EP4733420A1 - Blast furnace operation method - Google Patents

Blast furnace operation method

Info

Publication number
EP4733420A1
EP4733420A1 EP24825948.3A EP24825948A EP4733420A1 EP 4733420 A1 EP4733420 A1 EP 4733420A1 EP 24825948 A EP24825948 A EP 24825948A EP 4733420 A1 EP4733420 A1 EP 4733420A1
Authority
EP
European Patent Office
Prior art keywords
gas
blast furnace
temperature
hydrogen
rbfg
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
EP24825948.3A
Other languages
German (de)
English (en)
French (fr)
Inventor
Hiroshi Sakai
Kaoru Nakano
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 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 EP4733420A1 publication Critical patent/EP4733420A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/002—Evacuating and treating of exhaust gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C21B2005/005—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
    • C21B2100/28—Increasing the gas reduction potential of recycled exhaust gases by separation

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)
EP24825948.3A 2023-06-21 2024-06-19 Blast furnace operation method Pending EP4733420A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023101584 2023-06-21
PCT/JP2024/022266 WO2024262547A1 (ja) 2023-06-21 2024-06-19 高炉の操業方法

Publications (1)

Publication Number Publication Date
EP4733420A1 true EP4733420A1 (en) 2026-04-29

Family

ID=93935464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24825948.3A Pending EP4733420A1 (en) 2023-06-21 2024-06-19 Blast furnace operation method

Country Status (6)

Country Link
EP (1) EP4733420A1 (https=)
JP (1) JPWO2024262547A1 (https=)
KR (1) KR20260011752A (https=)
CN (1) CN121368639A (https=)
TW (1) TWI906913B (https=)
WO (1) WO2024262547A1 (https=)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1438999A (en) * 1972-11-25 1976-06-09 Nippon Kokan Kk Blast furnace operating methods
JPS6448638A (en) * 1987-08-17 1989-02-23 Ryobi Ltd Production of collapsible core
JP4661890B2 (ja) * 2008-03-17 2011-03-30 Ｊｆｅスチール株式会社 高炉操業方法
JP6258039B2 (ja) * 2014-01-07 2018-01-10 新日鐵住金株式会社 高炉の操業方法
JP7055082B2 (ja) * 2018-09-14 2022-04-15 日本製鉄株式会社 高炉の操業方法
JP7105708B2 (ja) * 2019-02-18 2022-07-25 日本製鉄株式会社 還元ガスの吹込み量決定方法及び高炉の操業方法
CN210182571U (zh) 2019-04-03 2020-03-24 莱尔德电子材料(深圳)有限公司 低介电、低损耗天线罩
AU2020393659B2 (en) * 2019-11-29 2023-07-20 Jfe Steel Corporation Blast furnace operation method
EP4144868B1 (en) * 2020-04-27 2024-07-24 JFE Steel Corporation Steelmaking line and method of producing reduced iron
JP2023035266A (ja) * 2021-08-31 2023-03-13 株式会社クリーンプラネット 高炉用水素加熱装置、高炉用水素加熱方法および高炉操業方法

Also Published As

Publication number Publication date
CN121368639A (zh) 2026-01-20
TW202500764A (zh) 2025-01-01
TWI906913B (zh) 2025-12-01
JPWO2024262547A1 (https=) 2024-12-26
WO2024262547A1 (ja) 2024-12-26
KR20260011752A (ko) 2026-01-23

Similar Documents

Publication Publication Date Title
JP7297091B2 (ja) 高炉の操業方法
CN118019863A (zh) 用于操作竖炉设备的方法
AU2022294517B2 (en) Method of producing reduced iron
CN113423845B (zh) 高炉操作方法
WO2015090900A1 (en) Method for operating a top gas recycling blast furnace installation
JP2009221547A (ja) 高炉操業方法
EP4353841A1 (en) Shaft furnace operation method and reduce iron production method
EP4141130B1 (en) Method of operating blast furnace and blast furnace ancillary facility
EP4067508A1 (en) Blast furnace operation method and blast furnace ancillary equipment
US20250163525A1 (en) Method of reducing iron ore powder
JP2025530034A (ja) 製錬炉設備を操業するための方法
EP4733420A1 (en) Blast furnace operation method
Barrett et al. Replacement of pulverised coal injection (PCI) with hydrogen and its impact on blast furnace internal conditions
EP4306660A1 (en) Oxygen blast furnace and oxygen blast furnace operation method
JP7791433B2 (ja) 高炉の操業方法
JP7709109B1 (ja) 高炉の操業方法
KR102548309B1 (ko) 이산화탄소 배출 저감형 용철 제조장치 및 그 제조방법
JP7817658B2 (ja) 高炉の操業方法
JP7832580B2 (ja) 高炉の操業方法
JP2025133638A (ja) 高炉の操業方法
JP2025148977A (ja) 高炉の操業方法
RU2784932C1 (ru) Способ эксплуатации доменной печи
JP2026052010A (ja) 高炉ガスの調整方法、水素の回収方法及び二酸化炭素の気体源の回収方法
JP2025100456A (ja) 高炉の操業方法
JP2025130949A (ja) 高炉の操業方法

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20251229

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR