CA3176131A1 - Method for producing reduced iron - Google Patents

Method for producing reduced iron Download PDF

Info

Publication number
CA3176131A1
CA3176131A1 CA3176131A CA3176131A CA3176131A1 CA 3176131 A1 CA3176131 A1 CA 3176131A1 CA 3176131 A CA3176131 A CA 3176131A CA 3176131 A CA3176131 A CA 3176131A CA 3176131 A1 CA3176131 A1 CA 3176131A1
Authority
CA
Canada
Prior art keywords
gas
reducing
reducing gas
nitrogen gas
shaft furnace
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.)
Pending
Application number
CA3176131A
Other languages
English (en)
French (fr)
Inventor
Takanobu INADA
Moritoshi Mizutani
Yutaka UJISAWA
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel and Sumitomo Metal 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 and Sumitomo Metal Corp filed Critical Nippon Steel and Sumitomo Metal Corp
Publication of CA3176131A1 publication Critical patent/CA3176131A1/en
Pending 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
    • C21B13/0073—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 specially adapted for 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
    • 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
    • F27D17/10—Arrangements for using waste heat
    • 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
    • F27D7/00—Forming, maintaining or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • 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
    • C21B2100/26—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
    • 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)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacture Of Iron (AREA)
  • Furnace Details (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Control And Safety Of Cranes (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Compounds Of Iron (AREA)
CA3176131A 2020-05-14 2021-05-13 Method for producing reduced iron Pending CA3176131A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2020-085078 2020-05-14
JP2020085078 2020-05-14
PCT/JP2021/018156 WO2021230307A1 (ja) 2020-05-14 2021-05-13 還元鉄の製造方法

Publications (1)

Publication Number Publication Date
CA3176131A1 true CA3176131A1 (en) 2021-11-18

Family

ID=78524497

Family Applications (1)

Application Number Title Priority Date Filing Date
CA3176131A Pending CA3176131A1 (en) 2020-05-14 2021-05-13 Method for producing reduced iron

Country Status (11)

Country Link
US (1) US12486548B2 (https=)
EP (1) EP4151754A4 (https=)
JP (2) JP7575697B2 (https=)
KR (1) KR20220160694A (https=)
CN (1) CN115552041A (https=)
AU (1) AU2021272824B2 (https=)
BR (1) BR112022021572A2 (https=)
CA (1) CA3176131A1 (https=)
MX (1) MX2022014023A (https=)
TW (1) TWI788843B (https=)
WO (1) WO2021230307A1 (https=)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE547126C2 (en) 2021-02-03 2025-04-29 Hybrit Development Ab Bleed-off gas recovery in a direct reduction process
SE545792C2 (en) * 2022-05-20 2024-02-06 Greeniron H2 Ab Method and device for producing direct reduced metal
EP4560034A4 (en) 2022-07-21 2025-12-24 Sumitomo Metal Mining Co PROCESS FOR SOLUTION OF NICKEL-CONTAINING OXIDE ORE
CN116734616A (zh) * 2023-06-02 2023-09-12 东北大学 一种氢基竖炉炉顶煤气的膜法回收利用装置及方法
AU2024317036A1 (en) 2023-07-28 2026-02-12 Sumitomo Metal Mining Co., Ltd. Method for smelting nickel-containing oxide ore
WO2025158579A1 (ja) * 2024-01-24 2025-07-31 日本製鉄株式会社 還元鉄の製造方法及びシャフト炉

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609288A (en) 1949-03-08 1952-09-02 Isobel E Stuart Process for the reduction of metal oxides by gases
GB729146A (en) * 1952-06-18 1955-05-04 Stanley Edward Matthews Apparatus and process for the reduction of metal oxides by gases
US2862808A (en) * 1957-07-31 1958-12-02 Alan N Mann Apparatus and method for reducing iron oxide pellets
US3135598A (en) 1960-04-27 1964-06-02 Yawata Iron & Steel Co Rapid direct reduction method of iron oxide
JPS4947208A (https=) * 1972-03-11 1974-05-07
DE2422641C2 (de) 1973-05-18 1985-11-21 Centre de Recherches Métallurgiques-Centrum voor Research in de Metallurgie, Brüssel/Bruxelles Verfahren zur Schachtofen-Erzreduktion
ZA802257B (en) * 1979-04-24 1982-02-24 Foster Wheeler Ltd Production of reducing gas for furnace injection
AU543499B2 (en) * 1979-04-24 1985-04-26 Foster Wheeler Ltd. Producing hydrogen and injecting into direct reduction furnaces or blast furnaces
US4363654A (en) * 1980-04-08 1982-12-14 Geoffrey Frederick Production of reducing gas for furnace injection
JPS63171817A (ja) 1987-01-09 1988-07-15 Nkk Corp 高炉付帯設備
US6027545A (en) * 1998-02-20 2000-02-22 Hylsa, S.A. De C.V. Method and apparatus for producing direct reduced iron with improved reducing gas utilization
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
KR101178536B1 (ko) * 2010-12-28 2012-08-30 주식회사 포스코 환원철의 제조방법 및 제조장치
CN105408500A (zh) * 2013-07-31 2016-03-16 米德雷克斯技术公司 使用天然气将氧化铁还原为金属铁
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
JP5714750B1 (ja) * 2014-06-02 2015-05-07 新日鉄住金エンジニアリング株式会社 直接還元鉄の製造設備、及び直接還元鉄の製造方法
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
ES2769264T3 (es) 2016-02-23 2020-06-25 Bilstein Gmbh & Co Kg Dispositivo y método para laminar una banda de material con espesor variable
EP3581663A1 (de) * 2018-06-12 2019-12-18 Primetals Technologies Austria GmbH Herstellung von karburiertem eisenschwamm mittels wasserstoffbasierter direktreduktion
JP7121642B2 (ja) 2018-11-20 2022-08-18 Ｋｙｂ株式会社 流体圧制御装置

Also Published As

Publication number Publication date
BR112022021572A2 (pt) 2022-12-06
AU2021272824B2 (en) 2024-10-03
KR20220160694A (ko) 2022-12-06
EP4151754A4 (en) 2023-09-13
JP2024113093A (ja) 2024-08-21
JP7575697B2 (ja) 2024-10-30
JPWO2021230307A1 (https=) 2021-11-18
US12486548B2 (en) 2025-12-02
WO2021230307A1 (ja) 2021-11-18
CN115552041A (zh) 2022-12-30
EP4151754A1 (en) 2023-03-22
TWI788843B (zh) 2023-01-01
TW202146667A (zh) 2021-12-16
MX2022014023A (es) 2022-11-30
US20230167516A1 (en) 2023-06-01
AU2021272824A1 (en) 2022-11-24

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