Method for producing metallic iron
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United States of America Patent
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Mar 9, 2010
Grant Date -
Feb 5, 2009
app pub date -
Jul 31, 2008
filing date -
Jul 12, 2001
priority date (Note) -
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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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