GB756429A - Process for dephosphorizing a ferrous metal, for example pig iron - Google Patents
Process for dephosphorizing a ferrous metal, for example pig ironInfo
- Publication number
- GB756429A GB756429A GB22004/52A GB2200452A GB756429A GB 756429 A GB756429 A GB 756429A GB 22004/52 A GB22004/52 A GB 22004/52A GB 2200452 A GB2200452 A GB 2200452A GB 756429 A GB756429 A GB 756429A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- added
- compound
- calcium
- metallic
- 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.)
- Expired
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)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
A process for dephosphorising ferrous metals containing carbon without substantially reducing the carbon content comprises introducing below the surface of the molten metal an oxidizing gas containing more than 22 per cent by volume of free oxygen and a metallic compound which reacts with oxidized phosphorus to form a metallic phosphate. The gas may be introduced into a ladle or other vessel through a pipe penetrating below the surface of the metal. Oxygen-enriched air with or without a proportion of carbon dioxide may be used. The metal may also be treated as it flows along a channel having dams to prevent slag passing along with the metal. The metal compound may be lime, limestone, magnesite, magnesia, burnt dolomite, soda, sodium silicate, or mixtures thereof or calcium ferrite or calcium-magnesium ferrite. The compound may be added in solid or liquid form or may be ground and added to the stream of oxidizing gas. Metallic calcium or magnesium may be added to the compound. Aluminium, silicon, or manganese may be added to the metal before blowing to improve the heat-producing properties.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE756429X | 1951-08-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB756429A true GB756429A (en) | 1956-09-05 |
Family
ID=20326602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22004/52A Expired GB756429A (en) | 1951-08-30 | 1952-09-01 | Process for dephosphorizing a ferrous metal, for example pig iron |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB756429A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2950186A (en) * | 1957-03-02 | 1960-08-23 | Siderurgie Fse Inst Rech | Method for top blowing pulverulent burnt lime and oxygen into cast iron for refining same |
| US3028232A (en) * | 1953-05-06 | 1962-04-03 | Voest Ag | Process for blowing pig-iron |
| US3172756A (en) * | 1965-03-09 | Process of dephosphorizing pig iron | ||
| DE1274147B (en) * | 1958-12-01 | 1968-08-01 | Mannesmann Ag | Process for the rapid production of a liquid, highly reactive, lime-rich slag with the help of blown air, oxygen-enriched air or pure oxygen when treating iron baths |
-
1952
- 1952-09-01 GB GB22004/52A patent/GB756429A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3172756A (en) * | 1965-03-09 | Process of dephosphorizing pig iron | ||
| US3028232A (en) * | 1953-05-06 | 1962-04-03 | Voest Ag | Process for blowing pig-iron |
| US2950186A (en) * | 1957-03-02 | 1960-08-23 | Siderurgie Fse Inst Rech | Method for top blowing pulverulent burnt lime and oxygen into cast iron for refining same |
| DE1274147B (en) * | 1958-12-01 | 1968-08-01 | Mannesmann Ag | Process for the rapid production of a liquid, highly reactive, lime-rich slag with the help of blown air, oxygen-enriched air or pure oxygen when treating iron baths |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2290961A (en) | Desulphurizing apparatus | |
| US3809547A (en) | Electric furnace steelmaking process using oxide of boron additive | |
| GB756429A (en) | Process for dephosphorizing a ferrous metal, for example pig iron | |
| US4373949A (en) | Method for increasing vessel lining life for basic oxygen furnaces | |
| US2800631A (en) | Method of carrying out melting processes | |
| US3574597A (en) | Acceleration of the dissolution of lime in the basic oxygen furnace process | |
| US4354868A (en) | Process for the desiliconization of manganese alloys | |
| FR2307875A1 (en) | Process for reclaiming steel making slags - by adding carbon and flux and blowing with oxygen at elevated temp. | |
| US3304172A (en) | Process for the manufacture of low phosphorus pig iron | |
| JPS5629611A (en) | Simultaneous dephosphorizing desulfurization of blast furnace molten pig iron | |
| ES8100349A1 (en) | A method for increasing vessel lining life for basic oxygen furnaces. | |
| GB848567A (en) | Improvements in a method of treating iron and steel to remove dissolved oxygen | |
| JPS55115913A (en) | Pretreating method of molten iron | |
| GB685326A (en) | Improvements in or relating to process for making steel | |
| JPS5576012A (en) | Control method for contained manganese of molten ion for steel making | |
| GB1251929A (en) | ||
| SU367168A1 (en) | MAGNETIC REDUCING MIXTURE | |
| US20170275714A1 (en) | Mixture, use of this mixture, and method for conditioning a slag located on a metal melt in a metallurgical vessel in iron and steel metallurgy | |
| GB705321A (en) | Improvements relating to the production of steel | |
| GB609850A (en) | Improvements in and relating to the desulphurization of pig iron | |
| CN1003308B (en) | Process for desulphurising melten metal | |
| GB745205A (en) | Process for the manufacture of steel | |
| JPS5591921A (en) | Manufacture of low hydrogen steel | |
| SU779407A1 (en) | Powdered mixture for liquid steel straining | |
| SU1689404A1 (en) | Solid slag forming mixture |