JPS6475616A - Slag refining method in molten iron pretreatment - Google Patents
Slag refining method in molten iron pretreatmentInfo
- Publication number
- JPS6475616A JPS6475616A JP23092087A JP23092087A JPS6475616A JP S6475616 A JPS6475616 A JP S6475616A JP 23092087 A JP23092087 A JP 23092087A JP 23092087 A JP23092087 A JP 23092087A JP S6475616 A JPS6475616 A JP S6475616A
- Authority
- JP
- Japan
- Prior art keywords
- molten iron
- slag
- converter
- blowing
- generated
- 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 effectively utilize generated slag in a converter by blowing molten iron pretreated for reducing P in a converter under less-slag, charging Mn- contained material in the converter and using the generated slag to pretreatment of the molten iron of the blast furnace. CONSTITUTION:While blowing CaO powder into the molten iron 1 charged in the molten iron 1 ladle 2 with a lance 3, oxygen gas is blown with a lance 4 to promote the dephosphorizing reaction by oxydizing, and this pretreated molten iron 1 is introduced into the converter and Mn-contained material is charged in the furnace together with a little quantity of slag making material to execute the less-slag blowing. The slag 5 generated by the less-slag blowing is charged into the molten iron 1 tapped in the ladle 2 from the blast furnace together with a little quantity of lime, etc., to pretreat the molten iron 1. By this method, the lime consumption at the time of pretreating the molten iron 1 can be reduced and yield of Mn is improved and further, protection of furnace brick in the converter is strengthened and the generated slag 5 in the converter as industrial waste can be effectively utilized.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23092087A JPS6475616A (en) | 1987-09-17 | 1987-09-17 | Slag refining method in molten iron pretreatment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23092087A JPS6475616A (en) | 1987-09-17 | 1987-09-17 | Slag refining method in molten iron pretreatment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6475616A true JPS6475616A (en) | 1989-03-22 |
Family
ID=16915352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23092087A Pending JPS6475616A (en) | 1987-09-17 | 1987-09-17 | Slag refining method in molten iron pretreatment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6475616A (en) |
-
1987
- 1987-09-17 JP JP23092087A patent/JPS6475616A/en active Pending
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