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  2. Electric arc furnace - Wikipedia

    en.wikipedia.org/wiki/Electric_arc_furnace

    An electric arc furnace (EAF) is a furnace that heats material by means of an electric arc. Industrial arc furnaces range in size from small units of approximately one-tonne capacity (used in foundries for producing cast iron products) up to about 400-tonne units used for secondary steelmaking. Arc furnaces used in research laboratories and by ...

  3. Arc flash - Wikipedia

    en.wikipedia.org/wiki/Arc_flash

    An arc flash is the light and heat produced as part of an arc fault (sometimes referred to as an electrical flashover), a type of electrical explosion or discharge that results from a connection through air to ground or another voltage phase in an electrical system. Arc flash is distinctly different from the arc blast, which is the supersonic ...

  4. Paul Héroult - Wikipedia

    en.wikipedia.org/wiki/Paul_Héroult

    Halcomb installed the first Héroult furnace in the US. [1] The invention of the electric arc furnace probably began when Humphry Davy discovered the carbon arc in 1800. Then in 1878 Carl Wilhelm Siemens patented, constructed and operated both direct and indirect EAFs. Commercial use still needed to wait for larger supplies of electricity and ...

  5. A new rival bid for US Steel is emerging as the US extends ...

    www.aol.com/us-extends-deadline-nippons-bid...

    U.S. Steel has warned that, without Nippon Steel’s cash, it will shift production away from the blast furnaces to cheaper non-union electric arc furnaces and move its headquarters out of Pittsburgh.

  6. Metallurgical furnace - Wikipedia

    en.wikipedia.org/wiki/Metallurgical_furnace

    Electric arc furnaces (EAFs), which apply current to the metal via electrodes over an electric arc. The Flodin furnace is an early EAF, specially designed to smelt iron from ore through the direct addition of carbon; Electric induction furnaces, which heat the metal through eddy currents, requiring metal mostly free of gangue and corrosion

  7. Electric arc - Wikipedia

    en.wikipedia.org/wiki/Electric_arc

    An electric arc between two nails. An electric arc (or arc discharge) is an electrical breakdown of a gas that produces a prolonged electrical discharge. The current through a normally nonconductive medium such as air produces a plasma, which may produce visible light. An arc discharge is initiated either by thermionic emission or by field ...

  8. Rouge Steel - Wikipedia

    en.wikipedia.org/wiki/Rouge_Steel

    Recent major capital expenditures include a new, state-of-the-art Blast Furnace "C" that began operation in 2007 (followed shortly by an explosion and subsequent dismantling of Blast Furnace "B".) In 2011, Severstal Dearborn completed the construction of a continuous linked pickle line tandem cold mill (PLTCM) and a hot-dip galvanizing line (HDGL.)

  9. Scunthorpe Steelworks - Wikipedia

    en.wikipedia.org/wiki/Scunthorpe_Steelworks

    On 6 November 2023, British Steel announced the blast furnaces at Scunthorpe were to be decommissioned and replaced with two electric arc furnaces (EAFs). [100] Under the plans, one of the new furnaces would be located at Scunthorpe, and the other at Teesside. [100] The move is expected to cost £1.25 billion and result in the loss of up to ...