BR112022021744A2 - Método para produzir ferro reduzido - Google Patents

Método para produzir ferro reduzido

Info

Publication number
BR112022021744A2
BR112022021744A2 BR112022021744A BR112022021744A BR112022021744A2 BR 112022021744 A2 BR112022021744 A2 BR 112022021744A2 BR 112022021744 A BR112022021744 A BR 112022021744A BR 112022021744 A BR112022021744 A BR 112022021744A BR 112022021744 A2 BR112022021744 A2 BR 112022021744A2
Authority
BR
Brazil
Prior art keywords
reduced iron
shaft furnace
gas
reducing
blowing
Prior art date
Application number
BR112022021744A
Other languages
English (en)
Inventor
Inada Takanobu
Mizutani Moritoshi
UJISAWA Yutaka
Yasuda Naoto
Funagane Hitoshi
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of BR112022021744A2 publication Critical patent/BR112022021744A2/pt

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
    • C21B13/0073—Selection or treatment of the reducing gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B1/16—Arrangements of tuyeres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste 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
    • C21B2100/26—Increasing the gas reduction potential of recycled exhaust gases by adding additional fuel in recirculation pipes
    • 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
    • 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
    • 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
    • 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
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/64—Controlling the physical properties of the gas, e.g. pressure or temperature
    • 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
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/66—Heat exchange
    • 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
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacture Of Iron (AREA)
  • Control And Safety Of Cranes (AREA)

Abstract

MÉTODO PARA PRODUZIR FERRO REDUZIDO. Este método para produzir ferro reduzido reduzindo o óxido de ferro carregado em um forno de cuba compreende: soprar um gás misto aquecido que inclui gás nitrogênio e um gás redutor contendo 90% em volume ou mais de gás hidrogênio em um forno de cuba a partir de uma ventaneira provida na parte inferior parte de uma zona de redução do forno de cuba, enquanto sopra pelo menos parte do gás redutor à temperatura normal para uma zona de resfriamento de ferro reduzido provida na parte inferior do forno de cuba; e usando o gás redutor subindo através da zona de resfriamento para reduzir o óxido de ferro.
BR112022021744A 2020-05-28 2021-05-14 Método para produzir ferro reduzido BR112022021744A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020093139 2020-05-28
PCT/JP2021/018391 WO2021241272A1 (ja) 2020-05-28 2021-05-14 還元鉄の製造方法

Publications (1)

Publication Number Publication Date
BR112022021744A2 true BR112022021744A2 (pt) 2022-12-06

Family

ID=78744545

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112022021744A BR112022021744A2 (pt) 2020-05-28 2021-05-14 Método para produzir ferro reduzido

Country Status (11)

Country Link
US (1) US20230167517A1 (pt)
EP (1) EP4159879A4 (pt)
JP (1) JPWO2021241272A1 (pt)
KR (1) KR20220158079A (pt)
CN (1) CN115552042A (pt)
AU (1) AU2021281774A1 (pt)
BR (1) BR112022021744A2 (pt)
CA (1) CA3176589A1 (pt)
MX (1) MX2022013918A (pt)
TW (1) TWI789760B (pt)
WO (1) WO2021241272A1 (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023186967A1 (de) * 2022-03-30 2023-10-05 Primetals Technologies Austria GmbH Reduktion metalloxidhaltigen materials auf basis von ammoniak nh3
EP4253572A1 (de) * 2022-03-30 2023-10-04 Primetals Technologies Austria GmbH Reduktion metalloxidhaltigen materials auf basis von ammoniak nh3
SE2250422A1 (en) * 2022-04-01 2023-10-02 Luossavaara Kiirunavaara Ab Method and configuration for producing reduced metal material

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4947208A (pt) * 1972-03-11 1974-05-07
JPS49121708A (pt) * 1973-03-26 1974-11-21
ZA802257B (en) * 1979-04-24 1982-02-24 Foster Wheeler Ltd Production of reducing gas for furnace injection
US4363654A (en) * 1980-04-08 1982-12-14 Geoffrey Frederick Production of reducing gas for furnace injection
US4556417A (en) * 1983-05-17 1985-12-03 Hylsa, S.A. Process for the direct reduction of iron ores
BRPI0611894B1 (pt) * 2005-06-24 2015-07-21 Technological Resources Ptv Ltd Processo e usina para produzir ferro a partir de um material que contém ferro
JP2010046055A (ja) 2008-07-25 2010-03-04 Toshio Kondo 海藻の収穫装置とその装置を使用した収穫方法
CN101586172B (zh) * 2009-07-06 2010-09-01 何德武 金属化球团和还原铁粉的制备方法
CN101787406A (zh) * 2010-01-12 2010-07-28 北京科技大学 一种超细赤铁矿粉非熔态还原工艺及装置
JP5605828B2 (ja) * 2010-03-03 2014-10-15 国立大学法人北海道大学 製鉄方法および製鉄システム
CN101935732B (zh) * 2010-08-11 2014-06-11 中冶赛迪上海工程技术有限公司 一种气基还原竖炉还原煤气的入炉方法
JP5594013B2 (ja) * 2010-09-21 2014-09-24 Ｊｆｅスチール株式会社 還元鉄製造方法
KR101178536B1 (ko) * 2010-12-28 2012-08-30 주식회사 포스코 환원철의 제조방법 및 제조장치
CN102206724B (zh) * 2011-05-03 2012-09-05 苏亚杰 焦炉煤气干熄焦联产直接还原铁的方法
JP2013216929A (ja) 2012-04-05 2013-10-24 Jfe Steel Corp 還元鉄の冷却方法
UA117374C2 (uk) * 2013-07-31 2018-07-25 Мідрекс Текнолоджиз, Інк. Відновлення оксиду заліза до металевого заліза із застосуванням коксового газу та газу зі сталеплавильної печі з подачею кисню
CN104293998A (zh) * 2014-07-18 2015-01-21 北京神雾环境能源科技集团股份有限公司 气基竖炉制备海绵铁的方法和系统
CN105219907A (zh) 2015-10-14 2016-01-06 钢铁研究总院 高磷鲕状赤铁矿气基直接还原-磨矿磁选的炼铁工艺
EP3581663A1 (de) 2018-06-12 2019-12-18 Primetals Technologies Austria GmbH Herstellung von karburiertem eisenschwamm mittels wasserstoffbasierter direktreduktion
JP2020093139A (ja) 2020-03-17 2020-06-18 株式会社三洋物産 遊技機

Also Published As

Publication number Publication date
TWI789760B (zh) 2023-01-11
CA3176589A1 (en) 2021-12-02
JPWO2021241272A1 (pt) 2021-12-02
AU2021281774A1 (en) 2022-12-01
KR20220158079A (ko) 2022-11-29
EP4159879A4 (en) 2023-12-06
TW202200797A (zh) 2022-01-01
EP4159879A1 (en) 2023-04-05
US20230167517A1 (en) 2023-06-01
WO2021241272A1 (ja) 2021-12-02
CN115552042A (zh) 2022-12-30
MX2022013918A (es) 2022-11-30

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