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J. Conserv. Sci > Volume 29(4); 2013 > Article
Journal of Conservation Science 2013;29(4):345-354.
DOI: https://doi.org/10.12654/JCS.2013.29.4.05    Published online December 30, 2013.
고려시대 선체출토 석탄의 재료학적 특성 및 국산 석탄과의 비교 연구
이장존, 박석환, 임성태, 한민수
Comparison Study for Domestic Coal and Material Characteristics of Coal from the Shipwreck of Koryo Dynasty
JangJon Lee, SukWhan Park, SungTae Lim, MinSu Han
초 록
태안군 마도 해역 해저에서 인양된 마도 1호선의 선체 내·외부에서 출토된 석탄의 지구화학적 및 광학적, 광물학적 특성을 분석하였다. 연구 결과, 석탄의 비중은 1.28g/cm3로 약 10%의 광물질 함유 상태를 고려하면 순수한 석탄만의 비중은 1.15g/cm3 정도이며, 갈탄과 유연탄 사이의 범위 해당된다. X-선 회절분석 결과는 peak점의 2θ는 20°~23° 사이로 낮은 탄화정도의 석탄에 해당되었으며, 석탄구성물질 분류에서 비트리나이트 군이 93~94%, 엑시나이트 군이 5~6%, 인어티나이트군이 1% 이었다. 또한 석탄의 비트리나이트 평균반사율은 Rmean: 0.627로 고휘발분역청탄 C(high volatile bituminous C coal) 또는 아역청탄 A(sub-bituminous A coal)에 해당된다. 공업분석 결과 미국 광무국의 기준에 의하면 아역청탄 A(sub-bituminous A coal) 또는 고휘발분역청탄 C(high volatile bituminous C coal)에 해당되며, 원소분석 결과 역청탄에 해당되는 점결탄으로 분류된다. 마도1호선 석탄과 국내 석탄을 비교 분석 결과 포항 인근 장기지역의 갈탄과 유사하였다.
중심어: 석탄, 마도 1호선, 마세랄, 공업분석, 아역청탄
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/cm3. Considering that coals contains 10% mineral of it and the specific gravity of the pure is 1.15g/cm3, it is believed that the collected coals would be lignite or biturminous coal. The X-ray diffraction analysis which displays the peak of 2θ 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 Rmean: 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.
Key Words: Coal, Mado shipwreck No.1, Maceral, Proximate analysis, Sub-bituminous coal


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