JPS57137409A - Out-of-furnace treatment of molten metal by blowing of refining agent by carrier gas - Google Patents
Out-of-furnace treatment of molten metal by blowing of refining agent by carrier gasInfo
- Publication number
- JPS57137409A JPS57137409A JP2083281A JP2083281A JPS57137409A JP S57137409 A JPS57137409 A JP S57137409A JP 2083281 A JP2083281 A JP 2083281A JP 2083281 A JP2083281 A JP 2083281A JP S57137409 A JPS57137409 A JP S57137409A
- Authority
- JP
- Japan
- Prior art keywords
- lance
- carrier gas
- molten metal
- blowing
- refining agent
- 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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
PURPOSE:To maintain treatment reaction at a high rate over the entire period of refining in an injection system by regulating the blowing rates of a refining agent and a carrier gas and the immersion depth of a lance. CONSTITUTION:A desulfurizing agent is blown through an immersion lance 2 into the molten metal in a torpede car 1 by means of a carrier gas with a powder and granule transfer device 3. At this time, the oscillations of the lance 2 measured momentarily with a vibrometer 6 fitted to the lance 2 are recorded in a display device 8 through a frequency selector 7. According to the change in the oscillation waveforms displayed in the device 8, regulating valves 4, 5 are controlled to regulate the blowing rates of the desulfurizing agent and the carrier gas as well as their solid/gas ratio; at the same time, the lance 2 is adjusted to the immersion depth at which the efficiency of reaction is best by using a lance elevating installation 9. Thereby, the out-of-furnace treatment efficiency of molten metal is improved considerably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2083281A JPS57137409A (en) | 1981-02-17 | 1981-02-17 | Out-of-furnace treatment of molten metal by blowing of refining agent by carrier gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2083281A JPS57137409A (en) | 1981-02-17 | 1981-02-17 | Out-of-furnace treatment of molten metal by blowing of refining agent by carrier gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57137409A true JPS57137409A (en) | 1982-08-25 |
Family
ID=12038025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2083281A Pending JPS57137409A (en) | 1981-02-17 | 1981-02-17 | Out-of-furnace treatment of molten metal by blowing of refining agent by carrier gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57137409A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013028844A (en) * | 2011-07-29 | 2013-02-07 | Jfe Steel Corp | Dephosphorization pretreatment method of molten iron |
-
1981
- 1981-02-17 JP JP2083281A patent/JPS57137409A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013028844A (en) * | 2011-07-29 | 2013-02-07 | Jfe Steel Corp | Dephosphorization pretreatment method of molten iron |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES486145A1 (en) | Argon in the basic oxygen process to control slopping | |
| JPS57137409A (en) | Out-of-furnace treatment of molten metal by blowing of refining agent by carrier gas | |
| SU592366A3 (en) | Method of converting iron to steel | |
| GB1534528A (en) | Method and apparatus for producing slag ballast | |
| MX163928B (en) | METHOD FOR PRODUCING STEEL IN A CONTAINER BLOWN WITH OXYGEN BY THE HIGH PART | |
| JPS5757819A (en) | Converter steel making method | |
| JPS57137413A (en) | Production of molten steel containing nitrogen | |
| JPS57137415A (en) | Steel making method for chromium-containing steel | |
| JPS5589416A (en) | Preparation of nitrogen containing steel | |
| BE587838A (en) | Method and device for improving the thermal efficiency of the refining of pig iron by jet of pure oxygen. | |
| JPS5565313A (en) | Steel manufacture with top blown oxygen | |
| JPS52106397A (en) | Treatment of molten blast furnace slag | |
| JPS57101611A (en) | Continuous desulfurization apparatus for spheroidal graphite cast iron | |
| JPS53114709A (en) | Blowing apparatus | |
| JPS55125212A (en) | Method and apparatus for reducing iron oxide | |
| JPS5741310A (en) | Method and device for adding alloy iron during tapping of converter | |
| JPS56150118A (en) | Refining method of molten steel in vessel | |
| JPS5311113A (en) | Desulfurization method | |
| JPS5330494A (en) | Treating method for blast furnace slag | |
| JPS57181305A (en) | Controlling method for heat of hearth of blast furnace | |
| JPS5373493A (en) | Method and apparatus for supplying molten slag | |
| JPS56112411A (en) | Blowing method of top-blown converter | |
| GB1494904A (en) | Method of refining metal | |
| JPS5311812A (en) | Reforming method for molten pig iron of blast furnace | |
| GB863018A (en) | Method of and apparatus for continuous pre-refining of molten pig-iron |