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BR9907794A - Fluidized bed thin iron ore reducing apparatus, and method for it - Google Patents

Fluidized bed thin iron ore reducing apparatus, and method for it

Info

Publication number
BR9907794A
BR9907794A BR9907794A BR9907794A BR9907794A BR 9907794 A BR9907794 A BR 9907794A BR 9907794 A BR9907794 A BR 9907794A BR 9907794 A BR9907794 A BR 9907794A BR 9907794 A BR9907794 A BR 9907794A
Authority
BR
Brazil
Prior art keywords
fluidized bed
iron ore
bed type
oven
cyclone
Prior art date
Application number
BR9907794A
Other languages
Portuguese (pt)
Inventor
Nag-Joon Choi
Hang-Goo Kim
Heung-Won Kang
Uoo-Chang Chung
Sun-Kwang Jeong
Original Assignee
Po Hang Iron & Steel
Res Inst Ind Science & Tech
Voest Alpine Ind Anlagen
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 Po Hang Iron & Steel, Res Inst Ind Science & Tech, Voest Alpine Ind Anlagen filed Critical Po Hang Iron & Steel
Publication of BR9907794A publication Critical patent/BR9907794A/en

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

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

Patente de Invenção: <B>"APARELHO REDUTOR DE MINéRIO DE FERRO FINO DO TIPO DE LEITO FLUIDIZADO, E MéTODO PARA O MESMO"<D>. Um aparelho redutor do tipo de leito fluidizado para reduzir um minério de ferro fino com uma distribuição de tamanho de partículas grande inclui um primeiro forno do tipo de leito fluidizado (210) para uma primeira redução apenas de minérios de ferro graúdos/intermediários, e um segundo forno do tipo de leito fluidizado (220) para a redução dos minérios de ferro do primeiro forno do tipo de leito fluidizado (210). Um primeiro ciclone (240) captura partículas de minério de ferro finas a partir do gás de descarga do referido primeiro forno do tipo de leito fluidizado (210), e um segundo ciclone (250) captura aquelas provenientes do segundo forno do tipo de leito fluidizado (220). Em um terceiro forno do tipo de leito fluidizado (230) as partículas de minério de ferro finas que foram capturadas pelo primeiro e segundo ciclones (240 e 250) são reduzidas. Um terceiro ciclone (260) captura as partículas de minério de ferro extremamente finas descarregadas do terceiro forno do tipo de leito fluidizado (230) para serem recicladas para o terceiro forno do tipo de leito fluidizado (230).Invention Patent: <B> "FUEL IRON ORE REDUCING APPLIANCE OF THE FLUIDIZED BED TYPE, AND METHOD FOR THE SAME" <D>. A fluidized bed type reducing apparatus for reducing a fine iron ore with a large particle size distribution includes a first fluidized bed type furnace (210) for a first reduction only of coarse / intermediate iron ores, and a second fluidized bed oven (220) for the reduction of iron ores of the first fluidized bed type oven (210). A first cyclone (240) captures fine iron ore particles from the discharge gas from said first fluidized bed type furnace (210), and a second cyclone (250) captures those from the second fluidized bed type furnace. (220). In a third fluidized bed oven (230) the fine iron ore particles that were captured by the first and second cyclones (240 and 250) are reduced. A third cyclone (260) captures the extremely fine iron ore particles discharged from the third fluid bed type oven (230) to be recycled to the third fluid bed type oven (230).

BR9907794A 1998-12-09 1999-12-03 Fluidized bed thin iron ore reducing apparatus, and method for it BR9907794A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019980053955A KR100321050B1 (en) 1998-12-09 1998-12-09 A fluidized-bed type reduction method and apparatus for fine iron ores
PCT/KR1999/000729 WO2000034531A1 (en) 1998-12-09 1999-12-03 Fluidized bed type fine iron ore reducing apparatus, and method therefor

Publications (1)

Publication Number Publication Date
BR9907794A true BR9907794A (en) 2000-10-24

Family

ID=19562041

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9907794A BR9907794A (en) 1998-12-09 1999-12-03 Fluidized bed thin iron ore reducing apparatus, and method for it

Country Status (8)

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

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409387B (en) * 2000-06-28 2002-07-25 Voest Alpine Ind Anlagen Process and installation for the gas reduction of particulate oxide-containing ores
CA2511731C (en) * 2002-12-23 2012-08-21 Posco An improved fluidized bed apparatus for molten iron production and method using the same
CA2511729C (en) 2002-12-23 2012-02-07 Posco An apparatus for manufacturing molten iron to dry and convey iron ores and additives and manufacturing method using the same
US8968693B2 (en) 2012-08-30 2015-03-03 Honeywell International Inc. Internal cyclone for fluidized bed reactor
KR102153185B1 (en) * 2018-11-28 2020-09-07 주식회사 포스코 Method and apparatus for manufacturing lithium sulfate solution from lithium bearing ore
KR20240076517A (en) * 2022-11-22 2024-05-30 주식회사 포스코 Reduction reactor and manufacturing method of direct reduced iron

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970003636B1 (en) * 1994-12-31 1997-03-20 포항종합제철 주식회사 A furnace for reduction fine coal in the manufacture of iron melts
KR100213327B1 (en) * 1995-12-29 1999-08-02 이구택 Three-stage fluidized-bed reactor for the reduction of fine ore

Also Published As

Publication number Publication date
ZA200004742B (en) 2001-03-15
KR20000038827A (en) 2000-07-05
KR100321050B1 (en) 2002-04-17
JP2002531705A (en) 2002-09-24
EP1055006A1 (en) 2000-11-29
CA2320242A1 (en) 2000-06-15
AU1513200A (en) 2000-06-26
WO2000034531A1 (en) 2000-06-15

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Legal Events

Date Code Title Description
FA10 Dismissal: dismissal - article 33 of industrial property law
B11Y Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired