BRPI0506964A - método para produzir aço de baixo teor em carbono - Google Patents

método para produzir aço de baixo teor em carbono

Info

Publication number
BRPI0506964A
BRPI0506964A BRPI0506964-5A BRPI0506964A BRPI0506964A BR PI0506964 A BRPI0506964 A BR PI0506964A BR PI0506964 A BRPI0506964 A BR PI0506964A BR PI0506964 A BRPI0506964 A BR PI0506964A
Authority
BR
Brazil
Prior art keywords
carbon steel
stage
low carbon
produce low
enveloped
Prior art date
Application number
BRPI0506964-5A
Other languages
English (en)
Inventor
Michael Francis Riley
William John Mahoney
Original Assignee
Praxair Technology Inc
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 Praxair Technology Inc filed Critical Praxair Technology Inc
Publication of BRPI0506964A publication Critical patent/BRPI0506964A/pt
Publication of BRPI0506964B1 publication Critical patent/BRPI0506964B1/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
    • 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • 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
    • C21C5/4606—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
    • C21C2300/00—Process aspects
    • C21C2300/02—Foam creation
    • 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
    • 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)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

MéTODO PARA PRODUZIR AçO DE BAIXO TEOR EM CARBONO Um método para produzir aço de baixo teor em carbono no qual aço fundido é descarburado em um procedimento de refino de três estágios compreendendo um primeiro estágio no qual oxigênio é proporcionado para descarburação envelopado em um protetor de gás, um segundo estágio no qual oxigênio é proporcionado para descarburação envelopado em um protetor de chama, e um terceiro estágio no qual gás inerte ou oxigênio e gás inerte é proporcionado envelopado em um protetor de chama.
BRPI0506964-5A 2004-01-23 2005-01-19 Método para produzir aço de baixo teor em carbono BRPI0506964B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/762,298 US6932854B2 (en) 2004-01-23 2004-01-23 Method for producing low carbon steel
US10/762,298 2004-01-23
PCT/US2005/002102 WO2005069977A2 (en) 2004-01-23 2005-01-19 Method for producing low carbon steel

Publications (2)

Publication Number Publication Date
BRPI0506964A true BRPI0506964A (pt) 2007-07-03
BRPI0506964B1 BRPI0506964B1 (pt) 2015-08-04

Family

ID=34794850

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0506964-5A BRPI0506964B1 (pt) 2004-01-23 2005-01-19 Método para produzir aço de baixo teor em carbono

Country Status (15)

Country Link
US (1) US6932854B2 (pt)
EP (1) EP1721017B1 (pt)
JP (1) JP4938464B2 (pt)
KR (1) KR101165104B1 (pt)
CN (1) CN100507014C (pt)
AU (1) AU2005207009A1 (pt)
BR (1) BRPI0506964B1 (pt)
CA (1) CA2555472C (pt)
ES (1) ES2405998T3 (pt)
MX (1) MXPA06008215A (pt)
PL (1) PL1721017T3 (pt)
PT (1) PT1721017E (pt)
TW (1) TWI333981B (pt)
WO (1) WO2005069977A2 (pt)
ZA (1) ZA200605710B (pt)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007537355A (ja) * 2004-05-14 2007-12-20 ザ・ビーオーシー・グループ・インコーポレーテッド 溶融金属の精錬
BRPI0720287B1 (pt) * 2006-12-15 2017-05-09 Praxair Technology Inc método de injetar gás inerte no banho localizado dentro de um forno metalúrgico tendo uma atmosfera de forno aquecida.
DE102008050599B3 (de) * 2008-10-09 2010-07-29 Uhde Gmbh Vorrichtung und Verfahren zur Verteilung von Primärluft in Koksöfen
US8377372B2 (en) * 2009-11-30 2013-02-19 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dynamic lances utilizing fluidic techniques
US20110127701A1 (en) * 2009-11-30 2011-06-02 Grant Michael G K Dynamic control of lance utilizing co-flow fluidic techniques
US8323558B2 (en) * 2009-11-30 2012-12-04 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dynamic control of lance utilizing counterflow fluidic techniques
US10781499B2 (en) * 2018-01-17 2020-09-22 Air Products And Chemicals, Inc. Bottom stirring tuyere and method for a basic oxygen furnace

