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http://dx.doi.org/10.12654/JCS.2013.29.4.05

Comparison Study for Domestic Coal and Material Characteristics of Coal from the Shipwreck of Koryo Dynasty  

Lee, JangJon (Conservation Science Division, National Research Institute of Cultural Heritage)
Park, SukWhan (Hanjin D&B)
Lim, SungTae (National Research Institute of Maritime Cultural Heritage)
Han, MinSu (Conservation Science Division, National Research Institute of Cultural Heritage)
Publication Information
Journal of Conservation Science / v.29, no.4, 2013 , pp. 345-354 More about this Journal
Abstract
This study analyses geochemistrical, microscopic, mineralogical characteristics of coals which have been collected from in and out of the shipwreck No 1 of Mado island during underwater excavation in Taean. The result from mineralogical and geochemical analysis reveals that the specific gravity of the coals is $1.28g/cm^3$. Considering that coals contains 10% mineral of it and the specific gravity of the pure is $1.15g/cm^3$, it is believed that the collected coals would be lignite or biturminous coal. The X-ray diffraction analysis which displays the peak of $2{\theta}$ is 20~25C degree, proves that the collected coals would be categorised as low rank coal. The collected coals is composed of: 93%-94%(93.5%) of vitrinite maceral group, 5%-6%(5.5%) of exinite maceral group, and 1% of inertinite maceral group. In addition, the average of reflection rate is $R_{mean}$: 0.627 showing that it would be either high volatile bituminous C coal or sub-bituminous C coal. Such result confirms that the coal is sub-bituminous C or high volatile bituminous C coal in accordance with the U.S Bureau of Mine(USBM) classification system. The element analysis reveals that the coal is the coking coal which is grouped as the bituminous coal. Comparative analysis between the coals of Mado Shipwreck No 1 and domestic coals shows that the coals of Mado Shipwreck is similar to the bituminous coal used in the area of Janggi in Pohang city.
Keywords
Coal; Mado shipwreck No.1; Maceral; Proximate analysis; Sub-bituminous coal;
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