Coke (fuel) Coke (fuel) Coke is a fuel with a high carbon content and few impurities, made by heating coal in the absence of air. It is the solid carbonaceous material derived from destructive distillation of low-ash and low-sulfur bituminous coal. Cokes made from coal are grey, hard, and porous. While coke can be formed naturally, the commonly used form is synthetic. The form known as petroleum coke, or pet coke, is derived from oil refinery coker units or other cracking processes. Coke is used in preparation of producer gas which is a mixture of carbon monoxide (CO) and nitrogen (N). Producer
Colorado Fuel and Iron brand name until 2014 when it was closed. The mill is able to produce rail lengths of up to 480 feet (up from the current 80 feet), lengths currently possible only in a few European plants. Steelworks Museum Colorado Fuel and Iron The Colorado Fuel and Iron Company (CF&I) was a large steel concentration. By 1903, it was mainly owned and controlled by John D. Rockefeller and Jay Gould's financial heirs. While it came to control many plants throughout the country, its main plant was a steel mill on the south side of Pueblo, Colorado and was the city's main