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Mineralogical and Drying Characteristics of Chinese Low Rank Coal for Coal Gasification  

Park, Chong-Lyuck (Mineral Resources Research division, Korea Institute of Geoscience and Mineral Resources)
Kim, Byoung-Gon (Mineral Resources Research division, Korea Institute of Geoscience and Mineral Resources)
Jeon, Ho-Seok (Mineral Resources Research division, Korea Institute of Geoscience and Mineral Resources)
Kim, Sang-Bae (Mineral Resources Research division, Korea Institute of Geoscience and Mineral Resources)
Park, Suk-Hwan (Mineral Resources Research division, Korea Institute of Geoscience and Mineral Resources)
Lee, Jae-Ryeong (Department of Energy & Mineral Resources Engineering, Kangwon National University)
Publication Information
Journal of the Mineralogical Society of Korea / v.23, no.3, 2010 , pp. 199-209 More about this Journal
Abstract
Coal gasification technology in the sector of domestic clean coal technologies is being into the limelight since recent dramatic rise of international oil price. In this study, we used a low rank coal from Inner Mongolia, China as a starting material for gasification. Various properties including optical, mineralogical, X-ray spectroscopic, X-ray diffraction, and drying property were measured and tested in order to estimate the suitability of the coal to gasification. The coal was identified as a brown coal of lignite group from the measurement of vitrinite reflectance. The coal has very low slagging and fouling potentials, and the ignition temperature is about $250^{\circ}C$. The major impurities consist of quartz, siderite, and clay minerals. Additionally, the coal had moisture content above 28%. Tests for finding effective drying method showed that the microwave drying is more effective than thermal drying.
Keywords
Low rank coal; gasification; drying; microwave; impurity;
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