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5526685B2 (pt) 1973-11-26 1980-07-15
CA1092828A (en) * 1978-10-18 1981-01-06 William E. Creswick Basic oxygen furnace argon refining blow
US4373949A (en) 1979-02-07 1983-02-15 Union Carbide Corporation Method for increasing vessel lining life for basic oxygen furnaces
US4397685A (en) 1982-03-26 1983-08-09 Union Carbide Corporation Production of ultra low carbon steel by the basic oxygen process
US4599107A (en) * 1985-05-20 1986-07-08 Union Carbide Corporation Method for controlling secondary top-blown oxygen in subsurface pneumatic steel refining
JPH01123016A (ja) * 1987-11-06 1989-05-16 Nkk Corp 転炉吹錬法
JPH07331315A (ja) 1994-06-02 1995-12-19 Nippon Steel Corp 極低炭素鋼の転炉精錬方法
US5814125A (en) 1997-03-18 1998-09-29 Praxair Technology, Inc. Method for introducing gas into a liquid
US6125133A (en) 1997-03-18 2000-09-26 Praxair, Inc. Lance/burner for molten metal furnace
US6176894B1 (en) 1998-06-17 2001-01-23 Praxair Technology, Inc. Supersonic coherent gas jet for providing gas into a liquid
CN1250747C (zh) * 1998-08-28 2006-04-12 沃斯特－阿尔派因工业设备制造有限公司 生产金属熔液的方法和所用的多功能喷枪
WO2000056585A2 (de) 1999-03-22 2000-09-28 Continental Teves Ag & Co. Ohg Schaltungsanordnung und verfahren zur konfiguration einer schnittstelle von einer steuerungs- oder regelungseinrichtung
US6171544B1 (en) * 1999-04-02 2001-01-09 Praxair Technology, Inc. Multiple coherent jet lance
US6241510B1 (en) 2000-02-02 2001-06-05 Praxair Technology, Inc. System for providing proximate turbulent and coherent gas jets
US6432163B1 (en) 2001-06-22 2002-08-13 Praxair Technology, Inc. Metal refining method using differing refining oxygen sequence
US6604937B1 (en) * 2002-05-24 2003-08-12 Praxair Technology, Inc. Coherent jet system with single ring flame envelope
GB0213376D0 (en) * 2002-06-11 2002-07-24 Boc Group Plc Refining ferroalloys
US6773484B2 (en) * 2002-06-26 2004-08-10 Praxair Technology, Inc. Extensionless coherent jet system with aligned flame envelope ports
US6875398B2 (en) * 2003-01-15 2005-04-05 Praxair Technology, Inc. Coherent jet system with outwardly angled flame envelope ports

Also Published As

Publication number Publication date
ES2405998T3 (es) 2013-06-04
AU2005207009A1 (en) 2005-08-04
TWI333981B (en) 2010-12-01
EP1721017A2 (en) 2006-11-15
EP1721017B1 (en) 2013-04-24
PL1721017T3 (pl) 2013-09-30
JP4938464B2 (ja) 2012-05-23
CN100507014C (zh) 2009-07-01
KR101165104B1 (ko) 2012-07-12
US20050160876A1 (en) 2005-07-28
WO2005069977A2 (en) 2005-08-04
BRPI0506964B1 (pt) 2015-08-04
MXPA06008215A (es) 2006-09-06
US6932854B2 (en) 2005-08-23
CA2555472A1 (en) 2005-08-04
ZA200605710B (en) 2008-01-30
EP1721017A4 (en) 2010-01-20
JP2007518883A (ja) 2007-07-12
PT1721017E (pt) 2013-07-26
KR20060130124A (ko) 2006-12-18
WO2005069977A3 (en) 2006-02-23
CA2555472C (en) 2009-04-21
CN1910295A (zh) 2007-02-07
TW200525041A (en) 2005-08-01

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Legal Events

Date Code Title Description
B07A Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 04/08/2015, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 16A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2614 DE 09-02-2021 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.