JPS5594428A - Preventing method for burnout of lining in furnace - Google Patents
Preventing method for burnout of lining in furnaceInfo
- Publication number
- JPS5594428A JPS5594428A JP257379A JP257379A JPS5594428A JP S5594428 A JPS5594428 A JP S5594428A JP 257379 A JP257379 A JP 257379A JP 257379 A JP257379 A JP 257379A JP S5594428 A JPS5594428 A JP S5594428A
- Authority
- JP
- Japan
- Prior art keywords
- sio
- converter
- steel
- mgo
- burnout
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
PURPOSE: To prevent the burnout of lining refractories of the converter by adding the MgO-contained slag forming agent so as to form 2MgO.SiO2 to a small amount of SiO2 formed in the converter at the time of producing steel by beforehand desiliconizing, desulfurizing and dephosphorizing raw material molten steel for steel making then decarbonization-refining the same in the converter.
CONSTITUTION: Molten iron as raw material for steel making is put in a reaction vessel of hermetic type groove shape and is oxidation-treated with alkali metal compounds such as Na2CO3 as flux, whereby its Si, P and S are beforehand removed and refinined. In this case, Si is removed down to about 0.20%. Next, this molten iron is separated from the molten slag and is put in a converter, where it is decarbonized by oxygen blowing and is refined to steel. At this time, the SiO2 amount formed through oxidation of about 0.20% of residual Si is calculated and the flux containing 80% or more of MgO such as magnesia clinker, magnesia brick scrap, etc. is added at such an amount at which 2MgO.SiO2 forms. The SiO2 forms the above-mentioned slag, thus it does not burnout the MgO-base refractory lining material of the converter.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP257379A JPS5594428A (en) | 1979-01-13 | 1979-01-13 | Preventing method for burnout of lining in furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP257379A JPS5594428A (en) | 1979-01-13 | 1979-01-13 | Preventing method for burnout of lining in furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5594428A true JPS5594428A (en) | 1980-07-17 |
Family
ID=11533105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP257379A Pending JPS5594428A (en) | 1979-01-13 | 1979-01-13 | Preventing method for burnout of lining in furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5594428A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017106109A (en) * | 2015-12-11 | 2017-06-15 | ポスコＰｏｓｃｏ | Converter refining method of stainless steel with reduced refractory corrosion of converter |
-
1979
- 1979-01-13 JP JP257379A patent/JPS5594428A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017106109A (en) * | 2015-12-11 | 2017-06-15 | ポスコＰｏｓｃｏ | Converter refining method of stainless steel with reduced refractory corrosion of converter |
| CN106868248A (en) * | 2015-12-11 | 2017-06-20 | 株式会社Posco | Reduce the stainless steel method of refining that the refractory body of converter corrodes |
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