BR9806257A - Método de operação de forno de soleira rotativo para redução de óxidos. - Google Patents

Método de operação de forno de soleira rotativo para redução de óxidos.

Info

Publication number
BR9806257A
BR9806257A BR9806257A BR9806257A BR9806257A BR 9806257 A BR9806257 A BR 9806257A BR 9806257 A BR9806257 A BR 9806257A BR 9806257 A BR9806257 A BR 9806257A BR 9806257 A BR9806257 A BR 9806257A
Authority
BR
Brazil
Prior art keywords
operating method
coal
fine
hearth furnace
rotary hearth
Prior art date
Application number
BR9806257A
Other languages
English (en)
Inventor
Kanji Takeda
Yoshitaka Sawa
Tetsuya Yamamoto
Original Assignee
Kawasaki Steel Co
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 Kawasaki Steel Co filed Critical Kawasaki Steel Co
Publication of BR9806257A publication Critical patent/BR9806257A/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
    • C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
    • C21B13/105—Rotary hearth-type 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
    • 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
    • Y02P10/20—Recycling

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)
  • Tunnel Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Patente de Invenção: <B>"METODO DE OPERAçãO FORNO DE SOLEIRA ROTATIVO PARA REDUçãO DE óXIDOS"<D>. Uma camada mista de minério fino e cinza de carvão e uma camada de carvão fino são empilhadas em uma soleira na forma de camadas separadas uma da outra. O minério fino é reduzido enquanto o carvão fino é pirolizado para produzir cinza de carvão. A cinza de carvão produzida é usada repetidamente.
BR9806257A 1997-09-30 1998-03-27 Método de operação de forno de soleira rotativo para redução de óxidos. BR9806257A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP26540997A JP3482838B2 (ja) 1997-09-30 1997-09-30 移動型炉床炉の操業方法
PCT/JP1998/001398 WO1999016912A1 (fr) 1997-09-30 1998-03-27 Procede de fonctionnement d'un four a sole rotative pour la reduction d'oxydes

Publications (1)

Publication Number Publication Date
BR9806257A true BR9806257A (pt) 2000-01-25

Family

ID=17416773

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9806257A BR9806257A (pt) 1997-09-30 1998-03-27 Método de operação de forno de soleira rotativo para redução de óxidos.

Country Status (10)

Country Link
US (1) US6264721B1 (pt)
EP (1) EP0976840B1 (pt)
JP (1) JP3482838B2 (pt)
KR (1) KR100402451B1 (pt)
BR (1) BR9806257A (pt)
DE (1) DE69824570T2 (pt)
ID (1) ID21848A (pt)
MY (1) MY125282A (pt)
WO (1) WO1999016912A1 (pt)
ZA (1) ZA982704B (pt)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW502066B (en) 1998-08-27 2002-09-11 Kobe Steel Ltd Method for operating moving hearth reducing furnace
JP3404309B2 (ja) 1999-01-18 2003-05-06 株式会社神戸製鋼所 還元鉄塊成物の製造方法および製造装置
JP3009661B1 (ja) 1999-01-20 2000-02-14 株式会社神戸製鋼所 還元鉄ペレットの製造方法
US20020053307A1 (en) * 2000-10-31 2002-05-09 Natsuo Ishiwata Method for discharging reduced product from a moveable-hearth furnace and a discharging device
AU780672B2 (en) * 2000-10-31 2005-04-07 Jfe Steel Corporation A method for discharging reduced product from a movable-hearth furnace and a discharging device
JP4266284B2 (ja) 2001-07-12 2009-05-20 株式会社神戸製鋼所 金属鉄の製法
EP1405895A1 (en) * 2002-10-04 2004-04-07 Danieli Corus Technical Services BV Apparatus and process for the treatment of a material under pyrolytical conditions, and use thereof
BRPI0515812B1 (pt) * 2004-12-07 2014-09-23 Nu Iron Technology Llc Método para uso na produção de pepitas metálicas de ferro
AU2009201322B2 (en) 2008-04-03 2014-10-30 Nu-Iron Technology, Llc System and method for producing metallic iron
JP5042203B2 (ja) * 2008-12-15 2012-10-03 株式会社神戸製鋼所 粒状金属鉄の製法
WO2011001288A2 (en) 2009-06-29 2011-01-06 Bairong Li Metal reduction processes, metallurgical processes and products and apparatus
CN113956896A (zh) * 2020-07-20 2022-01-21 山西潞安煤基清洁能源有限责任公司 一种提高化工煤混配合格率的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1452627A (en) * 1921-01-21 1923-04-24 Edwin B Thornhill Process for the production of sponge iron and other metallic products
LU60981A1 (pt) * 1970-05-26 1971-06-24
US3770417A (en) * 1971-02-23 1973-11-06 Salem Corp Simultaneous production of metallized ores and coke
US4701214A (en) * 1986-04-30 1987-10-20 Midrex International B.V. Rotterdam Method of producing iron using rotary hearth and apparatus
US4676741A (en) * 1986-10-22 1987-06-30 The International Metals Reclamation Company, Inc. Radiantly heated furnace
BE1008397A6 (fr) * 1994-07-13 1996-05-07 Centre Rech Metallurgique Procede pour fabriquer une eponge de fer a basse teneur en soufre.
US5567224A (en) * 1995-06-06 1996-10-22 Armco Inc. Method of reducing metal oxide in a rotary hearth furnace heated by an oxidizing flame

Also Published As

Publication number Publication date
ID21848A (id) 1999-08-05
DE69824570D1 (de) 2004-07-22
EP0976840A1 (en) 2000-02-02
ZA982704B (en) 1998-10-05
EP0976840B1 (en) 2004-06-16
KR20000069180A (ko) 2000-11-25
JP3482838B2 (ja) 2004-01-06
WO1999016912A1 (fr) 1999-04-08
JPH11106814A (ja) 1999-04-20
MY125282A (en) 2006-07-31
DE69824570T2 (de) 2004-11-04
KR100402451B1 (ko) 2003-10-22
EP0976840A4 (en) 2003-01-15
US6264721B1 (en) 2001-07-24

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Legal Events

Date Code Title Description
B25D Requested change of name of applicant approved
B25G Requested change of headquarter approved
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements