BR112019023181A2 - método para operar um conversor - Google Patents

método para operar um conversor Download PDF

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Publication number
BR112019023181A2
BR112019023181A2 BR112019023181A BR112019023181A BR112019023181A2 BR 112019023181 A2 BR112019023181 A2 BR 112019023181A2 BR 112019023181 A BR112019023181 A BR 112019023181A BR 112019023181 A BR112019023181 A BR 112019023181A BR 112019023181 A2 BR112019023181 A2 BR 112019023181A2
Authority
BR
Brazil
Prior art keywords
cast iron
converter
blowing
oxygen gas
laval nozzles
Prior art date
Application number
BR112019023181A
Other languages
English (en)
Other versions
BR112019023181B1 (pt
Inventor
Kikuchi Naoki
Amano Shota
Miki Yuji
Takahashi Yukio
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 BR112019023181A2 publication Critical patent/BR112019023181A2/pt
Publication of BR112019023181B1 publication Critical patent/BR112019023181B1/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
    • C21C5/32—Blowing from above
    • 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
    • C21C5/4606—Lances or injectors
    • 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
    • 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

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)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

quando o refino por descarburação de ferro fundido é realizado soprando gás oxigênio pelo topo a partir da lança de sopro de topo, a oscilação de ferro fundido, uma explosão de bolha, e respingos devido à explosão de bolha são suprimidos. um método de refino para um conversor inclui descarburar ferro fundido no conversor com uma lança de sopro de topo tendo bocais de laval dispostos na extremidade inferior da mesma soprando gás oxigênio na superfície do ferro fundido no conversor através dos bocais de laval, em que uma ou ambas dentre uma taxa de alimentação de oxigênio a partir da lança de sopro de topo e altura de lança lh são ajustadas de tal modo que um índice de acúmulo de oxigênio s(f) seja 40 ou menos.
BR112019023181-1A 2017-05-08 2018-05-07 Método para operar um conversor BR112019023181B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2017-092258 2017-05-08
JP2017092258 2017-05-08
PCT/JP2018/017585 WO2018207718A1 (ja) 2017-05-08 2018-05-07 転炉の操業方法

Publications (2)

Publication Number Publication Date
BR112019023181A2 true BR112019023181A2 (pt) 2020-05-19
BR112019023181B1 BR112019023181B1 (pt) 2023-03-28

Family

ID=64104678

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112019023181-1A BR112019023181B1 (pt) 2017-05-08 2018-05-07 Método para operar um conversor

Country Status (9)

Country Link
US (1) US11124849B2 (pt)
EP (1) EP3575419B1 (pt)
JP (1) JP6604460B2 (pt)
KR (1) KR102254941B1 (pt)
CN (1) CN110612356B (pt)
BR (1) BR112019023181B1 (pt)
RU (1) RU2733858C1 (pt)
TW (1) TWI681060B (pt)
WO (1) WO2018207718A1 (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111926138A (zh) * 2020-08-13 2020-11-13 北京首钢自动化信息技术有限公司 一种氧枪高度的控制方法及装置

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SU767214A1 (ru) * 1977-08-05 1980-09-30 За витель , «Шёвд I Устройство дл прогнозировани выбросов металла и шлака из конвертера
JPS5948926B2 (ja) * 1979-02-24 1984-11-29 川崎製鉄株式会社 溶湯容器の造滓制御法
SU1046290A1 (ru) * 1982-03-23 1983-10-07 Сибирский ордена Трудового Красного Знамени металлургический институт им.Серго Орджоникидзе Система управлени конверторной плавкой
US4749171A (en) * 1984-09-06 1988-06-07 Nippon Steel Corporation Method and apparatus for measuring slag-foam conditions within a converter
SU1470774A1 (ru) * 1987-08-11 1989-04-07 Карагандинский металлургический комбинат Способ управлени конвертерным процессом
SU1539211A1 (ru) * 1988-05-30 1990-01-30 Киевский институт автоматики им.ХХУ съезда КПСС Устройство управлени конверторной плавкой
JP2957469B2 (ja) * 1996-04-12 1999-10-04 日本電気移動通信株式会社 携帯型無線電話機
JP2000119725A (ja) 1998-10-07 2000-04-25 Nippon Steel Corp 高生産性転炉製鋼方法
JP2000303114A (ja) * 1999-04-15 2000-10-31 Sumitomo Metal Ind Ltd 溶融金属の精錬方法
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
JP3825733B2 (ja) * 2002-09-25 2006-09-27 新日本製鐵株式会社 溶銑の精錬方法
CN101638707B (zh) * 2009-08-21 2011-07-20 武汉钢铁(集团)公司 转炉炼钢双向供钢供氧方法
JP2011084789A (ja) * 2009-10-16 2011-04-28 Sumitomo Metal Ind Ltd 転炉吹錬方法
CN102399933B (zh) * 2010-09-07 2013-12-11 鞍钢股份有限公司 一种转炉吹炼低碳钢氧枪自动控制方法
CN103890199B (zh) 2011-10-17 2016-01-20 杰富意钢铁株式会社 粉体吹入喷枪和使用该粉体吹入喷枪的熔融铁的精炼方法
JP5686091B2 (ja) 2011-11-24 2015-03-18 新日鐵住金株式会社 転炉の精錬方法
CN102732668B (zh) * 2012-07-05 2014-02-12 北京科技大学 一种预热氧气提高射流速度的吹氧炼钢方法
WO2015079646A1 (ja) 2013-11-28 2015-06-04 Ｊｆｅスチール株式会社 転炉操業監視方法及び転炉操業方法
JP6421732B2 (ja) * 2015-09-17 2018-11-14 Ｊｆｅスチール株式会社 転炉の操業方法
JP6421731B2 (ja) * 2015-09-17 2018-11-14 Ｊｆｅスチール株式会社 転炉の操業方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111926138A (zh) * 2020-08-13 2020-11-13 北京首钢自动化信息技术有限公司 一种氧枪高度的控制方法及装置
CN111926138B (zh) * 2020-08-13 2022-04-12 北京首钢自动化信息技术有限公司 一种氧枪高度的控制方法及装置

Also Published As

Publication number Publication date
RU2733858C1 (ru) 2020-10-07
KR20190137862A (ko) 2019-12-11
CN110612356B (zh) 2021-06-29
US20200157645A1 (en) 2020-05-21
US11124849B2 (en) 2021-09-21
TWI681060B (zh) 2020-01-01
BR112019023181B1 (pt) 2023-03-28
JP6604460B2 (ja) 2019-11-13
JPWO2018207718A1 (ja) 2019-11-07
EP3575419A4 (en) 2019-12-04
EP3575419B1 (en) 2021-09-29
WO2018207718A1 (ja) 2018-11-15
TW201843307A (zh) 2018-12-16
EP3575419A1 (en) 2019-12-04
CN110612356A (zh) 2019-12-24
KR102254941B1 (ko) 2021-05-21

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Legal Events

Date Code Title Description
B350 Update of information on the portal [chapter 15.35 patent gazette]
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 07/05/2018, OBSERVADAS AS CONDICOES LEGAIS