan, Maruf, Palaniandy, Sam, Hilden, Marko and Powell, Malcolm (2016). Investigating internal classification within gravity induced stirred mills. Minerals Engineering, 95, 5-13. doi: 10.1016/j.mineng.2016.05.019
Bonfils, Benjamin, Ballantyne, Grant R. and Powell, Malcolm S. (2016). Developments in incremental rock breakage testing methodologies and modelling. International Journal of Mineral Processing, 152, 16-25. doi: 10.1016/j.minpro.2016.04.010
Yahyaei, M, Powell, M.S, Toor, Paul, Tuxford, Andrew and Limpus, Andrew (2015). Relining efficiency and liner design for improved plant performance. Minerals Engineering, 83, 64-77. doi: 10.1016/j.mineng.2015.08.016
Weerasekara, N. S., Liu, L. X. and Powell, M. S. (2015). Estimating energy in grinding using DEM modelling. Minerals Engineering, 85, 23-33. doi: 10.1016/j.mineng.2015.10.013
Parker, Tamsyn, Shi, Feng N., Evans, Catherine L. and Powell, Malcolm (2015). The effects of electrical comminution on the mineral liberation and surface chemistry of a porphyry copper ore. Minerals Engineering, 82 4620, 101-106. doi: 10.1016/j.mineng.2015.03.019
Yahyaei, M., Weerasekara, N. S. and Powell, M. S. (2015). Characterisation of superficial breakage using multi-size pilot mills. Minerals Engineering, 81, 71-78. doi: 10.1016/j.mineng.2015.07.011
Palaniandy, Samayamutthirian, Powell, Malcolm, Hilden, Marko, Allen, Jonathan, Kermanshahi, Kamran, Oats, Bill and Lollback, Mark (2015). VertiMill® - preparing the feed within floatable regime at lower specific energy. Minerals Engineering, 73, 44-52. doi: 10.1016/j.mineng.2014.11.014
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
Bourgeois, Florent S., Lippiatt, Nicholas R. and Powell, Malcolm S. (2015). Introducing the concept of mechanical texture in comminution: The case of concrete recycling. International Journal of Mineral Processing, 136, 7-14. doi: 10.1016/j.minpro.2014.09.012
Yildirim, Baris G., Bradshaw, Dee, Powell, Malcolm, Evans, Cathy and Clark, Alice (2014). Development of an effective and practical Process Alteration Index (PAI) for predicting metallurgical responses of Cu porphyries. Minerals Engineering, 69, 91-96. doi: 10.1016/j.mineng.2014.07.009
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
Weerasekara, N. S. and Powell, M. S. (2014). Performance characterisation of AG/SAG mill pulp lifters using CFD techniques. Minerals Engineering, 63, 118-124. doi: 10.1016/j.mineng.2014.02.001
Narasimha, M., Mainza, A., Holtham, Peter N., Powell, Malcolm and Brennan, Matthew S. (2014). A semi-mechanistic model of hydrocyclones - developed form industrial data and inputs from CFD.. International Journal of Mineral Processing, 133, 1-12. doi: 10.1016/j.minpro.2014.08.006
Weerasekara, N. S., Powell, M. S., Cleary, P. W., Tavares, L. M., Evertsson, M., Morrison, R. D., Quist, J. and Carvalho, R. M. (2013). The contribution of DEM to the science of comminution. Powder Technology, 248, 3-24. doi: 10.1016/j.powtec.2013.05.032
Li, Xilin, Powell, Malcolm and Horberry, Tim (2012). Human factors in control room operations in mineral processing: Elevating control from reactive to proactive. Journal of Cognitive Engineering and Decision Making, 6 (1), 88-111. doi: 10.1177/1555343411432340
Tuazon, D., Corder, G., Powell, M. and Ziemski, M. (2012). A practical and rigorous approach for the integration of sustainability principles into the decision-making processes at minerals processing operations. Minerals Engineering, 29, 65-71. doi: 10.1016/j.mineng.2011.10.017
Bueno, Marcos, Kojovic, Toni, Powell, Malcolm and Shi, Feng N. (2012). Multi-component AG/SAG mill model. Minerals Engineering, In Press, Corrected Proof, 12-21. doi: 10.1016/j.mineng.2012.06.011
Toor, Paul, Franke, Jochen, Powell, Malcolm, Bird, Matthew and Waters, Thomas (2012). Designing liners for performance not life. Minerals Engineering, 43-44, 22-28. doi: 10.1016/j.mineng.2012.07.004
Li, X., Mckee, D.J., Horberry, T. and Powell, M.S. (2011). The control room operator: The forgotten element in mineral process control. Minerals Engineering, 24 (8), 894-902. doi: 10.1016/j.mineng.2011.04.001
Bbosa, L. S., Govender, I., Mainza, A. N. and Powell, M. S. (2011). Power draw estimations in experimental tumbling mills using PEPT. Minerals Engineering, 24 (3-4), 319-324. doi: 10.1016/j.mineng.2010.10.005
Powell, Malcolm, Nirmal Weerasekara, Cole, S., LaRoche, R.D. and Favier, J. (2011). DEM modelling of linear evolution and its influence on grinding rate in ball mills. Minerals engineering, 24 (3-4), 341-351. doi: 10.1016/j.mineng.2010.12.012
Powell, Malcolm (2011). Foreword. Minerals Engineering, 24 (3-4), 179-180. doi: 10.1016/j.mineng.2011.02.007
Rezaeizadeh, M., Fooladi, M., Powell, M. S. and Mansouri, S. H. (2010). Experimental observations of lifter parameters and mill operation on power draw and liner impact loading. Minerals Engineering, 23 (15), 1182-1191. doi: 10.1016/j.mineng.2010.07.017
Rezaeizadeh, M., Fooladi, M., Powell, M. S., Mansouri, S. H. and Weerasekara, N. S. (2010). A new predictive model of lifter bar wear in mills. Minerals Engineering, 23 (15), 1174-1181. doi: 10.1016/j.mineng.2010.07.016
Khanal, Manoj and Powell, Malcolm (2010). Energy representation for the Unified Comminution Model. Particulate Science and Technology: an international journal, 28 (6), 529-538. doi: 10.1080/02726350903579348
Rezaeizadeh, M., Fooladi, M., Powell, M. S. and Weerasekara, N. S. (2010). An experimental investigation of the effects of operating parameters on the wear of lifters in tumbling mills. Minerals Engineering, 23 (7), 558-562. doi: 10.1016/j.mineng.2009.12.010
Powell, M. S. (2009). Foreword. Minerals Engineering, 22 (7-8), 575-575. doi: 10.1016/j.mineng.2009.04.006
Powell, M. S., van der Westhuizen, A. P. and Mainza, A. N. (2009). Applying grinding curves to mill operation and optimisation. Minerals Engineering, 22 (7-8), 625-632. doi: 10.1016/j.mineng.2009.01.008
Becker, M., Mainza, A. N., Powell, M. S., Bradshaw, D. J. and Knopjes, B. (2008). Quantifying the influence of classification with the 3 product cyclone on liberation and recovery of PGMs in UG2 ore. Minerals Engineering, 21 (7), 549-558. doi: 10.1016/j.mineng.2007.11.001
Powell, M. S. and Morrison, R. D. (2007). The future of comminution modelling. International Journal of Mineral Processing, 84 (1-4), 228-239. doi: 10.1016/j.minpro.2006.08.003
Powell, Malcolm and Mainza, Aubrey (2006). Extended grinding curves are essential to the comparison of milling performance. Minerals Engineering, 19 (15), 1487-1494. doi: 10.1016/j.mineng.2006.08.004
Mainza, A., Narasimha, M., Powell, M. S., Holtham, P. N. and Brennan, M. S. (2006). Study of flow behaviour in a three-product cyclone using computational fluid dynamics. Minerals Engineering, 19 (10), 1048-1058. doi: 10.1016/j.mineng.2006.03.014
Morrison, R. and Powell, M. (2006). Design for sampling - preliminary exploration. Journal of The South African Institute of Mining And Metallurgy, 106 (10), 697-706.
