GB1471491A - Metal refining - Google Patents
Metal refiningInfo
- Publication number
- GB1471491A GB1471491A GB1287374A GB1287374A GB1471491A GB 1471491 A GB1471491 A GB 1471491A GB 1287374 A GB1287374 A GB 1287374A GB 1287374 A GB1287374 A GB 1287374A GB 1471491 A GB1471491 A GB 1471491A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stainless steel
- melt
- march
- tuyeres
- steel
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
-
- 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
- C21C7/0685—Decarburising of stainless steel
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
1471491 Induction heated refining vessels BRITISH STEEL CORP 20 March 1975 [22 March 1974] 12873/74 Heading F4B [Also in Division C7] Molten metal (e.g. stainless steel) is refined by injecting a reactive gas and an inert gas into the melt through tuyeres in the vessel wall, in which heat is supplied to the melt by an induction heater. The gases are injected into the melt 5 through concentric tuyeres 4, and are preferably O 2 and Ar, although H 2 O and N 2 may also be used. The method may be used in the argon-oxygen decarburization of stainless steel, and in a variation the stainless steel may be initially blown with O 2 /H 2 O and finally with H 2 O/Ar, followed by an Ar purge to eliminate H 2 pick-up. The production of Ni-free ferritic stainless steel having low C and N (not more than 0À02%) is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1287374A GB1471491A (en) | 1974-03-22 | 1974-03-22 | Metal refining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1287374A GB1471491A (en) | 1974-03-22 | 1974-03-22 | Metal refining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1471491A true GB1471491A (en) | 1977-04-27 |
Family
ID=10012708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1287374A Expired GB1471491A (en) | 1974-03-22 | 1974-03-22 | Metal refining |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1471491A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2185096A (en) * | 1985-12-31 | 1987-07-08 | Fischer Ag Georg | Treatment vessel for treating molten metal alloys |
-
1974
- 1974-03-22 GB GB1287374A patent/GB1471491A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2185096A (en) * | 1985-12-31 | 1987-07-08 | Fischer Ag Georg | Treatment vessel for treating molten metal alloys |
| GB2185096B (en) * | 1985-12-31 | 1990-09-05 | Fischer Ag Georg | Treatment vessel for treating molten metal alloys |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |