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BR9916119A - Método e aparelho para a redução direta de óxidos de ferro - Google Patents

Método e aparelho para a redução direta de óxidos de ferro

Info

Publication number
BR9916119A
BR9916119A BR9916119-2A BR9916119A BR9916119A BR 9916119 A BR9916119 A BR 9916119A BR 9916119 A BR9916119 A BR 9916119A BR 9916119 A BR9916119 A BR 9916119A
Authority
BR
Brazil
Prior art keywords
reduction
oven
direct reduction
iron oxides
furnace
Prior art date
Application number
BR9916119-2A
Other languages
English (en)
Inventor
Henry Rafael Bueno
David Rabascall
Gianpietro Benedetti
Original Assignee
Danieli Off Mecc
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 Danieli Off Mecc filed Critical Danieli Off Mecc
Publication of BR9916119A publication Critical patent/BR9916119A/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
    • C21B13/0073—Selection or treatment of the reducing gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/22—Increasing the gas reduction potential of recycled exhaust gases by reforming
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/26—Increasing the gas reduction potential of recycled exhaust gases by adding additional fuel in recirculation pipes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/64—Controlling the physical properties of the gas, e.g. pressure or temperature
    • 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
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen
    • 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
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)
  • Compounds Of Iron (AREA)

Abstract

Patente de Invenção: <B>"MéTODO E APARELHO PARA A REDUçãO DIRETA DE óXIDOS DE FERRO"<D>. Método para a redução direta de ferro metálico dentro de um forno de redução vertical (10) do tipo com uma carga gravitacional, onde o forno de redução flui em contracorrente em relação ao material introduzido no forno, compreendendo as etapas a seguir: o ferro metálico é alimentado de cima para o forno (10), uma mistura de gás a alta temperatura consistindo em gás de redução à base de H~ 2~ e CO é injetada, e o mineral reduzido é removido do forno (10), a mistura de gás sendo introduzida em pelo menos duas zonas (12, 14) do forno (10) dispostas uma acima da outra, de modo a se obterem, de uma maneira controlada, um primeiro estágio de preaquecimento e de pré-redução na parte superior (12) do forno (10) e um segundo estágio de redução final na parte inferior (14) do forno (10). Um aparelho compreendendo os aspectos para a condução do processo, como descrito aqui, é reivindicado também.
BR9916119-2A 1998-12-11 1999-12-06 Método e aparelho para a redução direta de óxidos de ferro BR9916119A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998UD000212A IT1302811B1 (it) 1998-12-11 1998-12-11 Procedimento e relativo apparato per la riduzione direttadi ossidi di ferro
PCT/IB1999/001940 WO2000036156A1 (en) 1998-12-11 1999-12-06 Method and apparatus for the direct reduction of iron oxides

Publications (1)

Publication Number Publication Date
BR9916119A true BR9916119A (pt) 2001-07-24

Family

ID=11422794

Family Applications (2)

Application Number Title Priority Date Filing Date
BR9916119-2A BR9916119A (pt) 1998-12-11 1999-12-06 Método e aparelho para a redução direta de óxidos de ferro
BR9916118-4A BR9916118A (pt) 1998-12-11 1999-12-06 Método e equipamento para a redução direta de óxidos de ferro

Family Applications After (1)

Application Number Title Priority Date Filing Date
BR9916118-4A BR9916118A (pt) 1998-12-11 1999-12-06 Método e equipamento para a redução direta de óxidos de ferro

Country Status (10)

Country Link
US (3) US6395055B1 (pt)
EP (1) EP1147233B1 (pt)
AR (2) AR026103A1 (pt)
AT (1) ATE235564T1 (pt)
AU (2) AU1292100A (pt)
BR (2) BR9916119A (pt)
DE (1) DE69906384T2 (pt)
EG (2) EG22422A (pt)
IT (1) IT1302811B1 (pt)
WO (2) WO2000036156A1 (pt)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6602317B2 (en) * 1997-09-05 2003-08-05 Midrex International, B.V. Rotterdam, Zurich Branch Method and apparatus for controlling temperature uniformity of the burden in a direct reduction shaft furnace
AU2002357816A1 (en) * 2002-12-12 2004-07-09 Midrex Internaitonal B.V. Rotterdam, Zurich Branch Method and apparatus for controling temperature uniformity of the burden in a direct reduction shaft furnace
FR2881297B1 (fr) * 2005-01-27 2007-05-18 Schneider Toshiba Inverter Procede et systeme de gestion de la tension sur le bus continu d'un variateur de vitesse pour moteur electrique
ITMI20060158A1 (it) * 2006-01-31 2007-08-01 Danieli Off Mecc Processo ed impianto di riduzione
US7608129B2 (en) * 2006-04-24 2009-10-27 Hyl Technologies S.A. De C.V. Method and apparatus for producing direct reduced iron
DE102006062689B4 (de) * 2006-12-21 2009-01-22 Mines And Metals Engineering Gmbh (M.M.E.) Schachtofen für die direkte Reduktion von Eisenoxid
WO2013013295A1 (en) * 2011-07-26 2013-01-31 Hatch Ltd. Improved process for direct reduction of iron oxide
KR20150065728A (ko) 2012-09-14 2015-06-15 뵈스트알파인 스탈 게엠베하 불연속적으로 생성된 에너지를 저장하는 방법
US20140167336A1 (en) 2012-12-18 2014-06-19 L'air Liquide Societe Anonyme Pour I'etude Et I'exploitation Des Procedes Georges Claude Integration of oxygen transport membrane with coal based dri process
EP2961854B1 (en) * 2013-02-27 2017-09-27 HYL Technologies, S.A. de C.V. Direct reduction process with improved product quality and process gas efficiency
CN104726699B (zh) * 2015-03-25 2017-03-01 甘肃酒钢集团宏兴钢铁股份有限公司 利用冶金含铁尘泥生产的高强度复合金属化球团及其生产工艺
CN108474048B (zh) * 2015-12-28 2021-02-23 伊尔技术有限公司 通过使用合成气来生产高碳dri的方法和系统
ES2960574T3 (es) 2018-03-27 2024-03-05 Midrex Technologies Inc Sistema de inyección de oxígeno para un procedimiento de reducción directa
DE102021112922A1 (de) * 2021-06-02 2022-12-08 Thyssenkrupp Steel Europe Ag Verfahren zur Direktreduktion von Eisenerz

