EP4264155A1 - Procédé et dispositif de régulation de profondeur de cavité tourbillonnaire dans un haut fourneau - Google Patents

Procédé et dispositif de régulation de profondeur de cavité tourbillonnaire dans un haut fourneau

Info

Publication number
EP4264155A1
EP4264155A1 EP21839515.0A EP21839515A EP4264155A1 EP 4264155 A1 EP4264155 A1 EP 4264155A1 EP 21839515 A EP21839515 A EP 21839515A EP 4264155 A1 EP4264155 A1 EP 4264155A1
Authority
EP
European Patent Office
Prior art keywords
spectrum
raceway
emitted
radar beam
blast furnace
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.)
Pending
Application number
EP21839515.0A
Other languages
German (de)
English (en)
Inventor
Lucas Pancratius Johannes BLEIJENDAAL
Stefan Born
Franciscus Theodorus DE GROOT
Hai Thong HO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tata Steel Ijmuiden BV
Original Assignee
Tata Steel Ijmuiden BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tata Steel Ijmuiden BV filed Critical Tata Steel Ijmuiden BV
Publication of EP4264155A1 publication Critical patent/EP4264155A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B1/28—Arrangements of monitoring devices, of indicators, of alarm devices
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/24—Test rods or other checking 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
    • 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
    • F27D21/02—Observation or illuminating 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
    • F27D2019/0028—Regulation
    • F27D2019/0034—Regulation through control of a heating quantity such as fuel, oxidant or intensity of current
    • 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
    • F27D2019/0028—Regulation
    • F27D2019/0071—Regulation using position sensors
    • 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
    • F27D21/02—Observation or illuminating devices
    • F27D2021/026—Observation or illuminating devices using a video installation

