System and method for producing metallic iron

Bleifuss, Rodney L; Englund, David J; Iwasaki, Iwao; Fosnacht, Donald R; Brandon, Mark M; True, Bradford G

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
B30 - presses
B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
B65 - conveying
B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
B99 - subject matter not otherwise provided for in this section
C - chemistry
C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
C04 - cements
C05 - fertilisers
C06 - explosives
C07 - organic chemistry
C08 - organic macromolecular compounds
C09 - dyes
C10 - petroleum, gas or coke industries
C11 - animal or vegetable oils, fats, fatty substances or waxes
C12 - biochemistry
C13 - sugar industry
C14 - skins
C21 - metallurgy of iron
C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
C40 - combinatorial technology
C99 - subject matter not otherwise provided for in this section
D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
D99 - subject matter not otherwise provided for in this section
E - fixed constructions
E01 - construction of roads, railways, or bridges
E02 - hydraulic engineering
E03 - water supply
E04 - building
E05 - locks
E06 - doors, windows, shutters, or roller blinds in general
E21 - earth drilling
E99 - subject matter not otherwise provided for in this section
F - mechanical engineering
F01 - machines or engines in general
F02 - combustion engines
F03 - machines or engines for liquids
F04 - positive - displacement machines for liquids
F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
F15 - fluid-pressure actuators
F16 - engineering elements and units
F17 - storing or distributing gases or liquids
F21 - lighting
F22 - steam generation
F23 - combustion apparatus
F24 - heating
F25 - refrigeration or cooling
F26 - drying
F27 - furnaces
F28 - heat exchange in general
F41 - weapons
F42 - ammunition
F99 - subject matter not otherwise provided for in this section
G - physics
G01 - measuring
G02 - optics
G03 - photography
G04 - horology
G05 - controlling
G06 - computing
G07 - checking-devices
G08 - signalling
G09 - education
G10 - musical instruments
G11 - information storage
G12 - instrument details
G16 - information and communication technology [ict] specially adapted for specific application fields
G21 - nuclear physics
G99 - subject matter not otherwise provided for in this section
H - electricity
H01 - basic electric elements
H02 - generation
H03 - basic electronic circuitry
H04 - electric communication technique
H05 - electric techniques not otherwise provided for
H99 - subject matter not otherwise provided for in this section
Y - new / cross sectional technologies
Y02 - technologies or applications for mitigation or adaptation against climate change
Y04 - information or communication technologies having an impact on other technology areas
Y10 - technical subjects covered by former uspc

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Title: System and method for producing metallic iron

Abstract

A hearth furnace for producing metallic iron material has a furnace housing having a drying/preheat zone, a conversion zone, a fusion zone, and optionally a cooling zone, the conversion zone is between the drying/preheat zone and the fusion zone. A moving hearth is positioned within the furnace housing. A hood or separation barrier within at least a portion of the conversion zone, fusion zone or both separates the fusion zone into an upper region and a lower region with the lower region adjacent the hearth and the upper region adjacent the lower region and spaced from the hearth. An injector introduces a gaseous reductant into the lower region adjacent the hearth. A combustion region may be formed above the hood or separation barrier.

Inventors:: Bleifuss, Rodney L; Englund, David J; Iwasaki, Iwao; Fosnacht, Donald R; Brandon, Mark M; True, Bradford G

Issue Date:: 2013-09-17

Research Org.:: Nu-Iron Technology, LLC (Charlotte, NC)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1093548

Patent Number(s):: 8535602

Application Number:: 13/351,742

Assignee:: Nu-Iron Technology, LLC (Charlotte, NC)

Patent Classifications (CPCs):: C - CHEMISTRY C21 - METALLURGY OF IRON C21B - MANUFACTURE OF IRON OR STEEL

C - CHEMISTRY C21 - METALLURGY OF IRON C21C - PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL

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C - CHEMISTRY C21 - METALLURGY OF IRON C21B - MANUFACTURE OF IRON OR STEEL
C21B13/0073 - {Selection or treatment of the reducing gases}
C21B13/10 - in hearth-type furnaces

C - CHEMISTRY C21 - METALLURGY OF IRON C21C - PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL
C21C2100/02 - Treatment of the exhaust gas
C21C5/567 - {operating in a continuous way}

C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
C22B1/212 - in tunnel furnaces
C22B1/245 - with carbonaceous material for the production of coked agglomerates
C22B5/10 - by solid carbonaceous reducing agents

F - MECHANICAL ENGINEERING F27 - FURNACES F27B - FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL
F27B9/045 - {Furnaces with controlled atmosphere}
F27B9/26 - on or in trucks, sleds, or containers
F27B9/3005 - {arrangements for circulating gases}
F27B9/36 - Arrangements of heating devices

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
Y02P10/134 - by CO2 avoidance

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DOE Contract Number:: FG36-05GO15185

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Bleifuss, Rodney L, Englund, David J, Iwasaki, Iwao, Fosnacht, Donald R, Brandon, Mark M, and True, Bradford G. System and method for producing metallic iron.  United States: N. p., 2013. 
        Web.

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                    Bleifuss, Rodney L, Englund, David J, Iwasaki, Iwao, Fosnacht, Donald R, Brandon, Mark M, & True, Bradford G. System and method for producing metallic iron.  United States.

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                    Bleifuss, Rodney L, Englund, David J, Iwasaki, Iwao, Fosnacht, Donald R, Brandon, Mark M, and True, Bradford G. Tue .  
        "System and method for producing metallic iron".  United States.  https://www.osti.gov/servlets/purl/1093548.

