BR7705565A - Processo para apassivacao de ferro esponja,e aperfeicoamento na reducao direta de pelotas de minerio de ferro em um forno de cadinho - Google Patents

Processo para apassivacao de ferro esponja,e aperfeicoamento na reducao direta de pelotas de minerio de ferro em um forno de cadinho

Info

Publication number
BR7705565A
BR7705565A BR7705565A BR7705565A BR7705565A BR 7705565 A BR7705565 A BR 7705565A BR 7705565 A BR7705565 A BR 7705565A BR 7705565 A BR7705565 A BR 7705565A BR 7705565 A BR7705565 A BR 7705565A
Authority
BR
Brazil
Prior art keywords
apassivation
perfecting
iron
direct reduction
ore pellets
Prior art date
Application number
BR7705565A
Other languages
English (en)
Inventor
S Vaslo
Original Assignee
Uss Eng & Consult
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 Uss Eng & Consult filed Critical Uss Eng & Consult
Publication of BR7705565A publication Critical patent/BR7705565A/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
    • C21B13/0086—Conditioning, transformation of reduced iron ores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/14—Treatment of metallic powder
    • B22F1/145—Chemical treatment, e.g. passivation or decarburisation
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Iron (AREA)
BR7705565A 1976-08-23 1977-08-22 Processo para apassivacao de ferro esponja,e aperfeicoamento na reducao direta de pelotas de minerio de ferro em um forno de cadinho BR7705565A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/716,398 US4070180A (en) 1976-08-23 1976-08-23 Process for the passivation of sponge iron utilizing reducing gases containing free oxygen

Publications (1)

Publication Number Publication Date
BR7705565A true BR7705565A (pt) 1978-05-02

Family

ID=24877841

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7705565A BR7705565A (pt) 1976-08-23 1977-08-22 Processo para apassivacao de ferro esponja,e aperfeicoamento na reducao direta de pelotas de minerio de ferro em um forno de cadinho

Country Status (2)

Country Link
US (1) US4070180A (pt)
BR (1) BR7705565A (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU517614B2 (en) * 1977-09-07 1981-08-13 Nippon Steel Corporation A method for cooling high-temperature reduced iron
IT1310784B1 (it) 1999-10-11 2002-02-22 Danieli Off Mecc Apparecchiatura di riduzione diretta per ottenere ferro metallico conalto contenuto di carbonio in forma di carburo
US9464338B2 (en) 2012-05-05 2016-10-11 Nu-Iron Technology, Llc Reclaiming and inhibiting activation of DRI dust and fines
EP2905345A1 (de) * 2014-02-10 2015-08-12 Primetals Technologies Austria GmbH Pneumatische Erzchargierung
SE548168C2 (en) * 2023-10-09 2026-04-13 Hybrit Development Ab Process and system for production of passivated cold direct reduced iron

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578800A (en) * 1949-01-21 1951-12-18 Union Carbide & Carbon Corp Stabilization of pyrophoric iron
US3160498A (en) * 1960-06-29 1964-12-08 Armco Steel Corp Fluidized iron ore reduction process and apparatus
US3617394A (en) * 1968-11-22 1971-11-02 Exxon Research Engineering Co Kiln passivation of reduced ores
US3850616A (en) * 1973-10-29 1974-11-26 Armco Steel Corp Inert gas seal for product discharge from a shaft furnace
US3844764A (en) * 1973-12-26 1974-10-29 Medrex Corp Process for the continuous passivation of sponge iron particles

Also Published As

Publication number Publication date
US4070180A (en) 1978-01-24

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