Geochemistry of Mercury in the Permian Tectonically Deformed Coals from Peigou Mine, Xinmi Coalfield, China |
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| Authors: | SONG Dangyu LI Chunhui SONG Boyi YANG Cunbei and LI Yunbo |
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| Institution: | 1. Institute of Resource and Environment, Henan Polytechnic University, Henan, China;2. Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region, Henan, China;3. State Key Laboratory of Coal Resoures and Safe Mining, China University of Mining and Technology, China;4. Yanghe Coal Industry, Zhengzhou Coal Mining Group Co., Ltd., Henan, China |
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| Abstract: | As the mercury emitted from coal combustion can lead to serious environmental issues, researchers pay more attention to the content, distribution and occurrence of mercury in coal. In this paper, the content, distribution, and occurrence of mercury in the Permian tectonically deformed coals from Peigou Mine, Xinmi coalfield, Henan Province were investigated. A total of 18 bench samples were taken from No.2-1 coals seam in Peigou Mine, including 15 coal bench samples, two roofs and one floor. The mercury concentration, mineral composition, and main inorganic element content of 18 samples were determined by DMA-80 direct mercury analyzer, XRD, and XRF respectively. The results show that the mercury content ranges from 0.047 ppm to 0.643 ppm, with an average of 0.244 ppm. Though the coal seam has turned into typical tectonically deformed coal by the strong tectonic destruction and plastic deformation, the vertical distribution of mercury has remarkable heterogeneity in coal seam section. By the analysis of correlation between mercury and the main inorganic elements and the mineral composition in coal, we infer that majority of mercury mainly relates to pyrite or kaolinite. |
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| Keywords: | mercury in coal minerals in coal tectonically deformed coal modes of occurrence |
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