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Coal
Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure. Coal is composed primarily of carbon along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.
Contributors in 石炭
Coal
ウランhexaflouride(六フッ化ウラン)
エネルギー; 石炭
56 ℃ 以上の温度で蒸気を形作る U3O8and の化学的処理によって得られた白色固体。UF6 はウラン濃縮プロセスに必要な形式です。