오종기 황기엽 2024-01-22T02:35:07Z 2024-01-22T02:35:07Z 2022-01-10 1978-01 https://pubs.kist.re.kr/handle/201004/148291 Korean 저질탄의 활용에 관한 고찰 Review on the utilization of domestic high-ash coal. Article 2 Energy, v.1, no.3, pp.40 - 51 Energy 1 3 40 51 N other anthracite high-ash coal utilization price structure coal industry coal preparation coal usages