GB861238A - Process for making steel - Google Patents
Process for making steelInfo
- Publication number
- GB861238A GB861238A GB38956/58A GB3895658A GB861238A GB 861238 A GB861238 A GB 861238A GB 38956/58 A GB38956/58 A GB 38956/58A GB 3895658 A GB3895658 A GB 3895658A GB 861238 A GB861238 A GB 861238A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stage
- lime
- oxygen
- carbon content
- powder
- 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
Steel is made in a converter by a first stage of blowing through the bottom tuyeres to a carbon content of 0.7 to 1.5% and top blowing in a second stage with lime loaded oxygen with the converter turned down. Lime may be added during the first stage in the form of lumps, powder or briquettes, or it may be supplied as a powder suspended in the bottom blown gas which may be air enriched to 30% oxygen. With low silicon irons, the slags from the previous operation may be suitable for the first stage without further addition of lime. During the second stage, ores, oxides of iron, or siliceous materials may be added in bulk or in the form of powder blown in with the gas, and in the latter part of the second stage the oxygen may be free from suspended additions. At the end of the second stage the refining may be terminated leaving the steel with low phosphorous and relatively high carbon content, or the carbon content may be reduced in a third stage in which bottom blowing is resumed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU861238X | 1958-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB861238A true GB861238A (en) | 1961-02-15 |
Family
ID=19734395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB38956/58A Expired GB861238A (en) | 1958-02-03 | 1958-12-03 | Process for making steel |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB861238A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3773496A (en) * | 1970-02-18 | 1973-11-20 | Maximilianshuette Eisenwerk | Process for producing chrome steels and a converter for carrying out the process |
-
1958
- 1958-12-03 GB GB38956/58A patent/GB861238A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3773496A (en) * | 1970-02-18 | 1973-11-20 | Maximilianshuette Eisenwerk | Process for producing chrome steels and a converter for carrying out the process |
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