Home > Coke (coal)

Coke typically has a specific gravity in the range 1.85 - 1.9. It is highly porous, and a mass of coke has 40% greater volume than the equivalent mass of coal.

Since the smoke-producing constituents are driven off during the coking of the coal, coke forms a desirable fuel for stoves and furnaces in which conditions are not suitable for the complete burning of bituminous coal itself. Coke may be burned with little or no smoke under combustion conditions which would result in a large amount of smoke were bituminous coal the fuel. 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 28 million joules/ kilogramThe kilogram (symbol: kg is the SI base unit of mass. A gram is defined as one thousandth of a kilogram. Conversion of units describes equivalent units of mass in other systems. Multiples SI prefixes are used to name multiples and subdivisions of the kilo.

The use of coke as a fuel was pioneered in 17th century16th century 17th century 18th century more centuries) As a means of recording the passage of time, the 17th century was that century which lasted from 1601- 1700. During this period, the power of England and the United Provinces increased; while that of EnglandEngland is the largest, the most populous, and the most densely populated of the four " Home Nations" which make up the United Kingdom of Great Britain and Northern Ireland (UK). Occupying the south-eastern portion of the island of Great Britain, England in response to the ever-growing problem of European deforestationDeforestation in general is the removal of trees. This often is a result of human activities. Deforestation has been practiced by humans for thousands of years chiefly as a result of clearing land for commercial and industrial development, cutting wood fo. Wood was becoming increasingly scarce and expensive, and coal's fumes, particularly smoke and sulfurSulfur (or sulphur see spelling) is the chemical element in the periodic table that has the symbol S and atomic number 16. An abundant tasteless odorless multivalent non-metal, sulfur is best known as yellow crystals and occurs in many sulfide and sulfate compounds, disqualified it from many applications, including cooking and ironThis article is about metallic iron. For the ironing device, see ironing manganese iron cobalt Fe Ru Full table General Name, Symbol, Number iron, Fe, 26 Chemical series transition metal Group, Period, Block 8 (VIIIB), 4 , d Density, Hardness 7874 kg/m3, smelting. In 1603, Sir Henry Platt suggested that coal might be charred in a manner analogous to the way charcoalCharcoal is the blackish residue consisting of impure carbon obtained by removing water and other volatile constituents of animal and vegetable substances. It is usually produced by heating wood in the absence of oxygen (see char), but sugar charcoal, bon is produced from wood. This process was not put into practice, however, until 1642, when coke was used for roasting malt in Derbyshire. (Coal could not be used in brewing, because its sulfurous fumes would impart a foul taste to the resulting beer.) Perhaps more significantly, in 1709, Abraham Darby set up a coke-fired blast furnace to produce cast iron. The ensuing availability of inexpensive iron was one of the factors leading to the European industrial revolution.

The solid residue remaining from the refinement of petroleum by the " cracking" process is also a form of coke. Petroleum coke has many uses besides being a fuel, such as the manufacture of dry cells, electrodes, etc. Gas works that manufacture syngas also produce coke as an end product, called gas house coke.