Coke /koʊk/ (German Koks, English coke) is a solid carbonaceous residue formed when various types of fuel (coal, peat and other organic substances) are heated without air access to 950-1050°C. In ferrous metallurgy, coal is used as fuel in blast furnaces and cupola furnaces. widely spread. The carbon content in carbon is 96-98%, the lower calorific value is 29 mJ/kg. Petroleum and electrode pitch K.I are used as fuel in the manufacture of carbon and graphite electrodes, less commonly