BR0114773A - Procedimento para a produção de aços inoxidáveis, particularmente aço cromo e aço cromo-nìquel, finos - Google Patents

Procedimento para a produção de aços inoxidáveis, particularmente aço cromo e aço cromo-nìquel, finos

Info

Publication number
BR0114773A
BR0114773A BR0114773-0A BR0114773A BR0114773A BR 0114773 A BR0114773 A BR 0114773A BR 0114773 A BR0114773 A BR 0114773A BR 0114773 A BR0114773 A BR 0114773A
Authority
BR
Brazil
Prior art keywords
procedure
production
slag
chrome steel
stainless steels
Prior art date
Application number
BR0114773-0A
Other languages
English (en)
Other versions
BR0114773B1 (pt
Inventor
Karl Reiner G Tzinger
Bernt Rollinger
Stefan Lemke
Johann Reichel
Original Assignee
Sms Demag Ag
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
Priority claimed from DE10115779A external-priority patent/DE10115779A1/de
Priority claimed from DE10137761A external-priority patent/DE10137761A1/de
Application filed by Sms Demag Ag filed Critical Sms Demag Ag
Publication of BR0114773A publication Critical patent/BR0114773A/pt
Publication of BR0114773B1 publication Critical patent/BR0114773B1/pt

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
    • 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
    • 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
    • C21C5/5264—Manufacture of alloyed steels including ferro-alloys
    • 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
    • C21C5/005—Manufacture of stainless steel
    • 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
    • C21C5/5252—Manufacture of steel in electric furnaces in an electrically heated multi-chamber furnace, a combination of electric furnaces or an electric furnace arranged for associated working with a non electric 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
    • 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
    • C21C7/0685—Decarburising of stainless steel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Laminated Bodies (AREA)

Abstract

"PROCEDIMENTO PARA A PRODUçãO DE AçOS INOXIDáVEIS, PARTICULARMENTE AçO CROMO E AçO CROMO-NìQUEL, FINOS". A invenção se refere a um procedimento para a produção de aços inoxidávies, especialmente aços cromo e aços cromo-níquel em uma unidade de fundição apresentando um recipiente metalúrgico ou em uma unidade de produção apresentando no mínimo dois recipientes de processamento (2,3) para o abastecimento de uma unidade de produção de aço, nos quais se acionam, alternadamente, um processo de forno de arco elétrico (1) e um processo de sopro (11). Para tornar este procedimento mais económico deve-se iniciar uma operação reversível da escória não reduzida do conversor na operação era forno de arco elétrico. Para isto a escória com alto teor de cromo (19) no primeiro passo do processamento, é fundida juntamente com a fusão do lote acrescentado, a escória de alto teor de cromo durante o processo de fusão com silício e carbono é reduzida sob condições termodinâmicas favoráveis do arco voltaico, assim que a massa fundida atingir uma temperatura máxima de 1490 <198>C e a escória é eliminada. Depois, o processo de sopro é conduzido, em que o teor de carbono da massa fundida é reduzido até um valor inferior a 0,9%. Em uma temperatura de vazamento de 1620<198>C a 1720<198>C a massa fundida (18) é vazada, restando a escória de alto teor de cromo (19) não reduzida do processo de sopro no recipiente de processamento.
BRPI0114773-0A 2000-10-18 2001-09-27 procedimento para a produção de aços inoxidáveis, particularmente aço cromo e aço cromo-nìquel, finos. BR0114773B1 (pt)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
DE10051803 2000-10-18
DE10051803.6 2000-10-18
DE10115779.7 2001-03-29
DE10115779A DE10115779A1 (de) 2000-10-18 2001-03-29 Verfahren zur Erzeugung nichtrostender Stähle, insbesondere chrom- und chromnickelhaltiger Edelstähle
DE10134880 2001-07-18
DE10134880.0 2001-07-18
DE10137761A DE10137761A1 (de) 2001-07-18 2001-08-01 Verfahren zur Erzeugung nichtrostender Stähle, insbesondere chrom-und chromnickelhaltiger Edelstähle
DE10137761.4 2001-08-01
PCT/EP2001/011190 WO2002033130A1 (de) 2000-10-18 2001-09-27 Verfahren zur erzeugung nichtrostender stähle, insbesondere chrom- und chromnickelhaltiger edelstähle

Publications (2)

Publication Number Publication Date
BR0114773A true BR0114773A (pt) 2003-10-07
BR0114773B1 BR0114773B1 (pt) 2010-03-09

Family

ID=27437895

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0114773-0A BR0114773B1 (pt) 2000-10-18 2001-09-27 procedimento para a produção de aços inoxidáveis, particularmente aço cromo e aço cromo-nìquel, finos.

