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Phase Equilibria Studies in the System ZnO-“FeO”-Al2O3-CaO-SiO2 Relevant to Imperial Smelting Furnace Slags: Part II

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Abstract

The phase equilibria and the liquidus temperatures in the system ZnO-“FeO”-Al2O3-CaO-SiO2 have been determined experimentally in equilibrium with metallic iron. Specifically, the effects of Al2O3 concentrations in Imperial Smelting Furnace slags are identified, and the results are presented in the form of pseudo-ternary sections ZnO-“FeO”-(Al2O3 + CaO + SiO2) in which CaO/SiO2 = 0.93 and (CaO + SiO2)/Al2O3 = 5.0 and 3.5, respectively. It was found that, in the presence of Al2O3, the spinel phase is formed, the spinel primary phase field expands, and the wustite and melilite primary phase fields are reduced in size with an increasing Al2O3 concentration. The implications of the findings to industrial practice are discussed.

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

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Acknowledgments

The authors wish to thank the Australian Research Council (ARC-SPIRT scheme), ISP Ltd., Britannia Zinc Ltd., Enivisorse SA, Pasminco Sulphide, Rio Tinto Technical Services, MHD GmbH, Metaleurop, and Hachinohe Smelting Co. Ltd. for providing the financial support to enable this research to be carried out, and for providing scholarship support. They also thank Ms. Xinrui Zhang, who provided general laboratory assistance and undertook much of the careful sample preparation and measurement work. Finally, the authors wish to thank Mr. Ron Rasch and Ms. Ying Yu of the Centre for Microscopy and Microanalysis at the University of Queensland, who provided support for the EPMA facilities.

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Authors and Affiliations

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

    Baojun Zhao (Senior Research Fellow), Peter C. Hayes (Professor) & Evgueni Jak (Professor)

Authors
  1. Baojun Zhao
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  2. Peter C. Hayes
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  3. Evgueni Jak
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Correspondence to Baojun Zhao.

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Manuscript submitted September 18, 2009.

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Zhao, B., Hayes, P.C. & Jak, E. Phase Equilibria Studies in the System ZnO-“FeO”-Al2O3-CaO-SiO2 Relevant to Imperial Smelting Furnace Slags: Part II. Metall Mater Trans B 41, 386–395 (2010). https://doi.org/10.1007/s11663-010-9343-y

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