ES2143547T3 - STEEL MANUFACTURING METHOD USING DEPHOSPHORIZATION IN CONVERTER. - Google Patents

STEEL MANUFACTURING METHOD USING DEPHOSPHORIZATION IN CONVERTER.

Info

Publication number
ES2143547T3
ES2143547T3 ES94919835T ES94919835T ES2143547T3 ES 2143547 T3 ES2143547 T3 ES 2143547T3 ES 94919835 T ES94919835 T ES 94919835T ES 94919835 T ES94919835 T ES 94919835T ES 2143547 T3 ES2143547 T3 ES 2143547T3
Authority
ES
Spain
Prior art keywords
dephosphorization
blows
speed
converter
gas
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
ES94919835T
Other languages
Spanish (es)
Inventor
Masataka Yano
Yuji Ogawa
Masayuki Arai
Fumio Koizumi
Noriyuki Masumitsu
Hideaki Sasaki
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=ES2143547(T3) "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/en
Priority claimed from JP32908693A external-priority patent/JP2896838B2/en
Priority claimed from JP32908893A external-priority patent/JP2958848B2/en
Priority claimed from JP01102794A external-priority patent/JP3239197B2/en
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Application granted granted Critical
Publication of ES2143547T3 publication Critical patent/ES2143547T3/en
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

Abstract

SE PRESENTA UN METODO PARA LLEVAR A CABO DE FORMA EFICIENTE LA DESFOSFORIZACION, DESFOSFORIZACION-DESCARBONIZACION, O LA DESULFURIZACION-DESFOSFORIZACION-DESCARBONIZACION DEL HIERRO FUNDIDO EN UN CONVERTIDOR. LA VELOCIDAD DE SUMINISTRO DEL FLUJO Y DE UN GAS QUE FLUYE DESDE EL FONDO SE REGULAN DE MANERA QUE LA ENERGIA DE AGITACION PRODUCIDA POR EL GAS NO SEA INFERIOR A 0.1 KW/T, PUEDEN OBTENERSE UN CAO/SIO{SUB,2} DE PASTA TRATADA DE 0.72.5, Y A UNA TEMPERATURA EN UN PUNTO TERMINAL DE TRATAMIENTO DE 1200-1450 (GRADOS) C. LA OPERACION DE CONTROL SE LLEVA CABO DE MANERA QUE LA SUMA DE LA CONCENTRACION DE T.FE Y LA DE MNO EN LA PASTA TRATADA SEA ENTRE UN 10% Y UN 35% DEL PESO, REGULANDO UNA VELOCIDAD DE SUMINISTRO DEL ACIDO QUE SOPLA HACIA LA PARTE SUPERIOR, UNA VELOCIDAD DE FLUJO EN EL GAS QUE SOPLA DESDE EL FONDO, O LA ALTURA DE LA LANZA QUE SOPLA HACIA LA PARTE SUPERIOR.A METHOD FOR EFFICIENTLY CONDUCTING DEPHOSPHORIZATION, DEPHOSPHORIZATION-DECARBONIZATION, OR DEULFURIZATION-DEPHOSPHORIZATION-DECARBONIZATION OF CAST IRON IN A CONVERTER IS PRESENTED. THE SPEED OF SUPPLY OF THE FLOW AND OF A GAS FLOWING FROM THE FUND ARE REGULATED SO THAT THE AGITATION ENERGY PRODUCED BY THE GAS IS NOT LESS THAN 0.1 KW / T, MAY BE OBTAINED A CAO / SIO {SUB, 2} OF PASTA TREATY OF 0.72.5, AND AT A TEMPERATURE AT A TREATMENT TERMINAL POINT OF 1200-1450 (DEGREES) C. THE CONTROL OPERATION IS CARRIED OUT SO THAT THE SUM OF THE CONCENTRATION OF T.FE AND THAT OF MNO IN THE PASTA TREATED BETWEEN 10% AND 35% OF THE WEIGHT, REGULATING A SPEED OF SUPPLY OF THE ACID THAT BLOWS TO THE TOP, A FLOW SPEED IN THE GAS THAT BLOWS FROM THE BOTTOM, OR THE HEIGHT OF THE Lance THAT BLOWS TOWARD THE UPPER PART.

ES94919835T 1993-06-30 1994-06-30 STEEL MANUFACTURING METHOD USING DEPHOSPHORIZATION IN CONVERTER. Expired - Lifetime ES2143547T3 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP16256493A JP2958842B2 (en) 1993-06-30 1993-06-30 Converter refining method
JP16579093 1993-07-05
JP32908693A JP2896838B2 (en) 1993-12-24 1993-12-24 Molten steel manufacturing method
JP32908893A JP2958848B2 (en) 1993-12-24 1993-12-24 Hot metal dephosphorization method
JP01102794A JP3239197B2 (en) 1993-07-05 1994-02-02 Converter steelmaking method
PCT/JP1994/001070 WO1995001458A1 (en) 1993-06-30 1994-06-30 Steel manufacturing method using converter

Publications (1)

Publication Number Publication Date
ES2143547T3 true ES2143547T3 (en) 2000-05-16

Family

ID=27519242

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94919835T Expired - Lifetime ES2143547T3 (en) 1993-06-30 1994-06-30 STEEL MANUFACTURING METHOD USING DEPHOSPHORIZATION IN CONVERTER.

