Steam coal is a mid-quality coal, halfway between anthracite and bituminous coal. Also known as thermal coal, this material is mostly used for electricity production through steam generation. It is also used for heating purposes or as direct source of process heat.
PCI (pulverised coal injection) coal is essentially high-quality thermal coal which can be injected into historically dominant blast furnaces to reduce more expensive coking coal consumption. It serves as a supplementary source of carbon and heat in blast furnaces, enhancing the efficiency of molten iron production.
Metallurgical coal or coking coal is a grade of coal that can be used to produce good-quality coke. It is a naturally occurring sedimentary rock found within the earth’s crust. It is an essential ingredient in the production of steel, making it one of the most widely used building materials on earth. it is a bituminous coal with a suitable quality that allows the production of metallurgical coke, or simply named coke.
Anthracite, also known as hard coal and black coal, is a hard, compact variety of coal that is the highest rank coal. It contains more fixed carbon (86 percent or greater on a dry, ash-free basis) than any other form of coal and the least amount of volatile matter. Due to the lack of volatiles, it can only be burned in special boilers.