Definitions

  • the invention relates to a method and a device for raceway depth measurement in a blast furnace, and the use thereof in a control system.
  • Blast furnaces have been known for several hundred years. More than 1.1 billion tonnes of iron were produced globally in 2016 via the blast furnace (BF) route. Although the overall process and the chemical reactions inside a BF are well understood, it still remains a kind of black box when it comes to local flow conditions and the movement of solid particles, gas, and liquids inside. The conditions inside a blast furnace are hostile, inaccessible and therefore largely unknown. Measurements are complicated, especially in the bottom part of the blast furnace, if possible at all. For iron makers operational know-how and experience, to end up with hot iron having the desirable characteristics, is of significant importance. Measurements in the bottom part can only occur on or near the outer edge of the blast furnace. In the top part the conditions are, in general, more favourable.
  • preheated air and reducing agents gas, oil or pulverized coal
  • reducing agents gas, oil or pulverized coal
  • a very important process parameter is the size of the raceway, mainly the depth, which is formed largely by the flow of hot blast (oxygen enriched air) through the tuyeres.
  • the raceway depth is linked to the combustion of gas and injection coal in the bottom part of the blast furnace and thus far could not be measured accurately.
  • raceway blockages are a regular occurrence in blast furnace operation. These blockages mainly occur due to erratic movements in the burden.
  • Another undesired phenomenon is channelling which happens when the ascending gases in the furnace do not properly get uniformly distributed both radially and circumferentially in the furnace and find a passage of least resistance. This diversion of the gases upsets the preheat of the materials and the reduction process.
  • raceway depth depends on the coal injection rate, conversion, charging profiles (the way of loading the blast furnace), gas flow, cohesive zone characteristics, dead man characteristics, tapping practice and coal I hot blast flow mixture. It is also believed that raceways "collapse" at certain points in time and are built up after that. This is a cyclical movement but it seems to be an unpredictable process.
  • CN106191350A describes the use of a radar system to measure the raceway depth according to measurements over a long period of time. The measurements are performed at individual tuyeres to fill the model with data. However, the method proposed is not accurate enough for process control. Radar measurement systems as such are available from local suppliers on the market.
  • W02020108987-A1 discloses a method for raceway depth control in a blast furnace by means of radar sensor measurements which are compared by the control system with a predetermined raceway depth.
  • EP3029160A1 discloses an abnormality detection method and a blast furnace operation method of detecting abnormality of a blast furnace from a tuyere image shot by a camera installed in the vicinity of a tuyere of the blast furnace using brightness information of a raceway portion.
  • a method for raceway depth (R) measurement in a blast furnace provided with a plurality of tuyeres for injecting hot blast and powder coal into the blast furnace comprising carrying out a simultaneous raceway depth measurement (RM) and a recording of the EM-spectrum with a wavelength of 280 nm up to 5.50 pm emitted or reflected from within the raceway through a tuyere, wherein the raceway depth is measured by means of a radar sensor capable of emitting a radar beam and receiving a reflected radar beam, and wherein the emitted EM-spectrum is recorded by EM-spectrum recording means, wherein a first spectral divider is placed in the optical path between the EM-spectrum recording means and the raceway and in the optical path between the radar sensor and the raceway, wherein
  • the first spectral divider is at least partly transparent for the emitted EM-spectrum and at least partly reflective for the reflected radar beam, or
  • the first spectral divider is at least partly reflective for the emitted EM- spectrum and at least partly transparent for the reflected radar beam
  • the radar sensor is positioned such that the optical paths of the reflected radar beam and the emitted EM-spectrum converge on the spectral divider and wherein the optical paths of the EM-spectrum and the reflected radar beam between the first spectral divider and the raceway coincide, and wherein the reflected radar beam is received by the radar sensor and the emitted EM-spectrum is recorded by the EM- spectrum recording means.
  • This method allows the simultaneous measurement of the raceway depth (RM) through a tuyere and allows an observation of the raceway in the UV, visual and IR spectrum. This means that the same spot of the raceway is observed simultaneously.
  • This provides information about the process temperatures and changes therein, allows for a visual inspection to detect raceway collapse, blockage and the like, and allows the process control model or operator to act upon these occurrences, e.g. by changing the amount of injected hot blast or powder coal through the tuyere.
  • W02020108987-A1 discloses a method for raceway depth control in a blast furnace by means of radar sensor measurements of the raceway only, which are combinable with top gas temperatures, infrared and I or visual light images, spectrometric measurements, CO and I or CO2 amounts, wall temperatures and pressure measurements.
  • it does not disclose the method of performing a simultaneous observation of the same spot with radar sensor and EM-spectrum recording means, nor does it solve the problem of the sensor and the recording means being in each other's optical paths.
  • the first spectral divider may consist of a wire mesh, preferably a woven mesh, preferably wherein the warp and the shute wires are perpendicular, which is at least partly transparent for the emitted EM-spectrum and at least partly reflective for the reflected radar beam.
  • the first spectral divider may be a beam splitter which is at least partly reflective for the emitted EM-spectrum and at least partly transparent for the reflected radar beam.
  • the optical paths of the reflected radar beam and the EM-spectrum coincide between the raceway and the first spectral divider.
  • the EM-spectrum continues along its original optical path and the reflected radar beam is diverted to the radar sensor or the reflected radar beam continues along its original optical path and the EM-spectrum is diverted to the EM-spectrum recording means. This is achieved by placing the first spectral divider under an angle in the optical path of the reflected radar beam and the emitted EM- spectrum.
  • the method according to the invention may be carried out through one tuyere, but it is preferable that a method is carried out through a plurality of tuyeres, preferably divided over the circumference of the blast furnace.
  • a device according to the invention for each tuyere a device according to the invention will be needed, each device comprising at least a radar sensor, an EM- spectrum recording means and a first spectral divider. It is not necessary to equip all tuyeres of the BF with a device according to the invention, but it is possible.
  • the angle between the optical path of the emitted radar beam and the optical path of the observing EM-spectrum recording means has a value of 13, and wherein the first spectral divider is positioned under an angle of Vi 13 with respect to the optical path of the visible light.
