JPS5565306A - Restraining method for propagation of crack formed in blast furnace shell - Google Patents
Restraining method for propagation of crack formed in blast furnace shellInfo
- Publication number
- JPS5565306A JPS5565306A JP13747278A JP13747278A JPS5565306A JP S5565306 A JPS5565306 A JP S5565306A JP 13747278 A JP13747278 A JP 13747278A JP 13747278 A JP13747278 A JP 13747278A JP S5565306 A JPS5565306 A JP S5565306A
- Authority
- JP
- Japan
- Prior art keywords
- crack
- propagation
- furnace
- shell
- blast furnace
- 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
- Blast Furnaces (AREA)
Abstract
PURPOSE: To restrain the propagation of a crack described in the title so as to lengthen the life of a blast furnace body, by making stop holes at the both ends of the crack formed in the iron shell, by covering the iron shell surface including the crack with closed box-shaped vessel, and by maintaining the press. in the vessel higher than that in the furnace.
CONSTITUTION: When a crack 4 is formed in the furnace shell, stop holes 10 are first made at the both ends of the crack to prevent the propagation of the crack 4. Then the furnace shell surface including the cracked portion is covered with an iron vessel 11 of closed box shape for repairment to form a space 15 between the furnace shell 1 and the vessel 11. N2, Ar, or blast furnace gas is introduced into the space 15 through an inlet 12 to maintain the press. of the space 15 higher than that of the blast furnace, hereby preventing the jetting out of the furnace gas so as to reduce the thermal load given to the shell 1, and to stop the propagation of the crack 4. The propagation of the crack is checked periodically through an observing window 14.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13747278A JPS5565306A (en) | 1978-11-08 | 1978-11-08 | Restraining method for propagation of crack formed in blast furnace shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13747278A JPS5565306A (en) | 1978-11-08 | 1978-11-08 | Restraining method for propagation of crack formed in blast furnace shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5565306A true JPS5565306A (en) | 1980-05-16 |
Family
ID=15199399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13747278A Pending JPS5565306A (en) | 1978-11-08 | 1978-11-08 | Restraining method for propagation of crack formed in blast furnace shell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5565306A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007216313A (en) * | 2006-02-14 | 2007-08-30 | Univ Of Ryukyus | Crack progress inhibiting method |
| CN114350868A (en) * | 2022-01-12 | 2022-04-15 | 新疆八一钢铁股份有限公司 | Temporary plugging device and plugging method for blast furnace shell cracks |
-
1978
- 1978-11-08 JP JP13747278A patent/JPS5565306A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007216313A (en) * | 2006-02-14 | 2007-08-30 | Univ Of Ryukyus | Crack progress inhibiting method |
| JP4706024B2 (en) * | 2006-02-14 | 2011-06-22 | 国立大学法人 琉球大学 | Crack growth suppression method |
| CN114350868A (en) * | 2022-01-12 | 2022-04-15 | 新疆八一钢铁股份有限公司 | Temporary plugging device and plugging method for blast furnace shell cracks |
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