Method for producing liquid pig iron or liquid steel intermediate products from fine-particled material containing iron oxide
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United States of America Patent
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Sep 13, 2011
Grant Date -
Apr 9, 2009
app pub date -
Apr 19, 2007
filing date -
Apr 28, 2006
priority date (Note) -
Expired
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Abstract
-containing reduction gas is generated and introduced into the final reduction stage, is converted there, is drawn off and introduced into at least one prereduction stage, converted there and drawn off. A first quantity fraction of the fine-particled material containing iron oxide is introduced into a melt-down gasification zone via at least one prereduction stage and one final reduction stage, and a further quantity fraction of the fine-particled material containing iron oxide is introduced into the melt-down gasification zone directly or together with the carbon carriers and the oxygen-containing gas.
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