BR112017021087A2 - método de operação de conversor de sopro superior e inferior - Google Patents

método de operação de conversor de sopro superior e inferior

Info

Publication number
BR112017021087A2
BR112017021087A2 BR112017021087-8A BR112017021087A BR112017021087A2 BR 112017021087 A2 BR112017021087 A2 BR 112017021087A2 BR 112017021087 A BR112017021087 A BR 112017021087A BR 112017021087 A2 BR112017021087 A2 BR 112017021087A2
Authority
BR
Brazil
Prior art keywords
converter
blowing
blow
nozzles
molten iron
Prior art date
Application number
BR112017021087-8A
Other languages
English (en)
Japanese (ja)
Other versions
BR112017021087B1 (pt
Inventor
Takahashi Yukio
Amano Shota
Tawa Toshinori
Uchida Yuichi
Miki Yuji
Original Assignee
Jfe Steel Corporation
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 Corporation filed Critical Jfe Steel Corporation
Publication of BR112017021087A2 publication Critical patent/BR112017021087A2/pt
Publication of BR112017021087B1 publication Critical patent/BR112017021087B1/pt

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28Manufacture of steel in the converter
    • C21C5/30Regulating or controlling the blowing
    • C21C5/35Blowing from above and through the bath
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28Manufacture of steel in the converter
    • C21C5/42Constructional features of converters
    • C21C5/46Details or accessories
    • C21C5/4606Lances or injectors
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28Manufacture of steel in the converter
    • C21C5/42Constructional features of converters
    • C21C5/46Details or accessories
    • C21C5/48Bottoms or tuyéres of converters

Landscapes

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

Abstract

[tarefa] é fornecer um método de operação de um conversor de sopro superior e inferior que é capaz de suprimir a oscilação de um conversor e geração de poeira e também suprimir o desgaste do refratário de parede de forno em um refino por descarbonetação com um conversor de sopro superior e inferior. [solução] um método de operação de um conversor de sopro superior e inferior pela utilização de uma lança de múltiplos furos de sopro superior possuindo uma pluralidade de bocais de lança para lançar gás de oxigênio, lançando jatos de oxigênio a partir dos bocais em um ângulo de inclinação de bocal inclinado com relação a um eixo geométrico central da lança de múltiplos furos de sopro superior, dispondo n algaravizes de sopro inferior em um fundo do conversor e assoprando um gás de agitação a partir dos algaravizes de sopro inferior, onde uma taxa de interferência (ir) ilustrando um grau em evolução entre um ponto quente formado atingindo-se o jato de oxigênio lançado a partir da lança de múltiplos furos de sopro superior para uma superfície de banho de ferro derretido e uma região flutuante de gás de agitação formada em uma superfície de banho de ferro derretido pelo sopro e flutuação do gás de agitação a partir dos algaravizes de sopro inferior no ferro derretido não é maior do que 0,7.
BR112017021087-8A 2015-03-30 2016-03-25 Método de operação de conversor de sopro superior e inferior BR112017021087B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2015-068542 2015-03-30
JP2015068542 2015-03-30
PCT/JP2016/059541 WO2016158714A1 (ja) 2015-03-30 2016-03-25 上底吹き転炉の操業方法

Publications (2)

Publication Number Publication Date
BR112017021087A2 true BR112017021087A2 (pt) 2018-07-03
BR112017021087B1 BR112017021087B1 (pt) 2021-08-31

Family

ID=57004303

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112017021087-8A BR112017021087B1 (pt) 2015-03-30 2016-03-25 Método de operação de conversor de sopro superior e inferior

Country Status (7)

Country Link
EP (1) EP3279340B1 (pt)
JP (1) JP6358454B2 (pt)
KR (1) KR102026765B1 (pt)
CN (1) CN107429303B (pt)
BR (1) BR112017021087B1 (pt)
TW (1) TWI585208B (pt)
WO (1) WO2016158714A1 (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112021019932A2 (pt) 2019-04-05 2021-12-07 Jfe Steel Corp Vaso de refinação para fusão de alta temperatura
CN113234884A (zh) * 2021-04-23 2021-08-10 甘肃酒钢集团宏兴钢铁股份有限公司 一种解决转炉顶吹气体与底吹枪位置干涉的方法
CN115466814B (zh) * 2022-08-30 2023-09-15 北京科技大学 一种提升熔池动力学特性的转炉及方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5757816A (en) * 1980-09-19 1982-04-07 Kawasaki Steel Corp Steel making method by composite top and bottom blown converter
JPS5816013A (ja) * 1981-07-17 1983-01-29 Kawasaki Steel Corp 上底吹転炉の操業方法および上底吹転炉操業用上吹ランス
JPS60165313A (ja) 1984-02-07 1985-08-28 Nippon Steel Corp 溶融金属精錬用上吹ランス
JP3167888B2 (ja) * 1995-07-27 2001-05-21 川崎製鉄株式会社 含クロム溶鋼の脱炭精錬方法及び精錬ガス用上吹ランス
JP3580177B2 (ja) * 1999-04-23 2004-10-20 住友金属工業株式会社 含Cr溶鋼の脱炭精錬方法
JP4120161B2 (ja) * 2000-01-24 2008-07-16 Jfeスチール株式会社 鉄浴型溶融還元炉の操業方法
JP2002105525A (ja) 2000-09-26 2002-04-10 Kawasaki Steel Corp 上底吹き転炉
JP2002285224A (ja) 2001-03-23 2002-10-03 Nippon Steel Corp 転炉吹錬方法および転炉用吹錬ランス
DE102004016681A1 (de) * 2004-04-05 2005-12-22 Ispat Industries Ltd., Taluka-Pen Verfahren und Anlagen zum Herstellen und Erhöhen der jährlichen Produktionsmenge von Massenstahl oder hochwertigen Stahlgüten in einer Zwei-Gefäß-Anlage
JP5724761B2 (ja) * 2011-08-31 2015-05-27 Jfeスチール株式会社 転炉吹錬方法
EP2752497B1 (en) * 2011-10-17 2018-08-22 JFE Steel Corporation Powder injection lance and method of refining molten iron using said powder injection lance
JP5553179B2 (ja) 2012-01-12 2014-07-16 新日鐵住金株式会社 転炉脱炭精錬におけるスピッティング低減法

Also Published As

Publication number Publication date
TWI585208B (zh) 2017-06-01
TW201641696A (zh) 2016-12-01
EP3279340A4 (en) 2018-02-07
JPWO2016158714A1 (ja) 2017-05-25
CN107429303B (zh) 2019-12-31
KR102026765B1 (ko) 2019-09-30
JP6358454B2 (ja) 2018-07-18
CN107429303A (zh) 2017-12-01
BR112017021087B1 (pt) 2021-08-31
KR20170117168A (ko) 2017-10-20
EP3279340A1 (en) 2018-02-07
WO2016158714A1 (ja) 2016-10-06
EP3279340B1 (en) 2020-11-18

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Legal Events

Date Code Title Description
B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 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 25/03/2016, OBSERVADAS AS CONDICOES LEGAIS.