EP1310573A2 - Verfahren zur Herstellung einer Metallschmelze an Hand eines dynamischen Prozessmodells, inklusiv Korrekturmodell - Google Patents
Verfahren zur Herstellung einer Metallschmelze an Hand eines dynamischen Prozessmodells, inklusiv Korrekturmodell Download PDFInfo
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- EP1310573A2 EP1310573A2 EP02450259A EP02450259A EP1310573A2 EP 1310573 A2 EP1310573 A2 EP 1310573A2 EP 02450259 A EP02450259 A EP 02450259A EP 02450259 A EP02450259 A EP 02450259A EP 1310573 A2 EP1310573 A2 EP 1310573A2
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- 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
-
- 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
- C21C5/005—Manufacture of stainless steel
-
- 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
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4673—Measuring and sampling devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/0014—Devices for monitoring temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/0035—Devices for monitoring the weight of quantities added to the charge
Definitions
- the disadvantage here is that there is no continuous recording over the entire treatment time and the plausibility of the calculated temperature and analysis values is checked.
- the Process optimization is difficult in this way if it is feasible, especially if the conditions in the melting unit (change in refractory temperature, change in Refractory strength, change in reaction volume, ...) are also taken into account.
- the invention according to EP 0 857 222 B1 relates to a process for decarburizing a molten steel for the production of high-chromium-containing steels, in which the decarburization rate is measured continuously and the amount of oxygen to be blown in is set as a function of the measured values, the decarburization rate being determined from the CO and CO 2 content in the exhaust gas and the exhaust gas flow is determined.
- the measurement of the exhaust gas compositions listed above is possible, but relatively inaccurate.
- the position of the measuring probe in the exhaust gas flow must be positioned in the vicinity of the mouth of the crucible, on the one hand to obtain the exhaust gas information relatively quickly and on the other hand to minimize / avoid the falsification of the exhaust gas composition by fresh air entering the crucible mouth area.
- This method is less suitable for the production of alloyed steels, since metal oxidation is not taken into account and cannot be determined with this method either.
- the implementation of the method according to the invention can be carried out all the better if the faster the measurement data are available after the measurement has been carried out.
- temperature measurement as well as for chemical analysis are known measuring methods (WO 97/22859 and WO 02/48661) with which the almost immediately after the measurement measured data are available. So are the temperature values of the melt after ms and a temperature value averaged from several measurements after about one s available.
- Chemical analysis values are e.g. after 0.05 to 0.1 s and one over about 100 measurements averaged value available after 5 to 10 s.
- a separate process model module is advantageously found for each variable process variable Application.
- the process model module a self-contained part of the Understand the process model that is responsible for a certain functional sequence, such as for decarburization, desulfurization, temperature prediction and alloying with alloying elements.
- the process model modules are, however, as far as the individual Functional processes influence each other, taking these influences into account linked with each other.
- Process knowledge is automatically and continuously carried out on the process Knowledge gained during production is improved.
- This self-generating Process knowledge is adopted from a data store as new prior knowledge, i.e. it comes to a constantly improved basis for further adaptation or optimization of the process.
- the method is expediently carried out in such a way that an existing mode of operation (obtained, for example, based on many years of experience; know how) for different grades is optimized in such a way that changes which are favorable for the process (such as reduction of O 2 , optimization of the process temperature curve are reduced to lower ones) Values; reducing / optimizing gas quantities; shortening process times; ...) for the respective quality can be adopted and saved.
- changes which are favorable for the process such as reduction of O 2 , optimization of the process temperature curve are reduced to lower ones
- Values such as reduction of O 2 , optimization of the process temperature curve are reduced to lower ones
- the optimal execution of the method is at least part of the process time the time difference between two successive surveys of an actual process variable kept very small, preferably the time difference is infinitesimal, i.e. the actual process variable is collected continuously.
- a particularly simple process model with which very good end results can be achieved let is characterized in that the actual process variables the chemical Composition of the exhaust gas and the chemical composition of charged Material and possibly the chemical composition of the slag collected become.
