JPS56150117A - Refining method of molten steel in vessel - Google Patents
Refining method of molten steel in vesselInfo
- Publication number
- JPS56150117A JPS56150117A JP5177280A JP5177280A JPS56150117A JP S56150117 A JPS56150117 A JP S56150117A JP 5177280 A JP5177280 A JP 5177280A JP 5177280 A JP5177280 A JP 5177280A JP S56150117 A JPS56150117 A JP S56150117A
- Authority
- JP
- Japan
- Prior art keywords
- molten steel
- molten
- slag
- laddle
- steel
- 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 produce clean steel containing reduced amounts of sulfer, hydrogen, oxygen and the like by a method wherein the molten steel in a closed vessel is stirred in an atmosphere at a reduced pressure by blowing an inert gas into the molten steel through a lance.
CONSTITUTION: The molten steel 4 is placed in a laddle 2 fitted airtightly with a lid 2a, then a deoxidizer, lime, slag-forming materials and the like are charged into the laddle 2 to form molten slag 5. The temperature of the molten steel 4 is raised by heating by an electrode 3, and while evacuating the laddle 2 down to about 0.1torr. through a vent pipe 6 provided at the lid 2a, inert Ar gas is blown into the molten steel 4 through the lance 1 to stirr the molten steel 4 and the molten slag 5, so that the molten steel is converted into the clean steel containing reduced amounts of sulfur, hydrogen and oxygen as the result of desulfurization by the molten slag and dehydrogenation and deoxidation by the Ar gas.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55051772A JPS6040490B2 (en) | 1980-04-21 | 1980-04-21 | Method for refining molten steel in a container |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55051772A JPS6040490B2 (en) | 1980-04-21 | 1980-04-21 | Method for refining molten steel in a container |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56150117A true JPS56150117A (en) | 1981-11-20 |
JPS6040490B2 JPS6040490B2 (en) | 1985-09-11 |
Family
ID=12896234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55051772A Expired JPS6040490B2 (en) | 1980-04-21 | 1980-04-21 | Method for refining molten steel in a container |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6040490B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0087328A1 (en) * | 1982-01-22 | 1983-08-31 | Union Carbide Corporation | Process to produce low hydrogen steel by argon-oxygen decarburization |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS502617A (en) * | 1973-04-28 | 1975-01-11 |
-
1980
- 1980-04-21 JP JP55051772A patent/JPS6040490B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS502617A (en) * | 1973-04-28 | 1975-01-11 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0087328A1 (en) * | 1982-01-22 | 1983-08-31 | Union Carbide Corporation | Process to produce low hydrogen steel by argon-oxygen decarburization |
Also Published As
Publication number | Publication date |
---|---|
JPS6040490B2 (en) | 1985-09-11 |
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