EP4477762A4 - Operation method for blast furnace - Google Patents

Operation method for blast furnace

Info

Publication number
EP4477762A4
EP4477762A4 EP22937525.8A EP22937525A EP4477762A4 EP 4477762 A4 EP4477762 A4 EP 4477762A4 EP 22937525 A EP22937525 A EP 22937525A EP 4477762 A4 EP4477762 A4 EP 4477762A4
Authority
EP
European Patent Office
Prior art keywords
blast furnace
operation method
blast
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
EP22937525.8A
Other languages
German (de)
French (fr)
Other versions
EP4477762A1 (en
Inventor
Naomi SAWAKI
Yuki KAWASHIRI
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.)
JFE Steel Corp
Original Assignee
JFE 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 JFE Steel Corp filed Critical JFE Steel Corp
Publication of EP4477762A1 publication Critical patent/EP4477762A1/en
Publication of EP4477762A4 publication Critical patent/EP4477762A4/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
    • C21B5/001—Injecting additional fuel or reducing agents
    • C21B5/003—Injection of pulverulent coal
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/008—Composition or distribution of the charge
    • 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
    • C21B7/16—Tuyéres
    • C21B7/163—Blowpipe assembly
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)
EP22937525.8A 2022-04-11 2022-12-16 Operation method for blast furnace Pending EP4477762A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022064977 2022-04-11
PCT/JP2022/046305 WO2023199550A1 (en) 2022-04-11 2022-12-16 Operation method for blast furnace

Publications (2)

Publication Number Publication Date
EP4477762A1 EP4477762A1 (en) 2024-12-18
EP4477762A4 true EP4477762A4 (en) 2025-05-14

Family

ID=88329530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22937525.8A Pending EP4477762A4 (en) 2022-04-11 2022-12-16 Operation method for blast furnace

Country Status (6)

Country Link
EP (1) EP4477762A4 (en)
JP (1) JP7552881B2 (en)
KR (1) KR20240160150A (en)
CN (1) CN119032183A (en)
TW (1) TWI859671B (en)
WO (1) WO2023199550A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7824563B1 (en) * 2024-04-01 2026-03-05 日本製鉄株式会社 Method for producing unburned carbon-containing agglomerates and method for utilizing silica biomass in blast furnaces

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790711A (en) * 1957-04-30 Molten
US3460934A (en) * 1966-12-19 1969-08-12 John J Kelmar Blast furnace method
JP2022042774A (en) * 2020-09-03 2022-03-15 株式会社神戸製鋼所 Pig iron production method

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2962195B2 (en) 1995-06-27 1999-10-12 住友金属工業株式会社 Blast furnace operation method
JPH09143516A (en) * 1995-11-17 1997-06-03 Nippon Steel Corp Operating method of vertical furnace
AUPO944697A0 (en) * 1997-09-26 1997-10-16 Technological Resources Pty Limited A method of producing metals and metal alloys
JP2002060809A (en) * 2000-08-08 2002-02-28 Nippon Steel Corp Low blast furnace blast furnace operation method using sintered ore with adjusted chemical composition
JP3705243B2 (en) 2002-06-05 2005-10-12 住友金属工業株式会社 Blast furnace operation method
JP2005298923A (en) 2004-04-13 2005-10-27 Nippon Steel Corp High ore / reducing material ratio operation method in blast furnace
JP4603626B2 (en) * 2008-03-31 2010-12-22 新日本製鐵株式会社 Method for producing reduced iron
IN2012DN00994A (en) * 2009-08-21 2015-04-10 Nippon Steel & Sumitomo Metal Corp
JP2013082971A (en) * 2011-10-11 2013-05-09 Nippon Steel & Sumitomo Metal Corp Method for operating blast furnace
JP6273983B2 (en) * 2014-04-04 2018-02-07 新日鐵住金株式会社 Blast furnace operation method using reduced iron
CN105349725A (en) * 2015-11-07 2016-02-24 衡南扬钢冶金技术有限公司 Spontaneous combustion reduction method iron-smelting method and smelting device
CN110229939B (en) * 2019-07-15 2024-05-07 陶立群 Two-section rotary kiln non-coke iron-making device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790711A (en) * 1957-04-30 Molten
US3460934A (en) * 1966-12-19 1969-08-12 John J Kelmar Blast furnace method
JP2022042774A (en) * 2020-09-03 2022-03-15 株式会社神戸製鋼所 Pig iron production method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2023199550A1 *

Also Published As

Publication number Publication date
TW202340482A (en) 2023-10-16
EP4477762A1 (en) 2024-12-18
WO2023199550A1 (en) 2023-10-19
KR20240160150A (en) 2024-11-08
CN119032183A (en) 2024-11-26
TWI859671B (en) 2024-10-21
JP7552881B2 (en) 2024-09-18
JPWO2023199550A1 (en) 2023-10-19

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RIC1 Information provided on ipc code assigned before grant

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