Powell, M S and McBride, A T (2006). What is required from DEM simulation to model breakage in mills?. Minerals engineering, 19 (10), 1013-1021. doi: 10.1016/j.mineng.2006.03.009
Dlamini, M. F., Powell, M. S. and Meyer, C. J. (2005). A CFD simulation of a single phase hydrocyclone flow field. Journal of the South African Institute of Mining and Metallurgy, 105 (10), 711-717.
Govender, I., McBride, A. T. and Powell, M. S. (2004). Improved experimental tracking techniques for validating discrete element method simulations of tumbling mills. Experimental Mechanics, 44 (6), 593-607. doi: 10.1177/0014485104048333
Powell, M. S. and McBride, A. T. (2004). A three-dimensional analysis of media motion and grinding regions in mills. Minerals engineering, 17 (11), 1099-1109. doi: 10.1016/j.mineng.2004.06.022
Mainza, A., Powell, M. S. and Knopjes, B. (2004). Differential classification of dense material in a three-product cyclone. Minerals engineering, 17 (5), 573-579. doi: 10.1016/j.mineng.2004.01.023
McBride, Andrew, Govender, Indresan, Powell, Malcolm and Cloete, Trevor (2004). Contributions to the experimental validation of the discrete element method applied to tumbling mills. Engineering Computations, 21 (2), 119-136. doi: 10.1108/02644400410519703
Govender, I., Powell, M. and Nurick, G. N. (2002). Automated imaging to track the 3D motion of particles. Experimental Mechanics, 42 (2), 153-160. doi: 10.1177/0014485102042002205
Powell, M. S., Morrell, S. and Latchireddi, S. (2001). Developments in the understanding of South African style SAG mills. Minerals Engineering, 14 (10), 1143-1153. doi: 10.1016/S0892-6875(01)00132-7
Conference Papers
Ali, S., Powell, M. S., Yahyaei, M., Weatherley, D. K. and Ballantyne, G. R. (2022). A standardised method for the precise quantification of practical minimum comminution energy. IMPC Asia-Pacific Conference 2022, Melbourne, VIC Australia, 22–24 August 2022. Carlton, VIC Australia: AusIMM.
Ye, Ziming, Yahyaei, Mohsen, Hilden, Marko and Powell, Malcolm (2019). A method to evaluate the impact of stockpile size segregation on the performance of SAG mills. SAG Conference 2019, Vancouver, Canada, 22–26 September 2019.
Powell, M. (2019). How our clients will drive the need to slash energy use in mining. 26th International Mining Congress and Exhibition of Turkey, Antalya, Turkey, 16-19 April 2019. Antalya, Turkey: Baski.
Powell, M. S., Bonfils, B., Ballantyne, G. R., Yahyaei, M. and Hilden, M. M. (2019). The new suite of breakage characterisation tests. 29th International Mineral Processing Congress, IMPC 2018, Moscow, Russia, 17- 21 September, 2018. Montreal, Canada: Canadian Institute of Mining, Metallurgy and Petroleum.
Ye, Ziming, Yahyaei, Mohsen, Hilden, Marko and Powell, Malcolm (2019). A dynamic model for materials storage to model size segregation. 13th International Conference on Bulk Materials Storage, Handling and Transportation, Surfers Paradise, QLD Australia, 9-11 July 2019. Barton, ACT Australia: Engineers Australia.
Yahyaei, Mohsen and Powell, Malcolm (2019). Production improvement opportunities in comminution circuits. 14th AusIMM Mill Operators' Conference 2018, Brisbane, Australia, 29-31 August 2019. Carlton VIC Australia: The Australasian Institute of Mining and Metallurgy.
Esteves, Priscila, Mazzinghy, Douglas, Hilden, Marko, Yahyaei, Mohsen, Powell, Malcolm and Galery, Roberto (2019). Qualitative evaluation of the grinding efficiency of a gravity induced stirred mill using the size specific energy approach. 16th European Symposium on Comminution and Classification (ESCC 2019), Leeds, United Kingdom, 2-4 September 2019.
Ye, Ziming, Yahyaei, Mohsen, Hilden, Marko and Powell, Malcolm (2019). Development of a laboratory test to quantify the size segregation in stockpiles. 16th European Symposium on Comminution & Classification (ESCC 2019), Leeds, United Kingdom, 2-4 September 2019.
Powell, Malcolm, Bozbay, S., Kanchibotla, S., Bonfils, B., Musunuri, A., Jokovic, V., Hilden, M., Young, J. and Yalcin, E. (2019). Advanced mine-to-mill used to unlock SABC capacity at the Barrick Cortez mine. International Conference on Autogenous Grinding, Semi-autogenous Grinding and High Pressure Grinding Roll Technology, Vancouver, BC, Canada, 22-26 September 2019.
McElroy, Adam, Powell, Malcolm, Tillberg, Jan, Hilden, Marko, Yahyaei, Mohsen, Linna, Matti and Johansson, Anna (2019). An assessment of the energy efficiency and operability of the world's largest autogenous grinding mills at Boliden's Aitik mine. SAG CONFERENCE 2019, Vancouver, BC, Canada, 22 - 26 September 2019.
Bonfils, B. and Powell, M. S. (2019). Initial applyication of a dynamic, mechanistic mill model. 29th International Mineral Processing Congress, IMPC 2018, Moscow, Russia, 15-21 September 2018. Montreal, Canada: Canadian Institute of Mining, Metallurgy and Petroleum.
