Geometallurgical Design for a Large Copper-Molybdenum Concentrator
As a part of the 58th annual Conference of Metallurgists (COM 2019) in Vancouver from August 18 - 21, join SGS' David Hatton as he discusses Geometallurgical Design for a Large Copper-Molybdenum Concentrator.
Aug 18, 2019
Aug 21, 2019
Vancouver, BC, Canada
To obtain sufficient material on which to perform copper- molybdenum separation testwork a variability set of drill hole reject samples amounting to several tons was put together to include the different ore types proportions expected in the copper circuit. The samples were treated in a copper circuit pilot plant and enough mass of bulk concentrate was recovered to conduct copper moly separation tests in the laboratory.
Tests consisted of stage flotation reactor (SFR) rougher pilot plant tests, conventional laboratory rougher, cleaner and 4 stage open circuit cleaner tests. The mineralogical liberation analysis of the feed and concentrate was used to model the effect of liberation on the grade-recovery relationship of the different samples. Mineral kinetic parameters for the various samples were determined by calibration to the test data. The copper concentrate results as simulated from previous studies on the same deposit were used to simulate the variability in head grade and throughput expected for the feed to the copper molybdenum separation circuit for each of the first 10 years of production. This variation in feed was then simulated through the separation circuit to obtain optimised molybdenum grade recovery curves to forecast the circuit production for each of the first 10 years.
Entrainment, Flotation, Liberation, Modelling, Variability.
David Hatton, Geometallurgy Group Manager, SGS Minerals
David is a Metallurgist with a specialty in Mathematical modelling. He completed an honours degree in Industrial Mathematics before beginning a PhD in flotation circuit modelling at the University of Cape Town, South Africa. He has more than 15 years experience in the industry and has led site process surveys on all 6 continents. David worked for JKTech in Australia as a flotation specialist before joining SGS in the Geomet group. He has experience in site surveying and modelling of Copper, Zinc, Nickel, Platinum, Gold, and Lead flotation circuits. In 2018 David took over as manager of the Geomet group. David has a strong Mathematical background. He has developed many of the fundamental equations and algorithms in SGS’s in house Geometallurgical simulation software IGS. These include process optimization methodologies, economic models as well as risk quantification through Monte Carlo analysis. David is fluent in English and Afrikaans.
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About COM 2019
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