open-hearth process

noun
  1. 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for open-hearth furnace

open-hearth furnace

noun
  1. (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

noun
  1. a process for making steel using an open-hearth furnace
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