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open-hearth furnace
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open-hearth furnace

Method of steelmaking, now largely superseded by the basic–oxygen process. It was developed in 1864 in England by German-born William and Friedrich Siemens, and improved by Pierre and Emile Martin in France in the same year. In the furnace, which has a wide, saucer-shaped hearth and a low roof, molten pig iron and scrap are packed into the shallow hearth and heated by overhead gas burners using preheated air.
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BRITISH STEEL ARCHIVE Bill Parry wrote: The workers feeding the furnaces remind me of the open hearth furnaces at Grangetown, which I helped demolish in the Sixties with a firm called Road Materials.
Team of the week; Remember When by Evening Gazette (Middlesbrough, England)
Where blast furnaces are used to reduce iron ore into pig iron, various kinds of steelmaking furnaces are made for a multitude of other purposes: Puddling furnace, reverberatory furnace, Bessemer converter, open hearth furnace, basic oxygen furnace, electric arc furnace, electric induction furnace.
There's More Types of Furnaces than the One in Your House by Herbert Sanchez / Home based business community
from 1961 to 1986, says the auto bundles were a low grade of scrap, but that open hearth furnace operators would still consume the bundles if they could be diluted in a large melt.
A better idea: the decline in quality of number two auto bundles ... by Taylor, Brian / Recycling Today
 
 
 
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