JPS55104436A - Mgo-containing iron ore pellet - Google Patents

Mgo-containing iron ore pellet

Info

Publication number
JPS55104436A
JPS55104436A JP959379A JP959379A JPS55104436A JP S55104436 A JPS55104436 A JP S55104436A JP 959379 A JP959379 A JP 959379A JP 959379 A JP959379 A JP 959379A JP S55104436 A JPS55104436 A JP S55104436A
Authority
JP
Japan
Prior art keywords
mgo
pellets
sio
cao
iron 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.)
Pending
Application number
JP959379A
Other languages
Japanese (ja)
Inventor
Takeshi Sugiyama
Akiji Shirouchi
Osamu Tsuchiya
Mamoru Onoda
Isao Fujita
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
Priority to JP959379A priority Critical patent/JPS55104436A/en
Publication of JPS55104436A publication Critical patent/JPS55104436A/en
Pending 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 lower the coke ratio of a blast furnace and enhance the productivity coefficient thereof by blending a specified amt. of starting materials for MgO and CaO into acidic iron ore in manufacture of pellets the lower the softening contraction rate of the pellets at high temps. and enhance the high temps. load softening properties thereof.
CONSTITUTION: In manufacture of pellets using iron ore bearing SiO2 as a principal gangue component, scrap MgO fire brick or an MgO-contg. substance such as magnesite, brucite or sea water magnesia is added to the ore to adjust the ratio of MgO/SiO2 to 0.4 or more, and CaO-contg. starting material such as dolomite or limestone is added to adjust the ratio of CaO/SiO2 in the pellets to 0.4 or less. The pellets form molten FeO.SiO2 in the high temp. zone of a blast furnace, prevent lowering in reduction due to CO and gas permeability, and stabilize the furnace conditions.
COPYRIGHT: (C)1980,JPO&Japio
JP959379A 1979-01-29 1979-01-29 Mgo-containing iron ore pellet Pending JPS55104436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP959379A JPS55104436A (en) 1979-01-29 1979-01-29 Mgo-containing iron ore pellet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP959379A JPS55104436A (en) 1979-01-29 1979-01-29 Mgo-containing iron ore pellet

Publications (1)

Publication Number Publication Date
JPS55104436A true JPS55104436A (en) 1980-08-09

Family

ID=11724621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP959379A Pending JPS55104436A (en) 1979-01-29 1979-01-29 Mgo-containing iron ore pellet

Country Status (1)

Country Link
JP (1) JPS55104436A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1040131C (en) * 1995-12-19 1998-10-07 祝朝晖 Activating carbon magnesium type iron smelting pellets
CN110106351A (en) * 2019-04-19 2019-08-09 承德信通首承矿业有限责任公司 A kind of production method of magnesium-rich pellet nodulizing
CN111057842A (en) * 2019-12-28 2020-04-24 海城市鹏程镁矿有限公司 Method for preparing magnesite powder ore green ball by carbon dioxide carbonization method
CN113265496A (en) * 2021-02-07 2021-08-17 首钢集团有限公司 Blast furnace iron-making method using full-acid pellets as raw materials

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1040131C (en) * 1995-12-19 1998-10-07 祝朝晖 Activating carbon magnesium type iron smelting pellets
CN110106351A (en) * 2019-04-19 2019-08-09 承德信通首承矿业有限责任公司 A kind of production method of magnesium-rich pellet nodulizing
CN111057842A (en) * 2019-12-28 2020-04-24 海城市鹏程镁矿有限公司 Method for preparing magnesite powder ore green ball by carbon dioxide carbonization method
CN113265496A (en) * 2021-02-07 2021-08-17 首钢集团有限公司 Blast furnace iron-making method using full-acid pellets as raw materials

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