Definition of open-hearth process in English:
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.
- 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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