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Thermal effect on fluorine emission in coal and clay minerals

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Abstract

Fluorine in coal is important because of not only its association with indicators of mineralization, but also environmental concerns relevant to the health of plants, animals and humans. In order to analyze the fluorine emission characteristics, this paper summarizes the laboratory data from a number of Chinese literatures of fluorine emission of coal and clay minerals for high-temperature heating. The range of temperature to which specimens have been exposed is room temperature to 1200 °C. The variation of fluorine emission has a significant increase with increasing temperature between the ranges 400–1200 °C, especially above 600 °C. Besides, environmental humidity has obvious influence on fluorine releasing.

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Acknowledgements

This research was supported by the National Science Foundation of China (Grant Nos. 41672279, 51578464) and the Priority Academic Program Development of Jiangsu Higher Education Institutions. Sun Qiang also acknowledges the support of the China Scholarship Council (CSC, Grant No. 201506425041) travel grant and the support of the Department of Civil and Environmental Engineering at the University of North Carolina at Charlotte.

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Authors and Affiliations

  1. School of Resources and Geosciences, China University of Mining and Technology, Xuzhou, Jiangsu Province, 221116, People’s Republic of China

    Qiang Sun & Yuliang Zhang

  2. State-Province Joint Engineering Laboratory in Spatial Information Technology for High-Speed Railway Safety, Southwest Jiaotong University, Chengdu, Sichuan Province, 610031, People’s Republic of China

    Qiang Sun, Yuchun Zhang & Yuliang Zhang

  3. Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, Jiangsu Province, 221116, People’s Republic of China

    Huan He

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  1. Qiang Sun
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  2. Yuchun Zhang
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Correspondence to Yuchun Zhang.

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Sun, Q., Zhang, Y., Zhang, Y. et al. Thermal effect on fluorine emission in coal and clay minerals. Environ Earth Sci 76, 579 (2017). https://doi.org/10.1007/s12665-017-6930-0

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