JPS6439314A - Method for refining steel - Google Patents
Method for refining steelInfo
- Publication number
- JPS6439314A JPS6439314A JP19422787A JP19422787A JPS6439314A JP S6439314 A JPS6439314 A JP S6439314A JP 19422787 A JP19422787 A JP 19422787A JP 19422787 A JP19422787 A JP 19422787A JP S6439314 A JPS6439314 A JP S6439314A
- Authority
- JP
- Japan
- Prior art keywords
- oxygen source
- powdered solid
- solid oxygen
- molten steel
- gas
- 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
- 229910000831 Steel Inorganic materials 0.000 title abstract 4
- 239000010959 steel Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 2
- 238000007670 refining Methods 0.000 title 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 4
- 239000001301 oxygen Substances 0.000 abstract 4
- 229910052760 oxygen Inorganic materials 0.000 abstract 4
- 239000007787 solid Substances 0.000 abstract 4
- 239000002184 metal Substances 0.000 abstract 3
- 229910052751 metal Inorganic materials 0.000 abstract 3
- 239000012159 carrier gas Substances 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 2
- 150000002739 metals Chemical class 0.000 abstract 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract 1
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 238000007664 blowing Methods 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 229910001882 dioxygen Inorganic materials 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 239000004576 sand Substances 0.000 abstract 1
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
PURPOSE:To shorten decarburizing time and also to control the amount of oxidation of valuable metals such as Cr, by feeding a powdered solid oxygen source on a carrier-gas stream to a burner while blowing gases into molten steel and agitating the molten steel so as to blow the above powdered solid oxygen source against a bath surface together with flames. CONSTITUTION:An oxygen gas and an Ar gas are blow through tuyeres in the bottom into molten steel in a furnace, and the molten metal is agitated. Simultaneously, a powdered solid oxygen source, such as chromite sand and mill scale, is fed on a carrier-gas stream to a burner provided to the upper part of the furnace, by which the powdered solid oxygen source is blown together with flames against the steel-bath surface. By this method, decarburizing time can be shortened and the additive quantity of a reducing agent for re-reducing valuable metals can be reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19422787A JPS6439314A (en) | 1987-08-03 | 1987-08-03 | Method for refining steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19422787A JPS6439314A (en) | 1987-08-03 | 1987-08-03 | Method for refining steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6439314A true JPS6439314A (en) | 1989-02-09 |
Family
ID=16321073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19422787A Pending JPS6439314A (en) | 1987-08-03 | 1987-08-03 | Method for refining steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6439314A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010522824A (en) * | 2007-03-29 | 2010-07-08 | エム．カー．エヌ．テクノロジース ゲゼルシャフト ミット ベシュレンクテル ハフツング | Melt metallurgy process for the production of metal melts and transition metal-containing additive materials used therefor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61136613A (en) * | 1984-12-06 | 1986-06-24 | Nippon Steel Corp | Vacuum decarburization method of molten steel |
-
1987
- 1987-08-03 JP JP19422787A patent/JPS6439314A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61136613A (en) * | 1984-12-06 | 1986-06-24 | Nippon Steel Corp | Vacuum decarburization method of molten steel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010522824A (en) * | 2007-03-29 | 2010-07-08 | エム．カー．エヌ．テクノロジース ゲゼルシャフト ミット ベシュレンクテル ハフツング | Melt metallurgy process for the production of metal melts and transition metal-containing additive materials used therefor |
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