GB768168A - Improvements in the production of steel from crude iron containing phosphorus - Google Patents
Improvements in the production of steel from crude iron containing phosphorusInfo
- Publication number
- GB768168A GB768168A GB32828/54A GB3282854A GB768168A GB 768168 A GB768168 A GB 768168A GB 32828/54 A GB32828/54 A GB 32828/54A GB 3282854 A GB3282854 A GB 3282854A GB 768168 A GB768168 A GB 768168A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blowing
- oxygen
- decarbonization
- slag
- refining
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
A method of refining phosphorus containing raw iron in a converter using air, oxygen enriched air, or a mixture of oxygen and steam, comprises blowing oxygen rich gases periodically on to the surface of the bath and continuously or intermittantly adding cooling oxygen carriers to form a liquid, basic oxidizing slag, the dephosphorizing period being brought wholly or partly into the decarbonizing period, and the rate of decarbonization being maintained at 0.15 per cent to 0.20 per cent per minute. A lance may be used for surface blowing which may be carried out until dephosphorization is complete, the remainder of the decarbonization, if required, being performed by bottom blowing. Slag forming materials, e.g. lime, may be added at the beginning or in portions during the refining and the cooling oxygen carriers, e.g. oxidic iron ore or mill scale, added continuously during blowing. The area of the bottom tuyeres may be reduced. The pressure of gas blown on the surface should be so low that the slag layer is not penetrated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE768168X | 1953-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB768168A true GB768168A (en) | 1957-02-13 |
Family
ID=6673635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32828/54A Expired GB768168A (en) | 1953-11-13 | 1954-11-12 | Improvements in the production of steel from crude iron containing phosphorus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB768168A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1153043B (en) * | 1957-03-12 | 1963-08-22 | Phoenix Rheinrohr Ag | Process for the production of steel by refining pig iron containing or rich in phosphorus |
| DE1179964B (en) * | 1957-12-31 | 1964-10-22 | Phoenix Rheinrohr Ag | Method for producing steel in the bottom-blowing converter by refining a pig iron containing 0.6 to 2 percent phosphorus |
-
1954
- 1954-11-12 GB GB32828/54A patent/GB768168A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1153043B (en) * | 1957-03-12 | 1963-08-22 | Phoenix Rheinrohr Ag | Process for the production of steel by refining pig iron containing or rich in phosphorus |
| DE1179964B (en) * | 1957-12-31 | 1964-10-22 | Phoenix Rheinrohr Ag | Method for producing steel in the bottom-blowing converter by refining a pig iron containing 0.6 to 2 percent phosphorus |
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