BR9800905A - Processo para injetar gás dentro de um forno contendo um banho que é composto de uma poça de metal em fusão com uma camada de escória sobre sua superfìcie de topo. - Google Patents

Processo para injetar gás dentro de um forno contendo um banho que é composto de uma poça de metal em fusão com uma camada de escória sobre sua superfìcie de topo.

Info

Publication number
BR9800905A
BR9800905A BR9800905-2A BR9800905A BR9800905A BR 9800905 A BR9800905 A BR 9800905A BR 9800905 A BR9800905 A BR 9800905A BR 9800905 A BR9800905 A BR 9800905A
Authority
BR
Brazil
Prior art keywords
molten metal
pool
bath
top surface
layer
Prior art date
Application number
BR9800905-2A
Other languages
English (en)
Inventor
Pravin Chandra Mathur
Ronald Joseph Selines
John Erling Anderson
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25229145&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9800905(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Praxair Technology Inc filed Critical Praxair Technology Inc
Publication of BR9800905A publication Critical patent/BR9800905A/pt

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/22—Arrangements of air or gas supply devices
    • F27B3/225—Oxygen 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
    • C21C5/52—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
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • 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
    • 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
    • C21C5/4613—Refractory coated lances; Immersion lances
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Details (AREA)

Abstract

''PROCESSO PARA INJETAR GáS DENTRO DE UM FORNO CONTENDO UMA BANHO QUE é COMPOSTO DE UMA POçA DE METAL EM FUSãO COM UMA CAMADA DE ESCóRIA SOBRE SUA SUPERFìCIE DE TOPO''. Um processo para efetivamente injetar gás principal dentro de uma poça de metal em fusão, o qual é particularmente útil para o uso em um forno a arco elétrico. O processo emprega combustão de oxigênio secundário com combustível para formar um envelope de chama ao redor de uma corrente de gás principal que protege o gás principal contra a entrada de gases ambientais à medida que ele passa através do espaço confinante do forno, Isto permite que o gás retenha um graus substancial de sua força original sobre a injeção dentro do espaço confinante e deste modo pode ser injetado dentro do forno a uma distência segura da superfície de metal em fusão enquanto que ainda alcança penetração completa dentro do metal em fusão.
BR9800905-2A 1997-03-18 1998-03-16 Processo para injetar gás dentro de um forno contendo um banho que é composto de uma poça de metal em fusão com uma camada de escória sobre sua superfìcie de topo. BR9800905A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81981297A 1997-03-18 1997-03-18

Publications (1)

Publication Number Publication Date
BR9800905A true BR9800905A (pt) 1999-09-28

Family

ID=25229145

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9800905-2A BR9800905A (pt) 1997-03-18 1998-03-16 Processo para injetar gás dentro de um forno contendo um banho que é composto de uma poça de metal em fusão com uma camada de escória sobre sua superfìcie de topo.

Country Status (11)

Country Link
US (1) US6125133A (pt)
EP (1) EP0866139B1 (pt)
JP (1) JP3774319B2 (pt)
KR (1) KR100368518B1 (pt)
CN (1) CN1140760C (pt)
BR (1) BR9800905A (pt)
CA (1) CA2232219C (pt)
DE (1) DE69806290T2 (pt)
ES (1) ES2175544T3 (pt)
ID (1) ID20060A (pt)
ZA (1) ZA987865B (pt)

