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  2. Metallurgical furnace - Wikipedia

    en.wikipedia.org/wiki/Metallurgical_furnace

    A metallurgical furnace, often simply referred to as a furnace when the context is known, is an industrial furnace used to heat, melt, or otherwise process metals. Furnaces have been a central piece of equipment throughout the history of metallurgy ; processing metals with heat is even its own engineering specialty known as pyrometallurgy .

  3. Crucible Industries - Wikipedia

    en.wikipedia.org/wiki/Crucible_Industries

    Crucible Industries, commonly known as Crucible, is an American company which develops and manufactures specialty steels, and is the sole producer of a line of sintered steels known as Crucible Particle Metallurgy (CPM) steels.

  4. Nucor - Wikipedia

    en.wikipedia.org/wiki/Nucor

    Molten steel transferred from furnace to ladle. Nucor Corporation is an American company based in Charlotte, North Carolina, that produces steel and related products. It is the largest steel producer in the United States and the largest recycler of scrap in North America. [1]

  5. Open-hearth furnace - Wikipedia

    en.wikipedia.org/wiki/Open-hearth_furnace

    Open hearth furnace workers at the Zaporizhstal steel mill in Ukraine taking a steel sample, c. 2012 Tapping open-hearth furnace, VEB Rohrkombinat Riesa, East Germany, 1982. An open-hearth furnace or open hearth furnace is any of several kinds of industrial furnace in which excess carbon and other impurities are burnt out of pig iron to produce ...

  6. Direct reduction - Wikipedia

    en.wikipedia.org/wiki/Direct_reduction

    The cupola furnace is ideally suited to this task, but since one reason for the existence of direct reduction processes is the non-use of coke, other melting furnaces have emerged. The COREX process , in operation since 1987, consists of a direct-reduction shaft reactor feeding a blast furnace crucible, in which the pre-reduced ore is brought ...

  7. Steelmaking - Wikipedia

    en.wikipedia.org/wiki/Steelmaking

    Steel mill with two arc furnaces. Steelmaking is the process of producing steel from iron ore and/or scrap. Steel has been made for millennia, and was commercialized on a massive scale in the 1850s and 1860s, using the Bessemer and Siemens-Martin processes. Two major commercial processes are used.

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  9. Round Oak Steelworks - Wikipedia

    en.wikipedia.org/wiki/Round_Oak_Steelworks

    In 1927, it was reported that the equipment at the plant included a 90-ton tilting furnace, two 50-ton and three 40-ton fixed open-hearth furnaces, in addition to a 30-inch cogging mill and a 28-inch finishing mill. [9] The company's name was changed to Round Oak Steel Works Limited on 14 December 1936. [10]