- the method according to the invention is based on knowing the actual situation to be determined Points in time during the procedure, whereby, as stated above, permanent knowledge the actual situation is optimal for at least the most important process steps method according to the invention results.
- the process parameters such as oxygen flow, inert gas flow, Time of addition, chemical composition and quantity of additives, optimized become. Knowing the current situation allows the target points to be approached exactly, e.g. can already with knowledge of the chemical composition and the temperature of the Metal melt the missing and still to be added materials and gas quantities in time precisely introduced in terms of quantity and analysis.
- the process model is improved with a model adaptation, so that the model behavior matches the actual process behavior as closely as possible.
- Control variables found that lead to good process behavior For example, at too high steel melt temperature either reduces the oxygen supply or the Time of addition for refrigerated scrap or alloying elements can be changed.
- process model is based to a certain percentage on uncertain knowledge the process model is adapted and changed based on the process data obtained. This adaptation takes place with the process model adaptation, which is based on data from past process states. The process results are checked by plausibility queries.
- FIG. 1 and FIG. 2 The basic structure of the method according to the invention is simplified in FIG. 1 and FIG. 2, each in block diagram form.
- Processes according to the invention decarburization (DeC process), reduction, addition of alloys and cooling illustrated in block diagram form in Figs. 3, 4, 5 and 6. 7 and 8 show Temperature curve and chemical analysis values on the process flow of the following Example.
- the initial analysis, analysis of the aggregates and the quantities of gas introduced are can be determined without difficulty and are available at any time.
- the knowledge the temperature of the molten steel, the exhaust gas composition and the analysis of the Melting steel is based on snapshots, realized by a continuous Working temperature measuring and analysis system for the molten metal, such as e.g. according to WO 97/22859 or WO 02/48661.
- the exemplary AOD model designed according to the invention takes this into account and became so built that after knowing the actual state, the process model parameters so be adjusted / changed so that the desired values are actually achieved. With This procedure ensures that the FF consumption reduces the flow rates optimized and thus reduced and the ttt time can be shortened. In addition, a targeted application strategy optimizes the amount of aggregates.
- an AOD converter 1 shown in FIG. 1 oxygen and a Dilution gas (inert gas) both via a top lance 2 and via nozzles 3 which are provided below the molten steel bath level 4 on the converter 1, in the interior thereof 5 introduced.
- the converter 1 is, as is customary in the case of steelworks converters, tiltably mounted, which is not shown in more detail.
- the converter 1 is also equipped with a device 6 for Temperature measurement of the molten steel 7 and a device 8 for determining the chemical analysis of the molten steel 7 equipped. You can also use Measuring devices 9 and 10 the flow rates through the top lance 2 and the nozzles 3rd determine the gases introduced.
- the exhaust gas emerging from the converter 1 is also by means of a device 11 with regard to its chemical composition analyzes which analysis device 11 in the exhaust gas chimney, which is not shown in detail, is provided.
- the molten steel charged in the converter 1 7 Weight, chemical analysis and temperature determined. Also from the on the Premelt resting slag 12 are weight, chemical composition and Temperature determined. Of the planned aggregates to be introduced are also Weight, chemical composition and temperature known.
- Tempsoll (t) Tempist (t-Dt) + g (oxidation, gas quantity (Nl / min), heat losses, exhaust gas losses; t-Dt) t-Dt KK the measurement is available at time t-Dt, where Dt is the time step between two calculation steps. The smaller Dt is selected, the more precisely the target curve can be achieved. For short time intervals it is necessary that the measurement data describe the current state in the molten steel.
- a total (kg or mole) for each element / substance is used for the balancing set up at any time.
- FIGS. 3 and 4 The sequence of the iteration and calculation process is shown in FIGS. 3 and 4 using a logical plan, with FIG. 3 being decisive for the decarburization process and FIG. 4 for the reduction process.
- These processes are based on the following forms of calculation.
- a shift in the timing of alloying between the different ones steps is done to maintain the desired temperature.
- FeNi or Ni, lime and / or scrap are primarily used for cooling.
