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Experimental Investigation of Gas/Matte/Spinel Equilibria in the Cu-Fe-O-S System at 1473 K (1200 °C) and P(SO2) = 0.25 atm

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Abstract

The Cu-Fe-O-S system is the key system for the characterisation of the phase chemistry in high-temperature copper making processes. An experimental study was undertaken to investigate the gas/matte/spinel equilibria in the Cu-Fe-O-S system at 1473 K (1200 °C), P(SO2) = 0.25 atm, and a range of oxygen partial pressures. The experimental methodology involved high temperature equilibration using a primary phase substrate technique in controlled gas atmospheres (CO/CO2/SO2/Ar), rapid quenching of the equilibrated phases, followed by direct measurement of phase compositions using electron probe x-ray microanalysis. Particular attention was given to the analysis of reactions during equilibration and confirmation of the achievement of equilibrium in the present study. The new data provide important information for understanding of the gas/matte/spinel interactions at high temperature and provide an essential foundation for the development of the multicomponent thermodynamic database for copper-containing systems.

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Acknowledgments

The authors would like to thank the Australian Research Council Linkage program LP140100480, Altonorte Glencore, Atlantic Copper, Aurubis, BHP Billiton Olympic Dam Operation, Kazzinc Glencore, PASAR Glencore, Outotec Oy (Espoo), Anglo American Platinum, Umicore, and Rio Tinto Kennecott for the financial and technical support for this research. The authors acknowledge the support of the AMMRF at the Centre for Microscopy and Microanalysis at the University of Queensland.

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  1. Pyrometallurgy Innovation Centre (PYROSEARCH), School of Chemical Engineering, The University of Queensland, Brisbane, QLD, 4067, Australia

    Taufiq Hidayat, Peter C. Hayes & Evgueni Jak

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  1. Taufiq Hidayat
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  3. Evgueni Jak
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Correspondence to Taufiq Hidayat.

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Hidayat, T., Hayes, P.C. & Jak, E. Experimental Investigation of Gas/Matte/Spinel Equilibria in the Cu-Fe-O-S System at 1473 K (1200 °C) and P(SO2) = 0.25 atm. J. Phase Equilib. Diffus. 39, 138–151 (2018). https://doi.org/10.1007/s11669-018-0616-5

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  • DOI: https://doi.org/10.1007/s11669-018-0616-5

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