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  2. Anthracite - Wikipedia

    en.wikipedia.org/wiki/Anthracite

    An anthracite pile in Trevorton, Pennsylvania. Anthracite derives from the Greek anthrakítēs (ἀνθρακίτης), literally "coal-like". [9] Other terms which refer to anthracite are black coal, hard coal, stone coal, [10] [11] dark coal, coffee coal, blind coal (in Scotland), [7] Kilkenny coal (in Ireland), [10] crow coal or craw coal, and black diamond.

  3. Metallurgical coal - Wikipedia

    en.wikipedia.org/wiki/Metallurgical_coal

    Raw coke Eighteenth-century coke blast furnaces in Shropshire, England. Metallurgical coal or coking coal [1] is a grade of coal that can be used to produce good-quality coke. Coke is an essential fuel and reactant in the blast furnace process for primary steelmaking. [2] [3] [4] The demand for metallurgical coal is highly coupled to the demand ...

  4. Smokeless fuel - Wikipedia

    en.wikipedia.org/wiki/Smokeless_fuel

    Smokeless fuels generally have a high calorific value, with that of anthracite being greater than dry wood for example, and many smokeless briquettes are made from this type of coal. Thus anthracite has a calorific value of 32.5 MJ/kg compared with that of dry wood of about 21 MJ/kg.

  5. Coal analysis - Wikipedia

    en.wikipedia.org/wiki/Coal_analysis

    The simplest test to evaluate whether a coal is suitable for production of coke is the free swelling index test. This involves heating a small sample of coal in a standardised crucible to around 800 degrees Celsius (1500 °F). After heating for a specified time, or until all volatiles are driven off, a small coke button remains in the crucible.

  6. Coke (fuel) - Wikipedia

    en.wikipedia.org/wiki/Coke_(fuel)

    Raw coke. Coke is a grey, hard, and porous coal-based fuel with a high carbon content. It is made by heating coal or petroleum 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.

  7. Bituminous coal - Wikipedia

    en.wikipedia.org/wiki/Bituminous_coal

    Bituminous coal. Bituminous coal, or black coal, is a type of coal containing a tar-like substance called bitumen or asphalt. Its coloration can be black or sometimes dark brown; often there are well-defined bands of bright and dull material within the seams.

  8. Coking - Wikipedia

    en.wikipedia.org/wiki/Coking

    3 C 2 H 4 → 2 C ("coke") + 2 C 2 H 6. A more realistic but complex view involves the alkylation of an aromatic ring of a coke nucleus. Acidic catalysts are thus especially prone to coking because they are effective at generating carbocations (i.e., alkylating agents). [3] Coking is one of several mechanisms for the deactivation of a ...

  9. Petroleum coke - Wikipedia

    en.wikipedia.org/wiki/Petroleum_coke

    Needle coke, also called acicular coke, is a highly crystalline petroleum coke used in the production of electrodes for the steel and aluminium industries and is particularly valuable because the electrodes must be replaced regularly. Needle coke is produced exclusively from either fluid catalytic cracking (FCC) decant oil or coal tar pitch.

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