EP2986743A1 - Procédé et installation pour la production de ferro-alliages présentant une teneur réduite en carbone dans un convertisseur à vide - Google Patents
Procédé et installation pour la production de ferro-alliages présentant une teneur réduite en carbone dans un convertisseur à videInfo
- Publication number
- EP2986743A1 EP2986743A1 EP14724289.5A EP14724289A EP2986743A1 EP 2986743 A1 EP2986743 A1 EP 2986743A1 EP 14724289 A EP14724289 A EP 14724289A EP 2986743 A1 EP2986743 A1 EP 2986743A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- converter
- vacuum
- nozzles
- injected
- oxygen
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 11
- 229910001021 Ferroalloy Inorganic materials 0.000 title claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 title abstract description 12
- 238000005261 decarburization Methods 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 12
- 239000000155 melt Substances 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims abstract description 6
- 229910015136 FeMn Inorganic materials 0.000 claims abstract description 4
- 229910000604 Ferrochrome Inorganic materials 0.000 claims abstract description 4
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 3
- 239000000956 alloy Substances 0.000 claims abstract description 3
- 239000011261 inert gas Substances 0.000 claims description 12
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- -1 C0 2 Substances 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 238000010744 Boudouard reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- VVTSZOCINPYFDP-UHFFFAOYSA-N [O].[Ar] Chemical compound [O].[Ar] VVTSZOCINPYFDP-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 235000014633 carbohydrates Nutrition 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000013206 minimal dilution Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000161 steel melt Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- C21C5/35—Blowing from above and through the bath
-
- 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
-
- 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
- C21C7/10—Handling in a vacuum
Definitions
- the vacuum converter is equipped with a valve station that allows mixing of the process and inert gases used for the top lance and bottom bath nozzles.
- the gases are mixed as follows, especially in the case of the underbath nozzles on the process and inert gas sides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013006986 | 2013-04-15 | ||
DE201310014856 DE102013014856A1 (de) | 2013-04-15 | 2013-09-02 | Verfahren und Anlage zur Herstellung von Ferrolegierungen mit niedrigem Kohlenstoffgehalt in einem Vakuum-Konverter |
PCT/DE2014/000164 WO2014169888A1 (fr) | 2013-04-15 | 2014-03-25 | Procédé et installation pour la production de ferro-alliages présentant une teneur réduite en carbone dans un convertisseur à vide |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2986743A1 true EP2986743A1 (fr) | 2016-02-24 |
EP2986743B1 EP2986743B1 (fr) | 2017-02-01 |
Family
ID=51618168
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14724289.5A Active EP2986743B1 (fr) | 2013-04-15 | 2014-03-25 | Procédé pour la production de ferro-alliages présentant une teneur réduite en carbone dans un convertisseur à vide |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2986743B1 (fr) |
DE (1) | DE102013014856A1 (fr) |
WO (1) | WO2014169888A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111424136A (zh) * | 2019-01-10 | 2020-07-17 | 宝山钢铁股份有限公司 | 一种rh柔性自补偿密封通道及其柔性补偿方法 |
DE102021214220A1 (de) | 2021-03-08 | 2022-09-08 | Sms Group Gmbh | Verfahren zum Herstellen einer Ferrolegierung mit niedrigem Kohlenstoffgehalt |
EP4056720A1 (fr) | 2021-03-08 | 2022-09-14 | SMS Group GmbH | Procédé de fabrication d'un ferro-alliage à faible taux de carbone |
DE102021214218A1 (de) | 2021-03-08 | 2022-09-08 | Sms Group Gmbh | Verfahren zum Herstellen einer Ferrolegierung mit niedrigem Kohlenstoffgehalt |
EP4056721A1 (fr) | 2021-03-08 | 2022-09-14 | SMS Group GmbH | Procédé de fabrication d'un ferro-alliage à faible taux de carbone |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2123212A1 (en) * | 1971-01-29 | 1972-09-08 | Creusot Loire | Refinement and alloying of steel - in one furnace as one sequence of operations esp for stainless steel |
DE4401244C2 (de) * | 1994-01-18 | 2002-11-07 | Ald Vacuum Techn Ag | Verfahren zur Entkohlung von Stahlschmelzen |
JP3531218B2 (ja) * | 1994-06-20 | 2004-05-24 | 大同特殊鋼株式会社 | 低炭素含クロム鋼の製造方法 |
US20040245682A1 (en) * | 2001-09-20 | 2004-12-09 | Kosuke Yamashita | Method for refining molten iron containing chromium |
-
2013
- 2013-09-02 DE DE201310014856 patent/DE102013014856A1/de not_active Withdrawn
-
2014
- 2014-03-25 WO PCT/DE2014/000164 patent/WO2014169888A1/fr active Application Filing
- 2014-03-25 EP EP14724289.5A patent/EP2986743B1/fr active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2014169888A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2986743B1 (fr) | 2017-02-01 |
WO2014169888A1 (fr) | 2014-10-23 |
DE102013014856A1 (de) | 2014-10-16 |
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