CA2166097C - Procede de production d'acier au convertisseur - Google Patents

Procede de production d'acier au convertisseur Download PDF

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Publication number
CA2166097C
CA2166097C CA002166097A CA2166097A CA2166097C CA 2166097 C CA2166097 C CA 2166097C CA 002166097 A CA002166097 A CA 002166097A CA 2166097 A CA2166097 A CA 2166097A CA 2166097 C CA2166097 C CA 2166097C
Authority
CA
Canada
Prior art keywords
slag
molten iron
converter
dephosphorization
decarbonizing
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.)
Expired - Lifetime
Application number
CA002166097A
Other languages
English (en)
Other versions
CA2166097A1 (fr
Inventor
Masataka Yano
Yuji Ogawa
Masayuki Arai
Fumio Koizumi
Noriyuki Masumitsu
Hideaki Sasaki
Hiroshi Hirata
Yoshiaki Kusano
Hirobumi Maede (Deceased)
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.)
Nippon Steel Corp
Original Assignee
Nippon 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27519242&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2166097(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from JP16256493A external-priority patent/JP2958842B2/ja
Priority claimed from JP32908893A external-priority patent/JP2958848B2/ja
Priority claimed from JP32908693A external-priority patent/JP2896838B2/ja
Priority claimed from JP01102794A external-priority patent/JP3239197B2/ja
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of CA2166097A1 publication Critical patent/CA2166097A1/fr
Application granted granted Critical
Publication of CA2166097C publication Critical patent/CA2166097C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • C21C5/34—Blowing through the bath
    • 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
    • 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
    • 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
    • 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
    • C21C5/56—Manufacture of steel by other methods
    • C21C5/567—Manufacture of steel by other methods operating in a continuous way
    • 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
    • C21C7/064—Dephosphorising; 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0028—Regulation
    • F27D2019/0075—Regulation of the charge quantity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0028—Regulation
    • F27D2019/0078—Regulation of the speed of the gas through the charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D27/00—Stirring devices for molten material
    • F27D2027/002—Gas stirring

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)

Abstract

L'invention concerne un procédé efficace de déphosphoration, de déphosphoration-décarburation, ou de désulfuration-déphosphoration-décarburation de fer en fusion dans un convertisseur. Les débits d'alimentation en fondant et en gaz insufflé par le bas sont régulées de manière à obtenir une puissance d'agitation sous l'effet du gaz insufflé par le bas d'au moins 0,1 kW/t, un CaO/SiO2 de scories traitées de 0,7 à 2,5, et une température en un point terminal de traitement de 1200 DEG C à 1450 DEG C. Une opération de régulation est ensuite effectuée de sorte que la somme de la concentration de T.Fe et de MnO dans les scories traitées soit égale à 10-35 % en poids par régulation du débit d'alimentation en acide insufflé par le haut, du débit du gaz insufflé par le bas ou de la hauteur de la lance d'insufflation par le haut.
CA002166097A 1993-06-30 1994-06-30 Procede de production d'acier au convertisseur Expired - Lifetime CA2166097C (fr)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP16256493A JP2958842B2 (ja) 1993-06-30 1993-06-30 転炉精錬方法
JP5-162564 1993-06-30
JP16579093 1993-07-05
JP5-165790 1993-07-05
JP32908893A JP2958848B2 (ja) 1993-12-24 1993-12-24 溶銑の脱りん方法
JP32908693A JP2896838B2 (ja) 1993-12-24 1993-12-24 溶鋼製造法
JP5-329086 1993-12-24
JP01102794A JP3239197B2 (ja) 1993-07-05 1994-02-02 転炉製鋼法
PCT/JP1994/001070 WO1995001458A1 (fr) 1993-06-30 1994-06-30 Procede de production et d'acier au moyen d'un convertisseur

Publications (2)

Publication Number Publication Date
CA2166097A1 CA2166097A1 (fr) 1995-01-12
CA2166097C true CA2166097C (fr) 2002-01-15

Family

ID=27519242

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002166097A Expired - Lifetime CA2166097C (fr) 1993-06-30 1994-06-30 Procede de production d'acier au convertisseur

Country Status (9)

