EP1910763A1 - Verfahren zur bestimmung mindestens einer zustandsgrösse eines elektrolichtbogenofens und elektrolichtbogenofen - Google Patents
Verfahren zur bestimmung mindestens einer zustandsgrösse eines elektrolichtbogenofens und elektrolichtbogenofenInfo
- Publication number
- EP1910763A1 EP1910763A1 EP06764149A EP06764149A EP1910763A1 EP 1910763 A1 EP1910763 A1 EP 1910763A1 EP 06764149 A EP06764149 A EP 06764149A EP 06764149 A EP06764149 A EP 06764149A EP 1910763 A1 EP1910763 A1 EP 1910763A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric arc
- arc furnace
- determined
- signal
- measured
- 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.)
- Withdrawn
Links
- 238000010891 electric arc Methods 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000002893 slag Substances 0.000 claims abstract description 35
- 238000012546 transfer Methods 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims description 20
- 230000005284 excitation Effects 0.000 claims description 18
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000011156 evaluation Methods 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 11
- 230000001133 acceleration Effects 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000001228 spectrum Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 2
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 2
- 239000004571 lime Substances 0.000 claims description 2
- 230000004044 response Effects 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000013528 artificial neural network Methods 0.000 claims 1
- 239000004020 conductor Substances 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000010355 oscillation Effects 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004886 process control Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005236 sound signal Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000003923 scrap metal Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
-
- 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
- C21C5/52—Manufacture of steel in electric furnaces
-
- 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
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
- F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
- F27B3/28—Arrangement of controlling, monitoring, alarm or the like 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
-
- 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
- C21C5/52—Manufacture of steel in electric furnaces
- C21C2005/5288—Measuring or sampling 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Definitions
- the invention relates to a method for determining at least one state variable of an electric arc furnace with at least one electrode, wherein the energy supply is determined in the electric arc furnace with the aid of at least one electrical sensor.
- the invention also relates to an electric arc furnace with a furnace vessel and with at least one electrode, wherein a power supply is provided per electrode.
- the object of the invention is to enable an improved determination of state variables of the electric arc furnace.
- the height of the foamed slag can be determined as the state variable.
- vibrations i. Structure-borne noise
- at least one acceleration sensor to be measured at the electric arc furnace using at least one acceleration sensor.
- vibrations i. Structure-borne noise, measured from an arc of the at least one electrode of the electric arc furnace.
- the excitation signal can be formed by multiplying the current signal by itself, ie by squaring.
- a voltage signal can be measured and used to form the excitation signal.
- the measurement and / or use of the voltage signal is performed alternatively or additionally to the measurement and use of the current signal.
- the excitation signal can be formed by multiplying the current signal by the voltage signal.
- the transfer function can be determined via a cross-power spectrum.
- the transfer function can be evaluated at at least one discrete frequency.
- the at least one discrete frequency can be a multiple of the frequency of the power input into the arc or in the electric arc furnace.
- an electric arc furnace with a furnace vessel and at least one electrode, wherein each electrode is provided with a power supply and wherein for performing a method mentioned above in its various embodiments, at least one electrical sensor to a power supply and at least one structure-borne sound sensor Detecting vibrations on the wall of the furnace vessel provided hen is.
- the advantages of the electric arc furnace according to the invention are largely analogous to the advantages of the process according to the invention.
- an electrical sensor can be provided per electrode.
- the at least one structure-borne sound sensor can be designed as an acceleration sensor.
- a structure-borne noise sensor can be provided per electrode.
- the one or more structure-borne sound sensors can be arranged on a wall of the furnace vessel opposite the respective electrode.
- the at least one electrical sensor and the at least one structure-borne sound sensor can be coupled to a signal processing device.
- At least one optical waveguide can be provided for coupling the at least one structure-borne sound sensor to the signal processing device.
- the at least one structure-borne sound sensor can be connected to the optical waveguide via at least one signal line and via an optical device arranged upstream of the optical waveguide.
- the at least one signal line can be protected.
- the signal processing device can be coupled to a control device for the electric arc furnace.
- the power supply device 12 preferably has a furnace transformer.
- three electrodes 3a, 3b, 3c are in the electric arc furnace charging materials, such as scrap and / or steel, possibly with alloying agents and / or additives, melted.
- slag 15 is formed and foamed by blowing in a mixture of media, whereby energy is introduced by means of an arc 18 (see FIG. 2) attached to the at least one electrode 3, 3a, 3b, 3c forms to improve.
