Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when dead plant matter decays into peat and is converted into coal by the heat and
Coke is a grey, hard, and porous fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of air — a destructive distillation process. It is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges when air
Coal-based kiln-type processes are also used for DRI, sometimes referred to as sponge iron. A number of relatively new ironmaking processes for directly smelting iron ore have been developed which, like the EAF, will also eliminate the need for cokemaking and ore agglomeration processes such as sinter or pellet plants.
Note: Data on delivered industrial sector energy consumption do not include conversion losses at electricity sector generation plants. Delivered Delivered energy includes fuels (natural gas, coal, liquids, and renewables) used for combined heat and power facilities (cogeneration) in the industrial sector.
This coal type is mostly used for power generation, cement manufacturing and other industrial purposes, while metallurgical coal is used primarily for manufacturing iron and steel. Anthracite is the most mature coal and thus has the highest carbon content of any type of coal.
This coal is also known as thermal coal, steam coal, or boiler coal. Non coking coal has three uses in ironmaking. It is mainly used (i) for pulverized coal injection (PCI) into blast furnace, (ii) for the production of direct reduced iron (DRI) in coal based direct reduction processes, and (iii) for ironmaking by Corus, Finex and other iron smelting processes.