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Synthesis of Rutile TiO2 from Panzhihua Sulfate Titanium Slag by Microwave Heating

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Abstract

This study aimed to assess the utilization of microwave heating for synthesis of rutile TiO2 by employing sulfate titanium slag produced by Panzhihua Iron and Steel Research Institute. To this end, the properties of sulfate titanium slag before and after microwave treatment, i.e., its crystal structure, surface microstructure, and surface chemical functional groups, were characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transformation infrared (FT-IR) spectroscopy, respectively. Results of XRD analysis showed that the anosovite phase of the sulfate titanium slag transformed to the rutile TiO2 phase under microwave heating at 1100°C for duration of 120 min. Correspondingly, the SEM images revealed that the surface of the sulfate titanium slag grew as a granular substance after microwave roasting. The granular substance was observed to be rutile TiO2 with a rod-shaped structure. FT-IR spectra demonstrated the occurrence of a blue shift at 472.15 cm−1, indicating phase transformation from anosovite to rutile TiO2 because of the roasting process. From the experimental results, it is concluded that microwave heating can be an effective and efficient approach for the synthesis of synthetic rutile TiO2 from sulfate titanium slag.

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Acknowledgements

Financial support from the National Scientific Foundation of China (Nos. 51504110, 51404114), the Open Research Fund of State Key Laboratory of Multiphase Complex Systems (No. MPCS-2017-D-05), and the Specialized Research Fund for the Doctoral Program of High Education (No. 20125314120014) is sincerely acknowledged.

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Authors and Affiliations

  1. Key Laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming, 650093, People’s Republic of China

    Hufei Chen, Yunqi Wu, Jinhui Peng & Jin Chen

  2. Key Laboratory of Resource Clean Conversion in Ethnic Regions of Education, Department of Yunnan, Joint Research Centre for International Cross-border Ethnic Regions Biomass Clean Utilization in Yunnan, Yunnan Minzu University, Kunming, 650500, People’s Republic of China

    Guo Chen & Jinhui Peng

  3. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Research Institute Co., Ltd., Panzhihua, 617000, People’s Republic of China

    Guo Chen

  4. State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China

    Guo Chen

  5. Chemical Engineering Program, Petroleum Institute, Abu Dhabi, UAE

    C. Srinivasakannan

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  1. Hufei Chen
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  2. Guo Chen
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  3. Yunqi Wu
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  4. Jinhui Peng
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  5. C. Srinivasakannan
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  6. Jin Chen
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Correspondence to Jin Chen.

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Chen, H., Chen, G., Wu, Y. et al. Synthesis of Rutile TiO2 from Panzhihua Sulfate Titanium Slag by Microwave Heating. JOM 69, 2660–2665 (2017). https://doi.org/10.1007/s11837-017-2545-x

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  • DOI: https://doi.org/10.1007/s11837-017-2545-x

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