Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 9, 2010
Patent Application Number
12183947
Date Filed
July 31, 2008
Patent Primary Examiner
Patent abstract
A hearth material is laid in the form of a layer on the hearth prior to supply of a mixture containing a carbonaceous reducing agent and iron oxides onto a hearth of a reduction melting furnace, thereby forming a renewable hearth capable of being renewed, and the metallic iron is produced while renewing a part or the whole of the renewable hearth, which has deteriorated during operation, with the hearth material.
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