EP3201367B1 - Procédé et dispositif de détermination du moment d'allumage pour un procédé de soufflage à l'oxygène - Google Patents

Procédé et dispositif de détermination du moment d'allumage pour un procédé de soufflage à l'oxygène Download PDF

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Publication number
EP3201367B1
EP3201367B1 EP15750684.1A EP15750684A EP3201367B1 EP 3201367 B1 EP3201367 B1 EP 3201367B1 EP 15750684 A EP15750684 A EP 15750684A EP 3201367 B1 EP3201367 B1 EP 3201367B1
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Prior art keywords
oxygen
exhaust gas
value
time
ignition
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EP15750684.1A
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German (de)
English (en)
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EP3201367A1 (fr
Inventor
Bernhard Voglmayr
Franz Hartl
Andreas ROHRHOFER
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Primetals Technologies Austria GmbH
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Primetals Technologies Austria GmbH
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    • 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
    • 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
    • C21C5/38—Removal of waste gases or dust
    • 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
    • F27D19/00—Arrangements of controlling 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—Arrangement of monitoring devices; Arrangement of safety devices
    • F27D21/0014—Devices for monitoring temperature

Definitions

  • the invention relates to a method for determining the time of ignition in the inflation process, in particular in the LD method, in a converter in which the oxygen amount value and the exhaust gas temperature value are determined, and a corresponding device.
  • the aim of steelmaking is to produce steel, ie iron alloys with low carbon content and desired properties such as hardness, rust resistance or ductility.
  • the pig iron is refined with oxygen.
  • the oxidation process which lowers the carbon content (the refining), provides enough heat in these processes to keep the steel liquid, so external heat input is not necessary in the converters.
  • the blowing process can also be subdivided into inflation and bottom blowing processes. Bottom blowing techniques include the Bessemer process, the Thomas process, the racing fires and early blast furnaces. The best known inflation method is the LD method.
  • the converter may be mounted in a "doghouse” which has slidable gates and is designed to protect the environment from expulsion from the converter and to direct gas leakage between the converter manifold and the exhaust gas chimney into the chimney or secondary gas exhaust.
  • a "doghouse” which has slidable gates and is designed to protect the environment from expulsion from the converter and to direct gas leakage between the converter manifold and the exhaust gas chimney into the chimney or secondary gas exhaust.
  • the fire-side lining mainly hematite plates are used; certain zones receive refractory vaporisation or, in the flexible ceiling area, heat-resistant steel panels.
  • the combustion in the converter does not begin immediately with the beginning of the injection of oxygen, but is usually delayed by a few seconds up to 90 seconds, and then spontaneously use at an unpredictable time. Knowing the exact timing of ignition is very important because only from this point on oxygen will react in reaction with the melt and the actual duration of this reaction will be critical to process control and steel quality, especially carbon content. Together with other parameters, the time of ignition allows the blowing process to be controlled from beginning to end. Knowing the timing of the ignition can improve the quality of the steel, and re-inject oxygen (re-blowing) or re-carburizing (associated with renewed sulfur use). The repeatability of the blowing process is improved, which also has a positive effect on the further steps of the process chain, such as secondary metallurgy.
  • the thermal expansion in the head of the lance can be used to determine the timing of the ignition (by means of strain gauges).
  • strain gauges the thermal expansion in the head of the lance
  • the operator can directly see the reaction and recognize the ignition timing.
  • An open doghouse always carries an immense security risk.
  • the ignition timing can be set manually by pressing a button.
  • an installed camera allows the operator to track the reaction on a monitor.
  • An automatic optical method is the connection of the camera recording with an evaluation system, which analyzes the image material and thus automatically passes the ignition point to the process model.
  • the solutions with video camera have a high installation costs result, since the camera must be cooled accordingly and a non-pollutable opening clear view of the converter mouth must be guaranteed.
  • a disadvantage of the method of AT 299 283 B is that this provides only a single data value, which is often insufficient for the safe ignition detection of the inflation process.
  • the photocell could also be triggered by a single failure, such as a single spark close to the photocell, although the actual ignition of the oxygen has not yet taken place.
  • a plurality of temporally successive images of the area between the converter mouth and the exhaust hood are recorded by means of a CCD image sensor and by the sensor measured radiation intensity determines a course of the radiation intensity over time and the time at which a predetermined radiation intensity or a predetermined increase in the radiation intensity is reached, as the time of ignition determines.
  • a first object of the invention to provide a method which allows a reliable and redundant determination of the time of ignition.
  • a second object is the disclosure of a device which is particularly suitable for carrying out the method.
  • the object related to the method is achieved by specifying a method for determining the time of ignition in an oxygen blowing method, in particular in the case of the LD method, in a converter, wherein an oxygen quantity for the amount of inflated oxygen and an exhaust gas temperature value for the current exhaust gas temperature is determined by the oxygen blowing process resulting exhaust gases and the time at which a predetermined oxygen limit value for the amount of oxygen and at the same time reaches a predetermined exhaust gas temperature limit in the exhaust gas is determined as the time of ignition.
  • the device-related object is achieved by the specification of a device for determining the time of ignition in an oxygen blowing method, in particular in the LD method, comprising a converter which is provided for injecting oxygen, wherein a device for determining an oxygen amount value for the Amount of the inflated oxygen is provided and means for determining an exhaust gas temperature value for the current exhaust gas temperature is provided in the produced by the oxygen blowing exhaust gases and the time at which reaching a predetermined oxygen limit for the amount of oxygen and at the same time a predetermined exhaust gas temperature limit in Exhaust gas is effected, is defined as the time of ignition.
  • the currently measured Exhaust gas temperature value and the oxygen amount value transmitted to a computing unit.
  • the arithmetic unit comprises an evaluation algorithm which compares at least the currently measured exhaust gas temperature value and the oxygen quantity value with the exhaust gas limit temperature value and oxygen limit quantity value.
  • the invention By the invention, a reliable automatic ignition detection is possible.
  • the invention also makes it possible to achieve the target values of the process model more precisely. Also, a reduction of Nachblasroutinen done and O 2 , which is required in the blowing process can be saved. According to the invention, a generation of reproducible steel grades is now possible.
  • a cost-effective implementation is possible if an O 2 volumetric flow measurement is already present. The installation of such a measurement is cost-effective to retrofit, if this is not available.
  • a maximum utilization of crucible gas can be achieved, since this can be done reliably via the primary dedusting in the gasometer.
  • the exhaust gas temperature value is detected at an exhaust gas stack, here in particular at the vertical section of the exhaust gas chimney or at the section which is arranged in fluidic manner before the evaporative cooler inlet.
  • the exhaust gas temperature value may be detected at an evaporative cooler inlet of an evaporative cooler.
  • the oxygen amount value and the exhaust gas temperature value are determined continuously.
  • the oxygen amount value and the exhaust gas temperature value may be determined continuously after the start of the inflation of the oxygen and / or during the inflation or during the inflation process.
  • simplification in the method can be brought about by fewer measured values.
  • other positions are conceivable.
  • the oxygen amount value is determined by means of a volume flow sensor.
  • the oxygen is injected by means of a lance in the converter, the lance is connected to an oxygen supply with valve.
  • the determination of the oxygen quantity value is now preferably carried out by means of a volumetric flow sensor mounted in the region of the valve, in particular on the valve. There, a particularly simple determination of the oxygen amount value is possible.
  • the oxygen limit amount value and / or the exhaust gas limit temperature value are preferably determined empirically.
  • the limit values for signaling an ignition eg based on a Measurement series can be determined empirically. These can vary, for example, depending on the converter and converter content.
  • the limit values can be stored in a database. These can also be updated at certain intervals.
  • the evaluation algorithm is activated in the arithmetic unit only at the beginning of the oxygen blowing.
  • the evaluation algorithm can be activated in the arithmetic unit only during the oxygen blowing.
  • oxygen is blown onto the liquid metal melt.
  • This cumulative, blown O 2 amount is measured, for example via a volumetric flow sensor and transmitted together with the currently measured exhaust gas temperature value to a computer system.
  • the evaluation algorithm runs on the computer system.
  • the evaluation algorithm is now based on the following contexts: If the ignition has taken place, then an increase in the exhaust gas temperature value can be ascertained. Exceeds this value a preset limit value in the presence of a certain amount of inflated O 2 , it can be concluded that an ignition.
  • a feedback from the currently active process phase enables the evaluation to be actively activated.
  • the evaluation algorithm may be inactive during charging, after-blowing, parting, etc., but active at the beginning of the blowing cycle.
  • a monitoring of the relationship between a temperature increase and the oxygen amount value can be provided in the computing unit.
  • an alarm can be output.
  • a multimedia device to which the alarm is passed, may be provided.
  • This alarm can be fed to an alarm system or displayed to operators using a user interface (HMI) or other mobile visualization device.
  • a camera may be provided with a sensor containing a plurality of photodiodes, preferably with a CCD image sensor, wherein the camera is aligned with its optical axis on a gap between a converter mouth and a hood, and a computer for evaluating the images of the camera wherein the computer is programmed to determine a course of the radiation intensity over time on the basis of the radiation intensity recorded by the sensors.
  • the inventive method and the device according to the invention a reliable automatic ignition detection is possible. Also, the accuracy of the triggering time can be further increased. Also, a more accurate achievement of the target values of underlying process model and a reduction of Nachblasroutinen achievable.
  • O 2 which is required in the blowing process, saved. Reliable automatic ignition detection ensures the production of reproducible steel grades. This means that better set process models enable the production of better steel grades.
  • Fig. 1 the converter 1 is shown, in which there is the use to be refurbished, namely scrap and lumpy pig iron 2 and liquid pig iron 3.
  • the exhaust gas chimney 4 is arranged. This can be subdivided into different sections and fluidly connected to an evaporator cooler 16.
  • the raisable and lowerable lance 7 is inserted through the opening 8 of the exhaust stack 4 in the converter 1.
  • the lance 7 descends from the position H 2 , in which the lance 7 is drawn with continuous lines and where the oxygen supply is not yet open, to the operating position H 1 from. Already shortly before reaching the operating position H 1 , the oxygen supply is opened and the oxygen required for blowing 9 emerges. The lance 7 is further lowered while oxygen 9 exits the mouth until it reaches the operating position H 1 , which is shown in phantom.
  • the ignition should be made if no ignition delay occurs. However, if the ignition is delayed by supernatant scrap or the like, an amount of oxygen that does not participate in the freshness reaction flows out and must be taken into consideration.
  • the reaction gases 10 rise from the converter 1, which consist mainly of carbon monoxide (CO).
  • the hood 5 is then, as in Fig. 1 shown, open so that so-called false air 11 flows through the gap between the hood 5 and converter 1 and its converter mouth.
  • the carbon monoxide of the reaction gases 10 burns with air.
  • the incipient combustion of the blast oxygen with the carbon from the pig iron produces white glowing flames or gases.
  • the proposed method or device is based on the analysis of the oxygen amount value, ie the cumulative, blown O 2 amount, in conjunction with the exhaust gas temperature value located in the exhaust gas. These two parameters have a clear relationship, whereby a detonation detection is realized.
  • FIG. 2 the method is shown schematically.
  • an oxygen amount value 110 for the amount of inflated oxygen and an exhaust gas temperature value 20 for the current exhaust gas temperature in the exhaust gas produced by the oxygen blowing method are determined and the time at which a predetermined oxygen limit for the amount of oxygen and at the same time a predetermined exhaust gas temperature limit in the exhaust gas is reached, as the timing of the ignition sets.
  • the oxygen amount value 110 which is also referred to below as the blown O 2 amount 110, is measured, for example, via a volume flow measuring sensor and transmitted to a computer system 40 together with the currently measured exhaust gas temperature value 20.
  • the evaluation algorithm 30 runs on the computer system 40.
  • the exhaust gas temperature value 20 can be displayed, for example, at the evaporator inlet 15 (FIG. FIG. 1 ). Also, the exhaust temperature value 20 at the exhaust stack 4 (FIG. FIG. 1 ), in particular the fluid technology directly in front of the evaporator inlet 15 ( FIG. 1 ) connected portion 14 of the exhaust stack 4 ( FIG. 1 ). Also, it can be at the vertical section 17 ( FIG. 1 ) of the exhaust stack 4 ( FIG. 1 ). At these locations, the attachment of a temperature sensor 18 (FIG. FIG. 1 ) especially easy.
  • the oxygen amount value 110 and the exhaust gas temperature value 20 may be determined continuously or may also be determined continuously after the start of the inflation of the oxygen and / or during the inflation. Other constellations are conceivable as long as they serve the purpose.
  • the evaluation algorithm 30 is based on the following contexts: If the ignition has taken place, an increase in the exhaust gas temperature value 20 can be ascertained. Exceeds this exhaust gas temperature value 20 a preset limit with the simultaneous presence of a certain inflated O 2 amount 110, it can be concluded that an ignition.
  • an AND combination of the O 2 and temperature condition for example in the form of oxygen quantity> 270 Nm 3 AND exhaust gas temperature value> 500 ° C.
  • the oxygen limit value to be determined in advance for the amount of oxygen and the exhaust gas temperature limit value to be determined in advance for signaling an ignition can be determined empirically on the basis of a series of measurements. These can vary, for example, depending on the converter. However, other mathematical methods can be used to set the limits.
  • the evaluation can be actively switched as a function of this.
  • the evaluation algorithm 30 may be inactive during charging, after-blowing, parting, etc., but active at the beginning of the blowing cycle.
  • This alarm may be supplied to an alarm system 60, or displayed to operators via a human-machine interface 70 or other mobile visualization device 80.
  • the device according to the invention is particularly suitable for carrying out the method according to the invention.
  • the "uncertainty factor human" in connection with the ignition detection can be eliminated, whereby a higher or more reproducible product quality results.
  • the crucible driver no longer has to worry about the ignition detection or the process is simplified (saving a control element).
  • the safety can be increased because the doghouse at the beginning of the blowing phase does not have to be open.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
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Claims (20)

  1. Procédé de détermination du moment de l'allumage lors d'un procédé de soufflage d'oxygène, en particulier lors d'un procédé LD, dans un convertisseur (1),
    caractérisé en ce que
    une valeur de quantité d'oxygène (110) pour la quantité de l'oxygène soufflé et une valeur de température d'effluent gazeux (20) pour la température effective d'effluent gazeux au sein des effluents gazeux résultants du procédé de soufflage d'oxygène sont déterminées, et le moment auquel sont atteintes une valeur limite d'oxygène, définie à l'avance, pour la quantité de l'oxygène et simultanément une valeur unique de température d'effluent gazeux, définie à l'avance, au sein de l'effluent gazeux, est défini comme étant le moment de l'allumage.
  2. Procédé de détermination du moment de l'allumage selon la revendication 1,
    caractérisé en ce que
    la valeur de température d'effluent gazeux (20) est enregistrée au niveau d'une entrée d'appareil de réfrigération par évaporation d'un appareil de réfrigération par évaporation et/ou la valeur de température d'effluent gazeux (20) est enregistrée au niveau d'une cheminée d'effluent gazeux (4) en particulier au niveau de la section, raccordée de manière fluidique immédiatement avant l'entrée d'appareil de réfrigération par évaporation, de la cheminée d'effluent gazeux.
  3. Procédé de détermination du moment de l'allumage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la valeur de quantité d'oxygène (110) et la valeur de température d'effluent gazeux (20) sont déterminées en continu.
  4. Procédé de détermination du moment de l'allumage selon la revendication 1 ou 2,
    caractérisé en ce que
    la valeur de quantité d'oxygène (110) et la valeur de température d'effluent gazeux (20) sont déterminées en continu après le début du soufflage de l'oxygène et/ou pendant le soufflage.
  5. Procédé de détermination du moment de l'allumage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la valeur de quantité d'oxygène (110) est déterminée au moyen d'un capteur de mesure volumétrique.
  6. Procédé de détermination du moment de l'allumage selon la revendication 5,
    caractérisé en ce que
    l'oxygène est soufflé dans le convertisseur (1) au moyen d'une lance (7), dans lequel la lance (7) est reliée à une réserve d'oxygène grâce à un clapet, et dans lequel la détermination de la valeur de quantité d'oxygène (110) est réalisée grâce à un capteur de mesure volumétrique installé dans le secteur du clapet, en particulier au niveau du clapet.
  7. Procédé de détermination du moment de l'allumage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la valeur de quantité limite d'oxygène et/ou la valeur de température limite d'effluent gazeux sont déterminées de manière empirique.
  8. Procédé de détermination du moment de l'allumage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la valeur de température d'effluent gazeux (20) effective mesurée et la valeur de quantité d'oxygène (110) sont transmises à une unité de calcul (40) et l'unité de calcul (40) comprend un algorithme d'évaluation (30) qui compare au moins la valeur de température d'effluent gazeux (20) effective mesurée et la valeur de quantité d'oxygène (110) avec la valeur de température limite d'effluent gazeux et la valeur de quantité limite d'oxygène.
  9. Procédé de détermination du moment de l'allumage selon la revendication 8,
    caractérisé en ce que
    l'algorithme d'évaluation (30) est activé dans l'unité de calcul (40) avant le début du soufflage d'oxygène.
  10. Procédé de détermination du moment de l'allumage selon la revendication 8,
    caractérisé en ce que
    l'algorithme d'évaluation (30) est activé dans l'unité de calcul (40) seulement pendant le soufflage d'oxygène.
  11. Procédé de détermination du moment de l'allumage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la relation entre l'augmentation de température et la valeur de quantité d'oxygène (110) est en outre surveillée, et une alarme est émise en cas de non-occurrence de la relation, en particulier en cas de non-occurrence d'une augmentation de température.
  12. Procédé de détermination du moment de l'allumage selon la revendication 11,
    caractérisé en ce que
