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BR0207370A - Processo de produção de ferro fundido lìquido num forno elétrico - Google Patents

Processo de produção de ferro fundido lìquido num forno elétrico

Info

Publication number
BR0207370A
BR0207370A BR0207370-6A BR0207370A BR0207370A BR 0207370 A BR0207370 A BR 0207370A BR 0207370 A BR0207370 A BR 0207370A BR 0207370 A BR0207370 A BR 0207370A
Authority
BR
Brazil
Prior art keywords
liquid
cast iron
liquid cast
electric arc
production process
Prior art date
Application number
BR0207370-6A
Other languages
English (en)
Other versions
BR0207370B1 (pt
Inventor
Jean-Luc Roth
Paul Berg
Fred Weisgerber
Fred Parasch
Original Assignee
Wurth Paul Sa
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 LU90735A external-priority patent/LU90735B1/fr
Priority claimed from LU90788A external-priority patent/LU90788B1/fr
Application filed by Wurth Paul Sa filed Critical Wurth Paul Sa
Publication of BR0207370A publication Critical patent/BR0207370A/pt
Publication of BR0207370B1 publication Critical patent/BR0207370B1/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B11/00—Making pig-iron other than in blast furnaces
    • C21B11/10—Making pig-iron other than in blast furnaces in electric furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
    • C21B13/0026—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide in the flame of a burner or a hot gas stream

Landscapes

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

Abstract

"PROCESSO DE PRODUçãO DE FERRO FUNDIDO LìQUIDO NUM FORNO ELéTRICO". Processo de produção de ferro fundido líquido num forno elétrico a arco, que compreende diversos eletrodos, equipado com uma base e que contém um banho de metal líquido, ao qual se sobrepõe uma escória líquida não-espumante, compreendendo o processo as seguintes etapas: - redução de finos metálicos para formar finos metálicos pré-reduzidos, compreendendo um excesso de carbono livre, - transferência a quente dos finos metálicos pré-reduzidos no interior de uma cortina de um gás inerte, para dentro de um banho de metal líquido contido no forno elétrico a arco, - agitação do banho de metal líquido por injeção de gás, de maneira a evitar a formação de crostas, - fusão dos finos metálicos pré-reduzidos no forno elétrico a arco, para obter ferro fundido líquido.
BRPI0207370-6A 2001-02-23 2002-02-20 processo de produção de ferro fundido lìquido num forno elétrico. BR0207370B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
LU90735A LU90735B1 (fr) 2001-02-23 2001-02-23 Proc-d- de production de fonte liquide
LU90788A LU90788B1 (fr) 2001-06-13 2001-06-13 Procédé de production de fonte liquide dans un four électrique
PCT/EP2002/001749 WO2002068700A1 (fr) 2001-02-23 2002-02-20 Procede de production de fonte liquide dans un four electrique

Publications (2)

Publication Number Publication Date
BR0207370A true BR0207370A (pt) 2004-06-22
BR0207370B1 BR0207370B1 (pt) 2010-08-10

Family

ID=26640378

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0207370-6A BR0207370B1 (pt) 2001-02-23 2002-02-20 processo de produção de ferro fundido lìquido num forno elétrico.

Country Status (10)

