JPS5743920A - Method for blow refining in bottom-blown converter - Google Patents
Method for blow refining in bottom-blown converterInfo
- Publication number
- JPS5743920A JPS5743920A JP11900780A JP11900780A JPS5743920A JP S5743920 A JPS5743920 A JP S5743920A JP 11900780 A JP11900780 A JP 11900780A JP 11900780 A JP11900780 A JP 11900780A JP S5743920 A JPS5743920 A JP S5743920A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- converter
- refining
- blow
- tuyere
- 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
Abstract
PURPOSE:To suitably prevent the occurrence of the initial spouting and dephosphorize advantageously by a method wherein the pattern of blowing a lime powder into a molten metal through a tuyere provided at the furnace bottom is specified particularly during the period from the starting of blow refining to the completion of desiliconization, when blow-refining a molten pig iron by a bottom-blown converter. CONSTITUTION:An oxygen gas is fed into the molten metal in the converter 1 through the tuyere 2 provided at the bottom, and pulverulent burnt lime in an intermediate tank 5 is fed into the molten metal concurrently with the gas after passing a measuring tank 6 and a gate valve 7. The amount of the lime powder blown into the molten metal is specified in the period from the starting of the blow refining to the completion of the desiliconization in such a manner as to satisfy the relation represented by the equation in accordance with the basicity and SiO2 content of the slag which is formed in the converter 1 during said period. By this specifying the pattern of blowing the lime powder through the tuyere 2, the initial spouting is prevented securely. Accordingly, it is possible to operate the bottom-blown converter in a particularly stable manner.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11900780A JPS5743920A (en) | 1980-08-30 | 1980-08-30 | Method for blow refining in bottom-blown converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11900780A JPS5743920A (en) | 1980-08-30 | 1980-08-30 | Method for blow refining in bottom-blown converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5743920A true JPS5743920A (en) | 1982-03-12 |
Family
ID=14750680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11900780A Pending JPS5743920A (en) | 1980-08-30 | 1980-08-30 | Method for blow refining in bottom-blown converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5743920A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59168493A (en) * | 1983-03-16 | 1984-09-22 | ヤマハ株式会社 | Musical tone waveform generator |
JPS61283098A (en) * | 1985-06-07 | 1986-12-13 | Casio Comput Co Ltd | Waveform information reader |
JP2008149425A (en) * | 2006-12-19 | 2008-07-03 | Nippon Steel Corp | Positioning method of steel member end surface, and stopper equipment |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53134715A (en) * | 1971-12-07 | 1978-11-24 | Maximilianshuette Eisenwerk | Method of smelting lowwphosphrous pig iron into steel |
JPS55107715A (en) * | 1979-02-14 | 1980-08-19 | Kawasaki Steel Corp | Blowing method of dephosphorizer to bottom blowing converter |
-
1980
- 1980-08-30 JP JP11900780A patent/JPS5743920A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53134715A (en) * | 1971-12-07 | 1978-11-24 | Maximilianshuette Eisenwerk | Method of smelting lowwphosphrous pig iron into steel |
JPS55107715A (en) * | 1979-02-14 | 1980-08-19 | Kawasaki Steel Corp | Blowing method of dephosphorizer to bottom blowing converter |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59168493A (en) * | 1983-03-16 | 1984-09-22 | ヤマハ株式会社 | Musical tone waveform generator |
JPH0563799B2 (en) * | 1983-03-16 | 1993-09-13 | Yamaha Corp | |
JPS61283098A (en) * | 1985-06-07 | 1986-12-13 | Casio Comput Co Ltd | Waveform information reader |
JPH0799476B2 (en) * | 1985-06-07 | 1995-10-25 | カシオ計算機株式会社 | Waveform information readout device |
JP2008149425A (en) * | 2006-12-19 | 2008-07-03 | Nippon Steel Corp | Positioning method of steel member end surface, and stopper equipment |
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