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open-hearth process

a process of steelmaking in which the charge is laid in a furnace (open-hearth furnace) on a shallow hearth and heated directly by burning gas as well as radiatively by the furnace walls.
Origin of open-hearth process
First recorded in 1885-90 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for open-hearth furnace
Historical Examples
  • The terrific heat from the first nozzle caused the metal to glow under the torch as if in an open-hearth furnace.

    The Silent Bullet Arthur B. Reeve
  • The Bessemer “Converter” has, however, itself given place to the Siemens open-hearth furnace.

    Sixty Years a Queen

    Sir Herbert Maxwell
  • You know the cinder pits are located in the open-hearth furnace building.

British Dictionary definitions for open-hearth furnace

open-hearth furnace

(esp formerly) a steel-making reverbatory furnace in which pig iron and scrap are contained in a shallow hearth and heated by producer gas

open-hearth process

a process for making steel using an open-hearth furnace
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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