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System and method for making metallic iron with reduced CO.sub.2 emissions

Patent ·
OSTI ID:1159972
; ; ; ; ;
A method and system for making metallic iron nodules with reduced CO.sub.2 emissions is disclosed. The method includes: assembling a linear hearth furnace having entry and exit portions, at least a conversion zone and a fusion zone, and a moving hearth adapted to move reducible iron bearing material through the furnace on contiguous hearth sections; assembling a shrouded return substantially free of air ingress extending adjacent at least the conversion and fusion zones of the furnace through which hearth sections can move from adjacent the exit portion to adjacent the entry portion of the furnace; transferring the hearth sections from the furnace to the shrouded return adjacent the exit portion; reducing reducible material in the linear hearth furnace to metallic iron nodules; and transporting gases from at least the fusion zone to the shrouded return to heat the hearth sections while in the shrouded return.
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):
8,858,678
Application Number:
13/499,021
OSTI ID:
1159972
Country of Publication:
United States
Language:
English

References (3)

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