BR112023024387A2 - Método para desfosforação de ferro fundido - Google Patents

Método para desfosforação de ferro fundido

Info

Publication number
BR112023024387A2
BR112023024387A2 BR112023024387A BR112023024387A BR112023024387A2 BR 112023024387 A2 BR112023024387 A2 BR 112023024387A2 BR 112023024387 A BR112023024387 A BR 112023024387A BR 112023024387 A BR112023024387 A BR 112023024387A BR 112023024387 A2 BR112023024387 A2 BR 112023024387A2
Authority
BR
Brazil
Prior art keywords
cast iron
iron
slag
dephosphorization
dephosphorized
Prior art date
Application number
BR112023024387A
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 BR112023024387A2 publication Critical patent/BR112023024387A2/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
    • C21C7/064—Dephosphorising; Desulfurising
    • 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
    • C21C1/02—Dephosphorising or desulfurising
    • 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
    • C21C1/02—Dephosphorising or desulfurising
    • C21C1/025—Agents used for dephosphorising or desulfurising
    • 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
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/54—Processes yielding slags of special composition
    • 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
    • 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
    • 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
    • C21C2300/00—Process aspects
    • C21C2300/08—Particular sequence of the process steps
    • 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
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
BR112023024387A 2021-05-26 2022-04-19 Método para desfosforação de ferro fundido BR112023024387A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021088400 2021-05-26
PCT/JP2022/018163 WO2022249797A1 (ja) 2021-05-26 2022-04-19 溶鉄の脱りん方法

Publications (1)

Publication Number Publication Date
BR112023024387A2 true BR112023024387A2 (pt) 2024-02-15

Family

ID=84229949

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112023024387A BR112023024387A2 (pt) 2021-05-26 2022-04-19 Método para desfosforação de ferro fundido

Country Status (8)

Country Link
US (1) US20240229177A1 (https=)
EP (1) EP4324940A4 (https=)
JP (1) JP7302749B2 (https=)
KR (1) KR20240010004A (https=)
CN (1) CN117396614A (https=)
BR (1) BR112023024387A2 (https=)
TW (1) TWI823400B (https=)
WO (1) WO2022249797A1 (https=)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2026014527A1 (ja) * 2024-07-12 2026-01-15 Ｊｆｅスチール株式会社 溶鉄の脱りん方法
WO2026014528A1 (ja) * 2024-07-12 2026-01-15 Ｊｆｅスチール株式会社 溶鉄の脱りん方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56216A (en) * 1979-06-16 1981-01-06 Chobe Taguchi Dephosphoration of iron steel
EP0104841B1 (en) * 1982-09-23 1986-07-30 National Research Development Corporation Removing phosphorous from iron
JPS61291913A (ja) 1985-06-20 1986-12-22 Nippon Kokan Kk <Nkk> 溶鋼の脱燐方法
AT403293B (de) 1995-01-16 1997-12-29 Kct Tech Gmbh Verfahren und anlage zum herstellen von legierten stählen
JP3671769B2 (ja) * 1999-09-30 2005-07-13 住友金属工業株式会社 精錬時のスラグフォーミングの抑制方法
BR0213573B1 (pt) * 2002-08-27 2013-11-12 Método para produção de ferro fundido com baixo teor de fósforo
JP2005089839A (ja) 2003-09-18 2005-04-07 Jfe Steel Kk 溶鋼の溶製方法
CN108950131B (zh) * 2018-07-10 2020-04-28 娄永琰 一种h13模具钢的冶炼及还原脱磷方法
CN111748673B (zh) * 2020-06-02 2021-06-11 北京科技大学 一种电弧炉炼钢用多功能氢氧烧嘴及供能控制方法

Also Published As

Publication number Publication date
JP7302749B2 (ja) 2023-07-04
TWI823400B (zh) 2023-11-21
US20240229177A1 (en) 2024-07-11
EP4324940A4 (en) 2024-11-20
JPWO2022249797A1 (https=) 2022-12-01
CN117396614A (zh) 2024-01-12
TW202246531A (zh) 2022-12-01
KR20240010004A (ko) 2024-01-23
EP4324940A1 (en) 2024-02-21
WO2022249797A1 (ja) 2022-12-01

Similar Documents

Publication Publication Date Title
BR112023024387A2 (pt) Método para desfosforação de ferro fundido
US3953199A (en) Process for refining pig iron
SU727153A3 (ru) Способ конвертерного передела высокофосфористого чугуна в сталь
CN104245965B (zh) 转炉中铁水的精炼方法
BR112023024464A2 (pt) Método para refinar ferro fundido
BR9809070A (pt) Mistura dessulfurante e método para dessulfurar ferro fundido
BR102014005497A2 (pt) Métodos para refinar liga
JPWO2022249797A5 (https=)
JP2015092018A (ja) 転炉での溶銑の精錬方法
JP2015042780A (ja) 転炉における溶銑の脱燐処理方法
BR112014002610A2 (pt) método e aparelho para desfosforização de metal quente líquido tal como ferro de alto forno líquido
JPS5931810A (ja) 転炉製鋼法
BRPI0506964B1 (pt) Método para produzir aço de baixo teor em carbono
Schrama et al. The leading hot metal desulfurization methods: a comparison between Kr, Mmi and co-injection
CN117441032A (zh) 钢液的二次精炼方法及钢的制造方法
JP6544531B2 (ja) 溶銑の精錬方法
Van Poucke et al. Improvement of dephosphorization and decarburization by injection of metallurgical powders in the RH
TWI412600B (zh) Method of Reducing Phosphorus Content
JPS58221210A (ja) 溶銑予備処理方法
Tiwari et al. CFD Flow Modeling and Mixing in an Elliptical Ladle
WO2026014528A1 (ja) 溶鉄の脱りん方法
BR102021001497A2 (pt) Sistema para dessulfuração de metais líquidos
RU2023135001A (ru) Способ дефосфоризации расплавленного чугуна
RU2123056C1 (ru) Способ продувки конвертерной ванны
BR112023014263B1 (pt) Método de refino de ferro fundido

Legal Events

Date Code Title Description
B06W Patent application suspended after preliminary examination (for patents with searches from other patent authorities) chapter 6.23 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 19/04/2022, OBSERVADAS AS CONDICOES LEGAIS