BR112021018589A2 - Método de controle de sopro e aparelho de controle de sopro para forno de refino de desfosforação do tipo conversor - Google Patents

Método de controle de sopro e aparelho de controle de sopro para forno de refino de desfosforação do tipo conversor

Info

Publication number
BR112021018589A2
BR112021018589A2 BR112021018589A BR112021018589A BR112021018589A2 BR 112021018589 A2 BR112021018589 A2 BR 112021018589A2 BR 112021018589 A BR112021018589 A BR 112021018589A BR 112021018589 A BR112021018589 A BR 112021018589A BR 112021018589 A2 BR112021018589 A2 BR 112021018589A2
Authority
BR
Brazil
Prior art keywords
oxygen
amount
blowing
converter
furnace
Prior art date
Application number
BR112021018589A
Other languages
English (en)
Inventor
Hiroto Kase
Kohei Kato
Shinji Tomiyama
Shota Amano
Yukio Takahashi
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 BR112021018589A2 publication Critical patent/BR112021018589A2/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
    • 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
    • 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
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4673—Measuring and sampling devices
    • 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
    • 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
    • C21C2300/00—Process aspects
    • C21C2300/06—Modeling of the process, e.g. for control purposes; CII
    • 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
    • Y02P10/25—Process efficiency

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (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)

Abstract

método de controle de sopro e aparelho de controle de sopro para forno de refino de desfosforação do tipo conversor. um método de controle de sopro para um forno de refino de desfosforação do tipo conversor, de acordo com a presente invenção, inclui: uma etapa de cálculo da quantidade de acúmulo de oxigênio dentro do forno para calcular a quantidade de oxigênio acumulado em um forno, com base em condições de sopro incluindo a quantidade de alimentação de oxigênio e a quantidade de carga de material auxiliar para um forno de refino de desfosforação do tipo conversor, resultados de medição do forno de refino de desfosforação do tipo conversor incluindo a vazão e a concentração de componentes de gás de escape no forno de refino de desfosforação do tipo conversor, e valores analíticos de componentes e a temperatura de ferro fundido; uma etapa de extração de ponto característico para monitorar sequencialmente uma alteração da quantidade de oxigênio acumulado no forno durante um tratamento de sopro e extrair um ponto característico de flutuações na quantidade de oxigênio acumulado no forno; uma etapa de determinação da quantidade de oxigênio na extremidade de sopro para determinar a quantidade de oxigênio na extremidade de sopro até que o tratamento de sopro esteja concluído, com base no ponto característico extraído na etapa de extração de ponto característico; e uma etapa de controle para concluir o tratamento de sopro em um momento em que a quantidade de alimentação acumulada de oxigênio alimentado no forno de refino de desfosforação do tipo conversor atingiu a quantidade de oxigênio na extremidade de sopro determinada na etapa de determinação da quantidade de oxigênio na extremidade de sopro.
BR112021018589A 2019-03-22 2020-03-03 Método de controle de sopro e aparelho de controle de sopro para forno de refino de desfosforação do tipo conversor BR112021018589A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019054154 2019-03-22
PCT/JP2020/008830 WO2020195598A1 (ja) 2019-03-22 2020-03-03 転炉型脱燐精錬炉の吹錬制御方法及び吹錬制御装置

Publications (1)

Publication Number Publication Date
BR112021018589A2 true BR112021018589A2 (pt) 2021-11-23

Family

ID=72610009

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112021018589A BR112021018589A2 (pt) 2019-03-22 2020-03-03 Método de controle de sopro e aparelho de controle de sopro para forno de refino de desfosforação do tipo conversor

Country Status (7)

Country Link
EP (1) EP3943618B1 (pt)
JP (1) JP6795133B1 (pt)
KR (1) KR102534954B1 (pt)
CN (1) CN113574188B (pt)
BR (1) BR112021018589A2 (pt)
TW (1) TWI732490B (pt)
WO (1) WO2020195598A1 (pt)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4474361A (en) * 1980-07-30 1984-10-02 Nippon Steel Corporation Oxygen-blown steelmaking furnace
JPS59202610A (ja) 1983-04-30 1984-11-16 Toda Kogyo Corp 磁気記録用針状晶鉄合金磁性粒子粉末及びその製造法
JPH05239524A (ja) * 1992-02-28 1993-09-17 Sumitomo Metal Ind Ltd 転炉吹錬制御方法
JP4779388B2 (ja) * 2004-03-25 2011-09-28 Ｊｆｅスチール株式会社 溶銑の脱りん方法
JP4701727B2 (ja) * 2005-01-25 2011-06-15 Ｊｆｅスチール株式会社 高炭素極低りん鋼の溶製方法
CN101305105B (zh) * 2005-11-09 2010-09-08 杰富意钢铁株式会社 铁水的脱磷处理方法
JP5582105B2 (ja) 2011-07-15 2014-09-03 新日鐵住金株式会社 転炉吹錬制御方法
CN102242239B (zh) * 2011-07-28 2013-04-17 首钢总公司 利用顶底复吹转炉的铁水预脱磷方法
JP5924186B2 (ja) * 2011-08-23 2016-05-25 Ｊｆｅスチール株式会社 転炉での溶銑の脱炭精錬方法
CN102559985B (zh) * 2012-03-01 2013-07-31 江苏省沙钢钢铁研究院有限公司 转炉低磷钢冶炼方法
JP5790964B2 (ja) * 2013-01-18 2015-10-07 Ｊｆｅスチール株式会社 溶銑の予備処理方法
JP6314484B2 (ja) * 2014-01-14 2018-04-25 新日鐵住金株式会社 溶銑脱りん方法
JP2017008349A (ja) * 2015-06-18 2017-01-12 Ｊｆｅスチール株式会社 溶湯状況推定装置および溶湯状況推定方法
KR102065455B1 (ko) * 2016-07-14 2020-01-13 닛폰세이테츠 가부시키가이샤 용강 중 인 농도 추정 방법 및 전로 취련 제어 장치
JP6536520B2 (ja) * 2016-09-16 2019-07-03 Ｊｆｅスチール株式会社 同一転炉における溶銑の予備処理方法

Also Published As

Publication number Publication date
EP3943618A1 (en) 2022-01-26
JPWO2020195598A1 (ja) 2021-04-08
WO2020195598A1 (ja) 2020-10-01
EP3943618B1 (en) 2024-02-21
CN113574188A (zh) 2021-10-29
JP6795133B1 (ja) 2020-12-02
EP3943618A4 (en) 2022-05-18
TWI732490B (zh) 2021-07-01
TW202043490A (zh) 2020-12-01
KR20210129145A (ko) 2021-10-27
KR102534954B1 (ko) 2023-05-26
CN113574188B (zh) 2022-10-18

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Legal Events

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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 03/03/2020, OBSERVADAS AS CONDICOES LEGAIS

B09W Correction of the decision to grant [chapter 9.1.4 patent gazette]

Free format text: REFERENTE A RPI 2780 DE 16/04/2024.