- SiO 2 (kg / t) ⁇ SiO 2j (%) + j addition + 2.14 * ( ⁇ Si% * j addition * + Si Red )
- the logical plan for calculating the lime / dolo consumption is shown in FIG. 6.
- the results of the model calculation are continuously updated with the actual values of the Melting steel temperature, slag temperature, analysis of the molten steel and the Exhaust gas measurement compared.
- the following process flow is used to manufacture the quality AISI 304 illustrated from the raw steel used to the finished product.
- 7 and 8 show the course of the temperature change and the course of the change in chemical analysis (for C, Mn, Cr, Ni) in this process.
- step 2 Decarburization stage 2 (step 2)
- step 3 Decarburization level 3 (step 3)
- step 5 Decarburization level 5 (step 5)
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- Organic Chemistry (AREA)
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- Manufacturing & Machinery (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
- ein erstes neuronales Netzwerk, um Eingangs- und Ausgangsdaten aus Daten zu analysieren, zu denen die Zusammensetzung, das Gewicht und die Temperatur des Bades am Anfang jeder Prozeßperiode, das zu verwendende Gasverhältnis Sauerstoff zu Verdünnungsgas während jeder Prozeßperiode und die am Abschluß jeder Prozeßperiode erreichte Endtemperatur gehören, bis das neuronale Netz in der Lage ist, einen wesentlichen genauen Ausganswert zu liefern, welcher die Sauerstoffzählwerte darstellt, die in das Bad eingeblasen werden müssen, um zu bewirken daß die Temperatur des Bades auf einen bestimmten Soll-Temperaturwert ansteigt,
- ein zweites neuronales Netzwerk, um Eingangs- und Ausgangsdaten aus Daten zu analysieren, zu denen die Zusammensetzung, das Gewicht und die Temperatur des Bades am Anfang jeder Prozeßperiode und die am Abschluß jeder Prozeßperiode erreichte Endtemperatur gehören, bis das neuronale Netz in der Lage ist, einen im wesentlichen genauen Ausgangswert von Sauerstoffzählwerten zu liefern, um den Kohlenstoffpegel entsprechend einer vorgewählten Aufstellung von Verhältnissen von Sauerstoff zu Verdünnungsgas auf den vorgewählten Soll-Pegel zu senken,
- Zuschlagstoffe werden in drei weiteren neuronalen Netzwerken berücksichtigt, um den Kohlenstoffgehalt, die Temperatur und die Endzusammensetzung des Bades am Ende des Einblasens von Sauerstoff zu berechnen.
Während einer Charge werden (speziell bei der Rostfrei-Stahlerzeugung) Messungen (Temperatur, Probenahme für chemische Analyse) durchgeführt.
- Bei Verwendung einer Sublanze muß der Prozeß für die Messung nicht unterbrochen werden (Temperaturangaben liegen unmittelbar nach Eintauchen der Meßsonde in die Stahlschmelze vor; bei einer Probenahme muß auf die Analyseergebnisse vom Labor gewartet werden (etwa 3 - 6 Minuten)).
- Wenn keine Sublanze verwendet wird, muß für eine Messung der AOD-Prozeß unterbrochen werden. Bei einer Handmessung liegt der Temperaturwert ebenfalls unmittelbar nach Eintauchen der Sonde in die Stahlschmelze vor. Bei einer Probenahme muß auf die Analyseergebnisse wie oben angeführt ebenfalls ca. 3 bis 6 Minuten gewartet werden.
- mit dem Prozeßmodell wird mit zu einer bestimmten Zeit (ti) erhobenen Daten einer Ist-Prozeßgröße, wie der Temperatur der Schmelze und/oder der chemischen Zusammensetzung der Schmelze, durch Simulation mit Rechentechnik unmittelbar zum Zeitpunkt der Erhebung der Ist-Prozeßgröße eine Prozeßgröße für einen späteren Zeitpunkt (ti + dt), vorzugsweise eine Prozeßendgröße, ermittelt und
- bei Abweichungen der simulierten Prozeßgröße von einem gewünschten Soll-Wert werden mittels des Prozeßmodells mit Rechentechnik Korrekturmaßnahmen zur Änderung der Ist-Prozeßgröße errechnet und die Ist-Prozeßgröße entsprechend geändert
- worauf zu einem späteren Zeitpunkt (ti + dt) mit weiters erhobenen Daten der Ist-Prozeßgröße das Verfahren wiederholt wird.