Powell, Malcolm, Kanchibotla, Sarma, Jokovic, Vladimir, Hilden, Marko, Bonfils, Benjamin, Musunuri, Anand, Moyo, Pamela, Yu, Samuel, Young, Jace, Yaroshak, Paul, Yalcin, Emrah and Gorain, Barun (2018). Advanced mine to mill application at the Barrick Cortez mine. The 14th AusIMM Mill Operator’s Conference, Brisbane, QLD Australia, 29-31 August 2018. Brisbane, QLD Australia: AusIMM.
Frausto, J. J., Ballantyne, G. R., Runge, K., Powell, M. S. and Cruz, R. (2017). The Impact of Classification Efficiency on Comminution and Flotation Circuit Performance. AusIMM Metallurgical Plant Design and Operating Strategies (MetPlant) Conference, Perth, Australia, 11-12 September 2017. Carlton South, VIC Australia: AusIMM.
Weatherley, D. K. and Powell, M. S. (2017). Bivariate population balance equations for progressive weakening and fragmentation of base metal ores in tumbling mills. 9th Australasian Congress on Applied Mechanics, ACAM 2017, Sydney, NSW Australia, 27-29 November 2017 . Barton, ACT, Australia: Engineers Australia.
Ballantyne, G. R. and Powell, M. S. (2016). Using the comminution energy curves to assess equipment performance. Comminution '16: 10th International Comminution Symposium, Capetown, South Africa, 11-14 April 2016. Capetown, South Africa: International Comminution Symposium.
Ballantyne, Grant, Powell, M. S. and Radziszewski, P. (2016). Extension of the comminution energy curves and application to stirred milling performance. Canadian Mineral Processing (CMP) Conference, Ottawa, Ontario, Canada, 19-21 January 2016. Ottawa, Ontario, Canada: Canadian Mineral Processing (CMP) Conference.
Ballantyne, Grant R., Powell, M. S., Clarke, N., Di Trento, M., Kock, F. and Putland, B. (2016). Energy curve case study (AngloGold Ashanti). 2016 SME Annual Meeting & Exhibit (SME 2016), Phoenix, Arizona, 2016.
Yu, Ping, Xie, Weiguo, Liu, Lian X., Weerasekara, Nirmal, Bonfils, Benjamin and Powell, Malcolm (2016). A generic dynamic model incorporating a 4D appearance function for tumbling mills. 28th International Mineral Processing Congress, IMPC 2016, Quebec City, Canada, 11-15 September 2016. Westmount, Canada: Canadian Institute of Mining, Metallurgy and Petroleum.
Saeidi, Fatemeh, Yahyaei, Mohsen, Powell, Malcolm and Marcelo Tavares, Luis (2016). Understanding single particle breakage event to evaluate the effect of applied strain rate. XXVIII International Mineral Processing Congress Proceedings, Quebec City, Quebec, Canada, 11-15 September 2016. Canadian Institute Mining, Metallurgy and Petroleum.
Yahyaei, Mohsen, Limpus, Andrew, Russell, John, Toor, Paul and Powell, Malcolm (2015). Improving liner design for efficiency. The 6th International Conference on Semi-Autogenous and High Pressure Grinding Technology, Vancouver, BC, Canada, 20-24 September 2015. Vancouver, BC, Canada: Canadian Institute of Mining and Metallurgy (CIM).
Yahyaei, M., Weerasekara, N. and Powell, M. (2015). A study of the effect of particle size on surface breakage in a pilot mill. 14th European Symposium on Comminution and Classification, Gothenburg, Sweden, 7-10 September 2015. Gothenberg, Sweden: Chalmers University of Technology.
Saeidi, Fatemeh, Marcelo Tavares, Luis, Yahyaei, Mohsen and Powell, Malcolm (2015). Modelling single particle breakage as a multi-stage process. 14th European Symposium on Comminution and Classification, Gothenburg, Sweden, 7-10 September 2015. Gothenberg, Sweden: Chalmers University of Technology.
Engelhardt, Dieter, Seppelt, Joe, Waters, Tom, Apfelt, Andy, Lane, Greg, Yahyaei, Mohsen and Powell, Malcolm (2015). The Cadia Hpgr-Sag Circuit – from design to operation – the commissioning challenge. The 6th International Conference on Semi-Autogenous and High Pressure Grinding Technology, Vancouver, BC, Canada, 20-24 September 2015. Vancouver, BC, Canada: Canadian Institute of Mining and Metallurgy (CIM).
Ballantyne, G. R. and Powell, M. S. (2015). Development of the comminution 'energy curve'. 6th International Conference on Semi-Autogenous and High Pressure Grinding Technology, Vancouver, Canada, 20 - 24 September, 2015. Vancouver, Canada: SAG Conference.
Ballantyne, G. R., Mainza, A. and Powell, M. S. (2015). Using comminution energy intensity curves to assess efficiency of gold processing circuits. World Gold 2015, Johannesburg, South Africa, 29 September - 1 October, 2015. Johannesburg South Africa: Southern African Institute of Mining and Metallurgy.
Masuret, C., Yahyaei, M., Weerasekara, N. and Powell, M. (2015). Measuring shear abrasion breakage of rocks using a novel characterisation experiment. 14th European Symposium on Comminution and Classification, Gothenburg, Sweden, 7-10 September 2015. Gothenberg, Sweden: Chalmers University of Technology.
Toor, Paul, Powell, Malcolm, Hilden, Marko and Weerasekara, Nirmal (2015). Understanding the effects of liner wear on SAG mill performance. MetPlant 2015, Perth, Australia, 7-8 September 2015. The Australasian Institute of Mining and Metallurgy.
Bonfils, Benjamin, Powell, Malcolm and Tello, Sebastian (2015). Simulations of expansion scenarios of a standard SABC circuit. International Conference on Semi-Autogenous and High Pressure Grinding Technology, Vancouver, Canada, 20-24 September 2015.
Powell, Malcolm S., Mainza, Aubrey N., Hilden, Marko H. and Yahyaei, Mohsen (2015). Full pre-crush to sag mills – the case for changing this practice. The 6th International Conference on Semi-Autogenous and High Pressure Grinding Technology, Vancouver, BC, Canada, 20-24 September 2015. Vancouver, BC, Canada: Canadian Institute of Mining and Metallurgy (CIM).
Reja, Y., Ballantyne, G. R., Bonfils, B. and Powell, M. S. (2015). Double Impact Breakage: Comparison and Extension of Size Specific Energy Methodology. European Symposium of Comminution and Classification (ESCC), Gothenburg, Sweden, 2015.
Ballantyne, Grant, Powell, M. S., Bonfils, B. and Yahyaei, M. (2015). Simple energy measures for assessing total circuit efficiency. 6th International Conference on Semi-Autogenous and High Pressure Grinding Technology, Vancouver, Canada, 20 - 24 September 2015.