Country Link
US (1) US7169205B2 (pt)
EP (1) EP1383933B1 (pt)
JP (1) JP4212895B2 (pt)
AU (1) AU2002250975B2 (pt)
BR (1) BR0207370B1 (pt)
CA (1) CA2437254C (pt)
DE (2) DE02719871T1 (pt)
ES (1) ES2215498T3 (pt)
RU (1) RU2268308C2 (pt)
WO (1) WO2002068700A1 (pt)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6875251B2 (en) * 2002-05-15 2005-04-05 Hatch Ltd. Continuous steelmaking process
EP1983066A1 (fr) * 2007-03-30 2008-10-22 Paul Wurth S.A. Procédé de récupération du molybdène, du nickel, du cobalt ou de leurs mélanges à partir de catalyseurs usés ou régénérés
EP1997919A1 (fr) * 2007-05-24 2008-12-03 Paul Wurth S.A. Procédé de valorisation de résidus riches en zinc et en sulfates
JP5166804B2 (ja) * 2007-09-19 2013-03-21 株式会社神戸製鋼所 溶鉄製造方法
JP5166805B2 (ja) * 2007-09-19 2013-03-21 株式会社神戸製鋼所 アーク加熱による溶鉄製造方法
US8532158B2 (en) * 2007-11-17 2013-09-10 Inductotherm Corp. Melting and mixing of materials in a crucible by electric induction heel process
US20160326606A1 (en) * 2014-01-31 2016-11-10 Saudi Basic Industries Corporation Methods for producing improved steels by injecting iron containing by-products of an iron ore production process into liquid steel
ITUA20163986A1 (it) 2016-05-31 2017-12-01 Tenova Spa Metodo ed apparato per la produzione di ghisa, ghisa prodotta secondo detto metodo
KR102374981B1 (ko) 2017-10-23 2022-03-16 닛폰세이테츠 가부시키가이샤 전기로 및 산화철 함유 철원료의 용해 및 환원 방법
RU2734215C1 (ru) * 2020-04-16 2020-10-13 Автономная некоммерческая организация «Научно-исследовательский институт проблем экологии» Способ выплавки чугуна в доменной печи
DE102020205493A1 (de) 2020-04-30 2021-11-04 Sms Group Gmbh Verfahren zum Herstellen von flüssigem Roheisen aus einem DRI-Produkt
US12158306B2 (en) 2021-05-21 2024-12-03 Fives North American Combustion, Inc. Melting furnace purge system and method
US12497668B2 (en) * 2022-03-11 2025-12-16 Midrex Technologies, Inc. Hot metal production from DRI with electric arc heating
JP7636731B2 (ja) * 2022-04-22 2025-02-27 Ｊｆｅスチール株式会社 直接還元鉄の溶解方法、固体鉄の製造方法、土木建築用資材の製造方法および直接還元鉄の溶解システム
JP7636730B2 (ja) * 2022-04-22 2025-02-27 Ｊｆｅスチール株式会社 直接還元鉄の溶解方法、固体鉄の製造方法および土木建築用資材の製造方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1285711A (fr) * 1961-04-05 1962-02-23 Elektrokemisk As Procédé de fabrication de fonte dans un four électrique
SE371651C (sv) * 1973-03-30 1976-12-06 Asea Ab Sett och anordning for smeltreduktion
US4160663A (en) * 1978-02-21 1979-07-10 Jack Hsieh Method for the direct reduction of iron ore
GB8516143D0 (en) * 1985-06-26 1985-07-31 British Steel Corp Melting of metals
DE3607222A1 (de) * 1986-03-05 1987-09-10 Conradty Nuernberg Verfahren zur reduktion von eisenerz zu stahl
MX174486B (es) * 1990-03-13 1994-05-18 Cra Services Un procedimiento para producir metales y aleaciones de metales en un recipiente de reduccion por fusion
AT400245B (de) * 1993-12-10 1995-11-27 Voest Alpine Ind Anlagen Verfahren und anlage zum herstellen einer eisenschmelze
NL9401103A (nl) * 1994-07-01 1996-02-01 Hoogovens Groep Bv Werkwijze en inrichting voor het voorreduceren van ijzerverbindingen.
US5912916A (en) * 1995-05-01 1999-06-15 Alabama Power Company Electric furnace with insulated electrodes and process for producing molten metals
AT405054B (de) * 1997-06-18 1999-05-25 Voest Alpine Ind Anlagen Verfahren und anlage zum herstellen einer eisenschmelze unter einsatz von eisenhältigen hüttenwerksreststoffen
DE19744151C5 (de) * 1997-10-07 2004-08-26 Outokumpu Oyj Verfahren zum Schmelzen von feinkörnigem, direkt reduziertem Eisen in einem Elektrolichtbogenofen
LU90406B1 (fr) * 1999-06-21 2000-12-22 Wurth Paul Sa Proc-d- de production de fonte liquide
AUPQ205799A0 (en) * 1999-08-05 1999-08-26 Technological Resources Pty Limited A direct smelting process

Also Published As

Publication number Publication date
WO2002068700A1 (fr) 2002-09-06
EP1383933B1 (fr) 2005-05-18
US20040060389A1 (en) 2004-04-01
EP1383933A1 (fr) 2004-01-28
RU2003127390A (ru) 2005-03-27
CA2437254C (fr) 2009-06-30
ES2215498T3 (es) 2005-10-16
JP4212895B2 (ja) 2009-01-21
DE02719871T1 (de) 2004-07-15
CA2437254A1 (fr) 2002-09-06
DE60204221T2 (de) 2006-02-02
ES2215498T1 (es) 2004-10-16
RU2268308C2 (ru) 2006-01-20
AU2002250975B2 (en) 2006-11-23
DE60204221D1 (de) 2005-06-23
JP2004521188A (ja) 2004-07-15
BR0207370B1 (pt) 2010-08-10
US7169205B2 (en) 2007-01-30

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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 20/02/2002, OBSERVADAS AS CONDICOES LEGAIS.

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

Free format text: REFERENTE A 18A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: REFERENTE AO DESPACHO 21.6 PUBLICADO NA RPI 2554 DE 2019-12-17