JPS55104436A - Mgo-containing iron ore pellet - Google Patents
Mgo-containing iron ore pelletInfo
- 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
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
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)
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 |
-
1979
- 1979-01-29 JP JP959379A patent/JPS55104436A/en active Pending
Cited By (4)
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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