G. R. Ballantyne, N. Clarke, P. Elms, A. Anyimadu and M. S. Powell (2015). Application of research principles to identify process improvement at Sunrise Dam Gold Mine. MetPlant 2015: Plant Design & Operating Strategies - World's Best Practice, Perth, Australia, 7-8 September, 2015. Melbourne, Australia: The Australasian Institute of Mining and Metallurgy.
Ballantyne, Grant R., Foggiatto, B., Carrasco, C., Hilden, M. and Powell, M. S. (2015). Improving SAG mill performance and controllability by leveraging the modified size distributions from Grade Engineering®. 6th International Conference on Semi-Autogenous and High Pressure Grinding Technology, Vancouver, BC, Canada, 20-24 September 2015. Vancouver, BC, Canada: Canadian Institute of Mining and Metallurgy (CIM).
Shi, Feng N., Weiguo Xie and Powell, Malcolm (2014). Modelling particle size reduction in a batch grinding ball mill. Comminution '14: 9th International Comminution Symposium, Cape Town, South Africa, 7-10 April, 2014.
Ballantyne, G. R. and Powell, M. S. (2014). Benchmarking comminution energy consumption for improved efficiency. 12th AusIMM Mill Operators' Conference 2014, Townsville, Australia, 1-3 September 2014. Carlton, VIC, Australia: AusIMM: Australasian Institute of Mining and Metallurgy.
Yu, Ping, Xie, Weiguo, Liu, Lian and Powell, Malcolm (2014). Development of a dynamic mill model structure for tumbling mills. XXVII International Mineral Processing Congress - IMPC 2014, Santiago, Chile, 20-24 October 2014. Santiago, Chile: Gecamin Digital Publications.
Powell, Malcolm, Hilden, Marko, Ballantyne, Grant, Liu, Lian and Tavares, Luis Marcelo (2014). The appropriate and inappropriate application of the JKMRC t10 relationship. XXVII International Mineral Processing Congress - IMPC 2014, Santiago, Chile, 20-24 October 2014. Santiago, Chile: Gecamin Digital Publications.
Palaniandy, S., Powell, M., Hilden, M., Allen, J., Kermanshahi, K., Oats, B. and Lollback, M. (2014). VertiMill®: preparing the feed within floatable regime at lower specific energy. Comminution '14: 9th International Comminution Symposium, Cape Town, South Africa, 7-10 April, 2014.
Ballantyne, G. R., Shi, F., Bonfils, B. and Powell, M. S. (2014). Comparison of single particle, Bond and bed tests for fine particle ore breakage characterisation. Comminution '14: 9th International Comminution Symposium, Cape Town, South Africa, 7-10 April, 2014.
Liu, L. X., Palaniandy, S. and Powell, M. S. (2014). Technical gaps and challenges for fine grinding. Comminution '14: 9th International Comminution Symposium, Cape Town, South Africa, 7-10 April, 2014.
Foggiatto, B., Hilden, M. M. and Powell, M. (2014). Advances in the simulation of flexible circuits. 12th AusIMM Mill Operators' Conference 2014, Townsville, Australia, 1-3 September 2014. Carlton, VIC, Australia: AusIMM: Australasian Institute of Mining and Metallurgy.
Palaniandy, S., Powell, M. S., Hilden, M. M., Allen, J., Kermanshahi, K., Oats, B. and Lollback, M. (2014). Vertimill® performance updates in secondary and regrind duties at Cannington Mine, BHP Billiton.. 12th AusIMM Mill Operators' Conference 2014, Townsville, Australia, 1-3 September 2014. Carlton, VIC, Australia: AusIMM: Australasian Institute of Mining and Metallurgy.
Saeidi, Fatemeh, Yahyaei, Mohsen and Powell, Malcolm (2014). New insights into comparison of breakage testing techniques. XXVII International Mineral Processing Congress - IMPC 2014, Santiago, Chile, 20-24 October 2014. Santiago, Chile: Gecamin Digital Publications.
Francioli, Daniel, Yahyaei, Mohsen, Taveres, Luis Marcelo and Powell, Malcolm (2014). Characterizing attrition of rock under incremental low- energy impacts. XXVII International Mineral Processing Congress - IMPC 2014, Santiago, Chile, 20-24 October 2014. Santiago, Chile: Gecamin Digital Publications.
Yahyaei, Mohsen, Weerasekara, Nirmal and Powell, Malcolm (2014). Impact of mill size on low-energy surface damage. XXVII International Mineral Processing Congress - IMPC 2014, Santiago, Chile, 20-24 October 2014. Santiago, Chile: Gecamin Digital Publications.
Powell, Malcolm, Foggiatto, Bianca and Hilden, Marko (2014). Practical simulation of FlexiCircuit processing options. XXVII International Mineral Processing Congress - IMPC 2014, Santiago, Chile, 20-24 October 2014. Santiago, Chile: Gecamin Digital Publications.
Morrison, R. D., Powell, M., Cleary, P. W., Delaney, G. W., Cummins, S. and Loveday, B. (2014). Predicting the evolution of rock size distribution, throughput and product size in AG and SAG mills by incremental damage, chipping, rounding and abrasion. Comminution '14: 9th International Comminution Symposium, Cape Town, South Africa, 7-10 April, 2014.
Liu, L. X., Saeidi, F. and Powell, M. S. (2014). Breakage characterization of multicomponent ore. Comminution '14: 9th International Comminution Symposium, Cape Town, South Africa, 7-10 April, 2014.
Engelhardt, D., Lane, G. and Powell, M. (2014). Cadia expansion - the impact of installing high pressure grinding rolls prior to a semi-autogenous grinding mill. 12th AusIMM Mill Operators' Conference 2014, Townsville, Australia, 1-3 September 2014. Carlton, VIC, Australia: AusIMM: Australasian Institute of Mining and Metallurgy.
Yahyaei, M., Vos, F., Powell, M., Siliezar, J. and Perkins, T. (2014). Challenges in developing integrated process models based on industrial survey data. 12th AusIMM Mill Operators' Conference 2014, Townsville, Australia, 1-3 September 2014. Carlton, VIC, Australia: AusIMM: Australasian Institute of Mining and Metallurgy.
Weerasekara, Nirmal, Yahyaei, Mohsen and Powell, Malcolm (2014). Interpreting low energy attrition behaviour in a pilot mill using numerical modelling. XXVII International Mineral Processing Congress - IMPC 2014, Santiago Chile, 20-24 October 2014. Santiago, Chile: Gecamin Digital Publications.
Hilden, M., Stange, W., Powell, M. S. and Andrusiewicz, M. (2013). The future developments in circuit simulation capability at the JKMRC. ESCC2013: 13th European Symposium on Comminution and Classification, Braunschweig, Germany, 9-12 September, 2013. Göttingen, Germany: Sierke Verlag.
Weerasekara, N. S. and Powell, M. S. (2013). Performance characterisation of AG/SAG mill pulp lifters using CFD techniques. Computational Modelling '13, Falmouth, Cornwall, U.K., 18-19 June, 2013. Falmouth, Cornwall, U.K.: Minerals Engineering International.
Mainza, A., Evertsson, M., Benzer, H., Tavarese, M., Powell, M. S., Rule, C., Plint, N., Lombard, M. and Knopjes, B. (2013). The role of classification in an evolving comminution circuit. ESCC2013: 13th European Symposium on Comminution and Classification, Braunschweig, Germany, 9-12 September, 2013. Göttingen, Germany: Sierke Verlag.
Powell, Malcolm (2013). Facing the challenges of new low-grade orebodies with new economic circuit designs. II International Meeting on Metallurgy Peru 2013: Plants and Processes, Lima, Peru, 1-3 November, 2013.
Bonfils, B. and Powell, M. S. (2013). Developments in incremental rock breakage testing methodologies and modelling. ESCC2013: 13th European Symposium on Comminution and Classification, Braunschweig, Germany, 9-12 September, 2013. Göttingen, Germany: Sierke Verlag.
Ballantyne, G. R., Yang, A. L., Powell, M. S. and Peukert, W. (2013). Size specific energy (SSE): energy required to generate minus 75 micron material. ESCC2013: 13th European Symposium on Comminution and Classification, Braunschweig, Germany, 9-12 September, 2013. Göttingen, Germany: Sierke Verlag.
Yahyaei, Mohsen, Weerasekara, Nirmal and Powell, Malcolm (2013). Characterisation of abrasion breakage using multi size pilot mills. 13th European Symposium on Comminution and Classification, Braunschweig, Germany, 9-12 September 2013. Gottingen, Germany: Sierke Verlag.
Powell, M. S. (2013). Pushing the boundaries of comminution with mechanistic modelling and multi-component process simulation. ESCC2013: 13th European Symposium on Comminution and Classification, Braunschweig, Germany, 9-12 September, 2013. Göttingen, Germany: Sierke Verlag.
Powell, M. S. (2013). Utilising orebody knowledge to improve comminution circuit design and energy utilisation. GeoMet 2013: The Second AusIMM International Geometallurgy Conference, Brisbane, QLD, Australia, 30 September-2 October, 2013. Carlton, VIC, Australia: The Australasian Institute of Mining and Metallurgy (AusIMM).
Palaniandy, S., Powell, M., Hilden, M., Kermanshahi, K., Allen, J. and Mwansa, S. (2013). VertiMill® - development of circuit survey and performance evaluation protocols. Metallurgical Plant Design and Operating Strategies (MetPlant 2013), Perth, WA, Australia, 15-17 July 2013. Carlton, VIC, Australia: Australasian Institute of Mining and Metallurgy (AusIMM).
Ballantyne, Grant, Hilden, Marko and Powell, Malcolm (2012). Early rejection of gangue - How much energy will it cost to save energy?. Comminution '12: 8th International Comminution Symposium, Cape Town, South Africa, 17-20 April 2012.
Yildirim, Baris, Bradshaw, D., Powell, M. S. and Clark, A. (2012). Development of an effective and practical alteration index for predicting metallurgical responses of Cu porphyries. Process Mineralogy '12, Cape Town, South Africa, 7-9 November 2012. Minerals Engineering International.
Ballantyne, G. R., Powell, M. S. and Tiang, M. (2012). Proportion of energy attributable to comminution. 11th AusIMM Mill Operators' Conference 2012, Hobart, Tasmania, 29-31 October 2012. Carlton, Australia: AusIMM: Australasian Institute of Mining and Metallurgy.
Li, X., Powell, M. S. and McKeague, W. (2012). Unlocking processing potential by empowering our operators. 11th AusIMM Mill Operators' Conference 2012, Hobart, Tasmania, 29-31 October 2012. Carlton, Victoria: AusIMM: Australasian Institute of Mining and Metallurgy.
Powell, M. S., Hilden, M. M., Evertsson, C. M., Asbjornsson, G., Benzer, A. H., Mainza, A. N., Tavares, L. M., Davis, B., Plint, N. and Rule, C. (2012). Optimisation opputunities for high pressure grinding rolls circuits. 11th AusIMM Mill Operators' Conference 2012, Hobart,Tasmania, 29-31 October 2012. Carlton, Victoria: AusIMM: Australasian Institute of Mining and Metallurgy.
Bueno, M. P. and Powell, M. S. (2012). How to use hard ore components as grinding media. 11th AusIMM Mill Operators' Conference 2012, Hobart,Tasmania, 29-31 October 2012. Carlton, Victoria: AusIMM: Australasian Institute of Mining and Metallurgy.
Toor, P., Franke, J., Powell, Malcolm, Bird, M. and Waters, T. (2012). Designing liners for performance not life. Comminution '12: 8th International Comminution Symposium, Cape Town, South Africa, 17-20 April 2012.
Tuazon, D., Corder, G. D., Powell, M. and Ziemski, M. (2012). A practical and rigorous approach for integrating sustainability principles into decision-making processes at minerals processing operations. Life of Mine Conference (AusIMM), Brisbane, QLD, Australia, 10 - 12 July 2012. Carlton North, VIC, Australia: The Australasian Institute of Mining and Metallurgy (AusIMM).
Foggiatto, B., Hilden, M. M., Powell, M. S., Kay, P. D. and Andrusiewicz, M. (2012). Simulation of flexible circuits. 11th AusIMM Mill Operators' Conference 2012, Hobart, Tasmania, 29-31 October 2012. Carlton, Victoria: AusIMM: Australasian Institute of Mining and Metallurgy.
Powell, M. S., Hilden, M. M., Weerasekara, N., Yahyaei, M., Toor, P., Franke, J. and Bird, M. (2012). A more holistic view of mill liner management. 11th AusIMM Mill Operators' Conference 2012, Hobart, Tasmania, 29-31 October 2012. Carlton, Victoria: AusIMM: Australasian Institute of Mining and Metallurgy.
Kojovic, T., Hilden, M. M., Powell, M. S. and Bailey, C. (2012). Updated Julius Kruttschnitt semi-autogenous grinding mill model. 11th AusIMM Mill Operators' Conference 2012, Hobart, Victoria, 29-31 October 2012. Carlton, Victoria: AusIMM: Australasian Institute of Mining and Metallurgy.
Bbosa, L., Govender, I., Mainza, A., Powell, M. and Plint, N. (2012). Comparing power draw predictions in experimental scale tumbling mills using PEPT and DEM. XXVI International Mineral Processing Congress - IMPC 2012, New Delhi, India, 24-28 September 2012. New Delhi, India: Technowrites.
