JPS57194204A - Converter blowing method - Google Patents
Converter blowing methodInfo
- Publication number
- JPS57194204A JPS57194204A JP7858881A JP7858881A JPS57194204A JP S57194204 A JPS57194204 A JP S57194204A JP 7858881 A JP7858881 A JP 7858881A JP 7858881 A JP7858881 A JP 7858881A JP S57194204 A JPS57194204 A JP S57194204A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- furnace
- tuyeres
- circle
- subnozzle
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/34—Blowing through the bath
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/32—Blowing from above
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
Abstract
PURPOSE:To improve the insufficient agitation of a steel bath and to accelerate the secondary combustion of CO by top blowing O2 to the molten steel from a lance nozzle provided with a subnozzle on the lateral side of a main nozzle and bottom blowing an agitating gas through tuyeres provided below the steel bath level of a furnace body. CONSTITUTION:The angle theta of the above-described subnozzle 2 is set larger than the angle of a main nozzle 1, and the extension line of the hole of the nozzle 2 is located nearer the centerline C side of the furnace body than the boundary between the surface of the molten steel in the furnace and the furnace wall. On the other hand, tuyeres 3 are provided between the circle that the points of intersection of the extension lines of the O2 jets from the main nozzle 1 and the furnace bottom draw and the circle that the points of 1/2 the distances from said circle up to the inside circumference of the furnace wall draw. O2 is top blown through the nozzle 1 and the nozzle 2 and an agitating gas is bottom blown through the tuyeres 3 by the above-mentioned constitution. As a result, the gaseous CO generated during decarburization is burned positively to CO2 and the heat level in the furnace is increased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7858881A JPS57194204A (en) | 1981-05-26 | 1981-05-26 | Converter blowing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7858881A JPS57194204A (en) | 1981-05-26 | 1981-05-26 | Converter blowing method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57194204A true JPS57194204A (en) | 1982-11-29 |
Family
ID=13666065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7858881A Pending JPS57194204A (en) | 1981-05-26 | 1981-05-26 | Converter blowing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57194204A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5014964A (en) * | 1973-06-12 | 1975-02-17 | ||
JPS53102205A (en) * | 1977-02-19 | 1978-09-06 | Nippon Kokan Kk <Nkk> | Duplex lange nozzle for oxygen top-blown converter |
-
1981
- 1981-05-26 JP JP7858881A patent/JPS57194204A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5014964A (en) * | 1973-06-12 | 1975-02-17 | ||
JPS53102205A (en) * | 1977-02-19 | 1978-09-06 | Nippon Kokan Kk <Nkk> | Duplex lange nozzle for oxygen top-blown converter |
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