- f (..,t), g (...,t)
- zeitabhängige Funktionen
- t
- Zeit
- soll
- Soll-Wert
- ist
- Ist-Wert
- Zuschlagstoffe
- Legierungselemente, Kühlschrott, Schlackebildner, .....
Für kurze Zeitintervalle ist es erforderlich, daß die Meßdaten den aktuellen Zustand in der Stahlschmelze beschreiben.
- xk
- Anteil von x im Zugabestoff k
- Ausbringenk
- Ausbringen des Zuschlagstoffes k
- Gewicht xOxidation
- Gewicht des Stoffes x, der im Zeitabschnitt Dt oxidiert
- Gewicht xvap
- Verdampfungsverlust im Zeitabschnitt Dt
- Kostenoptimierung, d.h. Kostenminimierung für jedes Legierungselement
- Zugabe von C>2% sind nur in den steps 1, 2a, 2b gestattet
- Cr-Zugabe: in step 1 und 2a (50%), 2b (50%), Reduktion (Feineinstellung)
- Ni-Zugabe: in step 2c (90%), restliche Zugabe in step 3 (30%), step 4 (20%), Reduktion (20%)
- MN-Zugabe: in step 2b (100% HCMn) oder in step 2b (50%) und Rest mit SiMn in Reduktionsphasen (wenn verfügbar)
- Zum Masseaufbau wird eine zusätzliche neutrale Zugabe mit Abstichanalyse berechnet.
- Badspiegelberechnung
- Chargiermodell
- Thermische Modellberechnung
- Analyseberechnung
- Stickstoff Modell
- DeC-Modell
- DeC-Modell (Feinabstimmung Abstich)
- Reduktionsmodell
- DeS-Modell
- Neutrales Zuschlagstoff-Modell
- Legierungsmodell
- Abstich-Modell
- Temperatur-Modell
- T-Kontroll-Modellfunktion
- Reblow-Modell
Blaseschema AISI 304 | ||||||
O2-Lanze [Nm3/min] |
O2-Düsen [Nm3/min] |
N2-Lanze [Nm3/min] |
Ar-Lanze [Nm3/min] |
Zielgehalt C [%] |
Zieltemperatur [°C] |
|
Step 1 | 100 | 30 | 15 | - | 0,6 | 1710 |
Step 2 | - | 60 | 20 | - | 0,4 | 1740 |
Step 3 | - | 45 | 45 | - | 0,2 | 1760 |
Step 4 | - | 20 | 60 | - | 0,08 | 1750 |
Step 5 | - | 12 | 48 | - | 0,04 | 1750 |
Reduktion und Entschwefelung | - | - | - | 45 | - | 1665 |
- CRE step 1:
- durchschnittlich 78%
- CRE gesamt:
- durchschnittlich 68%
- Einsatzgewicht:
- Stahl 86,5 t
Schlacke: 0,6 t
Analyse | |
C | 1,8 |
Si | 0,14 |
Mn | 0,59 |
P | 0,023 |
S | 0,024 |
Cr | 19,03 |
Ni | 7,14 |
Medienverbräuche: siehe Tabelle 1
- Zugabe:
- Dolomit 1500 kg
Kalk 2000 kg
FeNi 1500 kg
Behandlungszeit step 1: 11,25 Minuten
Analyse nach step 1 | |
C | 0,507 |
Si | 0,0 |
Mn | 0,49 |
P | 0,023 |
S | 0,022 |
Cr | 18,39 |
Ni | 7,91 |
- Zugaben:
- Kalk 1000 kg
FeNi 1000 kg
Behandlungszeit step 2: 4,83 Minuten
Analyse nach step 2 | |
C | 0,347 |
Si | 0 |
Mn | 0,475 |
P | 0,023 |
S | 0,022 |
Cr | 17,77 |
Ni | 8,34 |
- Zugabe:
- Kalk 1500 kg
Behandlungszeit step 3: 5,66 Minuten
Analyse nach step 3 | |
C | 0,199 |
Si | 0 |
Mn | 0,457 |
P | 0,023 |
S | 0,021 |
Cr | 17,426 |
Ni | 8,395 |
- Zugabe:
- Kalk 480 kg
Shredder 1000 kg
Behandlungszeit step 4: 7, 92 Minuten
Analyse nach step 4 | |
C | 0,119 |
Si | 0 |
Mn | 0,462 |
P | 0,0238 |
S | 0,0209 |
Cr | 17,197 |
Ni | 8,431 |
Zugabe:
Temperatur nach step 5: 1752°C
Behandlungszeit step 5: 16,08 Minuten
Analyse nach step 5 | |
C | 0,0397 |
Si | 0 |
Mn | 0,453 |
P | 0,024 |
S | 0,0208 |
Cr | 16,853 |
Ni | 8,479 |
- Zugabe:
- CaF2 710 kg
SiMn 900 kg
FeSi 1602 kg
Nimet 90 kg
Kühlmittel ss 500 kg
Analyse | |
C | 0,0558 |
Si | 0,5933 |
Mn | 1,2516 |
P | 0,0251 |
S | 0,0003 |
Cr | 18,485 |
Ni | 8,0788 |
Abstichgewicht: 90,5 t
Schlacke: 9,478 t
Claims (9)
- Verfahren zur Herstellung einer Metallschmelze in einer hüttentechnischen Anlage, insbesondere zum Frischen einer Metallschmelze, vorzugsweise zum Herstellen von Stahl, wie z.B. von legiertem, rostfreiem Stahl oder Edelstahl, welches Verfahren auf einer nach einem Prozeßmodell ablaufenden und die hüttentechnische Anlage steuernden Rechentechnik fußt, wobei das Prozeßmodell das Verhalten für mindestens einen variablen Prozeßparameter zwischen einer Ist-Prozeßgröße, einer Stellgröße und einer Prozeßendgröße beschreibt, und das Verfahren folgende Schritte umfaßt:mit dem Prozeßmodell wird mit zu einer bestimmten Zeit (ti) erhobenen Daten einer Ist-Prozeßgröße, wie der Temperatur der Schmelze und/oder der chemischen Zusammensetzung der Schmelze, durch Simulation mit Rechentechnik unmittelbar zum Zeitpunkt der Erhebung der Ist-Prozeßgröße eine Prozeßgröße für einen späteren Zeitpunkt (ti + dt), vorzugsweise eine Prozeßendgröße, ermittelt undbei Abweichungen der simulierten Prozeßgröße von einem gewünschten Soll-Wert werden mittels des Prozeßmodells mit Rechentechnik Korrekturmaßnahmen zur Änderung der Ist-Prozeßgröße errechnet und die Ist-Prozeßgröße entsprechend geändert,worauf zu einem späteren Zeitpunkt (ti + dt) mit weiters erhobenen Daten der Ist-Prozeßgröße das Verfahren wiederholt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß mittels des Prozeßmodells die zu einer bestimmten Zeit (ti) erhobenen Daten einer Ist-Prozeßgröße auf Plausibilität überprüft werden und ausschließlich plausible Daten zur Simulation der Prozeßgröße zur Verfügung gestellt werden und daß nicht-plausible Daten verworfen werden, wobei im letzteren Fall die Simulation aufgrund der zuletzt bestimmten plausiblen Daten fortgesetzt wird.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß Daten als plausibel zur Simulation der Prozeßgröße herangezogen werden, die innerhalb einer Bandbreite von ± 10%, vorzugsweise ± 5% eines Idealverlaufes des Herstellungsverfahrens, der auf Erfahrungswerten oder auf errechneten Werten beruht, liegen.
- Verfahren nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß ausgehend von einem als plausibel erkannten Wert, der jedoch von dem zuletzt gültigen Idealverlauf des Herstellungsprozesses abweicht, ein neuer Idealverlauf erstellt und dem weiteren Verfahren zugrunde gelegt wird.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß für jede variable Prozeßgröße ein eigenes Prozeßmodell-Modul Anwendung findet.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Prozeßmodell bzw. mindestens ein Modul des Prozeßmodells mit intelligenter Selbstoptimierung ausgestattet ist bzw. sind, z.B. unter Verwendung eines neuronalen Netzes.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß zumindest über einen Teil der Prozeßdauer die Zeitdifferenz zwischen zwei aufeinanderfolgenden Erhebungen einer Ist-Prozeßgröße sehr klein, vorzugsweise infinitesimal, ist.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß als Ist-Prozeßgrößen die chemische Zusammensetzung des Abgases und die chemische Zusammensetzung von chargiertem Material sowie gegebenenfalls die chemische Zusammensetzung der Schlacke erhoben werden.
- Verfahren nach einem oder mehreren der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß einstellbare Prozeßvariable, wie Fluß, Druck, Temperatur und Zusammensetzung von Gasen und/oder Mengen, Zusammensetzungen und Chargiergeschwindigkeiten von Zuschlagstoffen am Prozeßmodell optimiert werden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT17842001 | 2001-11-13 | ||
AT0178401A AT411068B (de) | 2001-11-13 | 2001-11-13 | Verfahren zur herstellung einer metallschmelze in einer hüttentechnischen anlage |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1310573A2 true EP1310573A2 (de) | 2003-05-14 |
EP1310573A3 EP1310573A3 (de) | 2008-01-23 |
EP1310573B1 EP1310573B1 (de) | 2012-09-26 |
Family
ID=3688935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02450259A Revoked EP1310573B1 (de) | 2001-11-13 | 2002-11-11 | Verfahren zur Herstellung einer Metallschmelze an Hand eines dynamischen Prozessmodells, inklusiv Korrekturmodell |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1310573B1 (de) |
KR (1) | KR100904006B1 (de) |
AT (1) | AT411068B (de) |
BR (1) | BRPI0206891B1 (de) |
ES (1) | ES2396053T3 (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006050963A2 (de) * | 2004-11-12 | 2006-05-18 | Sms Demag Ag | HERSTELLUNG VON ROSTFREISTAHL DER FERRITISCHEN STAHLGRUPPE AISI 4xx IN EINEM AOD-KONVERTER |
CN100507770C (zh) * | 2006-05-30 | 2009-07-01 | 宝山钢铁股份有限公司 | 热轧加热炉板坯剩余在炉时间确定方法 |
US8048196B2 (en) | 2006-11-30 | 2011-11-01 | Sms Siemag Aktiengesellschaft | Method and device for producing stainless steel without using a supply of electrical energy, based on pig-iron that has been pre-treated in a DDD installation |
EP2423336A1 (de) * | 2010-08-25 | 2012-02-29 | SMS Siemag AG | Verfahren zur Temperaturkontrolle des Metallbades während des Blasprozesses in einem Konverter |
US8430945B2 (en) | 2006-11-30 | 2013-04-30 | Sms Siemag Aktiengesellschaft | Method and device for producing pig-iron based stainless steel without using a supply of electrical energy |
EP2789960A1 (de) * | 2013-04-12 | 2014-10-15 | Refractory Intellectual Property GmbH & Co. KG | Verfahren insbesondere zur Bestimmung des Zustandes einer feuerfesten Auskleidung eines metallurgischen Schmelzgefässes |
US10935320B2 (en) | 2013-04-12 | 2021-03-02 | Refractory Intellectual Property Gmbh & Co. Kg | Method for determining the state of a refractory lining of a metallurgical vessel for molten metal in particular |
