JPS57177914A - Removing method for gas and inclusion from molten steel - Google Patents
Removing method for gas and inclusion from molten steelInfo
- Publication number
- JPS57177914A JPS57177914A JP6326081A JP6326081A JPS57177914A JP S57177914 A JPS57177914 A JP S57177914A JP 6326081 A JP6326081 A JP 6326081A JP 6326081 A JP6326081 A JP 6326081A JP S57177914 A JPS57177914 A JP S57177914A
- Authority
- JP
- Japan
- Prior art keywords
- molten steel
- inert gas
- vessel
- fall
- 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
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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
PURPOSE:To remove gases and inclusions from molten steel simultaneously in the stage of transferring the molten steel from one vessel to another vessel by blowing an inert gas and setting the amt. of said gas and the fall of the molten steel at specific values or above. CONSTITUTION:In the stage of flowing and moving molten steel from one vessel into another vessel, the molten steel is flowed and moved while an inert gas of 0.01-1.0Nm<2>t-steel is blown from near the steel outflow hole of the one vessel. In this case, the fall of the molten steel to the other vessel is assured at <=2.0m. Then, the foam diameter of the inert gas is reduced considerably, and the degassing and inclusion removing effects of the molten steel are shown. Here, if the fall of the molten steel is <=2m, the size of the inert gas foam increases sharply, and when the fall is large, the blowing amt. of the inert gas can be decreased but it is required to be the lower limit or above, and the upper limit or above is infeasible in practice. If powder of CaO, CaCO3, etc. is blown together with the inert gas, the inclusion removal effect is much improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6326081A JPS57177914A (en) | 1981-04-28 | 1981-04-28 | Removing method for gas and inclusion from molten steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6326081A JPS57177914A (en) | 1981-04-28 | 1981-04-28 | Removing method for gas and inclusion from molten steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57177914A true JPS57177914A (en) | 1982-11-01 |
| JPS6157887B2 JPS6157887B2 (en) | 1986-12-09 |
Family
ID=13224120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6326081A Granted JPS57177914A (en) | 1981-04-28 | 1981-04-28 | Removing method for gas and inclusion from molten steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57177914A (en) |
-
1981
- 1981-04-28 JP JP6326081A patent/JPS57177914A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6157887B2 (en) | 1986-12-09 |
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