- electrical sensors 13a, 13b, 13c are provided at the power supply lines of the electrodes 3a, 3b, 3c, by means of which current and / or voltage or the energy supplied to the electrodes 3a, 3b, 3c can be measured.
- the electrical sensors 13a, 13b, 13c are coupled to a signal processing device 8, for example via signal lines 14a, 14b, 14c designed as cables for electrical measuring signals.
- a signal processing device 8 for example via signal lines 14a, 14b, 14c designed as cables for electrical measuring signals.
- structure-borne noise sensors 4a, 4b, 4c for measuring vibrations on the furnace vessel 1 are arranged.
- the structure-borne sound sensors 4, 4a, 4b, 4c can be arranged indirectly and / or directly connected to the furnace vessel 1 or to the wall 2 of the furnace vessel 1.
- the sensors for structure-borne sound measurement i. the structure-borne noise sensors 4, 4a, 4b, 4c may be arranged on the outer wall of the furnace vessel 1.
- Structure-borne sound sensors 4, 4a, 4b, 4c may, for example, be arranged at uniform intervals around the furnace vessel 1.
- the structure-borne sound sensors 4a, 4b, 4c need not necessarily be arranged on the outer wall of the oven vessel 1.
- At least one sensor 4a, 4b, 4c which is associated with an electrode 3a, 3b, 3c, arranged at a location with the smallest possible distance to this electrode 3a, 3b, 3c, preferably at a location on the outer wall of the furnace vessel 1 be.
- the structure-borne noise is conducted through the steel bath 16 and / or through the foamed slag 15 to the furnace vessel 1 and can be measured in the medium and / or directly on the furnace vessel 1 in the form of vibrations.
- the structure-borne noise sensors 4, 4a, 4b, 4c are connected to the signal processing device 8.
- the signals which are given by the twill sound sensors 4, 4a, 4b, 4c to the signal processing device 8 are at least partially conducted via an optical waveguide 7.
- At least one optical device 6 is arranged, which is used for amplifying and / or converting signals of the one or more structure-borne sound sensors 4, 4a, 4b, 4c is used.
- signal lines 5, 5a, 5b, 5c may be provided, the signals of the structure-borne sound sensors 4a, 4b, 4c conduct.
- the signal lines 5, 5a, 5b, 5c are preferably protected from heat, electromagnetic fields, mechanical stress and / or other loads.
- the electrical sensors 13a, 13b, 13c can preferably be connected to the signal processing device 8 via signal lines 14a, 14b, 14c, which are designed as cables.
- evaluation data are determined from the measurement signals of the structure-borne sound sensors 4, 4a, 4b, 4c and from the measurement signals of the electrical sensors 13a, 13b, 13c.
- the evaluation data relate to at least one state variable of the electric arc furnace, the evaluation data preferably referring to the foam slag 15 (see FIG. 2) or its height.
- the signal processing device 8 outputs a status signal 10, preferably the currently calculated and / or precalculated level of the foamed slag 15, to a control device 9 for the electric arc furnace.
- the status signal 10 at least partially represents the evaluation data.
- the regulating device 9 determines control signals 11 for the electric arc furnace, for example for controlling the injection of mixed media, the introduction of coal, the introduction of oxygen and / or other substances into the electric arc furnace.
- control signals 11 for the control or for the regulation of the position or the height of the at least one electrode 3, 3a, 3c can be determined.
- one or more control means are provided for controlling the Lifting or lowering of the electrodes 3, 3a, 3b, 3c provided and coupled to the control device 9.
- a non-illustrated control computer can be coupled, by means of which the structure and the height of the foamed slag 15 can be controlled or regulated.
- the control computer outputs actuating signals 11, in particular to a feed device of the electric arc furnace.
- the control computer may have the signal processing device 8 and / or the control device 9.
- a feeding apparatus of the electric arc furnace may include a so-called injection lance by means of which carbon, oxygen and / or lime are introduced into the electric arc furnace, i. be blown into the furnace vessel 1 of the electric arc furnace.
- the substances mentioned above are in particular blown into the foamed slag 15 above the steel bath 16.
- mixed air is supplied into the foamed slag 15 with the aid of the air supply apparatus.
- the carbon converts to carbon dioxide and / or carbon monoxide, so that foamed slag 15 is formed.
- the energy input by means of the arc 18 is improved.
- losses are reduced by radiation in the electric arc furnace.
- the electric arc furnace shown in FIG 1 is formed in an exemplary embodiment as a three-phase arc furnace. In principle, the invention is applicable to a wide variety of types of electric arc furnaces, for example also in direct-current furnaces.