  • the EM-spectrum recording means comprises one or more of an IR-detector, an UV-detector and a visible light camera. By means of a proper selection of one or more of these recording means a more or less elaborate observation of the raceway can be made.
  • a peephole window is provided in the optical path for the visible part of the EM-spectrum to allow a simple visual observation of the raceway.
  • the peephole window consists of glasses made of regular glass or fused- silica or sapphire. Peephole made of regular glass and do not transmit long-wave and mid-wave infrared light. The fused silica and sapphire transmit longer wavelength infrared and will allow for simultaneous thermo-vision measurements.
  • the invention is also embodied in a device for raceway depth measurement in a blast furnace comprising a radar sensor for emitting and receiving a radar beam through a tuyere, and EM-spectrum recording means for a simultaneous recording of an EM-spectrum with a wavelength of 280 nm up to 5.5 pm which is, in use, emitted from the raceway through the tuyere, wherein a first spectral divider is provided in the optical path between the EM-spectrum recording means and the raceway and in the optical path between the radar sensor and the raceway, wherein
  • the first spectral divider is at least partly transparent for the emitted EM-spectrum and at least partly reflective for the reflected radar beam, or
  • the first spectral divider is at least partly reflective for the emitted EM- spectrum and at least partly transparent for the reflected radar beam
  • the radar sensor is positioned such that the optical paths of the reflected radar beam and the emitted EM-spectrum converge on the spectral divider and wherein the optical paths of the EM-spectrum and the reflected radar beam between the first spectral divider and the raceway coincide, and wherein in use, the reflected radar beam can be received by the radar sensor and the emitted EM-spectrum can be recorded by the EM-spectrum recording means.
  • the EM-spectrum recording means comprises one or more of an IR-detector, an UV-detector and a visible light camera. By means of a proper selection of one or more of these recording means a more or less elaborate observation of the raceway can be made.
  • a peephole is provided in the optical path for the visible part of the EM-spectrum to allow a simple visual observation of the raceway.
  • the angle between the optical path of the emitted radar beam and the optical path of the observing EM-spectrum recording means has a value of 13, and wherein the first spectral divider is positioned under an angle of Vi 13 with respect to the optical path of the visible light.
  • the angle 13 is between 80 and 100° and more preferable is an angle 13 of 90°, in which case the first spectral divider is positioned in the optical path under an angle of 45°.
  • the first spectral divider may consist of a wire mesh which is at least partly transparent for the emitted EM-spectrum and at least partly reflective for the reflected radar beam, or the first spectral divider may be a beam splitter which is at least partly reflective for the emitted EM-spectrum and at least partly transparent for the reflected radar beam.
  • the wire mesh consists of an electrically conductive wire with a distance between subsequent threads of the mesh of about 75/1000th and 125/1000th of the wavelength of the radar beam.
  • the wire mesh is disposed onto a transparent carrier, to support and flatten the wire mesh.
  • the carrier material must be transparent for the radar beam and the EM-spectrum of interest.
  • the transparent carrier consists of transparent polymer material, glass, fused silica or sapphire.
  • an ITO transparent substrate such as a plastic or glass substrate.
  • ITO Indium tin oxide
  • ITO is a ternary composition of indium, tin and oxygen in varying proportions. ITO is, when the layer is sufficiently thin, transparent to visible light and UV, but not to IR, and it reflects radar beams.
  • a second spectral divider (13a) is present in the optical path of the EM-spectrum and wherein the second spectral divider (13a) redirects part of the EM-spectrum to a detector for the IR-, visible and/or EM spectrum (12a), and wherein the unredirected remainder of the EM-spectrum passes the first spectral divider (13) towards a visible light camera (12) and/or the peephole.
  • This embodiment allows the simultaneous observation by three different means (see e.g. figure 6).
  • the invention is also embodied in the use of the method and the device according to the invention in a control system for controlling the hot blast flow through the plurality of tuyeres by comparing the raceway depth measurement with the predetermined raceway depth for the plurality of tuyeres in order to achieve a uniform raceway depth over the circumference of the blast furnace.
  • Controlling the hot blast flow though the plurality of tuyeres has the advantage that control takes place in a synchronised manner. The individual differences over the plurality of tuyeres between the raceway depth measurement and the predetermined raceway depth can thus be controlled.
  • Hot blast flow as well as powder coal injection (PCI) over the circumference of the blast furnace can be independently controlled by the control system by valves positioned at the tuyeres.
  • the valves can be opened or closed in a manner known per se.
  • the predetermined raceway depth is a depth that is set according to historical measurements and the results of these measurements can change over time, under specific circumstances and is relative to a specific blast furnace as well.
  • the control system carries out the raceway depth measurement through a plurality of tuyeres by means of a plurality of devices according to the invention divided over the circumference of the blast furnace.
  • Measurements of the raceway depth with radar sensors through different tuyeres have revealed that raceway depths differ largely over the circumference of the blast furnace.
  • a uniform raceway depth over the circumference of the blast furnace is preferred. Since a blast furnace is equipped with a plurality of tuyeres divided over the circumference of the blast furnace, a plurality of radar sensors divided over the circumference of the blast furnace enables a more consistent control of the hot blast flow through the plurality of tuyeres.
  • the plurality of devices according to the invention gather the data from the raceway depth and the data is sent to the control system. Then the data is processed by the control system.
  • the predetermined raceway depth could be set as a raceway depth range, by defining a minimum and a maximum raceway depth between which values the raceway depth is believed to have an optimal value. It is further believed to be beneficial that the raceway depth is uniform over the circumference of the blast furnace so as to achieve maximum stability, yield, speed and product quality.
  • control system changes the hot blast flow and/or PCI through one or more tuyeres when the raceway depth measurement has a deviating value from the target raceway depth.
  • the pre-set raceway depth is the ideal situation set for an optimal process inside the blast furnace.
  • the plurality of devices according to the invention send the raceway depth measurements to the control system in a continuous manner. It is preferred to control the hot blast flow through every tuyere individually, but also continuously. Controlling every tuyere individually guarantees that every single tuyere can be set to a hot blast flow value and PCI-rate independently of the other tuyeres. Since modern blast furnaces are producing iron in a continuous manner, this means it is preferred that the measurements are also done in a continuous manner to maintain the raceway depth at its pre-set value.
