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Effect of B2O3 on the Structure and Viscous Behavior of Ti-Bearing Blast Furnace Slags

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Abstract

This study provided a fundamental analysis of the viscous behavior and structure of Ti-bearing blast furnace slags modified by different B2O3 additions with a basicity (CaO/SiO2) range of 0.5–0.9. The viscosity of slag melts was measured by rotating cylinder method, and the results showed that both slag viscosity and apparent activation energy for viscous flow remarkably decreased with B2O3 addition. To connect the viscosity variation of slags to the melt structure, Fourier transformation infrared spectroscopy analysis was performed. The results indicated that B2O3 acted as a typical network forming oxide, which was introduced into the network and existed dominantly as a two-dimensional structure, BO3 triangular. With the increase of B2O3 content, the stretching vibration of BO3 triangular gradually became more pronounced, which resulted in a simpler and less complex structure and caused the decrease of slag viscosity.

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Acknowledgements

The authors acknowledge financial support by the Common Development Fund of Beijing, the National Natural Science Foundation of China (51172003 and 51172001), the National High Technology Research and Development Program of China (863 Program, 2012AA06A114), and Key Projects in the National Science & Technology Pillar Program (2011BAB03B02 and 2013BAC14B07).

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Authors and Affiliations

  1. Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing, 100871, P.R. China

    Yongqi Sun, Kai Zheng, Xidong Wang & Zuotai Zhang

  2. Beijing Key Laboratory for Solid Waste Utilization and Management, College of Engineering, Peking University, Beijing, 100871, P.R. China

    Yongqi Sun, Kai Zheng, Xidong Wang & Zuotai Zhang

  3. Aluminum Corporation of China, Beijing, 100082, P.R. China

    Junlin Liao

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  1. Yongqi Sun
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  2. Junlin Liao
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Correspondence to Zuotai Zhang.

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Sun, Y., Liao, J., Zheng, K. et al. Effect of B2O3 on the Structure and Viscous Behavior of Ti-Bearing Blast Furnace Slags. JOM 66, 2168–2175 (2014). https://doi.org/10.1007/s11837-014-1087-8

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  • DOI: https://doi.org/10.1007/s11837-014-1087-8

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