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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 (4)

The Evolution of Ironmaking Process Based on Coal-Containing Iron Ore Agglomerates. journal January 2001
Advances in CO2 capture technology—The U.S. Department of Energy's Carbon Sequestration Program journal January 2008
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

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Related Subjects

36 MATERIALS SCIENCE