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Effects of Al2O3 and CaO/SiO2 Ratio on Phase Equilbria in the ZnO-“FeO”-Al2O3-CaO-SiO2 System in Equilibrium with Metallic Iron

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Abstract

The phase equilibria and liquidus temperatures in the ZnO-“FeO”-Al2O3-CaO-SiO2 system in equilibrium with metallic iron have been determined experimentally in the temperature range 1383 K to 1573 K (1150 °C to 1300 °C). The experimental conditions were selected to characterize lead blast furnace and imperial smelting furnace slags. The results are presented in a form of pseudoternary sections ZnO-“FeO”-(Al2O3 + CaO + SiO2) with fixed CaO/SiO2 and (CaO + SiO2)/Al2O3 ratios. It was found that wustite and spinel are the major primary phases in the composition range investigated. Effects of Al2O3 concentration as well as the CaO/SiO2 ratio on the primary phase field, the liquidus temperature, and the partitioning of ZnO between liquid and solid phases have been discussed for zinc-containing slags.

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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 as well as Ms. Xinrui Zhang, who provided general laboratory assistance and undertook much of the careful sample preparation and measurement work.

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Authors and Affiliations

  1. PYROSEARCH, Pyrometallurgy Research Centre, School of Chemical Engineering, The University of Queensland, Brisbane, QLD, 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 May 25, 2010.

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Zhao, B., Hayes, P.C. & Jak, E. Effects of Al2O3 and CaO/SiO2 Ratio on Phase Equilbria in the ZnO-“FeO”-Al2O3-CaO-SiO2 System in Equilibrium with Metallic Iron. Metall Mater Trans B 42, 50–67 (2011). https://doi.org/10.1007/s11663-010-9443-8

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