- FIG. 2 shows in a simplified representation an electrode 3, 3a, 3b, 3c with an arc 18 in an electric arc furnace.
- a structure-borne sound sensor 4, 4a, 4b, 4c, which is connected to a signal line 5, 5a, 5b, 5c, is arranged on the wall 2 of the furnace vessel 1 of the electric arc furnace, with the aid of which measuring signals to a signal processing device 8 (see FIG. 1). can be directed.
- the steel bath 16 and the foamed slag 15 are shown in the furnace vessel 1.
- the height of the foamed slag 15 can be determined in the signal processing device 8 by means of a transfer function of structure-borne noise in the electric arc furnace.
- the transfer function characterizes the transmission path 17 of structure-borne noise, schematically indicated in FIG. 2, from the excitation to the detection.
- the structure-borne sound is excited by the coupling of power to the electrodes 3, 3a, 3b, 3c in the arc 18.
- the structure-borne noise ie the vibrations caused by the excitation, is at least partially covered by the liquid steel bath 16 and / or the steel bath 16 Foam slag 15 transferred to the wall 2 of the electric arc furnace.
- a transmission of structure-borne noise may additionally, at least partially also be done by not yet melted feed material in the electric arc furnace.
- the detection of structure-borne noise is carried out by structure-borne sound sensors 4, 4a, 4b, 4c, which are arranged on the wall 2 of the furnace vessel 1 of the electric arc furnace.
- the structure-borne noise sensors 4, 4a, 4b, 4c take vibrations on the walls 2 of the furnace vessel. 1 on.
- the structure-borne noise sensors 4, 4a, 4b, 4c are preferably designed as acceleration sensors.
- the structure-borne sound sensors 4, 4a, 4b, 4c are preferably mounted above the foam-slag zone.
- Structure-borne sound sensors 4, 4a, 4b, 4c are preferably arranged on the opposite sides of the electrodes 3, 3a, 3b, 3c on the wall 2 of the electric arc furnace.
- the electrical sensors 13a, 13b, 13c detect current and / or voltage signals of the electrodes 3, 3a, 3b, 3c. Current and / or voltage signals are preferably detected time-resolved.
- the signals of the structure-borne noise sensors are guided via protected lines 5, 5a, 5b, 5c into an optical device 6 (see FIG. 1).
- the optical device 6 is preferably arranged relatively close to the actual electric arc furnace.
- the optical device 6 serves to amplify and convert the signals of the structure-borne sound sensors 4, 4a, 4b, 4c. In the optical device 6, these signals are converted into optical signals and transmitted via an optical waveguide 7 without interference over comparatively longer distances, e.g. 50 to 200 m, passed into a signal processing device 8.
- signals are detected and evaluated.
- the signals are preferably sent at a sufficiently high sampling rate, e.g. 6000 samples / second, digitized.
- the excitation signals of the electrodes 3, 3a, 3b, 3c are preferably formed by multiplication of the associated current and the associated voltage signals.
- the output signals form the structure-borne sound signals. The following applies to the signals in the time domain:
- the transfer function H ( ⁇ ) is determined in the frequency domain:
- x ( ⁇ ) and y ( ⁇ ) are the Fourier transform of the excitation and output signals.
- H ( ⁇ ) is calculated via the cross power spectrum:
- W xy ( ⁇ ) denotes the cross power spectrum and W xx the power spectrum at the input, ie on the side of the excitation.
- the transfer function H ( ⁇ ) is determined only at discrete frequencies, the discrete frequencies being multiples (harmonic) of the fundamental frequency of the power supply of the electrodes 3, 3a, 3b, 3c, since the excitation occurs only via the fundamental and the harmonics of the coupled power , In the case of a power supply device 12 for the electric arc furnace operating, for example, at 50 Hz, the discrete frequencies are multiples of 100 Hz.
- the transfer function H ( ⁇ ) characterizes the medium in the electric arc furnace. Therefore, the change over time of the medium, eg the height of the foamed slag 15, can be determined by the change of the transfer function become. By means of the attenuation or the amplification of the transfer function values, a resulting value can be calculated, which correlates with the height of the foamed slag 15. This was confirmed in measurement experiments with a time resolution of about 1 to 2 seconds.
- the evaluation in the signal processing device 8 can be adjusted with the aid of empirical values from the operation of the electric arc furnace.
- the signal acquisition, evaluation and slag determination takes place online during operation, so that the status signal, which characterizes the slag height in the electric arc furnace, can be used for automatic process control.
- the inventively improved metrological knowledge of the foam slag process enables improved process control and regulation, which leads to the following advantages:
- the invention relates to a method for determining a state variable of an electric arc furnace, in particular for determining the height of the foamed slag 15 in an electric arc furnace, wherein the energy supply in the E- lektrolichtbogenofen with the aid of at least one electrical sensor 13a, 13b, 13c is determined and wherein structure-borne sound in the form is measured by vibrations at the electric arc furnace, wherein the at least one State variable, in particular the height of the foamed slag 15 by means of a transfer function is determined, which is determined by evaluation of the measured vibrations, ie the structure-borne sound, and by evaluation of measurement data of the at least one electrical sensor 13a, 13b, 13c.
- the state of the height of the foamed slag 15 is reliably detected and tracked in time.
- the height of the foamed slag 15 is decisive for the effectiveness of the energy input in the electric arc furnace.
- by covering the arc 18 by the foamed slag 15 losses are reduced by radiation.
- the improved measuring method enables reliable automatic control or regulation of the foam slag height.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005034379 | 2005-07-22 | ||
| DE102005034409A DE102005034409B3 (de) | 2005-07-22 | 2005-07-22 | Verfahren zur Bestimmung mindestens einer Zustandsgröße eines Elektrolichtbogenofens und Elektrolichtbogenofen |
| PCT/EP2006/064156 WO2007009924A1 (de) | 2005-07-22 | 2006-07-12 | Verfahren zur bestimmung mindestens einer zustandsgrösse eines elektrolichtbogenofens und elektrolichtbogenofen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1910763A1 true EP1910763A1 (de) | 2008-04-16 |
Family
ID=37022968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06764149A Withdrawn EP1910763A1 (de) | 2005-07-22 | 2006-07-12 | Verfahren zur bestimmung mindestens einer zustandsgrösse eines elektrolichtbogenofens und elektrolichtbogenofen |
Country Status (12)
| Country | Link |
|---|---|
| US (2) | US20080285615A1 (de) |
| EP (1) | EP1910763A1 (de) |
| JP (1) | JP2009503419A (de) |
| KR (2) | KR101176735B1 (de) |
| CN (1) | CN101228406B (de) |
| AR (1) | AR055992A1 (de) |
| BR (1) | BRPI0613414A8 (de) |
| CA (1) | CA2615929C (de) |
| MX (1) | MX2008000982A (de) |
| RU (1) | RU2415179C2 (de) |
| UA (1) | UA87068C2 (de) |
| WO (1) | WO2007009924A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2824408A1 (de) | 2013-07-12 | 2015-01-14 | Siemens Aktiengesellschaft | Verfahren zur Steuerung- oder Regelung eines Elektrolichtbogenofens |
Families Citing this family (44)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUD20070075A1 (it) * | 2007-04-26 | 2008-10-27 | Danieli Automation Spa | Procedimento di controllo dell'alimentazione della carica metallica per forni elettrici ad arco |
| DE102008006958A1 (de) | 2008-01-31 | 2009-08-06 | Siemens Aktiengesellschaft | Verfahren zum Betreiben eines Lichtbogenofens mit wenigstens einer Elektrode, Regel- und/oder Steuerungseinrichtung, Maschinenlesbarer Programmcode, Datenträger und Lichtbogenofen zur Durchführung des Verfahrns |
| DE102008006965A1 (de) | 2008-01-31 | 2009-08-06 | Siemens Aktiengesellschaft | Verfahren zur Ermittlung eines Strahlungsmaßes für eine thermische Strahlung, Lichtbogenofen, eine Signalverarbeitungseinrichtung sowie Programmcode und ein Speichermedium zur Durchführung des Verfahrens |
| DE102008006966A1 (de) | 2008-01-31 | 2009-08-06 | Siemens Aktiengesellschaft | Verfahren zur Ermittlung eines Stückigkeitsmaßes für Feststoff in einem Lichtbogenofen, einen Lichtbogenofen, eine Signalverarbeitungseinrichtung sowie Programmcode und ein Speichermedium |
