UA96505C2 - Method for producing of reduced iron pellets and method for production of open-hearth pig iron - Google Patents

Method for producing of reduced iron pellets and method for production of open-hearth pig iron

Info

Publication number
UA96505C2
UA96505C2 UAA201002836A UAA201002836A UA96505C2 UA 96505 C2 UA96505 C2 UA 96505C2 UA A201002836 A UAA201002836 A UA A201002836A UA A201002836 A UAA201002836 A UA A201002836A UA 96505 C2 UA96505 C2 UA 96505C2
Authority
UA
Ukraine
Prior art keywords
iron
producing
pellets
carbon
hearth
Prior art date
Application number
UAA201002836A
Other languages
Russian (ru)
Ukrainian (uk)
Inventor
Тецухару Ибараки
Original Assignee
Ниппон Стил Корпорейшен
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 Ниппон Стил Корпорейшен filed Critical Ниппон Стил Корпорейшен
Publication of UA96505C2 publication Critical patent/UA96505C2/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0046—Making spongy iron or liquid steel, by direct processes making metallised agglomerates or iron oxide
    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/244—Binding; Briquetting ; Granulating with binders organic
    • C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates
    • 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)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Iron (AREA)

Abstract

This invention provides a process for producing a reduced iron pellets. In the production process, in heating a molded product of a powder containing iron oxide and carbon in a rotary hearth-type reducing furnace to perform reduction treatment, a molded product produced using a raw material containing the iron oxide, of which the average particle diameter is not more than 50 microns, is reduced under conditions of a carbon monoxide to carbon dioxide ratio in a reduction zone of 0.3 to 1 and a temperature of 1400°C or below to produce reduced iron pellets having a percentage metallization of iron of 50 to 85% and a percentage residual carbon of not more than 2%.
UAA201002836A 2007-09-14 2008-09-11 Method for producing of reduced iron pellets and method for production of open-hearth pig iron UA96505C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007239058 2007-09-14

Publications (1)

Publication Number Publication Date
UA96505C2 true UA96505C2 (en) 2011-11-10

Family

ID=40658481

Family Applications (1)

Application Number Title Priority Date Filing Date
UAA201002836A UA96505C2 (en) 2007-09-14 2008-09-11 Method for producing of reduced iron pellets and method for production of open-hearth pig iron

Country Status (3)

Country Link
JP (1) JP5053305B2 (en)
UA (1) UA96505C2 (en)
ZA (1) ZA201001331B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5517501B2 (en) * 2009-06-23 2014-06-11 新日鐵住金株式会社 Method for producing sintered ore
JP5498919B2 (en) * 2010-11-15 2014-05-21 株式会社神戸製鋼所 Method for producing reduced iron
JP5578057B2 (en) * 2010-12-14 2014-08-27 新日鐵住金株式会社 Porous unevenly-distributed fired pellet and method for producing the same
JP5546675B1 (en) 2012-12-07 2014-07-09 新日鉄住金エンジニアリング株式会社 Blast furnace operating method and hot metal manufacturing method
JP5693768B2 (en) * 2012-12-07 2015-04-01 新日鉄住金エンジニアリング株式会社 Blast furnace operating method and hot metal manufacturing method
CN104451132B (en) * 2014-11-25 2017-06-06 北京神雾环境能源科技集团股份有限公司 The method for reducing phosphorus-containing iron ore
JP7180045B2 (en) * 2019-04-18 2022-11-30 株式会社神戸製鋼所 Method for using raw material containing metallic iron containing Zn
CN113005287B (en) * 2021-02-26 2023-04-07 安徽工业大学 Blast furnace pellet capable of being used for treating failure SCR denitration catalyst and preparation method thereof
JP2022150455A (en) * 2021-03-26 2022-10-07 株式会社神戸製鋼所 Pig iron production method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3749710B2 (en) * 2003-01-16 2006-03-01 新日本製鐵株式会社 Method for producing high-strength iron-containing granular material

Also Published As

Publication number Publication date
JP2009102746A (en) 2009-05-14
JP5053305B2 (en) 2012-10-17
ZA201001331B (en) 2010-10-27

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