WO2000034531A1 - Appareil de reduction de minerai de fer fin de type a lit fluidise et procede afferent - Google Patents

Appareil de reduction de minerai de fer fin de type a lit fluidise et procede afferent Download PDF

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Publication number
WO2000034531A1
WO2000034531A1 PCT/KR1999/000729 KR9900729W WO0034531A1 WO 2000034531 A1 WO2000034531 A1 WO 2000034531A1 KR 9900729 W KR9900729 W KR 9900729W WO 0034531 A1 WO0034531 A1 WO 0034531A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluidized bed
bed type
type furnace
iron ore
gas
Prior art date
Application number
PCT/KR1999/000729
Other languages
English (en)
Inventor
Nag-Joon Choi
Heung-Won Kang
Uoo-Chang Chung
Hang-Goo Kim
Sun-Kwang Jeong
Original Assignee
Pohang Iron & Steel Co., Ltd.
Research Institute Of Industrial Science & Technology
Voest-Alpine Industrieanlagenbau Gmbh
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 Pohang Iron & Steel Co., Ltd., Research Institute Of Industrial Science & Technology, Voest-Alpine Industrieanlagenbau Gmbh filed Critical Pohang Iron & Steel Co., Ltd.
Priority to AU15132/00A priority Critical patent/AU1513200A/en
Priority to CA 2320242 priority patent/CA2320242A1/fr
Priority to JP2000586963A priority patent/JP2002531705A/ja
Priority to EP19990957428 priority patent/EP1055006A1/fr
Priority to BR9907794A priority patent/BR9907794A/pt
Publication of WO2000034531A1 publication Critical patent/WO2000034531A1/fr

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
    • C21B13/0006—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
    • C21B11/00—Making pig-iron other than in blast furnaces
    • C21B11/02—Making pig-iron other than in blast furnaces in low shaft furnaces or shaft 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
    • C21B13/0033—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
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • 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
    • C21B2100/40—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
    • 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
    • Y02P10/20—Recycling

Definitions

  • a third gas distributor 232 Within the lower portion of the narrow portion 230c, there is installed a third gas distributor 232. Further, a third reducing gas supplying pipe 272 is connected to the bottom of the third fluidized bed type furnace 230, for supplying a reducing gas .
  • the gas flow velocity within the third fine particle fluidized bed type furnace 230 should be preferably 1.2 - 2.0 times as fast as the minimum fluidizing velocity of the iron ore particles which stay within the furnace.
  • the first-reduced intermediate/coarse iron ore ores which have not been flown away at the first fluidized bed type furnace 310 are supplied to the second fluidized bed type furnace 320 so as to be finally reduced.
  • oxygen is injected to adjust the temperature of the second fluidized bed type furnace 320.
  • FIGs. 2, 3 and 4 illustrate two-stage fluidized bed type reducing apparatuses, but the present invention is not limited to the two-stage apparatus, but can cover a three-stage apparatus and multi-stage apparatuses.
  • the fine iron ore particles and the intermediate/coarse iron ore particles are separately reduced, and therefore, the fine particle treating loads of the cyclones are alleviated, thereby improving the fine particle removing capabilities. Therefore, a fine iron ore having a wide particle size distribution can be reduced more efficiently with a less elutriation loss.

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)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Abstract

L'invention concerne un appareil de réduction de type à lit fluidisé destiné à la réduction de minerai fin à large dimension des particules, l'appareil comprenant un premier (210) four de type à lit fluidisé destiné à une première réduction de minerais de fer grossiers/intermédiaires uniquement et un deuxième (220) four de type à lit fluidisé destiné à la réduction des minerais de fer du premier (210) four de type à lit fluidisé. Un premier cyclone (240) capture les particules fines de minerai de fer provenant du gaz d'évacuation du premier (210) four de type à lit fluidisé et un deuxième cyclone (250) capture celles provenant du gaz d'évacuation du deuxième (220) four de type à lit fluidisé. Dans un troisième (230) four de type à lit fluidisé, les particules fines de minerai de fer capturées par les premier et deuxième cyclones (240, 250) sont réduites. Un troisième cyclone (260) capture les particules de minerai de fer très fines évacuées du troisième (230) four de type à lit fluidisé pour les recycler dans le troisième (230) four de type à lit fluidisé.
PCT/KR1999/000729 1998-12-09 1999-12-03 Appareil de reduction de minerai de fer fin de type a lit fluidise et procede afferent WO2000034531A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU15132/00A AU1513200A (en) 1998-12-09 1999-12-03 Fluidized bed type fine iron ore reducing apparatus, and method therefor
CA 2320242 CA2320242A1 (fr) 1998-12-09 1999-12-03 Appareil de reduction de minerai de fer fin de type a lit fluidise et procede afferent
JP2000586963A JP2002531705A (ja) 1998-12-09 1999-12-03 流動層型微粉鉄鉱石還元装置、及びそのための方法
EP19990957428 EP1055006A1 (fr) 1998-12-09 1999-12-03 Appareil de reduction de minerai de fer fin de type a lit fluidise et procede afferent
BR9907794A BR9907794A (pt) 1998-12-09 1999-12-03 Aparelho redutor de minério de ferro fino do tipo de leito fluidizado, e método para o mesmo