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054444A (en) * 1975-09-22 1977-10-18 Midrex Corporation Method for controlling the carbon content of directly reduced iron
GB2016124B (en) * 1978-03-11 1982-06-09 Hamburger Stahlwerke Gmbh Rocess and apparatus for the direct reduction of iron ores
US4270739A (en) * 1979-10-22 1981-06-02 Midrex Corporation Apparatus for direct reduction of iron using high sulfur gas
US4351513A (en) * 1981-01-29 1982-09-28 Midrex Corporation Direct reduction of iron using coke oven gas
US4536213A (en) * 1984-09-10 1985-08-20 Mildrex International, B.V. Reforming of higher hydrocarbons for metal oxide reduction
EP0257173B1 (de) * 1986-08-12 1990-03-14 VOEST-ALPINE INDUSTRIEANLAGENBAU GESELLSCHAFT m.b.H. Hüttenwerk sowie Verfahren zum Betrieb eines solchen Hüttenwerkes
US4834792A (en) * 1986-08-21 1989-05-30 Hylsa S.A. De C.V. Method for producing hot sponge iron by introducing hydrocarbon for carburizing into reduction zone
AT388176B (de) * 1987-07-30 1989-05-10 Voest Alpine Ag Verfahren und anlage zur gewinnung von fluessigem roheisen oder stahlvorprodukten aus stueckigen, eisenoxidhaeltigen einsatzstoffen
US5069716A (en) * 1989-12-22 1991-12-03 C.V.G. Siderurgica Del Orinoco, C.A. Process for the production of liquid steel from iron containing metal oxides
DE4030093A1 (de) * 1990-09-22 1992-03-26 Metallgesellschaft Ag Verfahren zum aufbereiten von erdgas fuer die direktreduktion von eisenerz im schachtofen
CA2090906A1 (en) * 1992-03-05 1993-09-06 Corporacion Venezolana De Guayana (Cvg) Method for improving quality of reforming gas used in the direct reduction of metal oxides
US5702246A (en) * 1996-02-22 1997-12-30 Xera Technologies Ltd. Shaft furnace for direct reduction of oxides
US6027545A (en) * 1998-02-20 2000-02-22 Hylsa, S.A. De C.V. Method and apparatus for producing direct reduced iron with improved reducing gas utilization
US6183535B1 (en) * 1998-10-16 2001-02-06 Hylsa, S.A. De C.V. Method for increasing the capacity of a direct reduced iron plant without increasing its reformer capacity

Also Published As

Publication number Publication date
IT1302811B1 (it) 2000-09-29
US20020030310A1 (en) 2002-03-14
US6551549B2 (en) 2003-04-22
EP1147233A1 (en) 2001-10-24
ATE235564T1 (de) 2003-04-15
US6319301B1 (en) 2001-11-20
AR021609A1 (es) 2002-07-31
AU1292100A (en) 2000-07-03
US6395055B1 (en) 2002-05-28
EP1147233B1 (en) 2003-03-26
DE69906384D1 (de) 2003-04-30
BR9916118A (pt) 2001-07-24
EG22422A (en) 2003-01-29
DE69906384T2 (de) 2003-09-04
EG22368A (en) 2002-12-31
WO2000036156A1 (en) 2000-06-22
WO2000036158A1 (en) 2000-06-22
AU1291900A (en) 2000-07-03
ITUD980212A1 (it) 2000-06-11
AR026103A1 (es) 2003-01-29

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Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
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 06/12/1999, OBSERVADAS AS CONDICOES LEGAIS.

B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 06.12.2019