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WO2016012003A1 - Procédé de décarburation de fonte de nickel (npi) dans le convertisseur à dao - Google Patents

Procédé de décarburation de fonte de nickel (npi) dans le convertisseur à dao Download PDF

Info

Publication number
WO2016012003A1
WO2016012003A1 PCT/DE2015/100290 DE2015100290W WO2016012003A1 WO 2016012003 A1 WO2016012003 A1 WO 2016012003A1 DE 2015100290 W DE2015100290 W DE 2015100290W WO 2016012003 A1 WO2016012003 A1 WO 2016012003A1
Authority
WO
WIPO (PCT)
Prior art keywords
decarburization
npi
pig iron
oxygen
melt
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/DE2015/100290
Other languages
German (de)
English (en)
Inventor
Johann Reichel
Lutz Rose
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
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 SMS Group GmbH filed Critical SMS Group GmbH
Priority to BR112017001158A priority Critical patent/BR112017001158A2/pt
Priority to EP15781571.3A priority patent/EP3172344A1/fr
Publication of WO2016012003A1 publication Critical patent/WO2016012003A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/04—Removing impurities other than carbon, phosphorus or sulfur
    • 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
    • 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

Definitions

  • the invention relates to a process for nickel pig iron (NPI) decarburization
  • the quality of these materials usually requires an aftertreatment.
  • the object of the invention is to improve the economics of decarburization of nickel pig iron (NPI) in the AOD converter.
  • the invention relates to a method for nickel pig Iran decarburization in an AOO converter, wherein a mixture consisting of oxygen and carbon dioxide is fed to the melt.
  • the oxygen is preferably inflated onto the melt, while the carbon dioxide is blown into the melt.
  • the CO 2 is injected through submerged nozzles in the molten metal.
  • Temperature development is not kept with species-specific material and enormous amounts of slag formers in temperature-friendly range, but with an oxygen / carbon dioxide mixture, which has the property of both conditions.
  • thermal dissociation yields another atom of oxygen and increases the reaction rate by 50%.
  • 80 kWh / t of melt correspond to: 0.2 1 LC NPI or 37.4 Nm3 C02
  • C02 thus means a significant increase in production of up to 20%. and a shortening of the refining time by a minimum of 30%.

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)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

La présente invention concerne un procédé de décarburation de fonte de nickel (Nickel Pig Iron) dans le convertisseur à DAO, un mélange d'oxygène et de dioxyde de carbone étant cédé à la masse en fusion.
PCT/DE2015/100290 2014-07-23 2015-07-09 Procédé de décarburation de fonte de nickel (npi) dans le convertisseur à dao Ceased WO2016012003A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR112017001158A BR112017001158A2 (pt) 2014-07-23 2015-07-09 processo para descarbonização de ferro gusa de níquel (níckel pig iron (npi)) no conversor aod
EP15781571.3A EP3172344A1 (fr) 2014-07-23 2015-07-09 Procédé de décarburation de fonte de nickel (npi) dans le convertisseur à dao

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014011231.4A DE102014011231A1 (de) 2014-07-23 2014-07-23 Verfahren zur Nickel Pig Iron (NPI)- Entkohlung im AOD -Konverter
DE102014011231.4 2014-07-23

Publications (1)

Publication Number Publication Date
WO2016012003A1 true WO2016012003A1 (fr) 2016-01-28

Family

ID=54330566

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2015/100290 Ceased WO2016012003A1 (fr) 2014-07-23 2015-07-09 Procédé de décarburation de fonte de nickel (npi) dans le convertisseur à dao

Country Status (4)

Country Link
EP (1) EP3172344A1 (fr)
BR (1) BR112017001158A2 (fr)
DE (1) DE102014011231A1 (fr)
WO (1) WO2016012003A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116536472A (zh) * 2023-03-24 2023-08-04 湖南华菱涟源钢铁有限公司 用于转炉冶炼含镍钢水的方法和含镍钢水

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1964092A1 (de) 1968-12-23 1970-07-02 Int Nickel Ltd Verfahren zum Erschmelzen einer niedriggekohlten Nickel-Chrom-Eisen-Legierung
DE2525355A1 (de) 1974-06-07 1975-12-18 British Steel Corp Verfahren und vorrichtung zum frischen von eisen
SU624923A1 (ru) * 1977-03-14 1978-08-08 Центральный Ордена Трудового Красного Знамени Институт Черной Металлургии Имени И.П.Бардина Способ производства стали
EP0005506A1 (fr) * 1978-05-11 1979-11-28 BASF Aktiengesellschaft Procédé de traitement de bains de fonte brute et d'acier ou d'alliages d'acier
US4555266A (en) * 1981-10-05 1985-11-26 Korf Technologies, Inc. Method and apparatus for treating liquid metal in a vessel
EP0392239A1 (fr) * 1989-04-13 1990-10-17 Messer Griesheim Gmbh Procédé de fabrication de nuances d'aciers alliés
DE69020596T2 (de) 1989-02-21 1996-01-18 Nippon Kokan Kk Verfahren zur Schmelzreduktion von Nickelerzen.
DE19608530C2 (de) 1996-02-09 1999-01-14 Eisenbau Essen Gmbh Verwendung von reinem CO¶2¶-Gas oder einem im wesentlichen CO¶2¶ enthaltenden Gas als Trägergas bei der Behandlung von Stahl in einem Lichtbogenofen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA909149B (en) * 1989-06-02 1991-12-24 Cra Services Manufacture of ferroalloys using a molten bath reactor
US5749939A (en) * 1996-12-04 1998-05-12 Armco Inc. Melting of NI laterite in making NI alloyed iron or steel
CN102312035A (zh) * 2011-07-07 2012-01-11 山西太钢不锈钢股份有限公司 一种使用铬镍生铁生产高强度耐候钢的冶炼方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1964092A1 (de) 1968-12-23 1970-07-02 Int Nickel Ltd Verfahren zum Erschmelzen einer niedriggekohlten Nickel-Chrom-Eisen-Legierung
DE2525355A1 (de) 1974-06-07 1975-12-18 British Steel Corp Verfahren und vorrichtung zum frischen von eisen
SU624923A1 (ru) * 1977-03-14 1978-08-08 Центральный Ордена Трудового Красного Знамени Институт Черной Металлургии Имени И.П.Бардина Способ производства стали
EP0005506A1 (fr) * 1978-05-11 1979-11-28 BASF Aktiengesellschaft Procédé de traitement de bains de fonte brute et d'acier ou d'alliages d'acier
US4555266A (en) * 1981-10-05 1985-11-26 Korf Technologies, Inc. Method and apparatus for treating liquid metal in a vessel
DE69020596T2 (de) 1989-02-21 1996-01-18 Nippon Kokan Kk Verfahren zur Schmelzreduktion von Nickelerzen.
EP0392239A1 (fr) * 1989-04-13 1990-10-17 Messer Griesheim Gmbh Procédé de fabrication de nuances d'aciers alliés
DE19608530C2 (de) 1996-02-09 1999-01-14 Eisenbau Essen Gmbh Verwendung von reinem CO¶2¶-Gas oder einem im wesentlichen CO¶2¶ enthaltenden Gas als Trägergas bei der Behandlung von Stahl in einem Lichtbogenofen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3172344A1

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116536472A (zh) * 2023-03-24 2023-08-04 湖南华菱涟源钢铁有限公司 用于转炉冶炼含镍钢水的方法和含镍钢水

Also Published As

Publication number Publication date
EP3172344A1 (fr) 2017-05-31
BR112017001158A2 (pt) 2017-11-14
DE102014011231A1 (de) 2016-01-28

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