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The Influence of Temperature on the Gas/Slag/Matte/Spinel Equilibria in the Cu-Fe-O-S-Si System at Fixed P(SO2) = 0.25 atm

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Abstract

Equilibria between gas/slag/matte/spinel phases in the Cu-Fe-O-S-Si system have been experimentally studied at 1523 K (1250 °C), P(SO2) = 0.25 atm, and a range of oxygen partial pressures. The experimental technique involved high temperature equilibration using spinel substrates in controlled gas atmospheres (CO/CO2/SO2/Ar), rapid quenching of the equilibrated phases, and direct measurement of phase compositions using Electron Probe X-ray Microanalysis. The influence of temperature on the gas/slag/matte/spinel equilibria has been analyzed. Comparisons with previous studies on the gas/slag/matte/tridymite equilibria and the most recent thermodynamic database have been provided. This is the first systematic study on the influence of temperature on the gas/slag/matte/spinel equilibria in the Cu-Fe-O-S-Si system at P(SO2) = 0.25 atm.

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Acknowledgments

The authors would like to thank the Australian Research Council Linkage program LP140100480 “Creating sustainable copper supplies by using innovative high temperature chemical processing of highly complex impure ores and recycled materials.” We acknowledge and appreciate the financial and technical support for this work by the consortium of copper producers: Anglo American Platinum, Altonorte Glencore, Atlantic Copper, Aurubis, BHP Billiton Olympic Dam Operation, Boliden, Glencore Technologies, Kazzinc Glencore, PASAR Glencore, Outotec Oy (Espoo), Penoles, Rio Tinto Kennecott, and Umicore. The authors acknowledge the support of the AMMRF at the Centre for Microscopy and Microanalysis at the University of Queensland.

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Authors and Affiliations

  1. Metallurgical Engineering Research Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Bandung, West Java, 40132, Indonesia

    Taufiq Hidayat

  2. Research Development and Innovation Aurubis AG, 20539, Hamburg, Germany

    Ata Fallah-Mehrjardi

  3. Pyrometallurgy Innovation Centre (PYROSEARCH), School of Chemical Engineering, The University of Queensland, Brisbane, QLD, 4072, Australia

    Peter C. Hayes & Evgueni Jak

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  1. Taufiq Hidayat
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  2. Ata Fallah-Mehrjardi
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  3. Peter C. Hayes
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  4. Evgueni Jak
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Correspondence to Taufiq Hidayat.

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Manuscript submitted July 15, 2018.

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Hidayat, T., Fallah-Mehrjardi, A., Hayes, P.C. et al. The Influence of Temperature on the Gas/Slag/Matte/Spinel Equilibria in the Cu-Fe-O-S-Si System at Fixed P(SO2) = 0.25 atm. Metall Mater Trans B 51, 963–972 (2020). https://doi.org/10.1007/s11663-020-01807-x

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