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Title: System and method for producing metallic iron

Patent ·
OSTI ID:1149932
; ; ; ;

A method of production of metallic iron nodules comprises assembling a hearth furnace having a moveable hearth comprising refractory material and having a conversion zone and a fusion zone, providing a hearth material layer comprising carbonaceous material on the refractory material, providing a layer of reducible material comprising and iron bearing material arranged in discrete portions over at least a portion of the hearth material layer, delivering oxygen gas into the hearth furnace to a ratio of at least 0.8:1 ponds of oxygen to pounds of iron in the reducible material to heat the conversion zone to a temperature sufficient to at least partially reduce the reducible material and to heat the fusion zone to a temperature sufficient to at least partially reduce the reducible material, and heating the reducible material to form one or more metallic iron nodules and slag.

Research Organization:
Nu-Iron Technology LLC, Charlotte, NC (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FG36-05GO15185
Assignee:
Nu-Iron Technology, LLC (Charlotte, NC)
Patent Number(s):
8,790,442
Application Number:
13/499,152
OSTI ID:
1149932
Country of Publication:
United States
Language:
English

References (30)

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Process for treating metal oxide fines patent August 2001
Method and facility for producing reduced iron patent September 2001
Apparatus and method for producing reduced metal patent April 2002
Method and apparatus removing undesirable metals from iron-containing materials patent April 2002
Method and apparatus for reducing a feed material in a rotary hearth furnace patent May 2002
Method for combustion treatment of combustible waste and apparatus therefor patent April 2006
Method for manufacturing reduced metal patent August 2009
System and method for producing metallic iron nodules patent September 2011
Method for manufacturing reduced metal patent-application August 2004
High Temperature Electrolysis For Syngas Production patent-application January 2008
System and Method for Producing Metallic Iron patent-application June 2009
Rotary Hearth Furnace And Method Of Operating The Same patent-application June 2009
Method and System for Producing Metallic Iron Nuggets patent-application July 2009
System and Method for Producing Metallic Iron patent-application September 2009
System and Method of Producing Metallic Iron patent-application February 2010
System and Method for Producing Metallic Iron Nodules patent-application May 2010
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Impurity impacts on the purification process in oxy-fuel combustion based CO2 capture and storage system journal February 2009
Simultaneous easy CO2 recovery and drastic reduction of SOx and NOx in O2/CO2 coal combustion with heat recirculation⋆ journal July 2003
The Evolution of Ironmaking Process Based on Coal-Containing Iron Ore Agglomerates. journal January 2001

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