Powell, M. S. and Mainza, A. N. (2012). Step change - a staircase rather than a giant leap. XXVI International Mineral Processing Congress - IMPC 2012, New Delhi, India, 24-28 September 2012. New Delhi, India: International Mineral Processing Congress.
Powell, Malcolm, Perkins, Tom and Mainza, Aubrey (2011). Grindcurves applied to a range of SAG and AG mills. International Autogenous Grinding, Semiautogenous Grinding and High Pressure Grinding Rolls Technology 2011, Vancouver BC, Canada, 25-28 September, 2011. Canada: Canadian Institute of Mining and Metallurgy.
van Drunick, W. I., Wilhelm, H., Smit, I. and Powell, Malcolm (2011). The Navachab optimisation history: Exceeding SAG performance benchmarks.. International Autogenous Grinding, Semiautogenous Grinding and High Pressure Grinding Rolls Technology 2011, Vancouver BC, Canada, 25-28 September, 2011. Canada: Canadian Institute of Mining and Metallurgy.
Tuazon, D., Corder, G., Powell, M. and Ziemski, M. (2011). A practical and rigorous approach for the integration of sustainability principles into the decision-making processes at minerals processing operations. Sustainability through Resource Conservation and Recycling 2011, Falmouth, Cornwall, United Kingdom, 10-12 May 2011.
Toor, Paul, Franke, Jochen, Powell, Malcolm, Perkins, Thomas, Bird, Matt and Robertson, Jason (2011). Quantifying the influence of liner shape and mill filling for performance optimization. Fifth International Conference on Autogenous & Semiautogeneous Grinding Technology, Vancouver, Canada, 25-28 September 2011. Canada: Canadian Institute of Mining and Metallurgy.
Weerasekara, Nirmal, Powell, Malcolm, Franke, J. and Favier, J. (2011). Integrating liner profile evolution and mill performance with 3D DEM modelling. International Autogenous Grinding, Semiautogenous Grinding and High Pressure Grinding Rolls Technology 2011, Vancouver, BC, Canada, 25-28 September, 2011. Canada: Canadian Institute of Mining and Metallurgy.
Tuazon, D., Corder, G., Powell, M. and Ziemski, M. (2011). A practical and rigorous approach for the integration of sustainability principles into the decision-making processes at minerals processing operations. Fifth International Conference for Sustainable Development in the Minerals Industry 2011, Aachen, Germany, 14-17 June 2011.
Kojovic, Toni, Powell, Malcolm, Bailey, Chris and Drinkwater, Diana (2011). Upgrading the JK SAG mill model. International Autogenous Grinding, Semiautogenous Grinding and High Pressure Grinding Rolls Technology 2011, Vancouver BC, Canada, 25-28 September, 2011. Canada: Canadian Institute of Mining and Metallurgy.
Bueno, Marcos, Niva, Erik, Henriksson, Marcus, Philips, Doug, Powell, Malcolm, Kojovic, Toni, Shi, Feng N., Durant, Braam and Plint, Neville (2011). Multi-component autogenous pilot trials. International Autogenous Grinding, Semiautogenous Grinding and High Pressure Grinding Rolls Technology 2011, Vancouver BC, Canada, 25-28 September, 2011. Canada: Canadian Institute of Mining and Metallurgy.
Engelhardt, Dieter, Robertson, Jason, Lane, Greg, Powell, Malcolm and Griffin, Paul (2011). Cadia expansion - from Open Pit to Block Cave and beyond. International Autogenous Grinding, Semiautogenous Grinding and High Pressure Grinding Rolls Technology 2011, Vancouver BC, Canada, 25-28 September, 2011. Canada: Canadian Institute of Mining and Metallurgy.
Dundar, H., Benzer, H., Aydogan, N. A., Powell, Malcolm and Mainza, A. N. (2011). Importance of the feed size distribution and recycle on the HPGR performance. International Autogenous Grinding, Semiautogenous Grinding and High Pressure Grinding Rolls Technology 2011, Vancouver BC, Canada, 25-28 September, 2011. Canada: Canadian Institute of Mining and Metallurgy.
Powell, Malcolm, Benzer, Hakan and Mainza, Aubrey (2011). The strengths of SAG and HPGR in flexible circuit designs. International Autogenous Grinding, Semiautogenous Grinding and High Pressure Grinding Rolls Technology 2011, Vancouver BC, Canada, 25-28 September, 2011. Canada: Canadian Institute of Mining and Metallurgy.
Powell, Malcolm, Benzer, Hakan, Mainza, Aubrey, Evertsson, Magnus, Tavares, Marcelo, van Drunick, Wayne, Potgieter, Mani, Davis, Barry, Plint, Neville and Rule, Chris (2011). Transforming the effectiveness of the HPGR circuit at Anglo Platinum Mogalakwena. International Autogenous Grinding, Semiautogenous Grinding and High Pressure Grinding Rolls Technology 2011, Vancouver BC, Canada, 25-28 September, 2011. Canada: Canadian Institute of Mining and Metallurgy.
Bird, Matt, Powell, Malcolm, Robertson, Jason, Hilden, Marko and Franke, Jochen (2011). Adapting mill control to account for liner wear on the Cadia 40ft mill.. International Autogenous Grinding, Semiautogenous Grinding and High Pressure Grinding Rolls Technology 2011, Vancouver BC, Canada, 25-28 September, 2011. Canada: Canadian Institute of Mining and Metallurgy.
Bueno, Marcos, Powell, Malcolm, Kojovic, Toni, Worth, Jonathan, Shi, Feng N., Niva, E., Adolfsson, G., Henriksson, M., Partapuoli, A., Wikstrom, P., Tano, K. and Fredriksson, A. (2011). The dominance of the competent. International Autogenous Grinding, Semiautogenous Grinding and High Pressure Grinding Rolls Technology 2011, Vancouver BC, Canada, 25-28 September, 2011. Canada: Canadian Institute of Mining and Metallurgy.
Chandramohan, R., Powell, Malcolm, Holtham, Peter N., Lane, G. and Daniel, M. J. (2011). The effect of blends of rock shape in AG/SAG mills and comminution circuits. International Autogenous Grinding, Semiautogenous Grinding and High Pressure Grinding Rolls Technology 2011, Vancouver, B.C. Canada, 25-28 September 2011. Canada: Canadian Institute of Mining and Metallurgy.
Toor, P., Perkins, T., Powell, M. S. and Franke, J. (2011). The influence of liner wear on milling efficiency. MetPlant 2011, Perth, Australia, 8-9 August 2011. Doncaster East, VIC, Australia: The Australasian Institute of Mining and Metallurgy.
