JPS55154535A - Manufacture of low slag sintered ore - Google Patents
Manufacture of low slag sintered oreInfo
- Publication number
- JPS55154535A JPS55154535A JP6284779A JP6284779A JPS55154535A JP S55154535 A JPS55154535 A JP S55154535A JP 6284779 A JP6284779 A JP 6284779A JP 6284779 A JP6284779 A JP 6284779A JP S55154535 A JPS55154535 A JP S55154535A
- Authority
- JP
- Japan
- Prior art keywords
- sio
- less
- ore
- content
- sintering
- 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
Links
Abstract
PURPOSE: To enable low slag operation of a blast furnace by adjusting the quantity and quality of the less than 1mm fine grain portion of starting material for sintering in manufacture of sintered ore for the furnace to lower the SiO2 content of the ore as well as facilitate formation of a melt in sintering.
CONSTITUTION: The amount of SiO2 and CaO contained in starting material for sintering is reduced as a whole independently of coarse grains and fine grains to reduce the amount of SiO2 and CaO contained in the not less than 1mm coarse grain portion. SiO2 and CaO in the less than 1mm fine grain portion of the starting material are then increased by a required amount. Thus, the SiO2 content of the material is lowered to 5.4% or less as a whole. The fine grain portion is adjusted to 25% or more, and the basicity CaO/SiO2 of the portion to 1.3 or less, enhancing the reduction strength of sintered ore. By adjusting the SiO2 content of the fine grain portion to 24% or more of the total SiO2 content of the ore the sintering property of the material is improved. Since the SiO2% of the whole ore is low, little slag is formed, and the amount of coke used in a blast furnace can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6284779A JPS55154535A (en) | 1979-05-22 | 1979-05-22 | Manufacture of low slag sintered ore |
DE8080300299T DE3061710D1 (en) | 1979-02-01 | 1980-02-01 | An improved raw materials mix and process for producing self-fluxing, sintered ores |
EP19800300299 EP0015085B1 (en) | 1979-02-01 | 1980-02-01 | An improved raw materials mix and process for producing self-fluxing, sintered ores |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6284779A JPS55154535A (en) | 1979-05-22 | 1979-05-22 | Manufacture of low slag sintered ore |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55154535A true JPS55154535A (en) | 1980-12-02 |
JPS5722978B2 JPS5722978B2 (en) | 1982-05-15 |
Family
ID=13212098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6284779A Granted JPS55154535A (en) | 1979-02-01 | 1979-05-22 | Manufacture of low slag sintered ore |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55154535A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6370385U (en) * | 1986-10-27 | 1988-05-11 |
-
1979
- 1979-05-22 JP JP6284779A patent/JPS55154535A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5722978B2 (en) | 1982-05-15 |
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