JPS5638411A - Steel making by converter - Google Patents
Steel making by converterInfo
- Publication number
- JPS5638411A JPS5638411A JP11349779A JP11349779A JPS5638411A JP S5638411 A JPS5638411 A JP S5638411A JP 11349779 A JP11349779 A JP 11349779A JP 11349779 A JP11349779 A JP 11349779A JP S5638411 A JPS5638411 A JP S5638411A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- converter
- blown
- molten steel
- tuyere
- 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
- 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
- C21C5/30—Regulating or controlling the blowing
- C21C5/35—Blowing from above and through the bath
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
Abstract
PURPOSE:To reduce the amount of the other inert gas used for cutting down the operation cost by using LD gas recovered from converter as a stirring gas for the converter in the operation of a large-size top-blown rotary converter provided with bottom tuyere. CONSTITUTION:Steel scrap or molten pig iron is charged into the large-size top- blown rotary converter 1 provided with the bottom tuyere 7 and pure oxygen is blown upwards from the lance 2 for refining in order to manufacture molten steel. In this case, a stirring gas for molten steel 1 is blown from the bottom tuyere 7 into the converter to sufficiently stir the molten steel jointly with oxygen jet from the lance 2 in order to accelerate the refining reaction, where the dust in the LD gas discharged from the converter 1 is removed; the gas is cooled, and then stored in the tank 6 through the flue 3, the Venturi tube 4, and the blower 5, and then blown into the molten steel through the bottom tuyere 7 by means of the pump 8. Or, in the refining process where LD gas can be recovered, LD gas is directly taken from the flue by opening the valve 9 and then blown through the tuyere 7. Thereby, the costly use of Ar, N2, or other inert gases can be greatly reduced, permitting the operating cost to be cut down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11349779A JPS5638411A (en) | 1979-09-06 | 1979-09-06 | Steel making by converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11349779A JPS5638411A (en) | 1979-09-06 | 1979-09-06 | Steel making by converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5638411A true JPS5638411A (en) | 1981-04-13 |
| JPS6338404B2 JPS6338404B2 (en) | 1988-07-29 |
Family
ID=14613804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11349779A Granted JPS5638411A (en) | 1979-09-06 | 1979-09-06 | Steel making by converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5638411A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61284516A (en) * | 1985-06-12 | 1986-12-15 | Kawasaki Steel Corp | Method for supplying stirring gas to converter |
-
1979
- 1979-09-06 JP JP11349779A patent/JPS5638411A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61284516A (en) * | 1985-06-12 | 1986-12-15 | Kawasaki Steel Corp | Method for supplying stirring gas to converter |
| JPS6360090B2 (en) * | 1985-06-12 | 1988-11-22 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6338404B2 (en) | 1988-07-29 |
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