Home > Industry/Domain > Energy > Coal
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.
Industry: Energy
Add a new termContributors in Coal
Coal
barricading
Energy; Coal
In mining, it's the process by which a wall is created, or left intact, to protect sections of the mine from gas, fire and explosions.
belt conveyor
Energy; Coal
A mechanical device on which a looped belt carries materials through or out of the mine.
beneficiation
Energy; Coal
The process by which mined material is separated from waste through treatment.
bituminous coal
Energy; Coal
A soft coal that is considered better than lignite but worst than anthracite. It's about 60-80% carbon with the rest being water, air, hydrogen, and sulfur.