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Phase Equilibria in Ferrous Calcium Silicate Slags: Part III. Copper-Saturated Slag at 1250 °C and 1300 °C at an Oxygen Partial Pressure of 10−6 atm

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Abstract

Ferrous calcium silicate slags are potentially important for future practice in copper converting operations and process, and can be described by the “Cu2O”-FeO-Fe2O3-CaO-SiO2 system. Experimental methods, using the equilibration/quenching/electron probe X-ray microanalysis (EPMA) techniques, have been further developed to investigate the phase equilibria of these slags at copper saturation. Liquidus and solidus data are reported for the primary phase fields of spinel and pseudo-wollastonite at 1250 °C and 1300 °C, and at an oxygen partial pressure of 10−6 atm. The resulting data have been used to construct liquidus and solidus isotherms in the “FeO”-CaO-SiO2 system in equilibrium with metallic copper.

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Notes

  1. ISACONVERT is a trademark of Xstrata Technology Pty Ltd., Brisbane, Australia.

  2. JEOL is a trademark of Japan Electron Optics Ltd., Tokyo.

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Acknowledgments

The authors thank the following for their assistance in this project: Ms. Jie Yu and Dr. Baojun Zhao, Pyrometallurgy Research Centre (PYROSEARCH), University of Queensland; Alistair Burrows, Gerardo Alvear, Bill Errington, James Edwards, and Philip Arthur, Xstrata Technology; and Mr. Ron Rasch, Mr. Kim Sewell, and Ms. Ying Yu, Centre for Microscopy and Microanalysis (CMM), University of Queensland. Xstrata Technology and the Australian Research Council provided financial support for this project under the ARC Linkage Program.

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Authors and Affiliations

  1. PYROSEARCH–Pyrometallurgical Research Centre, The School of Engineering, The University of Queensland, Brisbane, 4072, Australia

    Stanko Nikolic (Postdoctoral Student), Peter C. Hayes (Centre Director) & Evgueni Jak (Research Director)

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  1. Stanko Nikolic
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  2. Peter C. Hayes
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  3. Evgueni Jak
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Correspondence to Stanko Nikolic.

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Manuscript submitted July 25, 2007.

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Nikolic, S., Hayes, P. & Jak, E. Phase Equilibria in Ferrous Calcium Silicate Slags: Part III. Copper-Saturated Slag at 1250 °C and 1300 °C at an Oxygen Partial Pressure of 10−6 atm. Metall Mater Trans B 39, 200–209 (2008). https://doi.org/10.1007/s11663-008-9128-8

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