JP7772242B2 - 溶鉄の製造方法 - Google Patents

溶鉄の製造方法

Info

Publication number
JP7772242B2
JP7772242B2 JP2024546450A JP2024546450A JP7772242B2 JP 7772242 B2 JP7772242 B2 JP 7772242B2 JP 2024546450 A JP2024546450 A JP 2024546450A JP 2024546450 A JP2024546450 A JP 2024546450A JP 7772242 B2 JP7772242 B2 JP 7772242B2
Authority
JP
Japan
Prior art keywords
burner
furnace
preheating chamber
chamber
preheating
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.)
Active
Application number
JP2024546450A
Other languages
English (en)
Japanese (ja)
Other versions
JPWO2024185210A1 (https=
Inventor
太 小笠原
信彦 小田
康一 堤
由枝 中井
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 JPWO2024185210A1 publication Critical patent/JPWO2024185210A1/ja
Application granted granted Critical
Publication of JP7772242B2 publication Critical patent/JP7772242B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5252—Manufacture of steel in electric furnaces in an electrically heated multi-chamber furnace, a combination of electric furnaces or an electric furnace arranged for associated working with a non electric furnace
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B11/00—Making pig-iron other than in blast furnaces
    • C21B11/10—Making pig-iron other than in blast furnaces in electric 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
    • C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/12—Making spongy iron or liquid steel, by direct processes in electric 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
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • C21B13/143—Injection of partially reduced ore into a molten bath
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
    • C21C5/5217—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the furnace
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/527—Charging of the electric furnace
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/562—Manufacture of steel by other methods starting from scrap
    • C21C5/565—Preheating of scrap
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C2100/00—Exhaust gas
    • C21C2100/04—Recirculation of the exhaust gas
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C2100/00—Exhaust gas
    • C21C2100/06—Energy from waste gas used in other processes

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
JP2024546450A 2023-03-07 2023-11-10 溶鉄の製造方法 Active JP7772242B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2023034273 2023-03-07
JP2023034273 2023-03-07
PCT/JP2023/040489 WO2024185210A1 (ja) 2023-03-07 2023-11-10 溶鉄の製造方法

Publications (2)

Publication Number Publication Date
JPWO2024185210A1 JPWO2024185210A1 (https=) 2024-09-12
JP7772242B2 true JP7772242B2 (ja) 2025-11-18

Family

ID=92674643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2024546450A Active JP7772242B2 (ja) 2023-03-07 2023-11-10 溶鉄の製造方法

Country Status (6)

Country Link
EP (1) EP4656742A1 (https=)
JP (1) JP7772242B2 (https=)
KR (1) KR20250126114A (https=)
CN (1) CN120813708A (https=)
TW (1) TWI881534B (https=)
WO (1) WO2024185210A1 (https=)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000008115A (ja) 1998-06-19 2000-01-11 Nkk Corp 冷鉄源の溶解方法
JP2008179876A (ja) 2006-03-23 2008-08-07 Jfe Steel Kk 粉体加熱バーナーランスおよびそれを用いた溶融還元方法
JP2018016832A (ja) 2016-07-26 2018-02-01 Ｊｆｅスチール株式会社 電気炉による溶鉄の製造方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4650226B2 (ja) 2005-11-16 2011-03-16 Ｊｆｅスチール株式会社 溶融還元方法
JP6427829B2 (ja) * 2016-03-31 2018-11-28 大陽日酸株式会社 冷鉄源の溶解・精錬炉、及び溶解・精錬炉の操業方法
US20190017745A1 (en) * 2017-07-11 2019-01-17 Air Products And Chemicals, Inc. Systems and Methods for Preheating Metal-Containing Pellets
CN110951937B (zh) * 2018-09-27 2021-10-22 宝山钢铁股份有限公司 一种采用电炉高效冶炼低氮钢的方法
KR20230132834A (ko) * 2021-02-10 2023-09-18 제이에프이 스틸 가부시키가이샤 영상 장치가 부착된 전기로
CN117280048A (zh) * 2021-05-07 2023-12-22 杰富意钢铁株式会社 电炉及制钢方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000008115A (ja) 1998-06-19 2000-01-11 Nkk Corp 冷鉄源の溶解方法
JP2008179876A (ja) 2006-03-23 2008-08-07 Jfe Steel Kk 粉体加熱バーナーランスおよびそれを用いた溶融還元方法
JP2018016832A (ja) 2016-07-26 2018-02-01 Ｊｆｅスチール株式会社 電気炉による溶鉄の製造方法

Also Published As

Publication number Publication date
KR20250126114A (ko) 2025-08-22
JPWO2024185210A1 (https=) 2024-09-12
CN120813708A (zh) 2025-10-17
WO2024185210A1 (ja) 2024-09-12
EP4656742A1 (en) 2025-12-03
TW202436631A (zh) 2024-09-16
TWI881534B (zh) 2025-04-21

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