Toronto Geological Discussion Group
Nathan Stubina, VP Technologies, Sherritt International
In this talk, we will examine some of the unit operations used to process gold ores. We will look at simple processing routes such as heap leach operations, and then move on to more complex flow sheets that incorporate roasting or leaching. We will examine how mineralogy impacts the type of circuit selected, and the amount of liberation required. Other parameters such as metal/mineral association (e.g. Cu/As/Ag etc.), economics, the size of the deposit, geometallurgy, etc. all have an impact on the processing route.
Nathan joined Sherritt International as VP Technologies in November 2018. Prior to that, he was Managing Director of Innovation for McEwan Mining. With 30 years of international industrial experience, Nathan also worked at various major mining companies including Barrick Gold Corp., Noranda Inc., and Falconbridge Ltd.
Nathan holds a PhD in Metallurgy and Materials from the University of Toronto, and a B.Eng in Mining and Metallurgical Engineering from McGill University.
Nathan is currently a member of PEO, and was VP International of the CIM. he is a Past-President of MetSoc (Metallurgy and Materials Society of the CIM), a certified Six Sigma Master Black Belt and a member of the Lassonde Institute of Mining's Advisory Committee at the University of Toronto. Dr. Stubina was names as a Fellow of the CIM in 2012.
For those members unable to attend in person, feel free to register for our live online broadcast sponsored by Geosoft. Click here to register.
Thanks to our sponsor!
Big thanks to Sherritt International for sponsoring the talk and networking reception!
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