…Coal as mined (run-of-mine coal, raw coal) is generally of poor quality and unstable due to the inclusion of the bedrock of the coal seam and the intervening rock layers (partings). Therefore, before it is shipped as commercial coal, it is usually subjected to processing such as sorting to improve or stabilize the quality. … *Some of the terminology used to refer to "run-of-mine coal" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…採掘されたままの石炭(原炭run‐of‐mine coal,raw coal)は一般には炭層の母岩や炭層間に介在する岩石層(挟みpartings)の混入により品質が悪く,また不安定である。そこで,これを商品炭として出荷する前に品質を向上させ,あるいはその安定化をはかるために選別等の処理を施すのがふつうである。… ※「run-of-mine coal」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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