BR112015008720A2 - method for refining hot metal - Google Patents

method for refining hot metal

Info

Publication number
BR112015008720A2
BR112015008720A2 BR112015008720A BR112015008720A BR112015008720A2 BR 112015008720 A2 BR112015008720 A2 BR 112015008720A2 BR 112015008720 A BR112015008720 A BR 112015008720A BR 112015008720 A BR112015008720 A BR 112015008720A BR 112015008720 A2 BR112015008720 A2 BR 112015008720A2
Authority
BR
Brazil
Prior art keywords
refining furnace
refining
hot metal
decarbonization
pretreatment
Prior art date
Application number
BR112015008720A
Other languages
Portuguese (pt)
Other versions
BR112015008720B1 (en
Inventor
Yamamoto Kazuhito
Tanaka Kotaro
Koge Masayuki
Takiguchi Mitsuaki
Kawabata Ryo
Ozawa Sumito
Maeda Takahiko
Ishige Toshiro
Original Assignee
Jfe 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
Application filed by Jfe Steel Corp filed Critical Jfe Steel Corp
Publication of BR112015008720A2 publication Critical patent/BR112015008720A2/en
Publication of BR112015008720B1 publication Critical patent/BR112015008720B1/en

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
    • 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
    • C21C5/562—Manufacture of steel by other methods starting from scrap
    • 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)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

resumo patente de invenção: "método para refinar metal quente". a presente invenção refere-se, ao fabricar aço fundido a partir de metal quente com o uso de um forno de refino do tipo conversor de duas bases e com o uso de um forno de refino de pré-tratamento de metal quente e o outro como um forno de refino de descarbonização de metal quente, à escória fundida gerada no forno de refino de descarbonização que é usada enquanto ainda está quente como um agente de refino no forno de refino de pré-tratamento sem comprometer as produtividades dos dois fornos de refino. um método de refino para fabricar aço fundido a partir de metal quente usando um forno de refino do tipo conversor com pelo menos duas bases e usando um como um forno de refino de pré-tratamento de metal quente (14) e usando o outro como um forno de refino de descarbonização (3) para o metal quente (2) pré-tratado no forno de refino de pré-tratamento. após o aço fundido (5) obtido através de refino de descarbonização no forno de refino de descarbonização ter sido vazado em uma panela de fundição (7), a escória (9) remanescente no interior do forno de refino de descarbonização é permitida defluir, ainda no estado fundido, a partir de cima de sucata de metais ferrosos empilhadas para solidificar pelo menos uma porção da escória. então, no pré-tratamento de metal quente no forno de refino de pré-tratamento, a escória, pelo menos uma porção da qual foi solidificada, é usada junto com as sucatas de metais ferrosos enquanto ainda quentes.patent abstract: "method for refining hot metal". The present invention relates to fabricating molten steel from hot metal using a two-base converter type refining furnace and using a hot metal pretreatment refining furnace and the other as a hot metal decarbonization refining furnace, to the molten slag generated in the decarbonization refining furnace that is used while still hot as a refining agent in the pretreatment refining furnace without compromising the yields of the two refining furnaces. a refining method for fabricating molten steel from hot metal using a converter-type refining furnace with at least two bases and using one as a pre-treatment hot metal refining furnace (14) and using the other as a decarbonization refining furnace (3) for hot metal (2) pretreated in the pretreatment refining furnace. After the molten steel (5) obtained by decarbonization refining in the decarbonization refining furnace has been cast into a smelter (7), the slag (9) remaining inside the decarbonization refining furnace is allowed to flow further. in the molten state from above stacked ferrous scrap to solidify at least a portion of the slag. then, in the hot metal pretreatment in the pretreatment refining furnace, the slag, at least a portion of which has been solidified, is used together with the ferrous metal scraps while still hot.

BR112015008720-5A 2012-10-30 2013-10-25 METHOD FOR REFINING HOT METAL BR112015008720B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2012-238606 2012-10-30
JP2012238606 2012-10-30
PCT/JP2013/006331 WO2014068933A1 (en) 2012-10-30 2013-10-25 Hot metal refining method

Publications (2)

Publication Number Publication Date
BR112015008720A2 true BR112015008720A2 (en) 2017-07-04
BR112015008720B1 BR112015008720B1 (en) 2020-02-11

Family

ID=50626883

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112015008720-5A BR112015008720B1 (en) 2012-10-30 2013-10-25 METHOD FOR REFINING HOT METAL

Country Status (8)

Country Link
JP (1) JP5807720B2 (en)
KR (1) KR101680094B1 (en)
CN (1) CN104769136B (en)
BR (1) BR112015008720B1 (en)
IN (1) IN2015KN00602A (en)
TR (1) TR201504423T1 (en)
TW (1) TWI544081B (en)
WO (1) WO2014068933A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102142081B1 (en) * 2016-03-17 2020-08-06 닛폰세이테츠 가부시키가이샤 How to pre-melt charter
WO2018021019A1 (en) * 2016-07-27 2018-02-01 新日鐵住金株式会社 Molten steel production method
WO2018038508A1 (en) * 2016-08-23 2018-03-01 현대제철 주식회사 Method for refining hot metal in convertor
CN107311182A (en) * 2017-06-30 2017-11-03 昆明理工大学 A kind of device and method thereof of industrial silicon melt external refining purification
WO2022163200A1 (en) * 2021-01-26 2022-08-04 Ｊｆｅスチール株式会社 Method for refining molten iron

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01147011A (en) * 1987-12-03 1989-06-08 Sumitomo Metal Ind Ltd Steelmaking method
JPH08143928A (en) * 1994-11-18 1996-06-04 Nippon Steel Corp Method for preheating scrap by refined slag
JP4065097B2 (en) * 1999-10-26 2008-03-19 新日本製鐵株式会社 Converter steelmaking
JP4224910B2 (en) * 1999-12-15 2009-02-18 Ｊｆｅスチール株式会社 Hot treatment method for molten slag produced during hot metal decarburization treatment
JP2004190101A (en) * 2002-12-12 2004-07-08 Nippon Steel Corp Method for pre-treating molten iron
CN1273621C (en) * 2004-08-17 2006-09-06 西安建筑科技大学 Grading using method for slag of steel-melting furnace
CN100451131C (en) * 2005-11-23 2009-01-14 上海宝钢冶金建设公司 Production and utilization process for making steel using smelting slag

Also Published As

Publication number Publication date
TR201504423T1 (en) 2016-01-21
BR112015008720B1 (en) 2020-02-11
KR101680094B1 (en) 2016-11-28
JPWO2014068933A1 (en) 2016-09-08
IN2015KN00602A (en) 2015-07-17
TW201416456A (en) 2014-05-01
TWI544081B (en) 2016-08-01
CN104769136A (en) 2015-07-08
WO2014068933A1 (en) 2014-05-08
CN104769136B (en) 2017-05-17
KR20150076252A (en) 2015-07-06
JP5807720B2 (en) 2015-11-10

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Legal Events

Date Code Title Description
B06F Objections, documents and/or translations needed after an examination request according art. 34 industrial property law
B07A Technical examination (opinion): publication of technical examination (opinion)
B09A Decision: intention to grant
B16A Patent or certificate of addition of invention granted

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 25/10/2013, OBSERVADAS AS CONDICOES LEGAIS.