Li, Xilin, Horberry, Tim and Powell, Malcolm (2010). Human control in mineral processing plants: An operator centered investigation. Human Factors and Ergnonomics Society 54th ANNUAL MEETING - 2010, San Francisco, CA, U.S.A, 27 September - 1 October 2010. San Francisco, U.S.A.: Human Factors and Ergonomics Society. doi: 10.1518/107118110X12829369201151
Powell, Malcolm and Weerasekara, Nirmal (2010). Building the unified comminution model. International Mineral Processing Congress 2010, Brisbane, Qld, Australia, 6-10 September, 2010. Carlton, VIC, Australia: Australasian Institute of Mining and Metallurgy.
Weerasekara, Nirmal and Powell, Malcolm (2010). Exploring the breakage environment in mills with discrete element methods. International Mineral Processing Congress 2010, Brisbane, Qld, Australia, 6-10 September, 2010. Carlton, VIC, Australia: Australasian Institute of Mining and Metallurgy.
Buffler, A., Govender, I., Cilliers, J. J., Parker, D. J., Franzidis, J.-P., Mainza, A., Newman, R.T., Powell, M. and Van Der Westhuizen, A. (2010). PEPT Cape Town: A new positron emission particle tracking facility at iThemba LABS. IAEA International Topical Meeting on Nuclear Research Applications and Utilization of Accelerators, Vienna, 4-8 May 2009. Vienna: International Atomic Energy Agency (IAEA.
Govender, I., Morrison, A. J., Mainza, A., van der Westuizen, A., Franzidis, J.-P. and Powell, Malcolm (2010). Using positron emission particle tracking (PEPT) to investigate industrial systems. International Mineral Processing Congress 2010, Brisbane, QLD, Australia, 6-10 September 2010. Carlton, VIC, Australia: Australasian Institute of Mining and Metallurgy.
Weerasekara, N. S., Powell, M. S., Cole, S. and Favier, J. (2010). Modeling breakage environment in tumbling mills using DEM and analyzing the outputs. DEM5: The Fifth International Conference on Discrete Element Methods, University of London, 25-26 August, 2010. University of London, London, United Kingdom: Queen Mary.
Bueno, Marcos, Shi, Feng N., Kojovic, Toni and Powell, Malcolm (2010). Investigation on multicomponent semi-autogenous grinding. International Mineral Processing Congress 2010, Brisbane, Qld, Australia, 6-10 September, 2010. Carlton, VIC, Australia: Australasian Institute of Mining and Metallurgy.
Chandramohan, Rajiv, Holtham, Peter N. and Powell, Malcolm (2010). The influence of particle shape in rock fracture. International Mineral Processing Congress 2010, Brisbane, Qld, Australia, 6-10 September, 2010. Carlton, VIC, Australia: Australasian Institute of Mining and Metallurgy.
de Kretser, R. G., Powell, M., Scales, P. J. and Lim, J. (2009). The water efficient plant of the future: Towards a holistic process chain approach.. WIM 2009, Perth, WA, 15-17 September, 2009. Carlton, VIC: AusIMM.
Powell, M. and Bye, A. (2009). Beyond mine-to-mill: Circuit design for energy efficient resource utilisation.. Tenth Mill Operators' Conference, Adelaide, SA, 12-14 October, 2009. Carlton, VIC: AusIMM.
Condori, P., Mainza, A., Govender, I. and Powell, M. S. (2008). A Mechanistic Approach to Modelling Slurry Transport in AG/SAG Mills: Transport through the Charge. XXIV International Mineral Processing Congress (XXIV IMPC), Beijing, China, 24-28 September 2008. Beijing, China: Science Press.
Powell, M., Weerasekara, N., Govender, I. and Khanal, M. (2008). Applying DEM outputs to the unified comminution model. Centre for Sustainable Resource Processing 2nd Annual Conference (CSRP'08), Brisbane, Australia, 18-19 November 2008. Kensington, WA, Australia: Centre for Sustainable Resource Processing.
Mainza, A. N. and Powell, M. S. (2008). Study of the efficiency of mineral department in the three product cyclone. XXIV International Mineral Processing Congress (XXIV IMPC), Beijing, China, 24-28 September, 2008. Beijing China: Science Press.
Powell, M., Govender, I. and McBride, A. T. (2008). Challenges in applying the unified comminution model. XXIV International Mineral Processing Congress (XXIV IMPC), Beijing, China, 24-28 September, 2008. Beijing, China: Science Press.
Weerasekara, N. and Powell, M. (2008). The new energy logging from the discrete element method. Centre for Sustainable Resource Processing 2nd Annual Conference (CSRP'08), Brisbane, Australia, 18-19 November 2008. Kensington, WA, Australia: Centre for Sustainable Resource Processing.
Hilden, M. and Powell, M. (2008). Multiple-pass high pressure grinding rolls circuits. Centre for Sustainable Resource Processing 2nd Annual Conference (CSRP'08), Brisbane, Australia, 18-19 November 2008. Kensington, WA, Australia: Centre for Sustainable Resource Processing.
Bbosa, L. S., Mainza, A. N. and Powell, M. S. (2008). Analysis of the breakage data of a series of devices. XXIV International Mineral Processing Congress (XXIV IMPC), Beijing, China, 24-28 September, 2008. Beijing China: Science Press.
Cleary, P. W., Powell, M. S. and Morrison, R. D. (2008). Applying computationally intensive techniques to modelling of comminution devices. XXIV International Mineral Processing Congress (XXIV IMPC), Beijing, China, 24-28 September 2008. Beijing, China: Science Press.
Powell, M., Weerasekara, N., Khanal, M. and Favier, J. (2008). Extraction of DEM collision data for input to breakage models. Comminution 08, Falmouth, Cornwall, U.K., 17-20 June, 2008.
Powell, M. S., Govender, I. and McBride, A. T. (2008). Applying DEM outputs to the unified comminution model. Discrete Element Methods (DEM) 07, Brisbane, Qld, Australia, 27-29 August, 2007. Oxford, England: Pergamon Press. doi: 10.1016/j.mineng.2008.06.010
Govender, I, and Powell, M. S. (2007). A 3D X-ray Vision System for Studying Discrete Particulate Behaviour. Discrete Element Methods 07, Brisbane, Australia, 27-29 August, 2007.
Govender, I, Powell, M S, Chandramohan, R, Parker, D J, Fan, X and Ingram, A (2007). Positron emission particle tracking of charge particles in a scaled industrial tumbling mill. Proceedings of Discrete Elements Methods 07, Brisbane, Aug 27-29, 2007. MEI Online.
