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

Abstract

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:
Research Org.:
Nu-Iron Technology, LLC, Charlotte, NC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1159972
Patent Number(s):
8858678
Application Number:
13/499,021
Assignee:
Nu-Iron Technology, LLC (Charlotte, NC)
Patent Classifications (CPCs):
C - CHEMISTRY C21 - METALLURGY OF IRON C21B - MANUFACTURE OF IRON OR STEEL
F - MECHANICAL ENGINEERING F27 - FURNACES F27B - FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL
DOE Contract Number:  
FG36-05GO15185
Resource Type:
Patent
Resource Relation:
Patent File Date: 2010 Sep 28
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Kiesel, Richard F, Englund, David J, Schlichting, Mark, Meehan, John, Crouch, Jeremiah, and Wilson, Logan. System and method for making metallic iron with reduced CO.sub.2 emissions. United States: N. p., 2014. Web.
Kiesel, Richard F, Englund, David J, Schlichting, Mark, Meehan, John, Crouch, Jeremiah, & Wilson, Logan. System and method for making metallic iron with reduced CO.sub.2 emissions. United States.
Kiesel, Richard F, Englund, David J, Schlichting, Mark, Meehan, John, Crouch, Jeremiah, and Wilson, Logan. Tue . "System and method for making metallic iron with reduced CO.sub.2 emissions". United States. https://www.osti.gov/servlets/purl/1159972.
@article{osti_1159972,
title = {System and method for making metallic iron with reduced CO.sub.2 emissions},
author = {Kiesel, Richard F and Englund, David J and Schlichting, Mark and Meehan, John and Crouch, Jeremiah and Wilson, Logan},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {10}
}

Works referenced in this record:

High Temperature Electrolysis For Syngas Production
patent-application, January 2008


System and Method for Producing Metallic Iron
patent-application, June 2009


Method and System for Producing Metallic Iron Nuggets
patent-application, July 2009


System and Method of Producing Metallic Iron
patent-application, February 2010


System and Method for Producing Metallic Iron Nodules
patent-application, May 2010


Advances in CO2 capture technology—The U.S. Department of Energy's Carbon Sequestration Program
journal, January 2008