| DE102008045054A1 (de) | 2008-08-26 | 2010-03-04 | Sms Siemag Aktiengesellschaft | Verfahren zur Schaumschlackensteuerung einer Rostfreischmelze in einem Elektrolichtbogenofen |
| DE102009034353A1 (de) * | 2008-12-15 | 2010-06-24 | Siemens Aktiengesellschaft | Schmelzofen |
| MX2011005635A (es) * | 2009-02-03 | 2011-06-24 | Siemens Ag | Procedimiento y dispositivo para regural la salida de monoxido de carbono de un horno de arco electrico. |
| IT1396173B1 (it) * | 2009-03-25 | 2012-11-16 | Tenova Spa | Apparecchiatura di misura della posizione degli elettrodi in un forno elettrico |
| DE102009053169A1 (de) * | 2009-09-28 | 2011-04-21 | Siemens Aktiengesellschaft | Verfahren zur Kontrolle eines Schmelzvorganges in einem Lichtbogenofen sowie Signalverarbeitungseinrichtung, Programmcode und Speichermedium zur Durchführung dieses Verfahrens |
| DE102009043639A1 (de) | 2009-09-29 | 2011-03-31 | Sms Siemag Aktiengesellschaft | Verfahren und Vorrichtung zur Steuerung der Erzeugung einer Schaumschlacke in einer metallischen Schmelze |
| DE102010025562A1 (de) * | 2010-02-18 | 2011-08-18 | SMS Siemag AG, 40237 | Injektorkühlblock zur Halterung mindestens eines Injektors |
| EP2362710A1 (de) * | 2010-02-23 | 2011-08-31 | Siemens Aktiengesellschaft | Verfahren zum Betrieb eines Lichtbogenofens, Steuer- und/oder Regeleinrichtung für einen Lichtbogenofen und Lichtbogenofen |
| RU2012142810A (ru) * | 2010-03-09 | 2014-04-20 | Сименс Акциенгезелльшафт | Способ регулирования консистенции шлака и устройство для исполнения способа |
| DE102010003845B4 (de) | 2010-04-12 | 2011-12-29 | Siemens Aktiengesellschaft | Verfahren zur Bestimmung eines Chargierzeitpunkts zum Chargieren, von Schmelzgut in einen Lichtbogenofen, Signalverarbeitungseinrichtung, maschinenlesbarer Programmcode, Speichermedien und Lichtbogenofen |
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- 2006-07-12 MX MX2008000982A patent/MX2008000982A/es active IP Right Grant
- 2006-07-12 CN CN200680026905XA patent/CN101228406B/zh not_active Expired - Fee Related
- 2006-07-12 BR BRPI0613414A patent/BRPI0613414A8/pt not_active Application Discontinuation
- 2006-07-12 US US11/996,020 patent/US20080285615A1/en not_active Abandoned
- 2006-07-12 KR KR1020107017205A patent/KR101176735B1/ko not_active Expired - Fee Related
- 2006-07-12 KR KR1020087001819A patent/KR20080022585A/ko not_active Ceased
- 2006-07-12 EP EP06764149A patent/EP1910763A1/de not_active Withdrawn
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- 2006-07-12 UA UAA200800783A patent/UA87068C2/uk unknown
- 2006-07-20 AR ARP060103113A patent/AR055992A1/es not_active Application Discontinuation
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2824408A1 (de) | 2013-07-12 | 2015-01-14 | Siemens Aktiengesellschaft | Verfahren zur Steuerung- oder Regelung eines Elektrolichtbogenofens |
| WO2015003832A1 (de) | 2013-07-12 | 2015-01-15 | Siemens Aktiengesellschaft | Verfahren zur steuerung oder regelung eines elektrolichtbogenofens |
Also Published As
| Publication number | Publication date |
|---|---|
| US9255303B2 (en) | 2016-02-09 |
| CA2615929A1 (en) | 2007-01-25 |
| BRPI0613414A8 (pt) | 2016-10-18 |
| RU2415179C2 (ru) | 2011-03-27 |
| KR20100092067A (ko) | 2010-08-19 |
| MX2008000982A (es) | 2008-03-27 |
| CN101228406B (zh) | 2011-01-26 |
| AR055992A1 (es) | 2007-09-12 |
| CN101228406A (zh) | 2008-07-23 |
| WO2007009924A1 (de) | 2007-01-25 |
| KR20080022585A (ko) | 2008-03-11 |
| RU2008106778A (ru) | 2009-08-27 |
| BRPI0613414A2 (pt) | 2011-01-11 |
| JP2009503419A (ja) | 2009-01-29 |
| KR101176735B1 (ko) | 2012-08-23 |
| US20080285615A1 (en) | 2008-11-20 |
| UA87068C2 (uk) | 2009-06-10 |
| US20100315098A1 (en) | 2010-12-16 |
| CA2615929C (en) | 2014-03-04 |
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