BR112023024464A2 - Método para refinar ferro fundido - Google Patents

Método para refinar ferro fundido

Info

Publication number
BR112023024464A2
BR112023024464A2 BR112023024464A BR112023024464A BR112023024464A2 BR 112023024464 A2 BR112023024464 A2 BR 112023024464A2 BR 112023024464 A BR112023024464 A BR 112023024464A BR 112023024464 A BR112023024464 A BR 112023024464A BR 112023024464 A2 BR112023024464 A2 BR 112023024464A2
Authority
BR
Brazil
Prior art keywords
cast iron
iron
untreated
mass
decarburization
Prior art date
Application number
BR112023024464A
Other languages
English (en)
Portuguese (pt)
Inventor
Futoshi Ogasawara
Ryo Kawabata
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 BR112023024464A2 publication Critical patent/BR112023024464A2/pt

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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/068—Decarburising
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/04—Removing impurities other than carbon, phosphorus or sulfur
    • 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
    • C21C5/28—Manufacture of steel in the converter
    • 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
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/35—Blowing from above and through the 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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases
    • 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
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
BR112023024464A 2021-05-26 2022-04-19 Método para refinar ferro fundido BR112023024464A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021088031 2021-05-26
PCT/JP2022/018168 WO2022249798A1 (ja) 2021-05-26 2022-04-19 溶鉄の精錬方法

Publications (1)

Publication Number Publication Date
BR112023024464A2 true BR112023024464A2 (pt) 2024-02-06

Family

ID=84229902

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112023024464A BR112023024464A2 (pt) 2021-05-26 2022-04-19 Método para refinar ferro fundido

Country Status (8)

Country Link
US (1) US20240271233A1 (enrdf_load_stackoverflow)
EP (1) EP4328330A4 (enrdf_load_stackoverflow)
JP (1) JP7384294B2 (enrdf_load_stackoverflow)
KR (1) KR20230162108A (enrdf_load_stackoverflow)
CN (1) CN117377781A (enrdf_load_stackoverflow)
BR (1) BR112023024464A2 (enrdf_load_stackoverflow)
TW (1) TWI817507B (enrdf_load_stackoverflow)
WO (1) WO2022249798A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102840642B1 (ko) * 2023-10-04 2025-07-31 현대제철 주식회사 냉연강판 및 그 제조방법

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2007373B2 (de) * 1970-02-18 1973-05-03 Eisenwerk-Gesellschaft Maximilianshütte mbH, 8458 Sulzbach-Rosenberg Verfahren und konverter zum herstellen ferritischer chromstaehle
US3754894A (en) * 1972-04-20 1973-08-28 Joslyn Mfg & Supply Co Nitrogen control in argon oxygen refining of molten metal
JPS58147509A (ja) * 1982-02-26 1983-09-02 Kawasaki Steel Corp ステンレス鋼の溶製方法
JPS5925916A (ja) * 1982-08-02 1984-02-10 Kawasaki Steel Corp 含クロム合金銑の精錬方法
JPS60194009A (ja) * 1984-03-14 1985-10-02 Kawasaki Steel Corp ステンレス鋼の溶製方法
JPS61223117A (ja) * 1985-03-29 1986-10-03 Kawasaki Steel Corp 溶融スラグ内金属酸化物の還元回収方法
JP3309395B2 (ja) * 1990-12-25 2002-07-29 住友金属工業株式会社 転炉精錬方法
JP2754983B2 (ja) * 1991-09-26 1998-05-20 住友金属工業株式会社 転炉精錬方法
JP3496529B2 (ja) 1998-07-29 2004-02-16 住友金属工業株式会社 Ｒｈ真空精錬方法
JP3922181B2 (ja) 2002-12-27 2007-05-30 Ｊｆｅスチール株式会社 高清浄鋼の溶製方法
JP5092245B2 (ja) 2006-02-09 2012-12-05 Ｊｆｅスチール株式会社 溶鋼の脱窒方法
JP5428447B2 (ja) * 2008-03-31 2014-02-26 Ｊｆｅスチール株式会社 Ｒｈ真空脱ガス装置における溶鋼の精錬方法
JP5526565B2 (ja) * 2009-03-09 2014-06-18 Ｊｆｅスチール株式会社 転炉製鋼法
JP5589688B2 (ja) * 2009-09-10 2014-09-17 Ｊｆｅスチール株式会社 溶銑の製造方法
JP5910579B2 (ja) * 2013-08-01 2016-04-27 Ｊｆｅスチール株式会社 極低窒素純鉄の溶製方法
CN109852766B (zh) * 2018-12-05 2020-11-03 敬业钢铁有限公司 一种rh炉精炼氢氧控制工艺
CN111270036A (zh) * 2020-04-05 2020-06-12 上海泰普星坦新材料有限公司 一种氢能直接还原生产海绵铁的系统和工艺方法

Also Published As

Publication number Publication date
WO2022249798A1 (ja) 2022-12-01
CN117377781A (zh) 2024-01-09
EP4328330A4 (en) 2024-10-30
JPWO2022249798A1 (enrdf_load_stackoverflow) 2022-12-01
KR20230162108A (ko) 2023-11-28
TWI817507B (zh) 2023-10-01
TW202246528A (zh) 2022-12-01
US20240271233A1 (en) 2024-08-15
JP7384294B2 (ja) 2023-11-21
EP4328330A1 (en) 2024-02-28

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Legal Events

Date Code Title Description
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