Country Status (9)

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

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3940280B2 (en) * 2001-09-27 2007-07-04 新日本製鐵株式会社 How to remove hot metal
JP3854482B2 (en) * 2001-09-27 2006-12-06 新日本製鐵株式会社 Hot metal pretreatment method and refining method
DE10215839A1 (en) * 2002-04-10 2003-11-06 Sms Demag Ag Method and device for producing carbon steels or stainless steels by refining phosphorus-rich pig iron in an electric arc furnace or in a converter vessel
DE10215828B4 (en) * 2002-04-10 2007-08-02 Sms Demag Ag Method and device for producing stainless steel, in particular chromium- or chromium-nickel-containing stainless steel
EP1608652A1 (en) * 2003-03-31 2005-12-28 Vernalis (Cambridge) Limited Pyrazolopyrimidine compounds and their use in medicine
EP1524322A3 (en) * 2003-10-15 2006-08-02 Milan Adelt Method of liquid steel production with slag recycling in a converter, equipment to employ the method
KR100749023B1 (en) * 2006-05-26 2007-08-14 주식회사 포스코 Method for refining extra low phosphorous steel in converter
CN101864508B (en) * 2010-07-02 2012-10-24 张觉灵 Steel making method of convertor with small slag quantity
CN102071277B (en) * 2010-12-23 2012-10-24 攀钢集团钢铁钒钛股份有限公司 Converter dephosphorizing and steelmaking method
CN102168160B (en) * 2011-03-08 2013-04-17 武汉钢铁(集团)公司 Converter steelmaking technology for directly reducing-alloying manganese ore
JP5979017B2 (en) * 2012-01-19 2016-08-24 Ｊｆｅスチール株式会社 Hot metal refining method
WO2014112521A1 (en) * 2013-01-18 2014-07-24 Ｊｆｅスチール株式会社 Molten iron pre-treatment method
CN104451022B (en) * 2014-12-19 2016-03-16 山东钢铁股份有限公司 A kind of method reducing dephosphorization stove finishing slag all iron content
KR101660774B1 (en) 2015-07-09 2016-09-28 주식회사 포스코 The converter operation method
KR20180019745A (en) * 2016-01-28 2018-02-26 신닛테츠스미킨 카부시키카이샤 Disposal method, manufacturing method of slag and energy damping structure of slag
CN108779506B (en) * 2016-07-14 2023-07-25 日本制铁株式会社 Method for estimating phosphorus concentration in molten steel and converter blowing control device
CN106282487B (en) * 2016-09-13 2019-03-29 北京北科中钢工程技术有限公司 A kind of pre-dephosporizing method for molten iron
CN110621793A (en) * 2017-05-25 2019-12-27 杰富意钢铁株式会社 Smelting method of high manganese steel
CN109097523B (en) * 2018-08-31 2019-12-24 钢铁研究总院 Double-slag smelting process
CN114438276B (en) * 2022-02-11 2022-08-09 山东钢铁集团永锋临港有限公司 Method for shortening smelting period of converter

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 (en) * 1982-05-28 1983-12-02 Sumitomo Metal Ind Ltd Refining method of steel
DE3316367A1 (en) * 1983-05-05 1984-11-08 Mannesmann AG, 4000 Düsseldorf METHOD AND DEVICE FOR PRODUCING STEEL
FR2558482B1 (en) * 1984-01-25 1989-10-27 Siderurgie Fse Inst Rech PROCESS FOR THE PREPARATION OF STEEL BY CAST IRON
JPH0472007A (en) * 1990-07-10 1992-03-06 Nippon Steel Corp Production of molten steel
JP2607328B2 (en) * 1992-03-04 1997-05-07 新日本製鐵株式会社 Hot metal dephosphorization method
JP2607329B2 (en) * 1992-03-04 1997-05-07 新日本製鐵株式会社 Hot metal dephosphorization method

Also Published As

Publication number Publication date
EP0714989A1 (en) 1996-06-05
EP0714989B1 (en) 2000-03-22
WO1995001458A1 (en) 1995-01-12
CN1128050A (en) 1996-07-31
AU680268B2 (en) 1997-07-24
DE69423630T2 (en) 2000-11-09
EP0714989A4 (en) 1997-06-25
CN1041843C (en) 1999-01-27
CA2166097C (en) 2002-01-15
AU7083194A (en) 1995-01-24
KR0159180B1 (en) 1999-01-15
KR960703440A (en) 1996-08-17
DE69423630D1 (en) 2000-04-27
CA2166097A1 (en) 1995-01-12
BR9406985A (en) 1996-03-05

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