JPS55115931A - Manufacture of sintered ore - Google Patents

Manufacture of sintered ore

Info

Publication number
JPS55115931A
JPS55115931A JP2301779A JP2301779A JPS55115931A JP S55115931 A JPS55115931 A JP S55115931A JP 2301779 A JP2301779 A JP 2301779A JP 2301779 A JP2301779 A JP 2301779A JP S55115931 A JPS55115931 A JP S55115931A
Authority
JP
Japan
Prior art keywords
iron
sio
dust
cao
sintered ore
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
JP2301779A
Other languages
Japanese (ja)
Other versions
JPS62973B2 (en
Inventor
Yoshiyasu Shirota
Hiroshi Nishioka
Isao Yamazaki
Keizo Hayashida
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP2301779A priority Critical patent/JPS55115931A/en
Publication of JPS55115931A publication Critical patent/JPS55115931A/en
Publication of JPS62973B2 publication Critical patent/JPS62973B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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

  • Manufacture And Refinement Of Metals (AREA)

Abstract

PURPOSE: To reduce iron oxide, to iron, contained in dust discharged in sintering iron ore by utilizing the dust as a hot iron desiliconizing agent and to recycle desiliconization slag as SiO2 and CaO sources for manufacturing sintered ore.
CONSTITUTION: Sintering dust discharged in manufacturing sintered ore as starting material for a blast furnace contains about 60% Fe2O3 and about 20% CaO. By making use of this dust as a hot iron desiliconizing agent as it is, Si in hot iron is oxidized to SiO2 with the Fe2O3, which is simultaneously reduced to Fe and enters the hot iron. Desiliconization slag formed at this time is based on SiO2 and CaO, so it is recycled as starting material for SiO2 and CaO required in manufacturing sintered ore from fine ore. Thus, the sintering dust can be utilized as it is without processing, and the hot iron desiliconization slag which was thrown away formerly can be recycled effectively.
COPYRIGHT: (C)1980,JPO&Japio
JP2301779A 1979-02-28 1979-02-28 Manufacture of sintered ore Granted JPS55115931A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2301779A JPS55115931A (en) 1979-02-28 1979-02-28 Manufacture of sintered ore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2301779A JPS55115931A (en) 1979-02-28 1979-02-28 Manufacture of sintered ore

Publications (2)

Publication Number Publication Date
JPS55115931A true JPS55115931A (en) 1980-09-06
JPS62973B2 JPS62973B2 (en) 1987-01-10

Family

ID=12098712

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2301779A Granted JPS55115931A (en) 1979-02-28 1979-02-28 Manufacture of sintered ore

Country Status (1)

Country Link
JP (1) JPS55115931A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62238349A (en) * 1986-04-08 1987-10-19 Sumitomo Metal Ind Ltd Manufacture of chromium-containing molten iron metal

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5343019A (en) * 1976-09-30 1978-04-18 Nippon Steel Corp Refining method for steel with reduced slag formation
JPS5475416A (en) * 1977-11-29 1979-06-16 Nippon Steel Corp Recycling method for nonfeerrous substance produced in steel making system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5343019A (en) * 1976-09-30 1978-04-18 Nippon Steel Corp Refining method for steel with reduced slag formation
JPS5475416A (en) * 1977-11-29 1979-06-16 Nippon Steel Corp Recycling method for nonfeerrous substance produced in steel making system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62238349A (en) * 1986-04-08 1987-10-19 Sumitomo Metal Ind Ltd Manufacture of chromium-containing molten iron metal

Also Published As

Publication number Publication date
JPS62973B2 (en) 1987-01-10

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