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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
1885-90 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for open hearth process
Historical Examples
  • Steel making by the open hearth process is chiefly due to the late Sir William Siemens.

    Inventors at Work George Iles
  • In that period the open hearth process has been substituted on a vast scale for the Bessemer process.

British Dictionary definitions for open hearth process

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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