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Phase Equilibria Study of the ZnO-“FeO”-SiO2-Al2O3 System at Po2 10−8 atm

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Abstract

Phase equilibria studies on ZnO-“FeO”-SiO2-Al2O3 system have been carried out in the temperature range between 1523 K and 1573 K (1250 °C and 1300 °C) at Po2 10−8 atm. Experimental techniques applied in the present study include high temperature equilibration, quenching, and electron probe X-ray microanalysis (EPMA). The compositions of the phases present in the quenched samples were measured by EPMA and used to construct phase diagrams of the pseudo-ternary sections at fixed Al2O3 content. The experimental results show that, spinel, SiO2, and willemite are the major primary phase fields in the composition range investigated. With 2 wt pct Al2O3 content in the liquid phase, the liquidus temperature can be increased by 35 K in the spinel primary phase in comparison with Al2O3-free system. The partitioning of ZnO and Al2O3 between the spinel and liquid phases is also discussed in the paper.

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Acknowledgments

The authors wish to thank Dongying Fangyuan Nonferrous Metals Co., Ltd. for providing the financial support to enable this research to be carried out. The University of Queensland International Research Tuition Award (UQIRTA) and China Scholarship Council (CSC) for providing scholarships for Hongquan Liu. Mr. Ron Rasch and Ms Ying Yu of the Centre for Microscopy and Microanalysis at the University of Queensland, who provided technical support for the EPMA facilities.

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Authors and Affiliations

  1. The University of Queensland, Brisbane, QLD, Australia

    Hongquan Liu (PhD Student), Mao Chen (Postdoctoral Research Fellow) & Baojun Zhao (Codelco-Fangyuan Professor)

  2. Dongying Fangyuan Nonferrous Metals Co., Ltd, Dongying City, China

    Zhixiang Cui (President)

Authors
  1. Hongquan Liu
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  2. Zhixiang Cui
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  3. Mao Chen
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  4. Baojun Zhao
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Corresponding author

Correspondence to Baojun Zhao.

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Manuscript submitted November 19, 2015.

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Liu, H., Cui, Z., Chen, M. et al. Phase Equilibria Study of the ZnO-“FeO”-SiO2-Al2O3 System at Po2 10−8 atm. Metall Mater Trans B 47, 1113–1123 (2016). https://doi.org/10.1007/s11663-016-0596-y

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  • DOI: https://doi.org/10.1007/s11663-016-0596-y

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