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Title: System and method for producing metallic iron

Abstract

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.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Nu-Iron Technology LLC, Charlotte, NC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1149932
Patent Number(s):
8790442
Application Number:
13/499,152
Assignee:
Nu-Iron Technology, LLC (Charlotte, NC)
Patent Classifications (CPCs):
C - CHEMISTRY C21 - METALLURGY OF IRON C21B - MANUFACTURE OF IRON OR STEEL
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
DOE Contract Number:  
FG36-05GO15185
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Englund, David J., Schlichting, Mark, Meehan, John, Crouch, Jeremiah, and Wilson, Logan. System and method for producing metallic iron. United States: N. p., 2014. Web.
Englund, David J., Schlichting, Mark, Meehan, John, Crouch, Jeremiah, & Wilson, Logan. System and method for producing metallic iron. United States.
Englund, David J., Schlichting, Mark, Meehan, John, Crouch, Jeremiah, and Wilson, Logan. Tue . "System and method for producing metallic iron". United States. https://www.osti.gov/servlets/purl/1149932.
@article{osti_1149932,
title = {System and method for producing metallic iron},
author = {Englund, David J. and Schlichting, Mark and Meehan, John and Crouch, Jeremiah and Wilson, Logan},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {7}
}

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Process for treating metal oxide fines
patent, February 1999


Process for treating iron bearing material
patent, February 1999


Direct reduction method and rotary hearth furnace
patent, November 1999


Facility for producing reduced iron
patent, January 2000


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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 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


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


The Evolution of Ironmaking Process Based on Coal-Containing Iron Ore Agglomerates.
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