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Metallurgical and Materials Transactions B

, Volume 49, Issue 4, pp 1750–1765 | Cite as

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

  • Taufiq Hidayat
  • Ata Fallah-Mehrjardi
  • Peter C. Hayes
  • Evgueni Jak
Article

Abstract

New experimental data were obtained on the gas/slag/matte/spinel equilibria in the Cu-Fe-O-S-Si system at 1473 K (1200 °C) and P(SO2) = 0.25 atm covering Cu concentrations in matte between 42 and 78 wt pct Cu. Accurate measurements were obtained using high-temperature equilibration and the rapid quenching technique, followed by electron-probe X-ray microanalysis of equilibrium phase compositions. The use of spinel substrates made to support the samples ensures equilibrium with this primary phase solid, eliminates crucible contamination, and facilitates direct gas–condensed phase equilibrium and high quenching rates. Particular attention was given to the confirmation of the achievement of equilibrium. The results quantify the relationship between Cu in matte and oxygen partial pressure, sulfur in matte, oxygen in matte, Fe/SiO2 at slag liquidus, sulfur in slag, and dissolved copper in slag.

Notes

Acknowledgments

The authors 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. They also acknowledge the support of the AMMRF at the Centre for Microscopy and Microanalysis, University of Queensland.

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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2018

Authors and Affiliations

  • Taufiq Hidayat
    • 1
  • Ata Fallah-Mehrjardi
    • 1
    • 2
  • Peter C. Hayes
    • 1
  • Evgueni Jak
    • 1
  1. 1.Pyrometallurgy Innovation Centre (PYROSEARCH), School of Chemical EngineeringThe University of QueenslandBrisbaneAustralia
  2. 2.Research Development and InnovationAurubis AGHamburgGermany

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