    l'alarme est retransmise à un système d'alarme (60) et/ou à une interface utilisateur (HMI = système d'interface utilisateur-machine) (70) et/ou à un appareil multimédia (80).
  13. Dispositif de détermination du moment de l'allumage pour un procédé de soufflage d'oxygène, en particulier pour un procédé LD, comprenant un convertisseur (1),
    caractérisé en ce que
    un appareil destiné à déterminer une valeur de quantité d'oxygène (110) pour la quantité de l'oxygène soufflé est prévu et un appareil destiné à déterminer une valeur de température d'effluent gazeux (20) pour la température d'effluent gazeux effective au sein des effluents gazeux résultants du procédé de soufflage d'oxygène est prévu et une unité de calcul est prévue, à laquelle sont transmises la valeur de température d'effluent gazeux (20) effective mesurée et la valeur de quantité d'oxygène (110), ladite unité comprenant un algorithme d'évaluation (30) qui compare au moins la valeur de température d'effluent gazeux (20) effective mesurée et la valeur de quantité d'oxygène (110) avec la valeur de température limite d'effluent gazeux et la valeur de quantité limite d'oxygène, et qui définit en tant que moment de l'allumage le moment pour lequel est constatée une atteinte d'une valeur limite d'oxygène, définie à l'avance, pour la quantité de l'oxygène et simultanément une valeur limite de température d'effluent gazeux, définie à l'avance, au sein de l'effluent gazeux.
  14. Dispositif selon la revendication 13,
    caractérisé en ce que
    un dispositif de réfrigération par évaporation (16) muni d'une entrée de dispositif de réfrigération par évaporation (15) et d'une cheminée d'effluent gazeux (4) est prévu, et la valeur de température d'effluent gazeux (20) est enregistrée au niveau de l'entrée de dispositif de réfrigération par évaporation (15) et/ou au niveau de la cheminée d'effluent gazeux (4), en particulier au niveau de la section, raccordée de manière fluidique immédiatement avant l'entrée de dispositif de réfrigération par évaporation (15), de la cheminée d'effluent gazeux (4).
  15. Dispositif selon la revendication 13 ou 14,
    caractérisé en ce que
    un capteur de mesure volumétrique destiné à déterminer la valeur de quantité d'oxygène (110) est prévu.
  16. Dispositif selon la revendication 15,
    caractérisé en ce que
    l'oxygène est soufflé dans le convertisseur (1) au moyen d'une lance (7), dans lequel la lance (7) est reliée à une réserve d'oxygène grâce à un clapet, et dans lequel le capteur de mesure volumétrique est installé dans le secteur du clapet, en particulier au niveau du clapet.
  17. Dispositif selon l'une quelconque des revendications 13 à 16,
    caractérisé en ce que
    une activation de l'algorithme d'évaluation (30) dans l'unité de calcul est prévue avant le début du soufflage d'oxygène.
  18. Dispositif selon la revendication 17,
    caractérisé en ce qu'une activation de l'algorithme d'évaluation (30) dans l'unité de calcul est prévue seulement pendant le soufflage d'oxygène.
  19. Dispositif selon l'une quelconque des revendications 13 à 18,
    caractérisé en ce que
    une surveillance de la relation entre une augmentation de température et la valeur de quantité d'oxygène (110) est prévue, et, une alarme peut être émise en cas de non-occurrence de la relation, en particulier en cas de non-occurrence d'une augmentation de température.
  20. Dispositif selon l'une quelconque des revendications 13 à 19,
    caractérisé en ce que
    un système d'alarme (60) et/ou une interface utilisateur (HMI = système d'interface humain-machine) (70) et/ou un appareil multimédia (80), au(x)quel(s) ou à laquelle est retransmise l'alarme, est ou sont prévus.
EP15750684.1A 2014-09-30 2015-08-06 Procédé et dispositif de détermination du moment d'allumage pour un procédé de soufflage à l'oxygène Active EP3201367B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14186962.8A EP3002342A1 (fr) 2014-09-30 2014-09-30 Procédé et dispositif de détermination du moment d'allumage pour un procédé de soufflage à l'oxygène
PCT/EP2015/068148 WO2016050399A1 (fr) 2014-09-30 2015-08-06 Procédé et dispositif de détermination de l'instant de l'allumage dans un procédé de soufflage d'oxygène