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@article{osti_1093548,

  title        = {System and method for producing metallic iron},

  author       = {Bleifuss, Rodney L and Englund, David J and Iwasaki, Iwao and Fosnacht, Donald R and Brandon, Mark M and True, Bradford G},

  abstractNote = {A hearth furnace for producing metallic iron material has a furnace housing having a drying/preheat zone, a conversion zone, a fusion zone, and optionally a cooling zone, the conversion zone is between the drying/preheat zone and the fusion zone. A moving hearth is positioned within the furnace housing. A hood or separation barrier within at least a portion of the conversion zone, fusion zone or both separates the fusion zone into an upper region and a lower region with the lower region adjacent the hearth and the upper region adjacent the lower region and spaced from the hearth. An injector introduces a gaseous reductant into the lower region adjacent the hearth. A combustion region may be formed above the hood or separation barrier.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2013},

  month        = {9}

}

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Works referenced in this record:

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patent, September 1994

Kenji, Takeuchi
US Patent Document 5,350,295
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Method of direct iron-making / steel-making via gas or coal-based direct reduction and apparatus
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Method and system for producing metallic iron nuggets
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Method of operating rotary hearth furnace for reducing oxides
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Method for producing beneficiated titanium oxides
patent, February 2004

Hoffman, Glenn E.; Gray, Ronald D.
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Method of producing reduced iron pellets
patent, November 2000

Kamijo, Tsunao; Miyagawa, Kazuya; Takenaka, Yoshimichi
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Method of producing a reduced metal, and traveling hearth furnace for producing same
patent, October 2000

Sawa, Yoshitaka; Yamamoto, Tetsuya; Takeda, Kanji
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Iron production method of operation in a rotary hearth furnace and improved furnace apparatus
patent, July 2002

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Method for achieving low sulfur levels in the DRI product from iron oxide reducing kilns
patent, March 1983

Baker, Alan C.; Keran, Vitie P.; Boulter, Geoffrey N.
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Rotary hearth furnace and method of operating the same
patent, October 2000

Takeda, Kanji; Sawa, Yoshitaka
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Method of producing direct reduced iron with use of coal-derived gas and apparatus
patent, July 2003

Shigehisa, Takuo; Tomuro, Jinichi; Makino, Eiichiro
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Rotary hearth furnace for reducing oxides, and method of operating the furnace
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Takeda, Kanji; Sawa, Yoshitaka; Yamamoto, Tetsuya
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Method and apparatus for reducing a feed material in a rotary hearth furnace
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Method and System for Producing Metallic Iron Nuggets
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System and Method of Producing Metallic Iron
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Meissner, David C.; Boyd, Thomas H.; Lepinski, James A.
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Similar Records

Title: System and method for producing metallic iron

Abstract

Citation Formats

Method for producing different kinds of heat-treated products patent, September 1994

Method of direct iron-making / steel-making via gas or coal-based direct reduction and apparatus patent, November 2003

Method and system for producing metallic iron nuggets patent, April 2010

Method of operating rotary hearth furnace for reducing oxides patent, July 2001

Treatment of iron oxide agglomerates before introduction into furnace patent, April 2001

Method for producing beneficiated titanium oxides patent, February 2004

Method of producing reduced iron pellets patent, November 2000

Method of producing a reduced metal, and traveling hearth furnace for producing same patent, October 2000

Iron production method of operation in a rotary hearth furnace and improved furnace apparatus patent, July 2002

Method for achieving low sulfur levels in the DRI product from iron oxide reducing kilns patent, March 1983

Rotary hearth furnace and method of operating the same patent, October 2000

Method of producing direct reduced iron with use of coal-derived gas and apparatus patent, July 2003

Rotary hearth furnace for reducing oxides, and method of operating the furnace patent, August 2001

Apparatus for rapid reduction of iron oxide in a rotary hearth furnace patent, March 1999

Method and apparatus for reducing a feed material in a rotary hearth furnace patent, May 2002

Paired straight hearth (PSH) furnaces for metal oxide reduction patent, July 2001

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

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Method of producing reduced iron agglomerates patent, October 2000

Method for rapid reduction of iron oxide in a rotary hearth furnace patent, March 1998

Processing method for high-temperature exhaust gas patent, February 2003

Method for producing different kinds of heat-treated products
patent, September 1994

Method of direct iron-making / steel-making via gas or coal-based direct reduction and apparatus
patent, November 2003

Method and system for producing metallic iron nuggets
patent, April 2010

Method of operating rotary hearth furnace for reducing oxides
patent, July 2001

Treatment of iron oxide agglomerates before introduction into furnace
patent, April 2001

Method for producing beneficiated titanium oxides
patent, February 2004

Method of producing reduced iron pellets
patent, November 2000

Method of producing a reduced metal, and traveling hearth furnace for producing same
patent, October 2000

Iron production method of operation in a rotary hearth furnace and improved furnace apparatus
patent, July 2002

Method for achieving low sulfur levels in the DRI product from iron oxide reducing kilns
patent, March 1983

Rotary hearth furnace and method of operating the same
patent, October 2000

Method of producing direct reduced iron with use of coal-derived gas and apparatus
patent, July 2003

Rotary hearth furnace for reducing oxides, and method of operating the furnace
patent, August 2001

Apparatus for rapid reduction of iron oxide in a rotary hearth furnace
patent, March 1999

Method and apparatus for reducing a feed material in a rotary hearth furnace
patent, May 2002

Paired straight hearth (PSH) furnaces for metal oxide reduction
patent, July 2001

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

Linear hearth furnace system and methods regarding same
patent, January 2011

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

Linear hearth furnace system and methods regarding same
patent, August 2008

Method of producing reduced iron agglomerates
patent, October 2000

Method for rapid reduction of iron oxide in a rotary hearth furnace
patent, March 1998

Processing method for high-temperature exhaust gas
patent, February 2003