CN115261549A (zh) * | 2022-06-22 | 2022-11-01 | 包头钢铁(集团)有限责任公司 | 一种150t转炉高磷高硅单渣模型控制方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102004055206B4 (de) * | 2004-11-16 | 2012-08-30 | Sms Siemag Aktiengesellschaft | Verfahren zum Herstellen von Stahl mit hohem Mangan- und niedrigem Kohlenstoffgehalt |
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WO2006050963A2 (de) * | 2004-11-12 | 2006-05-18 | Sms Demag Ag | HERSTELLUNG VON ROSTFREISTAHL DER FERRITISCHEN STAHLGRUPPE AISI 4xx IN EINEM AOD-KONVERTER |
WO2006050963A3 (de) * | 2004-11-12 | 2006-09-28 | Sms Demag Ag | HERSTELLUNG VON ROSTFREISTAHL DER FERRITISCHEN STAHLGRUPPE AISI 4xx IN EINEM AOD-KONVERTER |
CN100507770C (zh) * | 2006-05-30 | 2009-07-01 | 宝山钢铁股份有限公司 | 热轧加热炉板坯剩余在炉时间确定方法 |
US8430945B2 (en) | 2006-11-30 | 2013-04-30 | Sms Siemag Aktiengesellschaft | Method and device for producing pig-iron based stainless steel without using a supply of electrical energy |
US8425831B2 (en) | 2006-11-30 | 2013-04-23 | Sms Siemag Aktiengesellschaft | Method and device for producing stainless steel without using a supply of electrical energy, based on pig-iron that has been pre-treated in a DDD installation |
US8048196B2 (en) | 2006-11-30 | 2011-11-01 | Sms Siemag Aktiengesellschaft | Method and device for producing stainless steel without using a supply of electrical energy, based on pig-iron that has been pre-treated in a DDD installation |
US8765051B2 (en) | 2006-11-30 | 2014-07-01 | Sms Siemag Aktiengesellschaft | Method and device for producing pig-iron based stainless steel without using a supply of electrical energy |
EP2423336A1 (de) * | 2010-08-25 | 2012-02-29 | SMS Siemag AG | Verfahren zur Temperaturkontrolle des Metallbades während des Blasprozesses in einem Konverter |
EP2789960A1 (de) * | 2013-04-12 | 2014-10-15 | Refractory Intellectual Property GmbH & Co. KG | Verfahren insbesondere zur Bestimmung des Zustandes einer feuerfesten Auskleidung eines metallurgischen Schmelzgefässes |
EP2789961A1 (de) * | 2013-04-12 | 2014-10-15 | Refractory Intellectual Property GmbH & Co. KG | Verfahren insbesondere zur Bestimmung des Zustandes des Abstichs eines metallurgischen Gefässes |
WO2014166678A1 (de) * | 2013-04-12 | 2014-10-16 | Refractory Intellectual Property Gmbh & Co. Kg | Verfahren insbesondere zur bestimmung des zustandes des abstichs eines metallurgischen gefässes |
WO2014166679A1 (de) * | 2013-04-12 | 2014-10-16 | Refractory Intellectual Property Gmbh & Co. Kg | Verfahren insbesondere zur bestimmung des zustandes einer feuerfesten auskleidung eines metallurgischen schmelzgefässes |
US10935320B2 (en) | 2013-04-12 | 2021-03-02 | Refractory Intellectual Property Gmbh & Co. Kg | Method for determining the state of a refractory lining of a metallurgical vessel for molten metal in particular |
CN115261549A (zh) * | 2022-06-22 | 2022-11-01 | 包头钢铁(集团)有限责任公司 | 一种150t转炉高磷高硅单渣模型控制方法 |
CN115261549B (zh) * | 2022-06-22 | 2023-09-26 | 包头钢铁(集团)有限责任公司 | 一种150t转炉高磷高硅单渣模型控制方法 |
Also Published As
Publication number | Publication date |
---|---|
BR0206891A (pt) | 2004-06-15 |
BRPI0206891B1 (pt) | 2016-07-05 |
EP1310573B1 (de) | 2012-09-26 |
ES2396053T3 (es) | 2013-02-18 |
AT411068B (de) | 2003-09-25 |
ATA17842001A (de) | 2003-02-15 |
KR20030040135A (ko) | 2003-05-22 |
EP1310573A3 (de) | 2008-01-23 |
KR100904006B1 (ko) | 2009-06-22 |
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