McBride, A.T. and Powell, M.S. (2007). Using DEM to inform experimental design. Discrete Element Methods, Brisbane, Australia, 27-29 August, 2007.
van der Westhuizen, A. P .P and Powell, M. S. (2006). Milling curves as a tool for characterising SAG mill performance. International autogenous and semiautogenous grinding technology, Vancouver, Canada, 24-27 September 2006. Vancouver, Canada: University of British Columbia, Dept of Mining and Mineral Process Engineering.
Mainza, N, Powell, Malcolm and Morrison, R. D. (2006). A review of SAG circuits closed with hydrocyclones. SAG 2006, Vancouver Canada, 24-27 September 2006. Vancouver, Canada: CIM.
McBride, A. T. and Powell, Malcolm S. (2006). A structured approach to modelling SAG mill liner wear - Numerical modelling of liner evolution. International autogenous and semi autogenous grinding technology 2006, Vancouver, Canada, 24-27 September 2006. Canada: CIM.
Condori, P. and Powell, M.S. (2006). A Proposed Mechanistic slurry discharge model for AG/SAG mills. International autogenous and semiautogenous grinding technology, Vancouver, Canada, 23-27 September, 2006. Vancouver, Canada: University of British Columbia, Dept of Mining and Mineral Process Engineering.
Powell, M.S. (2006). The Unified Comminution Model - a Conceptually New Model. Proceedings of the XXIII International Mineral Processing Congress, Istanbul, Turkey, 3 - 8 September, 2006.
Govender, I. and Powell, M. S. (2006). An empirical power model derived from 3D particle tracking experiments. Computational Modelling ’05, Cape Town, South Africa, 7-9 November 2005. Kidlington, Oxford, U.K.: Pergamon Press. doi: 10.1016/j.mineng.2006.03.017
Mwansa, S., Condori, P. and Powell, M. S. (2006). Charge segregation and slurry transport in long SAG mills. XXIII International Mineral Processing Congress (IMPC 2006), Istanbul, Turkey, 3-8 September 2006. Istanbul, Turkey: Promed Advertising.
Mainza, A. N., Powell, M.S. and Knopjes, B. (2006). Enhancing platinum recovery with the three-product cyclone. XXIII International Mineral Processing Congress, Istanbul, Turkey, 3-8 September 2006. Istanbul, Turkey: Promed Advertising Agency.
Mainza, A and Powell, Malcolm (2006). RoM Ball mills - a comparison with AG/SAG milling. International autogenous and semi autogenous grinding technology 2006, Vancouver, Canada, 24 - 27 September 2006. Vancouver, Canada: CIM.
Powell, M., Condori, P., Smit, I. and Valery, W. (2006). The value of rigorous surveys - the Los Bronces experience. International autogenous and semi autogenous grinding technology 2006, Vancouver, Canada, 24 - 27 Septmeber 2006. Canada: CIM.
Powell, M. and Chandramohan, R. (2006). A structured approach to modelling SAG mill liner wear - monitoring wear. International Autogenous and Semiautogenous Grinding Technology 2006, Vancouver, Canada, 24-27 September 2006. Vancouver, Canada: CIM.
Sweet, C.G., Sweet, J. A., Harris, M. C., Powell, M. S., Lambert, A. S., Charlesworth, P. and Knopjes, L. M. (2006). Industry taking the initiative in developing high calibre technical staff. The XXIII International Mineral Processing Congress, Istanbul, Turkey, 3-8 September 2006. Istanbul, Turkey: Promed Advertising Ltd.
Govender, I. and Powell, M. S. (2006). Investigating SAG model assumptions using laboratory 3D trajectory data. International autogenous and semiautogenous grinding technology, Vancouver, Canada, 24-27 September 2006. Vancouver, Canada: University of British Columbia, Dept of Mining and Mineral Process Engineering.
Powell, Malcolm S. and Morrison, Rob D. (2006). A new look at breakage testing. 11th Euro. Symp. Comminution, Budapest, Hungary, 9-12 October, 2006. European Federation of Chemical Engineers.
Morrison, R., Loveday, B., Powell, M. S., Djordjevic, N. and Cleary, P. (2006). Applying discrete element modelling to different modes of breakage in AG and SAG mills. International autogenous and semiautogenous grinding technology 2006, Vancouver, Canada, 23-27 September, 2006. Vancouver, Canada: University of British Columbia, Dept. of Mining Engineering.
Govender, I., McBride, A. T. and Powell, M. S. (2006). Development of DEM validation tools with 3D X-ray particle tracking system. SEM06, St Louis, 4-7 June, 2006. USA: Society for Experimental Mechanics.
Powell, M. S. and Valery, W. (2006). Slurry pooling and transport issues in SAG mills. International autogenous and semiautogenous grinding technology, Vancouver, Canada, 24-27 September, 2006. Vancouver, Canada: University of British Columbia, Dept. of Mining Engineering.
Chandramohan, R. and Powell, M. S. (2005). Measurement of particle interaction properties for incorporation in the discrete element method simulation. JKMRC International Student Conference, Brisbane, Australia, 6-7 September 2004. Oxford, U.K.: Elsevier. doi: 10.1016/j.mineng.2005.06.004
Sarracino, R.S., McBride, A.T. and Powell, M.S. (2004). Using Particle Flow Code to investigate energy dissipation in a rotary grinding mill. Numerical Modeling in Micromechanics via Particle Methods, Kyoto, Japan, 28-29 October, 2004. Itasca.
Mainza, A., Powell, M. S. and Knopjes, B. (2004). A comparison of different cyclones in addressing challenges in the classification of the dual density UG2 platinum ore. First International Platinum Conference ‘Platinum Adding Value’, Sun City, Rustenburg, South Africa, 3-7 October, 2004. Johannesburg, South Africa: The South African Institute of Mining and Metallurgy (SAIMM).
Mainza, A. and Powell, M.S. (2003). Use of the three-product cyclone in dual-density ore classification. IMPC 2003, Cape Town, South Africa, 29 September- 3 October, 2003.
Powell, M. S., McBride, A. T. and Govender, I. (2003). Application of DEM Outputs to Refining Applied SAG Mill Models. IMPC 2003 Conference, Cape Town, South Africa, 28 September - 3 October , 2003. Marshalltown, South Africa: South African Institute of Mining and Metallurgy.
McBride, Andrew, Govender, Indresan, Powell, Malcolm and Balden, Victor (2002). Three Dimensional Validation of Discrete Element Method (DEM) using a laboratory ball mill. Discrete Element Methods 2002, Santa Fe, New Mexico, 23-25 September, 2002. New York: American Society of Civil Engineers. doi: 10.1061/40647(259)37
Powell., M. S. (2002). South African progress on closing the design gap between High- and Low-aspect SAG mills. Canadian Mineral Processors, xx, 22-24 January, 2002. CIM.
Newspaper Article
Ballantyne, Grant and M. S. Powell (2015, 03 26). Putting the microscope over power consumption Queensland Industry Advocate