JPS558401A - Blasting tuyere for oxygen converter - Google Patents
Blasting tuyere for oxygen converterInfo
- Publication number
- JPS558401A JPS558401A JP7850878A JP7850878A JPS558401A JP S558401 A JPS558401 A JP S558401A JP 7850878 A JP7850878 A JP 7850878A JP 7850878 A JP7850878 A JP 7850878A JP S558401 A JPS558401 A JP S558401A
- Authority
- JP
- Japan
- Prior art keywords
- tuyere
- tube
- outer tube
- refractory
- protective medium
- 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
-
- 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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/48—Bottoms or tuyéres of converters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
Abstract
PURPOSE:To improve the cooling effect of the protective medium like as hydrocarbon, etc., for the tuyere, and to diminish the damage of the refractory material of the tuyere and its surroundings, by forming the refractory layer on the inner surface of the outer tube of the double tube tuyere of the bottom blasting converter, and by making the internal tube of the metal of large thermal conductivity. CONSTITUTION:The tuyere 1 of the bottom blasting converter is constructed to a double tube type, whose inner tube is made of the tough pitch copper. The outer tube 3 is made of the mild steel, and the porous ceramic made refractory tube 4 mainly composed of 60%Al2O3 and 30%SiO2 is closely inserted into the inner surface of the outer tube 3. The smelting oxygen from the inner hole 5 of the inner tube 2, and the hydrocarbonaceous gas as the protective medium from the ring type gap 6 between the inner tubr 2 and the outer tube 3, are injeted. The protective medium gas, under existence of the refractory tube 4, is kept under the decomposition temperature while passing through the tuyere, and is suddenly heated to decompose at the tip of tuyere; and the tuyere inself cools the refractory material around the outer tube 3; as a result, a small amount of gas protects the tuyere and the refractory material from the thermal damage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7850878A JPS558401A (en) | 1978-06-30 | 1978-06-30 | Blasting tuyere for oxygen converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7850878A JPS558401A (en) | 1978-06-30 | 1978-06-30 | Blasting tuyere for oxygen converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS558401A true JPS558401A (en) | 1980-01-22 |
Family
ID=13663874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7850878A Pending JPS558401A (en) | 1978-06-30 | 1978-06-30 | Blasting tuyere for oxygen converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS558401A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5976812A (en) * | 1982-10-26 | 1984-05-02 | Kawasaki Steel Corp | Tuyere for refining molten metal |
-
1978
- 1978-06-30 JP JP7850878A patent/JPS558401A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5976812A (en) * | 1982-10-26 | 1984-05-02 | Kawasaki Steel Corp | Tuyere for refining molten metal |
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