JPS57192228A - Production of sintered ore - Google Patents
Production of sintered oreInfo
- Publication number
- JPS57192228A JPS57192228A JP7576681A JP7576681A JPS57192228A JP S57192228 A JPS57192228 A JP S57192228A JP 7576681 A JP7576681 A JP 7576681A JP 7576681 A JP7576681 A JP 7576681A JP S57192228 A JPS57192228 A JP S57192228A
- Authority
- JP
- Japan
- Prior art keywords
- lime stone
- particle size
- sintered ore
- 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.)
- Pending
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
PURPOSE: To produce high-quality sintered ore at a low cost, while improving the resistance of the sintered ore to reducing pulverization, by properly controlling the particle size distribution of lime stone to be added to powdery iron ore.
CONSTITUTION: When powdery iron ore is sintered in a downward-inhaled sintering machine, the particle size of lime stone in a compounding material to be charged to a palette or pan is conditioned into the state that a part of 1W 3mm is at 50% or more, while a part of 3W5mm and a fine-grained part of -0.25mm are inevitably below 10% and 19%, respectively. The particle size of the lime stone at only upper and lower layers in the palette or pan may be controlled. A temperature level as a whole is lowered by lowering a sintering temperature along the width and thickness of the lime stone layer with a uniform rate. Consequently, needle-shaped calcium ferrite and dapple hematite are formed in a proper temperature range. According to this method, the reducing pulverization index of the sintered ore is stabilized at a low level, and reaction efficiency at a reducing zone in a blast furnace is enhanced.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7576681A JPS57192228A (en) | 1981-05-21 | 1981-05-21 | Production of sintered ore |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7576681A JPS57192228A (en) | 1981-05-21 | 1981-05-21 | Production of sintered ore |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57192228A true JPS57192228A (en) | 1982-11-26 |
Family
ID=13585656
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7576681A Pending JPS57192228A (en) | 1981-05-21 | 1981-05-21 | Production of sintered ore |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57192228A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60248826A (en) * | 1984-05-24 | 1985-12-09 | Nippon Steel Corp | Production of sintered raw material of iron ore |
WO1994014987A1 (en) * | 1992-12-24 | 1994-07-07 | Bhp Iron Ore Pty. Ltd. | Mineral processing |
CN1306308C (en) * | 2001-12-07 | 2007-03-21 | 奥林巴斯株式会社 | Microscope stage |
CN104313315A (en) * | 2014-10-14 | 2015-01-28 | 首钢总公司 | Sinter pre-pelletizing method capable of improving cooling efficiency of ring cooler |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50104102A (en) * | 1974-01-24 | 1975-08-16 | ||
JPS5362716A (en) * | 1976-11-17 | 1978-06-05 | Nippon Kokan Kk <Nkk> | Recycling method for lime cake |
-
1981
- 1981-05-21 JP JP7576681A patent/JPS57192228A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50104102A (en) * | 1974-01-24 | 1975-08-16 | ||
JPS5362716A (en) * | 1976-11-17 | 1978-06-05 | Nippon Kokan Kk <Nkk> | Recycling method for lime cake |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60248826A (en) * | 1984-05-24 | 1985-12-09 | Nippon Steel Corp | Production of sintered raw material of iron ore |
JPS6317897B2 (en) * | 1984-05-24 | 1988-04-15 | Nippon Steel Corp | |
WO1994014987A1 (en) * | 1992-12-24 | 1994-07-07 | Bhp Iron Ore Pty. Ltd. | Mineral processing |
CN1306308C (en) * | 2001-12-07 | 2007-03-21 | 奥林巴斯株式会社 | Microscope stage |
CN104313315A (en) * | 2014-10-14 | 2015-01-28 | 首钢总公司 | Sinter pre-pelletizing method capable of improving cooling efficiency of ring cooler |
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