GB904868A - Process for making steel - Google Patents
Process for making steelInfo
- Publication number
- GB904868A GB904868A GB1341259A GB1341259A GB904868A GB 904868 A GB904868 A GB 904868A GB 1341259 A GB1341259 A GB 1341259A GB 1341259 A GB1341259 A GB 1341259A GB 904868 A GB904868 A GB 904868A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stage
- oxygen
- lance
- top blowing
- lime
- 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)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
A process of producing steel from a pig iron containing more than 0.30% phosphorus by a top blowing method comprises the following stages:-Stage 1.-Pure oxygen is blown on to or into the melt through a lance held at a constant height above the surface. Stage 2.-Top blowing is continued using a lime-oxygen suspension while the tip of the lance is gradually lowered; the bath is then deslagged and Stage 3.-Top blowing is continued with oxygen containing a finely divided alkaline earth compound. Lime may be suspended in the oxygen blast during stage 1 in addition to slag forming materials added to the bath before blowing. The oxygen lance may be inclined from the vertical to promote foaming of the slag after which it is moved to the vertical position. During the second stage the lance may be moved slowly and steadily downwards or may be lowered and raised each minute resulting in a downward movement of 0.05 to 0.10 m. per minute. After deslagging preceding the third stage silica may be added before or with the alkaline earth compound. Specifications 745,205, 789,892 and 844,987 are referred to.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE567172 | 1958-04-26 | ||
| BE568372 | 1958-06-05 | ||
| BE570036 | 1958-08-02 | ||
| BE570076 | 1958-08-04 | ||
| BE573851 | 1958-12-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB904868A true GB904868A (en) | 1962-08-29 |
Family
ID=27507604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1341259A Expired GB904868A (en) | 1958-04-26 | 1959-04-20 | Process for making steel |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1292682B (en) |
| GB (1) | GB904868A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3476550A (en) * | 1965-07-07 | 1969-11-04 | Mannesmann Ag | Method for correcting the temperature of steel at the end of the refining process |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI66202C (en) * | 1981-11-17 | 1984-09-10 | Outokumpu Oy | FOER FARERE OCH ANORDNING FOER ATT PNEUMATISKT MATA TILLSATSMATERIALIER TILL KONVERTRAR |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1130096A (en) * | 1954-05-25 | 1957-01-30 | Thyssen Huette Ag | Process for refining phosphorous pig iron by blowing from the top |
| FR1133958A (en) * | 1955-06-17 | 1957-04-04 | Mannesmann Ag | Steel making process |
| DE1012945B (en) * | 1955-07-04 | 1957-08-01 | Hoerder Huettenunion Ag | Process for overwind refining of phosphorus-containing pig iron |
| FR1163225A (en) * | 1956-12-07 | 1958-09-23 | Siderurgie Fse Inst Rech | Process for the rapid formation or transformation of a slag in a martin furnace |
-
1959
- 1959-04-20 GB GB1341259A patent/GB904868A/en not_active Expired
- 1959-04-25 DE DE1959A0031917 patent/DE1292682B/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3476550A (en) * | 1965-07-07 | 1969-11-04 | Mannesmann Ag | Method for correcting the temperature of steel at the end of the refining process |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1292682B (en) | 1969-04-17 |
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