METHOD FOR PRODUCING REDUCED IRON

PROBLEM TO BE SOLVED: To provide a method for producing reduced iron which can improve the heat-retaining property of a rotary hearth furnace at a low cost.SOLUTION: In the method for producing the reduced iron, combustible powder K is introduced into a rotary hearth type heating and reducing furnac...

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Bibliographic Details
Main Author YASO ITARU
Format Patent
LanguageEnglish
Published 13.12.2012
Subjects
CHEMISTRY
MANUFACTURE OF IRON OR STEEL
METALLURGY
METALLURGY OF IRON
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Summary:PROBLEM TO BE SOLVED: To provide a method for producing reduced iron which can improve the heat-retaining property of a rotary hearth furnace at a low cost.SOLUTION: In the method for producing the reduced iron, combustible powder K is introduced into a rotary hearth type heating and reducing furnace A and burnt, and a raw material mixture including a carboneceous reducing agent and an oxidized iron-containing material is heated and reduced to produce the reduced iron. The content of ash in the combustible powder is preferably ≤1.3 wt.%, and as the example of the combustible powder, a biomass or brown coal, etc., is cited.
Bibliography:Application Number: JP20110117296