JPS5743921A - Operating method for bottom-blown oxygen converter - Google Patents
Operating method for bottom-blown oxygen converterInfo
- Publication number
- JPS5743921A JPS5743921A JP11952080A JP11952080A JPS5743921A JP S5743921 A JPS5743921 A JP S5743921A JP 11952080 A JP11952080 A JP 11952080A JP 11952080 A JP11952080 A JP 11952080A JP S5743921 A JPS5743921 A JP S5743921A
- Authority
- JP
- Japan
- Prior art keywords
- refining
- steel
- final period
- tuyere
- flow rate
- 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 contrive to enhance the efficiency of decarburization particularly in the final period of blow refining by increasing the flow rate of a hydrocarbon gas blown- in in the final period of blow refining in which the C content of the molten steel is decreases to 0.1% or below, when refining a steel by blowing-in O2 and the hydrocarbon gas through a double-walled cylindrical tuyere provided at the bottom of a converter. CONSTITUTION:The steel is refined by simultaneously blowing-in a refining O2 gas through an inner pipe of the double-walled cylindrical tuyere provided at the bottom of the converter and blowing-in a tuyere-cooling gas based on a hydrocarbon such as propane through an outer pipe of the tuyere. In the final period of the blow refining in which the C content of the molten steel is reduced to 0.1% or below, the steel in the low carbon region is refined by increasing the flow rate of the blown-in hydrocarbon gas relative to the flow rate of O2 within the range of not more than 10%. As a result, the efficiency of decarburization in the final period of blow refining is enhanced and the iron content of the slag is lowered.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11952080A JPS5743921A (en) | 1980-08-29 | 1980-08-29 | Operating method for bottom-blown oxygen converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11952080A JPS5743921A (en) | 1980-08-29 | 1980-08-29 | Operating method for bottom-blown oxygen converter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5743921A true JPS5743921A (en) | 1982-03-12 |
JPS629644B2 JPS629644B2 (en) | 1987-03-02 |
Family
ID=14763301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11952080A Granted JPS5743921A (en) | 1980-08-29 | 1980-08-29 | Operating method for bottom-blown oxygen converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5743921A (en) |
-
1980
- 1980-08-29 JP JP11952080A patent/JPS5743921A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS629644B2 (en) | 1987-03-02 |
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