  • FIG 9b a result of a raceway measurement (RM) is indicated.
  • the end of the tuyere is about 3.2 m, and the peak between the dashed vertical lines is the raceway measurement.
  • the shape of the peak is indicative for the shape and depth of the raceway and these results and the changes therein can be used in an appropriate control system.
  • the signal between 0 and 3.2 m are reflections that extinguish to a stable value of about 30-40 dB.
  • the spectral divider consisted of a woven square "100 Mesh Copper .0012” Wire Dia" with 79% open area supplied by TWP Inc.
  • the mesh has wire diameters of 0.03 mm (0.0012 inch) and openings of 0.224mm.
  • the mesh reflects reflect radar and transmits light.
  • the radar transmitter and receiver is a Vegapuls 64 working at 80 GHz.
  • the sensor has a dynamic range of 120dB and has been originally designed to measure liquid levels in tanks.
  • the sensor has an accuracy of +/- 1mm and can measure up to a distance of 30 meter at process conditions up to 200°C and a pressure of 25 bar.
  • the frequency of 80 GHz allows for good focussing of the signal with a beam angle of 8° .
  • the radar-beam is not circular but elliptical. The orientation of the radar around the axis will therefore likely have some influence on the signal strength (amplitude).
  • the depth of blast furnace raceways is measured as follows: a radar signal is sent into the blast furnace via a tuyere peephole and the travel time of the signal reflection from the back of the raceway is determined.
  • the tuyeres of the blast furnace are also equipped with EM-spectrum recording means (in this example visible light cameras) to check for tuyere blockages.
  • EM-spectrum recording means in this example visible light cameras
  • a conductive wire mesh about with gaps of about l/10th the radar wavelength (0.375mm) can be used to reflect the radar signal while transmitting light of shorter wavelength.
  • a wire mesh with thin wires and large open area can be selected for efficient separation.
  • Figure 1 shows a section view of a blast furnace
  • Figure 2 shows a part of the section of figure 1 in enlarged view
  • FIG. 3 shows the system when in operation
  • Figure 4 shows the two main embodiments of the device according to the invention.
  • Figure 5 shows a preferred embodiment of the device according to the invention
  • Figure 6 shows an embodiment with two spectral dividers, two EM-spectrum recording means and a radar sensor
  • Figure 7 and 8 shows the principle of the coinciding optical paths between raceway and first spectral divider.
  • Figure 9 shows an example of a raceway measurement.
  • Figure 10 shows the flow chart of the control system.
  • Figure 1 shows a schematic section view of a blast furnace (1) having a shaft (2), a cohesive zone (3), a dripping zone (4) and a dead man zone (5).
  • a blast furnace (1) having a shaft (2), a cohesive zone (3), a dripping zone (4) and a dead man zone (5).
  • a raceway (6) is shown having a raceway depth (R).
  • FIG. 2 shows the raceway depth (R) of a raceway (6) in more (but still schematic) detail.
  • Raceways are formed in the blast furnace coke bed in front of the so- called bird's nest (7) by a hot blast flow (8) through a tuyere (9).
  • the bird's nest (7) has a bowl like shape and is located between the raceway (6) and the dead man zone
  • the position of the tuyere (9) is indicated and is installed through an opening in a wall (14) of the blast furnace (1).
  • the arrow in the figure shows the flow of hot blast (8) to pass through the tuyere (9) into the coke bed in front of the bird's nest (7) of the dripping zone (4) and thereby forms a raceway (6) having a raceway depth (R).
  • a bustle pipe (10) is connected to a tuyere (9).
  • the bustle pipe (10) runs around the circumference of the blast furnace and provides the tuyeres (9) with hot blast flow (8) via a valve (18).
  • a coal injection lance (11) is also part of the configuration.
  • a radar sensor (15) is shown which is configured to measure through a tuyere (9) of the blast furnace (1).
  • the radar sensor (15) sends its signal through the tuyere (9) and measures the raceway depth (R) of the formed raceway (6).
  • the radar sensor (15) then sends the raceway depth measurement to the control system.
  • Figure 4 depicts the embodiment where the first spectral divider (13) redirects the emitted and reflected radar to the tuyere and the raceway v.v. under an angle 13.
  • the first spectral divider (13) may be a wire mesh that reflects the radar beam but is at least partly transparent for the EM-spectrum emitted by the raceway.
  • Figure 4(ii) depicts the embodiment where the first spectral divider (13) redirects the emitted EM-spectrum under an angle 13 to the EM-spectrum recording means (12), whereas the emitted and reflected radar to the tuyere and the raceway v.v. goes in an uninterrupted straight line.
  • the first spectral divider (13) may be a beam splitter that reflects the EM-spectrum but is at least partly transparent for the radar beam reflected by the raceway.
  • Figure 6 shows a special embodiment of the device according to the invention where two spectral dividers are used.
  • the first spectral divider (13) is a wire mesh that reflects the radar beam but is at least partly transparent for the EM-spectrum emitted by the raceway.
  • This embodiment allows for a more detailed analysis of the EM-spectrum than the ones with only one spectral divider.
  • Figure 7 and 8 illustrates the feature of the invention of the parallel (figure 7) and the coinciding (figure 8) optical paths of the emitted and reflected radar beam and the emitted EM-spectrum between the raceway (RW) and the first spectral divider (13).
  • the term "coinciding optical paths” is deemed to include “parallel optical paths”.
  • Figure 9 a result of a raceway measurement (RM) is shown and described in more detail herein above in the example section.
  • FIG. 10 shows a flow chart of a method according to the invention.
  • a plurality of radar sensors (15) and EM-spectrum recording means (12) carry out a raceway depth measurement (RM) through a plurality of tuyeres (9) divided over the circumference of the blast furnace (1).
  • the raceway depth measurement (RM) is the result of a signal from the raceway depth (R) of a specific raceway (6).
  • This raceway depth measurement (RM) is then sent to the control system (16).
  • the control system is controlling the processes of the blast furnace (1) by controlling the hot blast flow (8) and optionally the powder coal injection or gas injection over the circumference of the blast furnace can be independently controlled by the control system by valves positioned at the tuyeres.
  • the control system (16) compares the raceway depth measurements (RM) with pre-set raceway depth (RP) values. These pre-set values and are mainly based on historical data stored in the control system.
  • the control system controls the hot blast flow, PCI and/or gas injection through the plurality of tuyeres (9) according to the difference between the raceway depth measurement (RM) and the predetermined raceway depth (RP) in order to achieve a uniform raceway depth (R) over the circumference of the blast furnace (1).
  • the control system (16) is also equipped to gather data from a number of other sensors, like top gas temperatures, top gas compositions, spectrometric measurements, wall temperatures and pressure measurements. These other measurements are indicated by (M).
  • the control system (16) is adjusted to not only gather the other measurement data (M) but also to analyse them, combine them with the raceway depth measurements (RM) and then adjust the hot blast flow (8) through the tuyeres (9) accordingly.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)

