JPS54125106A - Reducing blowing out method for blast furnace - Google Patents
Reducing blowing out method for blast furnaceInfo
- Publication number
- JPS54125106A JPS54125106A JP3370678A JP3370678A JPS54125106A JP S54125106 A JPS54125106 A JP S54125106A JP 3370678 A JP3370678 A JP 3370678A JP 3370678 A JP3370678 A JP 3370678A JP S54125106 A JPS54125106 A JP S54125106A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- nozzles
- blast furnace
- steam
- blowing out
- 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
Landscapes
- Manufacture Of Iron (AREA)
Abstract
PURPOSE: To prevent explosion surely, by installing plural nozzles, vertically arranged at intervals, at the wall of blast furnace shaft, and by blowing, at the time of reducing blowing out, steam and/or N2 into the furnace through the nozzles at the upper side of a descending stock line.
CONSTITUTION: Nozzle 2aW2d are installed in position A, B, C, D, arranged vertically at intervals, at the furnace wall of the shaft 13 of a blast furnace 1. The nozzles are connected respectively to a steam source 5 through cut-off cocks 4aW4d and to a N2 gas source 7 through cut-off cocks 6aW6d. At the time of reducing blowing out, the blast furnace is filled with coke to its throat, then molten iron is tapped through a tap hole 16, and water is sprayed through spray nozzles 8. When the stock line descends to a line L1 which is lower than the position A, steam is blown into the furnace through the nozzle 2a by opening the cock 4a. When H2 contained in the top gas is increased to a prescribed quantity or more, N2 is blown into the furnace by opening the cock 6a. As the stock line descends sucessively, the furnace is treated in the similar manner by introducing steam and/or N2 through the nozzles 2b, 2c, 2d.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3370678A JPS6034602B2 (en) | 1978-03-24 | 1978-03-24 | Blast furnace reduced-scale blowdown method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3370678A JPS6034602B2 (en) | 1978-03-24 | 1978-03-24 | Blast furnace reduced-scale blowdown method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54125106A true JPS54125106A (en) | 1979-09-28 |
| JPS6034602B2 JPS6034602B2 (en) | 1985-08-09 |
Family
ID=12393854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3370678A Expired JPS6034602B2 (en) | 1978-03-24 | 1978-03-24 | Blast furnace reduced-scale blowdown method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6034602B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56166313A (en) * | 1980-05-27 | 1981-12-21 | Nippon Steel Corp | Method for preventing explosion during reduction of stock line and blowing down of blast furnace |
| KR100917380B1 (en) | 2008-03-26 | 2009-09-16 | 주식회사 포스코 | The apparatus for preventing a water jet line of a furnace from being obstructed |
| CN109295271A (en) * | 2018-11-27 | 2019-02-01 | 南京钢铁股份有限公司 | A kind of method that blast furnace stockline dropping blowing out extends the gas recovery time |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109321699B (en) * | 2018-11-27 | 2021-05-11 | 南京钢铁股份有限公司 | Method for burning dead coke pile in tuyere area without discharging residual iron during shutdown of blast furnace empty material line |
-
1978
- 1978-03-24 JP JP3370678A patent/JPS6034602B2/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56166313A (en) * | 1980-05-27 | 1981-12-21 | Nippon Steel Corp | Method for preventing explosion during reduction of stock line and blowing down of blast furnace |
| KR100917380B1 (en) | 2008-03-26 | 2009-09-16 | 주식회사 포스코 | The apparatus for preventing a water jet line of a furnace from being obstructed |
| CN109295271A (en) * | 2018-11-27 | 2019-02-01 | 南京钢铁股份有限公司 | A kind of method that blast furnace stockline dropping blowing out extends the gas recovery time |
| CN109295271B (en) * | 2018-11-27 | 2020-07-14 | 南京钢铁股份有限公司 | Method for prolonging time for recovering coal gas by blowing out blast furnace empty material line |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6034602B2 (en) | 1985-08-09 |
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