JPS55138018A - Method of denitrifying and dephosphorizing chromium- containing molten iron of high carbon content - Google Patents
Method of denitrifying and dephosphorizing chromium- containing molten iron of high carbon contentInfo
- Publication number
- JPS55138018A JPS55138018A JP4344679A JP4344679A JPS55138018A JP S55138018 A JPS55138018 A JP S55138018A JP 4344679 A JP4344679 A JP 4344679A JP 4344679 A JP4344679 A JP 4344679A JP S55138018 A JPS55138018 A JP S55138018A
- Authority
- JP
- Japan
- Prior art keywords
- carbon content
- molten iron
- containing molten
- high carbon
- dephosphorizing
- 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
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
PURPOSE: To remove impurities such as N or P without decreasing the quantity of contained Cr, by adding Na2CO3 alone or Na2CO3 blended with a prescribed quantity of a basic oxide such as CaO, as a flux to Cr-containing molten iron of high carbon content saturated or almost saturated.
CONSTITUTION: After Cr-containing molten iron is produced, C is added to the iron so that the carbon content of the iron is made as high as saturated or almost saturated. Na2CO3 alone or Na2CO3 blended with at least one kind of basic oxide such as CaO or MgO is added as a flux to the Cr-containing molten iron of high carbon content. The quantity of the basic oxide is not larger than 50%, preferably 20% of the total flux. According to this method, denitrification and dephosphorization are performed simultaneously with desulfurization.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4344679A JPS55138018A (en) | 1979-04-09 | 1979-04-09 | Method of denitrifying and dephosphorizing chromium- containing molten iron of high carbon content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4344679A JPS55138018A (en) | 1979-04-09 | 1979-04-09 | Method of denitrifying and dephosphorizing chromium- containing molten iron of high carbon content |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55138018A true JPS55138018A (en) | 1980-10-28 |
| JPS5725612B2 JPS5725612B2 (en) | 1982-05-31 |
Family
ID=12663919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4344679A Granted JPS55138018A (en) | 1979-04-09 | 1979-04-09 | Method of denitrifying and dephosphorizing chromium- containing molten iron of high carbon content |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55138018A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5284113A (en) * | 1975-12-30 | 1977-07-13 | Nisshin Steel Co Ltd | Dephosphorising of molten pig iron containing cr |
| JPS5323816A (en) * | 1976-08-18 | 1978-03-04 | Nisshin Steel Co Ltd | Process for making low nitrogen alloy containing chrome by melting |
-
1979
- 1979-04-09 JP JP4344679A patent/JPS55138018A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5284113A (en) * | 1975-12-30 | 1977-07-13 | Nisshin Steel Co Ltd | Dephosphorising of molten pig iron containing cr |
| JPS5323816A (en) * | 1976-08-18 | 1978-03-04 | Nisshin Steel Co Ltd | Process for making low nitrogen alloy containing chrome by melting |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5725612B2 (en) | 1982-05-31 |
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