How Is Coal Formed A Process Spanning Eras | Planète Énergies
Bituminous coal contains 70 to 86% carbon and 46 to 31% volatile matter. It is used to make . coke. Coke is a coal derivative obtained through pyrolysis. It consists of almost pure carbon and i... Go to definition, used in metallurgy. Subbituminous coal is 70 to 76% carbon and 53 to 42% volatile matter. It is burned in industrial boilers.