EP0512658B2 - Anlage zur Behandlung flüssigen Stahls und Verfahren zum Betrieb einer derartigen Anlage - Google Patents
Anlage zur Behandlung flüssigen Stahls und Verfahren zum Betrieb einer derartigen Anlage Download PDFInfo
- Publication number
- EP0512658B2 EP0512658B2 EP92250092A EP92250092A EP0512658B2 EP 0512658 B2 EP0512658 B2 EP 0512658B2 EP 92250092 A EP92250092 A EP 92250092A EP 92250092 A EP92250092 A EP 92250092A EP 0512658 B2 EP0512658 B2 EP 0512658B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- vacuum
- melt
- treatment
- generating
- time
- 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 - Lifetime
Links
- 238000011282 treatment Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 8
- 239000010959 steel Substances 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title claims description 12
- 239000007788 liquid Substances 0.000 title description 2
- 239000000155 melt Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000001301 oxygen Substances 0.000 claims abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 9
- 238000004458 analytical method Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 238000012937 correction Methods 0.000 claims description 2
- 238000007872 degassing Methods 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 238000009489 vacuum treatment Methods 0.000 claims description 2
- 238000005275 alloying Methods 0.000 claims 1
- 238000007670 refining Methods 0.000 claims 1
- 238000002844 melting Methods 0.000 abstract description 10
- 230000008018 melting Effects 0.000 abstract description 10
- 238000005266 casting Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009749 continuous casting Methods 0.000 abstract description 2
- 238000011144 upstream manufacturing Methods 0.000 abstract description 2
- 230000006978 adaptation Effects 0.000 abstract 1
- 239000000654 additive Substances 0.000 abstract 1
- 239000000161 steel melt Substances 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 229910001341 Crude steel Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Images
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
- C21C7/10—Handling in a vacuum
Definitions
- the invention relates to a method for the secondary metallurgical treatment of molten steel under vacuum.
- the size of the individual parts of the system or their capacity is coordinated so that for one a certain amount of production ensures a smooth flow of materials within the process chain.
- Figure 2 shows the original treatment sequence at just one vacuum level.
- the on Variant 2 shown in Figure 3 shows the final treatment of the melt in a separate rinsing station in front.
- Variant 3 ( Figure 4) contains a second treatment stand.
- a further reduction in the clock sequence is limited by the availability of the conventional vacuum pump system, usually existing from water ring pumps and steam jets.
- the invention is based on a known VOD system. This usually consists of a Combination of water ring pumps and the actual core of the vacuum system, the steam jets.
- Fig. 6 the usual one is in the first line, labeled VAK-Stand 1 (container 1) Treatment process of a melt shown in a VOD system, as it results from Fig. 1, only with the modification that the treatment section F was moved to a conditioning stand.
- VAK-Stand 1 container 1
- the pretreatment is also carried out the melt in container 1 'is completed.
- the first melt is now in a form not shown in FIG Condition level transferred and finished.
- Container 1 is now ready to hold one third ladle available while the container 1 'by appropriate actuation of shut-off devices can be subjected to a low vacuum.
- the purpose of the solution according to the invention is to increase the time utilization of the previous and downstream melting and casting equipment by z.
- Fig. 5 is a timing diagram of the solution according to the invention including an electric arc furnace or converter and a continuous caster shown, the cycle time of the vacuum system Is 55 minutes.
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)
- Furnace Details (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
Auswirkungen auf | Veränderung der erfindungsgemäßen Lösung (Var. 4) gegenüber den vorbekannten Lösungen | ||
Var. 1 100 % bzw.t | Var. 2 100 % bzw.t | Var. 3 100 % bzw.t | |
Behandlungszeit | 37 % | 50 % | 54 % |
Produktivität | 269 %/t | 200 %/t | 186 %/t |
Anlagengröße | 37 t | 50 t | 54 t |
Claims (1)
- Verfahren zur sekundärmetallurgischen Behandlung von Stahlschmelze unter Vakuum, mit
den Verfahrensschritten1. Frischen der Schmelze unter gleichzeitiger Sauerstoffzufuhr (zeitabschnitt B),2. Auskochenlassen der Schmelze im Anschluß an die Sauerstoffzufuhr (Zeitabschnitt C),3. Zusatz von Reduktionsmitteln mit anschließender Behandlungszeit zur Entgasung und Entschwefelung der Schmelze (Zeitabschnitt D und E) und4. Analysenkorrektur und Legieren (Zeitabschnitt F)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4114613A DE4114613A1 (de) | 1991-05-02 | 1991-05-02 | Anlage zur behandlung fluessigen stahls und verfahren zum betrieb einer derartigen anlage |
DE4114613 | 1991-05-02 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0512658A1 EP0512658A1 (de) | 1992-11-11 |
EP0512658B1 EP0512658B1 (de) | 1995-03-01 |
EP0512658B2 true EP0512658B2 (de) | 1998-07-01 |
Family
ID=6430994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92250092A Expired - Lifetime EP0512658B2 (de) | 1991-05-02 | 1992-04-23 | Anlage zur Behandlung flüssigen Stahls und Verfahren zum Betrieb einer derartigen Anlage |
Country Status (6)
Country | Link |
---|---|
US (1) | US5242484A (de) |
EP (1) | EP0512658B2 (de) |
JP (1) | JP3387522B2 (de) |
AT (1) | ATE119210T1 (de) |
DE (2) | DE4114613A1 (de) |
ES (1) | ES2068672T3 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5520718A (en) * | 1994-09-02 | 1996-05-28 | Inland Steel Company | Steelmaking degassing method |
CN103305662A (zh) * | 2013-05-31 | 2013-09-18 | 中冶南方工程技术有限公司 | 用于真空冶炼的真空系统 |
CN110295269B (zh) * | 2019-06-21 | 2021-11-26 | 敬业钢铁有限公司 | 一种使用精炼炉抽真空装置的抽真空方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1062432B (de) * | 1957-05-11 | 1959-07-30 | Wiegand Appbau G M B H | Entgasung von Metallschmelzen mittels Dampfstrahl-Apparaten |
US3467167A (en) * | 1966-09-19 | 1969-09-16 | Kaiser Ind Corp | Process for continuously casting oxidizable metals |
DE2043861A1 (en) * | 1970-09-04 | 1972-03-09 | Rheinstahl AG Anlagentechnik, 4300 Essen | Steel makin g - pre-heated scrap iron in electric furnaces and staged refining |
-
1991
- 1991-05-02 DE DE4114613A patent/DE4114613A1/de active Granted
-
1992
- 1992-04-23 ES ES92250092T patent/ES2068672T3/es not_active Expired - Lifetime
- 1992-04-23 AT AT92250092T patent/ATE119210T1/de active
- 1992-04-23 EP EP92250092A patent/EP0512658B2/de not_active Expired - Lifetime
- 1992-04-23 DE DE59201502T patent/DE59201502D1/de not_active Expired - Lifetime
- 1992-05-01 JP JP14000392A patent/JP3387522B2/ja not_active Expired - Fee Related
- 1992-05-04 US US07/878,143 patent/US5242484A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE119210T1 (de) | 1995-03-15 |
JPH05148528A (ja) | 1993-06-15 |
US5242484A (en) | 1993-09-07 |
EP0512658B1 (de) | 1995-03-01 |
EP0512658A1 (de) | 1992-11-11 |
JP3387522B2 (ja) | 2003-03-17 |
DE59201502D1 (de) | 1995-04-06 |
DE4114613C2 (de) | 1993-07-08 |
ES2068672T3 (es) | 1995-04-16 |
DE4114613A1 (de) | 1992-11-05 |
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