GB1386340A - Method to control composition of steel melts in bottom-blown steel making process - Google Patents
Method to control composition of steel melts in bottom-blown steel making processInfo
- Publication number
- GB1386340A GB1386340A GB4854772A GB4854772A GB1386340A GB 1386340 A GB1386340 A GB 1386340A GB 4854772 A GB4854772 A GB 4854772A GB 4854772 A GB4854772 A GB 4854772A GB 1386340 A GB1386340 A GB 1386340A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blowing
- argon
- steel
- converter
- passageways
- 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
- C21C5/34—Blowing through the bath
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
1386340 Refining steel PENNSYLVANIA ENG CORP and AVRR 28 Oct 1972 [10 Dec 1971] 48547/72 Heading C7D The composition of steel is controlled in a bottom-blowing converter by the following sequential steps, (a) holding a quantity of molten ferrous metal in the converter, (b) after the converter is turned to its blowing position, blowing a non-oxidizing gas with entrained finely divided desulphurizing agent through one of a pair of tuyere passageways while blowing argon through the other passageway. (c) blowing oxygen and at least finely divided entrained burnt line through the said one tuyere passageway while blowing hydrocarbon through the other until the carbon content of the melt reaches the level aimed for and (d) blowing argon through the pair of passageways simultaneously for a short time to remove from the melt dissolved hydrogen and other non- oxidizing gas such as nitrogen. Argon may also be blown through both passageways during charging of molten metal until the vessel is turned up and also during emptying of the vessel. The oxygen blowing may reduce the carbon content of the metal slightly below the desired final content, the desired content then being achieved by continuing the hydrocarbon injection and replacing the oxygen injection with argon.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US20677371A | 1971-12-10 | 1971-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1386340A true GB1386340A (en) | 1975-03-05 |
Family
ID=22767893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4854772A Expired GB1386340A (en) | 1971-12-10 | 1972-10-20 | Method to control composition of steel melts in bottom-blown steel making process |
Country Status (5)
| Country | Link |
|---|---|
| AU (1) | AU473810B2 (en) |
| CA (1) | CA971366A (en) |
| GB (1) | GB1386340A (en) |
| MX (1) | MX146942A (en) |
| ZA (1) | ZA727444B (en) |
-
1972
- 1972-10-18 ZA ZA727444A patent/ZA727444B/en unknown
- 1972-10-20 GB GB4854772A patent/GB1386340A/en not_active Expired
- 1972-10-27 CA CA154,983A patent/CA971366A/en not_active Expired
- 1972-11-16 AU AU48936/72A patent/AU473810B2/en not_active Expired
- 1972-12-04 MX MX140170A patent/MX146942A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA727444B (en) | 1973-08-29 |
| AU473810B2 (en) | 1976-07-01 |
| MX146942A (en) | 1982-09-14 |
| AU4893672A (en) | 1974-05-16 |
| CA971366A (en) | 1975-07-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |