CA2266301A1 - Method of producing reduced iron agglomerates - Google Patents

Method of producing reduced iron agglomerates Download PDF

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Publication number
CA2266301A1
CA2266301A1 CA 2266301 CA2266301A CA2266301A1 CA 2266301 A1 CA2266301 A1 CA 2266301A1 CA 2266301 CA2266301 CA 2266301 CA 2266301 A CA2266301 A CA 2266301A CA 2266301 A1 CA2266301 A1 CA 2266301A1
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CA
Canada
Prior art keywords
agglomerates
iron oxide
iron
reduced iron
reduced
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA 2266301
Other languages
French (fr)
Other versions
CA2266301C (en
Inventor
Kojiro Fuji
Hidetoshi Tanaka
Takao Harada
Takeshi Sugiyama
Yoshimichi Takenaka
Kazuya Miyagawa
Shoji Shirouchi
Haruhisa Iwakiri
Makoto Nishimura
Takao Umeki
Sumito Hashimoto
Teruhisa Uehara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Publication of CA2266301A1 publication Critical patent/CA2266301A1/en
Application granted granted Critical
Publication of CA2266301C publication Critical patent/CA2266301C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Iron (AREA)

Abstract

Iron oxide agglomerates incorporated with the carbonaceous material having a particle size within a range of about 10 to 30 mm are prepared upon production of reduced iron agglomerates. Then, the iron oxide agglomerates incorporated with the carbonaceous material were laid thinly at a laying density of less than 1.4 kg/m2/mm or lower on a hearth of a moving hearth furnace. Subsequently, the iron oxide agglomerates are heated rapidly such that the surface temperature of the iron oxide agglomerates reaches 1200°C or higher within one-thud of the retention period of time of the iron oxide agglomerates in the moving hearth furnace. Then, the iron oxide agglomerates are reduced till the metallization ratio thereof reaches 85% or higher to form reduced iron agglomerates and then the reduced iron agglomerates are discharged out of the moving hearth furnace. With the procedures, reduced iron agglomerates of a high average quality can be obtained at a high productivity.
CA 2266301 1998-03-24 1999-03-23 Method of producing reduced iron agglomerates Expired - Fee Related CA2266301C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7603298 1998-03-24
JP10-76032 1998-03-24

Publications (2)

Publication Number Publication Date
CA2266301A1 true CA2266301A1 (en) 1999-09-24
CA2266301C CA2266301C (en) 2003-02-11

Family

ID=13593493

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2266301 Expired - Fee Related CA2266301C (en) 1998-03-24 1999-03-23 Method of producing reduced iron agglomerates

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CA (1) CA2266301C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014126495A1 (en) * 2013-02-13 2014-08-21 Siemens Aktiengesellschaft Apparatus and method for automatic controlling direct reduction process of iron oxide containing material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014126495A1 (en) * 2013-02-13 2014-08-21 Siemens Aktiengesellschaft Apparatus and method for automatic controlling direct reduction process of iron oxide containing material

Also Published As

Publication number Publication date
CA2266301C (en) 2003-02-11

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