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Definition of open-hearth


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open-hearth
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open-hearth
A. gas and air enter
B. pre-heated chamber
C. molten pig iron
D. hearth
E. heating chamber (cold)
F. gas and air exit
o·pen-hearth   (pn-härth) KEY  

ADJECTIVE:
  1. Designating or being a reverberatory furnace used in the production of high-quality steel.
  2. Of or relating to the steel produced in such a furnace.



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The American Heritage® Dictionary of the English Language, Fourth Edition.
Copyright © 2000 by Houghton Mifflin Company.
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