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Coke (fuel)
Coal product used in making steel / From Wikipedia, the free encyclopedia
This article is about fuel coke derived from coal. For fuel coke derived from petroleum, see Petroleum coke. For other uses, see Coke (disambiguation).
Coke is a grey, hard, and porous coal-based fuel with a high carbon content. It is made by heating coal or oil in the absence of air. Coke is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges.
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The unqualified term "coke" usually refers to the product derived from low-ash and low-sulphur bituminous coal by a process called coking. A similar product called petroleum coke, or pet coke, is obtained from crude oil in oil refineries. Coke may also be formed naturally by geologic processes.[1] It is the residue of a destructive distillation process.