Country Link
EP (1) EP0714989B1 (fr)
KR (1) KR0159180B1 (fr)
CN (1) CN1041843C (fr)
AU (1) AU680268B2 (fr)
BR (1) BR9406985A (fr)
CA (1) CA2166097C (fr)
DE (1) DE69423630T2 (fr)
ES (1) ES2143547T3 (fr)
WO (1) WO1995001458A1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3940280B2 (ja) * 2001-09-27 2007-07-04 新日本製鐵株式会社 溶銑の脱りん方法
JP3854482B2 (ja) * 2001-09-27 2006-12-06 新日本製鐵株式会社 溶銑の予備処理方法及び精錬方法
DE10215828B4 (de) * 2002-04-10 2007-08-02 Sms Demag Ag Verfahren und Einrichtung zum Erzeugen von nichtrostendem Stahl, insbesondere von chrom- oder chromnickelhaltigem Edelstahl
DE10215839A1 (de) * 2002-04-10 2003-11-06 Sms Demag Ag Verfahren und Einrichtung zum Erzeugen von C-Stählen oder nichtrostenden Stählen durch Frischen von phosphorreichem Roheisen im Elektrolichtbogen-Ofen oder im Konverter-Gefäß
US20070179161A1 (en) * 2003-03-31 2007-08-02 Vernalis (Cambridge) Limited. Pyrazolopyrimidine compounds and their use in medicine
EP1524322A3 (fr) * 2003-10-15 2006-08-02 Milan Adelt Procédé de production d'acier liquide en recyclage de laitiers dans le convertisseur, et equipement pour mettre en oeuvre ce procédé
KR100749023B1 (ko) * 2006-05-26 2007-08-14 주식회사 포스코 극저린강의 전로 정련 방법
CN101864508B (zh) * 2010-07-02 2012-10-24 张觉灵 小渣量转炉炼钢方法
CN102071277B (zh) * 2010-12-23 2012-10-24 攀钢集团钢铁钒钛股份有限公司 一种转炉脱磷炼钢方法
CN102168160B (zh) * 2011-03-08 2013-04-17 武汉钢铁(集团)公司 使锰矿直接还原合金化的转炉炼钢工艺
JP5979017B2 (ja) * 2012-01-19 2016-08-24 Ｊｆｅスチール株式会社 溶銑の精錬方法
KR101701658B1 (ko) * 2013-01-18 2017-02-01 제이에프이 스틸 가부시키가이샤 용선의 예비 처리 방법
CN104451022B (zh) * 2014-12-19 2016-03-16 山东钢铁股份有限公司 一种降低脱磷炉终渣全铁含量的方法
KR101660774B1 (ko) 2015-07-09 2016-09-28 주식회사 포스코 전로 조업 방법
CN107849626B (zh) * 2016-01-28 2020-02-21 日本制铁株式会社 排渣方法、炉渣的制造方法及流下炉渣的能量衰减结构
JP6573035B2 (ja) * 2016-07-14 2019-09-11 日本製鉄株式会社 溶鋼中りん濃度推定方法及び転炉吹錬制御装置
CN106282487B (zh) * 2016-09-13 2019-03-29 北京北科中钢工程技术有限公司 一种铁水预脱磷方法
CN110621793A (zh) * 2017-05-25 2019-12-27 杰富意钢铁株式会社 高锰钢的熔炼方法
CN109097523B (zh) * 2018-08-31 2019-12-24 钢铁研究总院 一种双渣法冶炼工艺
US20230313330A1 (en) * 2020-09-10 2023-10-05 Jfe Steel Corporation Method for manufacturing low-phosphorus molten steel
CN114438276B (zh) * 2022-02-11 2022-08-09 山东钢铁集团永锋临港有限公司 一种缩短转炉冶炼周期的方法
CN114647220A (zh) * 2022-03-15 2022-06-21 山东钢铁集团永锋临港有限公司 一种转炉冶炼自动控制的方法
CN119460521B (zh) * 2024-11-05 2025-11-25 北京首钢股份有限公司 一种倒罐站加料装置和加料方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6823981A (en) * 1980-03-21 1981-10-15 Nippon Steel Corporation Multi-stage steel making
JPS58207314A (ja) * 1982-05-28 1983-12-02 Sumitomo Metal Ind Ltd 鋼の精錬方法
DE3316367A1 (de) * 1983-05-05 1984-11-08 Mannesmann AG, 4000 Düsseldorf Verfahren und einrichtung zum erzeugen von stahl
FR2558482B1 (fr) * 1984-01-25 1989-10-27 Siderurgie Fse Inst Rech Procede d'elaboration de l'acier par preaffinage de la fonte
JPH0472007A (ja) * 1990-07-10 1992-03-06 Nippon Steel Corp 溶鋼製造法
JP2607329B2 (ja) * 1992-03-04 1997-05-07 新日本製鐵株式会社 溶銑の脱りん方法
JP2607328B2 (ja) * 1992-03-04 1997-05-07 新日本製鐵株式会社 溶銑の脱りん方法

Also Published As

Publication number Publication date
WO1995001458A1 (fr) 1995-01-12
EP0714989B1 (fr) 2000-03-22
DE69423630T2 (de) 2000-11-09
KR960703440A (ko) 1996-08-17
BR9406985A (pt) 1996-03-05
CA2166097A1 (fr) 1995-01-12
EP0714989A4 (fr) 1997-06-25
KR0159180B1 (ko) 1999-01-15
AU680268B2 (en) 1997-07-24
CN1128050A (zh) 1996-07-31
AU7083194A (en) 1995-01-24
DE69423630D1 (de) 2000-04-27
ES2143547T3 (es) 2000-05-16
EP0714989A1 (fr) 1996-06-05
CN1041843C (zh) 1999-01-27

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Effective date: 20140630