Mineral coal charred, or depriver of its bitumen, sulphur, or other volatile matter by roasting in a kiln or oven, or by distillation, as in gas works. It is lagerly used where ? smokeless fire is required.
A solid carbonaceous residue derived from low-ash, low-sulfur bituminous coal from which the volatile constituents are driven off by baking in an oven at temperatures as high as 2,000 degrees Fahrenheit so that the fixed carbon and residual ash are fused together. Coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace. Coke from coal is grey, hard, and porous and has a heating value of 24.8 million Btu per ton.
Coal that has been processed to remove the impurities. In a coal forge, the coal must be partially burned (to produce coke) before the fire will burn cleanly. Coke can be purchased (in some locations) to make a hotter, cleaner fire than can usually be made with coal.
In general, coke is made from bituminous coal from which the volatile constituents are driven off by baking in an oven at temperatures as high as 2,000 degrees Fahrenheit, so that the fixed carbon and ash are fused together. Coke is hard and porous and is strong enough to support a load of iron ore in a blast furnace. It is used both as a fuel and a reducing agent in smelting iron ore in a blast furnace.
Coal from which most gases have been removed by heating. It burns with intense heat and little smoke, and is used as an industrial fuel. A solid residue left after the distillation of petroleum or other liquid hydrocarbons.
A residue high in carbon content and low in hydrogen that is the final product of thermal decomposition in the condensation process in cracking. This product is reported as marketable coke or catalyst coke. The conversion factor is 5 barrels (42 U.S. gallons each) per short ton.
A porous, solid residue resulting from the incomplete combustion of coal heated in a closed chamber, or oven, with a limited supply of air. Coke is largely carbon and is a desirable fuel in certain metallurgical industries.
Coke is a solid carbonaceous material derived from destructive distillation of low-ash, low-sulfur bituminous coal. The volatile constituents of the coal, including water, coal-gas and coal-tar, are driven off by baking in an airless oven at temperatures as high as 1,000 degrees Celsius so that the fixed carbon and residual ash are fused together. Most coke in modern times are produced in "by-product" coke ovens, such as the upper photograph, and the resultant coke is used as the main fuel in ironmaking blast furnaces.