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

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.
Inventors:
; ; ; ; ;
Issue Date:
OSTI Identifier:
1159972
Assignee:
Nu-Iron Technology, LLC (Charlotte, NC) GFO
Patent Number(s):
8,858,678
Application Number:
13/499,021
Contract Number:
FG36-05GO15185
Resource Relation:
Patent File Date: 2010 Sep 28
Research Org:
Nu-Iron Technology, LLC, Charlotte, NC (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Works referenced in this record:

Advances in CO2 capture technology—The U.S. Department of Energy's Carbon Sequestration Program
journal, January 2008
  • Figueroa, José D.; Fout, Timothy; Plasynski, Sean
  • International Journal of Greenhouse Gas Control, Vol. 2, Issue 1, p. 9-20
  • DOI: 10.1016/S1750-5836(07)00094-1

Impurity impacts on the purification process in oxy-fuel combustion based CO2 capture and storage system
journal, February 2009