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EP3201367A1 EP3201367A1 (fr) 2017-08-09
EP3201367B1 true EP3201367B1 (fr) 2018-06-13

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EP14186962.8A Withdrawn EP3002342A1 (fr) 2014-09-30 2014-09-30 Procédé et dispositif de détermination du moment d'allumage pour un procédé de soufflage à l'oxygène
EP15750684.1A Active EP3201367B1 (fr) 2014-09-30 2015-08-06 Procédé et dispositif de détermination du moment d'allumage pour un procédé de soufflage à l'oxygène

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EP14186962.8A Withdrawn EP3002342A1 (fr) 2014-09-30 2014-09-30 Procédé et dispositif de détermination du moment d'allumage pour un procédé de soufflage à l'oxygène

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EP (2) EP3002342A1 (fr)
CN (1) CN106795573B (fr)
BR (1) BR112017006451B1 (fr)
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CN110129513B (zh) * 2019-05-05 2021-04-20 河钢股份有限公司承德分公司 预防电除尘器泄爆的方法
CN115491458B (zh) * 2021-06-19 2024-02-02 上海梅山钢铁股份有限公司 一种转炉声波离散除垢单元运行时间设定方法
CN115232908B (zh) * 2022-08-02 2024-06-14 广东韶钢松山股份有限公司 防止干法除尘泄爆的转炉炼钢方法
CN115491459A (zh) * 2022-08-30 2022-12-20 石钢京诚装备技术有限公司 一种干法除尘转炉开吹氧气流量爬坡的方法
CN116891922B (zh) * 2023-06-26 2025-05-16 南京钢铁股份有限公司 一种判断转炉开吹点火成功的方法

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JPS57203715A (en) * 1981-06-09 1982-12-14 Kawasaki Steel Corp Discriminating method of ignition in top-blown converter
CA2541092A1 (fr) * 2006-03-28 2007-09-28 Murray Thomson Detecteurs de rayonnement infrarouge pour diagnostic et controle des gaz de fours industriels
AT509866B1 (de) 2010-06-02 2011-12-15 Siemens Vai Metals Tech Gmbh Verfahren zum bestimmen des zeitpunktes der zündung beim aufblasverfahren
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CN106795573A (zh) 2017-05-31
EP3002342A1 (fr) 2016-04-06
BR112017006451A2 (pt) 2017-12-12
CN106795573B (zh) 2020-08-18
BR112017006451B1 (pt) 2022-01-18
EP3201367A1 (fr) 2017-08-09
WO2016050399A1 (fr) 2016-04-07

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