Country Status (14)

Country Link
US (1) US7094271B2 (pt)
EP (1) EP1332232B1 (pt)
JP (1) JP2004511659A (pt)
KR (1) KR100819126B1 (pt)
CN (1) CN1222629C (pt)
AT (1) ATE263845T1 (pt)
BR (1) BR0114773B1 (pt)
CZ (1) CZ299403B6 (pt)
DE (1) DE50101945D1 (pt)
ES (1) ES2218450T3 (pt)
MX (1) MXPA03003402A (pt)
PL (1) PL196203B1 (pt)
TW (1) TW554046B (pt)
WO (1) WO2002033130A1 (pt)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10323507A1 (de) * 2003-05-24 2004-12-09 Sms Demag Ag Verfahren zur Rückgewinnung von metallischen Elementen, insbesondere metallischem Chrom, aus metalloxidhaltigen Schlacken im Elektrolichtbogenofen
KR100793591B1 (ko) * 2006-12-28 2008-01-14 주식회사 포스코 산화크롬 함유 슬래그로부터의 크롬 금속 환원 방법
PL3147376T3 (pl) 2008-08-04 2019-03-29 Nucor Corporation Niskokosztowe wytwarzanie stali o niskiej zawartości węgla, niskiej zawartości siarki i niskiej zawartości azotu przy użyciu konwencjonalnego wyposażenia stalowniczego
WO2011045755A1 (en) * 2009-10-13 2011-04-21 Petrus Hendrik Ferreira Bouwer Ferrochrome alloy production
CN101914715B (zh) * 2010-08-31 2012-06-06 振石集团东方特钢股份有限公司 一种冶炼不锈钢母液的方法
US9551045B2 (en) * 2011-05-27 2017-01-24 A. Finkl & Sons Co. Flexible minimum energy utilization electric arc furnace system and processes for making steel products
CN106435398B (zh) * 2016-10-15 2017-12-29 睿智钢业有限公司 耐腐蚀焊接结构钢及其制备方法
CN107504828A (zh) * 2017-07-25 2017-12-22 攀钢集团研究院有限公司 钒铁冶炼炉
CN115558816B (zh) * 2022-09-01 2023-09-19 广东广青金属科技有限公司 一种利用矿热炉烟气与炉渣显热的镍铬合金的冶炼方法与系统
CN118621087B (zh) * 2024-08-09 2024-11-05 金鼎重工有限公司 一种铸钢母液精炼装置及精炼方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430131A (en) * 1944-11-04 1947-11-04 American Rolling Mill Co Production of stainless steel
US5417740A (en) * 1992-05-26 1995-05-23 Zaptech Corporation Method for producing steel
AT403293B (de) * 1995-01-16 1997-12-29 Kct Tech Gmbh Verfahren und anlage zum herstellen von legierten stählen
DE19621143A1 (de) * 1996-01-31 1997-08-07 Mannesmann Ag Verfahren zur Erzeugung nichtrostender Stähle
DE19728102C2 (de) * 1997-07-02 1999-08-05 Schloemann Siemag Ag Verfahren und Vorrichtung zur Herstellung von Stählen mit hohem Cr-Gehalt und/oder Ferrolegierungen
PL352472A1 (en) * 1999-06-23 2003-08-25 Sms Demag Ag Method of recovering metallic chromium from a chromium oxide containing slag

Also Published As

Publication number Publication date
PL196203B1 (pl) 2007-12-31
KR100819126B1 (ko) 2008-04-02
PL360842A1 (en) 2004-09-20
ATE263845T1 (de) 2004-04-15
DE50101945D1 (de) 2004-05-13
EP1332232B1 (de) 2004-04-07
EP1332232A1 (de) 2003-08-06
WO2002033130A1 (de) 2002-04-25
CN1222629C (zh) 2005-10-12
BR0114773B1 (pt) 2010-03-09
TW554046B (en) 2003-09-21
ES2218450T3 (es) 2004-11-16
KR20030040541A (ko) 2003-05-22
CZ20031111A3 (cs) 2003-10-15
CN1469933A (zh) 2004-01-21
MXPA03003402A (es) 2004-05-04
JP2004511659A (ja) 2004-04-15
CZ299403B6 (cs) 2008-07-16
US20040099091A1 (en) 2004-05-27
US7094271B2 (en) 2006-08-22

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Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 27/09/2001, OBSERVADAS AS CONDICOES LEGAIS.

B25D Requested change of name of applicant approved

Owner name: SMS SIEMAG AKTIENGESELLSCHAFT (DE)

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

Free format text: REFERENTE A 19A ANUIDADE.

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 2599 DE 27-10-2020 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.