Abstract

L'invention concerne un procédé de régulation de profondeur de cavité tourbillonnaire dans un haut fourneau, un dispositif de mesure de profondeur de cavité tourbillonnaire dans un haut fourneau et une utilisation associée.
EP21839515.0A 2020-12-18 2021-12-16 Procédé et dispositif de régulation de profondeur de cavité tourbillonnaire dans un haut fourneau Pending EP4264155A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20215710 2020-12-18
PCT/EP2021/086353 WO2022129442A1 (fr) 2020-12-18 2021-12-16 Procédé et dispositif de régulation de profondeur de cavité tourbillonnaire dans un haut fourneau

Publications (1)

Publication Number Publication Date
EP4264155A1 true EP4264155A1 (fr) 2023-10-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP21839515.0A Pending EP4264155A1 (fr) 2020-12-18 2021-12-16 Procédé et dispositif de régulation de profondeur de cavité tourbillonnaire dans un haut fourneau

Country Status (2)

Country Link
EP (1) EP4264155A1 (fr)
WO (1) WO2022129442A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101704982B1 (ko) 2013-07-29 2017-02-08 제이에프이 스틸 가부시키가이샤 이상 검지 방법 및 고로 조업 방법
CN106191350B (zh) 2016-08-30 2018-04-17 武汉钢铁有限公司 基于定点雷达的高炉下部风口工作状况评估方法
CN106939365A (zh) * 2017-01-25 2017-07-11 内蒙古科技大学 分光器
JP2022509210A (ja) 2018-11-27 2022-01-20 タタ、スティール、アイモイデン、ベスローテン、フェンノートシャップ 高炉におけるレースウェイ深さの制御のための方法及びシステム

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