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WO2009082123A3 - Apparatus for manufacturing molten iron and method for manufacturing the same - Google Patents

Apparatus for manufacturing molten iron and method for manufacturing the same Download PDF

Info

Publication number
WO2009082123A3
WO2009082123A3 PCT/KR2008/007490 KR2008007490W WO2009082123A3 WO 2009082123 A3 WO2009082123 A3 WO 2009082123A3 KR 2008007490 W KR2008007490 W KR 2008007490W WO 2009082123 A3 WO2009082123 A3 WO 2009082123A3
Authority
WO
WIPO (PCT)
Prior art keywords
manufacturing
molten iron
reduction reactor
offgas
iron
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2008/007490
Other languages
French (fr)
Other versions
WO2009082123A2 (en
Inventor
Ki-Hyun Kim
Si-Hyung Lee
Sung-Man Kim
Hoo-Geun Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Posco Holdings Inc
Original Assignee
Posco Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Posco Co Ltd filed Critical Posco Co Ltd
Priority to BRPI0822071A priority Critical patent/BRPI0822071B8/en
Priority to CN2008801232723A priority patent/CN101910423B/en
Publication of WO2009082123A2 publication Critical patent/WO2009082123A2/en
Publication of WO2009082123A3 publication Critical patent/WO2009082123A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
    • C21B13/0013—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide into a bath of molten iron containing a carbon reductant
    • C21B13/002—Reduction of iron ores by passing through a heated column of carbon
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0033—In fluidised bed furnaces or apparatus containing a dispersion of the material
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0073—Selection or treatment of the reducing gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/22—Increasing the gas reduction potential of recycled exhaust gases by reforming
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/28—Increasing the gas reduction potential of recycled exhaust gases by separation
    • C21B2100/282—Increasing the gas reduction potential of recycled exhaust gases by separation of carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/28—Increasing the gas reduction potential of recycled exhaust gases by separation
    • C21B2100/284—Increasing the gas reduction potential of recycled exhaust gases by separation of nitrogen
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacture Of Iron (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

The present invention relates to an apparatus for manufacturing molten iron and a method of manufacturing the molten iron. The apparatus for manufacturing molten iron includes at least one reduction reactor, a melter-gasifier, an offgas supply line, and at least one reformer. The at least one reduction reactor reduces iron ore to form reduced iron. The melter-gasifier is connected to the reduction reactor. The reduced iron, a lumped carbonaceous material, and oxygen are provided to the melter-gasifier to form molten iron. The offgas supply line circulates an offgas discharged from the reduction reactor to the reduction reactor. The at least one reformer is installed at the offgas supply line to raise the amount of hydrogen included in the offgas.
PCT/KR2008/007490 2007-12-26 2008-12-17 Apparatus for manufacturing molten iron and method for manufacturing the same Ceased WO2009082123A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BRPI0822071A BRPI0822071B8 (en) 2007-12-26 2008-12-17 equipment and method of manufacture of cast iron.
CN2008801232723A CN101910423B (en) 2007-12-26 2008-12-17 Apparatus for manufacturing molten iron and method for manufacturing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2007-0137303 2007-12-26
KR1020070137303A KR100930680B1 (en) 2007-12-26 2007-12-26 Molten iron manufacturing equipment and molten iron manufacturing method

Publications (2)

Publication Number Publication Date
WO2009082123A2 WO2009082123A2 (en) 2009-07-02
WO2009082123A3 true WO2009082123A3 (en) 2009-09-17

Family

ID=40801666

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/007490 Ceased WO2009082123A2 (en) 2007-12-26 2008-12-17 Apparatus for manufacturing molten iron and method for manufacturing the same

Country Status (4)

