GB789892A - Improvements in or relating to the production of steel and iron - Google Patents
Improvements in or relating to the production of steel and ironInfo
- Publication number
- GB789892A GB789892A GB1646655A GB1646655A GB789892A GB 789892 A GB789892 A GB 789892A GB 1646655 A GB1646655 A GB 1646655A GB 1646655 A GB1646655 A GB 1646655A GB 789892 A GB789892 A GB 789892A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rate
- nozzles
- blowing
- iron
- slag
- 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
- 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
- C21C5/32—Blowing from above
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (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
Steel or technically pure iron is made from pig iron by blowing oxygen on to the surface of molten pig iron at a rate sufficient to decarbonize and dephosphorize the metal and maintain the phosphorous content below the carbon content, reducing the rate of blowing to decrease the rate of decarburizing but maintain a high rate of dephosphorizing, and then increasing the rate of blowing to complete the decarburization. The alterations in the rate of blowing may be produced by using more or less nozzles, or nozzles of different diameter, or raising or lowering the nozzles, or varying the pressure of the oxygen. The best results are stated to be obtained when the nozzles are 20 to 30 inches above the quiescent surface of the metal. Foaming of the slag may be prevented by directing some nozzles against the slag or by the addition of alkali or alkaline earth metal halides, mine dust, bauxite or sand. Slag forming and cooling agents may be added e.g. lime, iron ore, mill scale, limestone or scrap metal. A further oxidation at a low oxygen rate may also be carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1646655A GB789892A (en) | 1955-06-08 | 1955-06-08 | Improvements in or relating to the production of steel and iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1646655A GB789892A (en) | 1955-06-08 | 1955-06-08 | Improvements in or relating to the production of steel and iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB789892A true GB789892A (en) | 1958-01-29 |
Family
ID=10077845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1646655A Expired GB789892A (en) | 1955-06-08 | 1955-06-08 | Improvements in or relating to the production of steel and iron |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB789892A (en) |
-
1955
- 1955-06-08 GB GB1646655A patent/GB789892A/en not_active Expired
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