JPS6483606A - Smelting reduction method - Google Patents
Smelting reduction methodInfo
- Publication number
- JPS6483606A JPS6483606A JP62240183A JP24018387A JPS6483606A JP S6483606 A JPS6483606 A JP S6483606A JP 62240183 A JP62240183 A JP 62240183A JP 24018387 A JP24018387 A JP 24018387A JP S6483606 A JPS6483606 A JP S6483606A
- Authority
- JP
- Japan
- Prior art keywords
- iron
- bath
- tuyeres
- blown
- molten
- 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 Of Iron (AREA)
Abstract
PURPOSE:To produce pig iron from iron ore with good thermal efficiency without damaging tuyeres by charging iron ore, carbonaceous material and slag forming material into the iron bath in a converter type smelting furnace, stirring the iron bath and molten slag by an inert gas and blowing oxygen and auxiliary raw material powder from a top blowing lance into the bath. CONSTITUTION:The sintered iron ore, the carbonaceous material and the slag forming material such as lime are charged into a molten slag layer 12 on the iron bath 11 remaining in the smelting furnace 10 of the converter type. The inert gas such as Ar or N2 is simultaneously blown from the tuyeres 15, 16 at 0.5-3Nm<3>/min and 0.3-2 Nm<3>/min ratios per ton of the molten iron as the stirring gas to stir the molten slag 12 and the iron bath 11. O2 24 is blown from a nozzle 21 of the top blowing lance 20 into the iron bath to reduce the sintered ore with the carbonaceous material as fuel and reducing agent. The gaseous CO formed by the decarburization reaction by the O2 of the iron bath 11 is secondarily burned by the O2 25 from the nozzle 22. The auxiliary raw materials such as powdery carbonaceous material and slag forming material are blown at need from the nozzle 23. Since only the inert gas is blown from the tuyeres 1, 16, the tuyeres are not damaged by the powder and the molten iron is produced from the iron ore with the good thermal efficiency by the heat generation of the secondary combustion of CO.
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62240183A JPS6483606A (en) | 1987-09-25 | 1987-09-25 | Smelting reduction method |
| US07/246,456 US4936908A (en) | 1987-09-25 | 1988-09-19 | Method for smelting and reducing iron ores |
| AU22448/88A AU607807C (en) | 1987-09-25 | 1988-09-20 | Method for smelting and reducing iron ores and apparatus therefor |
| EP88115580A EP0308925B1 (en) | 1987-09-25 | 1988-09-22 | Method and apparatus for smelting and reducing iron ores |
| AT88115580T ATE88218T1 (en) | 1987-09-25 | 1988-09-22 | METHOD AND APPARATUS FOR MELTING AND REDUCING IRON ORE. |
| DE88115580T DE3880245T2 (en) | 1987-09-25 | 1988-09-22 | Method and device for melting and reducing iron ores. |
| CA000578419A CA1336542C (en) | 1987-09-25 | 1988-09-23 | Method for smelting and reducing iron ores and apparatus therefor |
| KR1019880012423A KR910006005B1 (en) | 1987-09-25 | 1988-09-24 | Method for smelting and reducing iron ores |
| CN88106882A CN1014721B (en) | 1987-09-25 | 1988-09-24 | Method and apparatus for producing molten pig iron by reducing iron ore |
| BR888804958A BR8804958A (en) | 1987-09-25 | 1988-09-26 | PROCESS AND APPLIANCE FOR IRON ORE FOUNDATION AND REDUCTION |
| US07/503,805 US4988079A (en) | 1987-09-25 | 1990-04-03 | Apparatus for smelting and reducing iron ores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62240183A JPS6483606A (en) | 1987-09-25 | 1987-09-25 | Smelting reduction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6483606A true JPS6483606A (en) | 1989-03-29 |
Family
ID=17055702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62240183A Pending JPS6483606A (en) | 1987-09-25 | 1987-09-25 | Smelting reduction method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6483606A (en) |
-
1987
- 1987-09-25 JP JP62240183A patent/JPS6483606A/en active Pending
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