Country Link
KR (1) KR100930680B1 (en)
CN (1) CN101910423B (en)
BR (1) BRPI0822071B8 (en)
WO (1) WO2009082123A2 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT509735B1 (en) * 2010-05-11 2012-03-15 Siemens Vai Metals Tech Gmbh METHOD AND DEVICE FOR PRODUCING AT LEAST PARTIALLY REDUCED METAL ORCES AND / OR METALS
KR101249050B1 (en) * 2010-12-22 2013-03-29 주식회사 포스코 Method for manufacturing reducing gas from finex off gas
KR20130072684A (en) * 2011-12-22 2013-07-02 주식회사 포스코 Tuyere assembly for injecting oxygen and pulverized coal into furnace and apparatus for manufacturing molten iron using the same
KR101353456B1 (en) 2011-12-28 2014-01-21 주식회사 포스코 Apparatus for reducing iron ores and apparataus for manufacturing molten iron and reduced iron and method for manufacturing the same
KR101384804B1 (en) * 2012-04-19 2014-04-14 주식회사 포스코 Apparatus for manufacturing molten irons using the exhausted gas and method thereof
KR101321928B1 (en) * 2012-05-16 2013-10-28 주식회사 포스코 Molten iron manufacturing apparatus and molten iron manufacturing method using the same
KR101321930B1 (en) * 2012-06-07 2013-10-28 주식회사 포스코 Manufacturing apparatus for reduced iron and manufacturing method thereof using the same
KR101384802B1 (en) * 2012-12-27 2014-04-14 주식회사 포스코 Apparatus for manufacturing molten iron and method for manufacturing thereof
KR101384800B1 (en) * 2012-12-27 2014-04-14 주식회사 포스코 Apparatus for manufacturing molten iron and method for manufacturing thereof
KR101461803B1 (en) * 2013-05-21 2014-11-13 주식회사 포스코 Graphene manufacturing method and manufacturing appratus
CN104831070B (en) * 2015-05-12 2017-01-18 郭民 Smelting reduction metallurgical method
WO2017075686A1 (en) * 2015-11-03 2017-05-11 Responsible Energy Inc. System and apparatus for processing material to generate syngas in a modular architecture
KR101795467B1 (en) * 2016-12-05 2017-11-10 주식회사 포스코 Apparatus for manufacturing pig iron and method therefor
KR101998733B1 (en) * 2016-12-22 2019-07-10 주식회사 포스코 Apparatus for manufacturing molten iron and method for manufacturing thereof
KR102104555B1 (en) * 2018-08-02 2020-05-29 주식회사 포스코 Apparatus for reducing emission of carbon dioxide, method for reducing emission of carbon dioxide and manufacturing apparatus of molten iron
KR102255105B1 (en) * 2018-12-13 2021-05-24 주식회사 포스코 Apparatus for recycling ahs of reduction furnace
KR102231655B1 (en) * 2018-12-18 2021-03-23 주식회사 포스코 Manufacturing apparatus of molten iron and manufacturing method of molten iron
KR102328389B1 (en) * 2019-12-04 2021-11-18 주식회사 포스코 Apparatus for manufacturing molten irons and method for manufacturing the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11140529A (en) * 1997-11-14 1999-05-25 Nkk Corp Arc furnace operation method
KR20010041141A (en) * 1998-02-20 2001-05-15 조세 드라 루쯔 마누엘 데노리오 Method and apparatus for producing direct reduced iron with improved reducing gas utilization
KR20030013057A (en) * 2001-08-06 2003-02-14 재단법인 포항산업과학연구원 Ironmaking process for using sludge drying by off gas of fluidized bed for iron reduction
KR20050054849A (en) * 2003-12-05 2005-06-10 주식회사 포스코 An apparatus for manufacturing a molten iron directly using fine or lump coals and fine iron ores, the method thereof, the integrated steel mill using the same and the method thereof
KR20050089836A (en) * 2002-12-23 2005-09-08 주식회사 포스코 An apparatus for manufacturing molten irons to improve operation of fludizied bed type reduction apparatus and manufacturing method using the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020051308A (en) * 2000-12-22 2002-06-29 이구택 Method For Producing Molten Iron And Iron Carbide
CN1852995A (en) * 2003-12-05 2006-10-25 Posco公司 Equipment and method for producing molten iron by directly using pulverized coal or lump coal and iron powder ore, combined steel factory and method using them

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11140529A (en) * 1997-11-14 1999-05-25 Nkk Corp Arc furnace operation method
KR20010041141A (en) * 1998-02-20 2001-05-15 조세 드라 루쯔 마누엘 데노리오 Method and apparatus for producing direct reduced iron with improved reducing gas utilization
KR20030013057A (en) * 2001-08-06 2003-02-14 재단법인 포항산업과학연구원 Ironmaking process for using sludge drying by off gas of fluidized bed for iron reduction
KR20050089836A (en) * 2002-12-23 2005-09-08 주식회사 포스코 An apparatus for manufacturing molten irons to improve operation of fludizied bed type reduction apparatus and manufacturing method using the same
KR20050054849A (en) * 2003-12-05 2005-06-10 주식회사 포스코 An apparatus for manufacturing a molten iron directly using fine or lump coals and fine iron ores, the method thereof, the integrated steel mill using the same and the method thereof

Also Published As

Publication number Publication date
BRPI0822071A2 (en) 2015-06-23
KR100930680B1 (en) 2009-12-09
KR20090069591A (en) 2009-07-01
CN101910423B (en) 2013-06-12
WO2009082123A2 (en) 2009-07-02
CN101910423A (en) 2010-12-08
BRPI0822071B8 (en) 2017-11-07
BRPI0822071B1 (en) 2017-06-13

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