Coke (fuel) - WikipediaCoke is a fuel with few impurities and a high carbon content, usually made from coal. It is the . The patent contains a distinct allusion to the preparation of coal by "cooking". In 1590 a patent was granted to the Dean of York to "purify pit-coal.preperation of coal and coke,Coal sampling and analysis standards - United States Energy .preparation and routine tests of coal specified in the international Standards. ... the testing and chemical analysis of coal, coke, natural gas and other gaseous.
preperation of coal and coke