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US6142764A (en) * 1999-09-02 2000-11-07 Praxair Technology, Inc. Method for changing the length of a coherent jet
US6261338B1 (en) 1999-10-12 2001-07-17 Praxair Technology, Inc. Gas and powder delivery system and method of use
US6139310A (en) * 1999-11-16 2000-10-31 Praxair Technology, Inc. System for producing a single coherent jet
US6241510B1 (en) 2000-02-02 2001-06-05 Praxair Technology, Inc. System for providing proximate turbulent and coherent gas jets
US6250915B1 (en) 2000-03-29 2001-06-26 The Boc Group, Inc. Burner and combustion method for heating surfaces susceptible to oxidation or reduction
US6334976B1 (en) 2000-08-03 2002-01-01 Praxair Technology, Inc. Fluid cooled coherent jet lance
EP1179602A1 (fr) * 2000-08-07 2002-02-13 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procédé d'injection d'un gaz à l'aide d'une tuyère
FR2816324B1 (fr) * 2000-11-09 2003-01-24 Air Liquide Procede d'injection d'un gaz a l'aide d'une tuyere
FR2822939A1 (fr) * 2001-03-29 2002-10-04 Air Liquide Procede d'injection d'oxygene dans un four
US6400747B1 (en) 2001-05-18 2002-06-04 Praxair Technology, Inc. Quadrilateral assembly for coherent jet lancing and post combustion in an electric arc furnace
US6432163B1 (en) * 2001-06-22 2002-08-13 Praxair Technology, Inc. Metal refining method using differing refining oxygen sequence
US6450799B1 (en) 2001-12-04 2002-09-17 Praxair Technology, Inc. Coherent jet system using liquid fuel flame shroud
JP3864092B2 (ja) * 2002-01-10 2006-12-27 東京瓦斯株式会社 難燃性物質分解バーナ
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US6875251B2 (en) * 2002-05-15 2005-04-05 Hatch Ltd. Continuous steelmaking process
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US20050145071A1 (en) * 2003-03-14 2005-07-07 Cates Larry E. System for optically analyzing a molten metal bath
US6932854B2 (en) * 2004-01-23 2005-08-23 Praxair Technology, Inc. Method for producing low carbon steel
WO2005079431A2 (en) * 2004-02-16 2005-09-01 Measurement Technology Laboratories Corporation Particulate filter and method of use
ATE437245T1 (de) * 2004-05-14 2009-08-15 Linde Inc Feinen von schmelzflüssigem metall
US7438848B2 (en) * 2004-06-30 2008-10-21 The Boc Group, Inc. Metallurgical lance
ITMI20050241A1 (it) * 2005-02-18 2006-08-19 Techint Spa Iniettore multifunzione e relativo procedimento di combustione per trattamento metallurgico in un forno ad arco elettrico
GB0511883D0 (en) * 2005-06-10 2005-07-20 Boc Group Plc Manufacture of ferroalloys
US7297180B2 (en) * 2005-07-13 2007-11-20 Praxair Technology, Inc. Method for operating a vacuum vessel with a coherent jet
US8696348B2 (en) * 2006-04-26 2014-04-15 Air Products And Chemicals, Inc. Ultra-low NOx burner assembly
US7452401B2 (en) * 2006-06-28 2008-11-18 Praxair Technology, Inc. Oxygen injection method
US7959708B2 (en) * 2006-12-15 2011-06-14 Praxair Technology, Inc. Injection method for inert gas
ITUD20060277A1 (it) † 2006-12-27 2008-06-28 Danieli Off Mecc Dispositivo e metodo per la misurazione della temperatura del metallo liquido in un forno elettrico
EP2080972A1 (en) * 2008-01-08 2009-07-22 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Combined burner and lance apparatus for electric arc furnaces
US8202470B2 (en) * 2009-03-24 2012-06-19 Fives North American Combustion, Inc. Low NOx fuel injection for an indurating furnace
US8142711B2 (en) * 2009-04-02 2012-03-27 Nu-Core, Inc. Forged copper burner enclosure
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
US20110127701A1 (en) * 2009-11-30 2011-06-02 Grant Michael G K Dynamic control of lance utilizing co-flow fluidic techniques
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
US8992656B2 (en) * 2011-12-21 2015-03-31 Praxair Technology, Inc. Controllable solids injection
DE102014213744A1 (de) * 2014-07-15 2016-01-21 Primetals Technologies Germany Gmbh Elektrischer Lichtbogenofen mit einer Sicherheitsvorrichtung und Verfahren zur Sicherung von Peripheriegeräten an elektrischen Lichtbogenöfen
US10234206B2 (en) 2014-11-05 2019-03-19 Daido Steel Co., Ltd. Electric arc furnace
US10215494B2 (en) 2014-11-05 2019-02-26 Daido Steel Co., Ltd. Method of operating electric arc furnace
FR3037059B1 (fr) * 2015-06-02 2017-06-16 Saint-Gobain Emballage Four a injection sonique
CN106500514B (zh) * 2016-10-19 2019-03-12 嘉峪关宏电铁合金有限责任公司 一种防止矿热炉电极偏斜的方法
CN109628689B (zh) * 2019-02-27 2020-12-04 中冶赛迪工程技术股份有限公司 高铁水比电炉供氧方法
JP7040667B2 (ja) * 2019-11-06 2022-03-23 Ｊｆｅスチール株式会社 電気炉による溶鉄の製造方法
JP7091386B2 (ja) * 2020-04-27 2022-06-27 大陽日酸株式会社 酸素バーナ

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Also Published As

Publication number Publication date
EP0866139A1 (en) 1998-09-23
DE69806290D1 (de) 2002-08-08
ZA987865B (en) 1999-03-02
CN1140760C (zh) 2004-03-03
KR19980080280A (ko) 1998-11-25
JPH10259413A (ja) 1998-09-29
JP3774319B2 (ja) 2006-05-10
CN1198525A (zh) 1998-11-11
CA2232219C (en) 2005-01-11
ES2175544T3 (es) 2002-11-16
CA2232219A1 (en) 1998-09-18
US6125133A (en) 2000-09-26
ID20060A (id) 1998-09-24
DE69806290T2 (de) 2003-03-06
KR100368518B1 (ko) 2003-04-21
EP0866139B1 (en) 2002-07-03

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Legal Events

Date Code Title Description
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B24H Lapse because of non-payment of annual fees (definitively: art 78 iv lpi)
B24F Patent annual fee: publication cancelled

Free format text: ANULADA A PUBLICACAO CODIGO 24.8 NA RPI NO 2257 DE 08/04/2014 POR TER SIDO INDEVIDA.

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

Free format text: REFERENTE AS 15A, 16A, 17A, 18A, 19A E 20A ANUIDADES.

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 2606 DE 15-12-2020 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.