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1998/53955 1998-12-09
KR1019980053955A KR100321050B1 (ko) 1998-12-09 1998-12-09 분철광석의유동층식예비환원장치및이를이용한예비환원방법

Publications (1)

Publication Number Publication Date
WO2000034531A1 true WO2000034531A1 (fr) 2000-06-15

Family

ID=19562041

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR1999/000729 WO2000034531A1 (fr) 1998-12-09 1999-12-03 Appareil de reduction de minerai de fer fin de type a lit fluidise et procede afferent

Country Status (8)

Country Link
EP (1) EP1055006A1 (fr)
JP (1) JP2002531705A (fr)
KR (1) KR100321050B1 (fr)
AU (1) AU1513200A (fr)
BR (1) BR9907794A (fr)
CA (1) CA2320242A1 (fr)
WO (1) WO2000034531A1 (fr)
ZA (1) ZA200004742B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004501283A (ja) * 2000-06-28 2004-01-15 ヴォエスト・アルピーネ・インデュストリーアンラーゲンバウ・ゲーエムベーハー・ウント・コ 粒子状酸素含有鉱石の間接還元方法及び装置
EP1576198A1 (fr) * 2002-12-23 2005-09-21 Posco Appareil de fabrication de fers fondus pour l'amelioration du fonctionnement d'un appareil de reduction de type a lit fluidise et procede de fabrication associe
EP1576197A1 (fr) * 2002-12-23 2005-09-21 Posco Appareil de fabrication de fontes liquides permettant de secher et d'acheminer des minerais de fer et des additifs et procede de fabrication faisant appel a ce dernier
US8968693B2 (en) 2012-08-30 2015-03-03 Honeywell International Inc. Internal cyclone for fluidized bed reactor
WO2024111758A1 (fr) * 2022-11-22 2024-05-30 주식회사 포스코 Four de réduction et procédé de production de fer réduit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102153185B1 (ko) * 2018-11-28 2020-09-07 주식회사 포스코 리튬함유 광석으로부터 황산리튬용액을 제조하는 방법 및 장치

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996021045A1 (fr) * 1994-12-31 1996-07-11 Pohang Iron & Steel Co., Ltd. Appareil de reduction de type lit fluidise pour particules de minerai de fer et procede de reduction des particules de minerai de fer a l'aide de l'appareil
WO1997024463A1 (fr) * 1995-12-29 1997-07-10 Pohang Iron & Steel Co., Ltd. Dispositif du type triple four a lit fluidise destine a la reduction de minerai de fer fin

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996021045A1 (fr) * 1994-12-31 1996-07-11 Pohang Iron & Steel Co., Ltd. Appareil de reduction de type lit fluidise pour particules de minerai de fer et procede de reduction des particules de minerai de fer a l'aide de l'appareil
WO1997024463A1 (fr) * 1995-12-29 1997-07-10 Pohang Iron & Steel Co., Ltd. Dispositif du type triple four a lit fluidise destine a la reduction de minerai de fer fin

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004501283A (ja) * 2000-06-28 2004-01-15 ヴォエスト・アルピーネ・インデュストリーアンラーゲンバウ・ゲーエムベーハー・ウント・コ 粒子状酸素含有鉱石の間接還元方法及び装置
EP1576198A1 (fr) * 2002-12-23 2005-09-21 Posco Appareil de fabrication de fers fondus pour l'amelioration du fonctionnement d'un appareil de reduction de type a lit fluidise et procede de fabrication associe
EP1576197A1 (fr) * 2002-12-23 2005-09-21 Posco Appareil de fabrication de fontes liquides permettant de secher et d'acheminer des minerais de fer et des additifs et procede de fabrication faisant appel a ce dernier
EP1576198A4 (fr) * 2002-12-23 2006-09-20 Posco Appareil de fabrication de fers fondus pour l'amelioration du fonctionnement d'un appareil de reduction de type a lit fluidise et procede de fabrication associe
US7588625B2 (en) 2002-12-23 2009-09-15 Posco Apparatus for manufacturing molten irons to dry and convey iron ores and additives and manufacturing method using the same
US7713329B2 (en) 2002-12-23 2010-05-11 Posco Apparatus for manufacturing molten irons to improve operation of fluidized bed type reduction apparatus and manufacturing method using the same
EP1576197A4 (fr) * 2002-12-23 2010-11-17 Posco Appareil de fabrication de fontes liquides permettant de secher et d'acheminer des minerais de fer et des additifs et procede de fabrication faisant appel a ce dernier
US8968693B2 (en) 2012-08-30 2015-03-03 Honeywell International Inc. Internal cyclone for fluidized bed reactor
WO2024111758A1 (fr) * 2022-11-22 2024-05-30 주식회사 포스코 Four de réduction et procédé de production de fer réduit

Also Published As

Publication number Publication date
KR100321050B1 (ko) 2002-04-17
EP1055006A1 (fr) 2000-11-29
AU1513200A (en) 2000-06-26
JP2002531705A (ja) 2002-09-24
KR20000038827A (ko) 2000-07-05
CA2320242A1 (fr) 2000-06-15
BR9907794A (pt) 2000-10-24
ZA200004742B (en) 2001-03-15

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