Definition of open-hearth process in English:

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open-hearth process

noun

A steel-making process in which scrap iron or steel, limestone, and pig iron are melted together in a shallow reverberatory furnace, the mixture being heated from above using gaseous fuel and air which oxidizes impurities in the iron.
Example sentences
  • The open-hearth process of steel-making allowed the operator a greater amount of control over materials used in the mills' heat than did the older Bessemer process.

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Line breaks: open-hearth pro|cess

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