WO1998025718A1 - Induktor bei einem schmelzengefäss - Google Patents
Induktor bei einem schmelzengefäss Download PDFInfo
- Publication number
- WO1998025718A1 WO1998025718A1 PCT/DE1997/002784 DE9702784W WO9825718A1 WO 1998025718 A1 WO1998025718 A1 WO 1998025718A1 DE 9702784 W DE9702784 W DE 9702784W WO 9825718 A1 WO9825718 A1 WO 9825718A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- inductor
- areas
- melt
- inductor according
- electromagnetic field
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
- G08B13/2408—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using ferromagnetic tags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/60—Pouring-nozzles with heating or cooling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15316—Amorphous metallic alloys, e.g. glassy metals based on Co
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/42—Cooling of coils
Definitions
- the invention relates to an inductor for generating an electromagnetic alternating field, which is arranged at an outlet member of a melt vessel and through which a cooling fluid flows for cooling.
- GB 22 79 543 A describes a two-part inductor with separate electrical connections on the outlet member of a melt vessel. None is said about the cooling.
- the object of the invention is to construct an inductor of the type mentioned at the outset in such a way that it can be operated with different coolants in order to adapt to different cooling requirements.
- the inductor is provided with different areas with separate inlets and outlets for cooling fluid, it is possible to apply different cooling fluids to the different areas of the inductor simultaneously or in succession.
- the cooling in the individual areas can be adapted to the respective requirements there.
- a gas in particular air
- the danger zone is where the inductor is closest to the melt in the melt vessel because wear and / or cracking in the wall of the melt vessel may cause melt to reach the inductor.
- water or steam can be used for cooling.
- the cooling fluid that is most suitable for its cooling and the cooling of its surroundings can always be used for the respective area of the inductor.
- the different cooling fluids are preferably liquid gas, or dry ice, or water, or water vapor, or gas, or compressed air.
- gases for example compressed air and supercooled air or nitrogen or carbon dioxide or oxygen or the like, can also be used to adapt to a cooling capacity which is required in each case.
- the areas of the inductor can preferably be acted upon with different electrical frequencies and / or electrical powers depending on the purpose of the respective area.
- the figure shows an inductor in an outlet element designed as a tube-in-tube rotary closure at the bottom of a melt vessel.
- a tube-in-tube closure system (R) is built into a base (1) of a melt vessel, for example for a steel melt. It has a perforated brick (2) in which a stator (4) made of refractory ceramic material is fastened by means of a holding device (3). A rotor (6) made of refractory ceramic material is rotatably mounted in the stator (4), which has a melt inlet opening (5). There is a gap (7) between the stator (4) and the rotor (6).
- a melt outlet channel (8) is designed within the rotor (6).
- the melt outlet channel (8) thereof can be brought more or less or not to coincide with the inlet opening (5), as a result of which the melt outflow can be controlled or interrupted.
- the stator (4) is enclosed by a coil-shaped inductor (9), which is installed in the perforated brick (2) and rests on the stator (4) via insulation (10).
- the inductor (9) consists of a hollow chamber-shaped metal profile and is connected to an electrical frequency converter (1 1), the frequency and / or power of which is adjustable.
- the inductor (9) is divided into an upper region (12) and a lower region (13) with regard to its hollow chamber profile which serves to guide cooling fluid.
- the upper area (12) is closer to the melt (S) in the vessel. It is close to a danger zone (G), in which wear or cracking is to be feared during operation.
- the lower area (13) is further away from this.
- the upper region (12) has an inlet (14) and an outlet (15) for a cooling fluid.
- the lower area (13) has an inlet (16) and an outlet (17) for another cooling fluid.
- One feed (14) is fed by a first coolant source (18).
- the other feed (16) is fed by a second coolant source (19).
- the coolant for the upper region (12) is a gas, in particular compressed air.
- the cooling fluid for the lower region (13) is liquid gas, or dry ice, or water, or water vapor. Depending on the application, the cooling fluids are also interchangeable.
- the regions (12, 13) can be cooled independently of one another with regard to the type of cooling fluid and the cooling power from the first coolant source (18) or the second coolant source (19).
- Frequency converter or converter (20) connected by means of electrical connections (23, 24).
- the frequencies and / or powers of the converter or converter (11, 20) are adjustable.
- the upper region (12) in particular is used for inductive heating of the melt flowing through the outlet channel (8).
- the steel melt itself can couple to the alternating electromagnetic field of the inductor (9), or the rotor (6) and / or the stator (4) can couple to the alternating electromagnetic field, the melt then possibly being heated up by heat conduction or heat radiation.
- the cooling is done to protect the inductor from overheating and, if necessary, to dissipate heat from its surroundings.
- the lower region (13) can also be used for inductive heating of the
- melt flow channel (8) Use melt flow channel (8). Its cooling can be stronger than in the upper region (12) by appropriate selection of the cooling fluid and / or its throughput speed. Intensive cooling also allows heat to be dissipated from the surroundings (perforated brick).
- the lower region (13) can also serve as a reference coil or reference field for a temperature measurement of the melt flowing through the outlet channel (8) or for the detection of slag in the through channel (8). This requires an additional (receiver) coil (not shown).
- the lower region (13) is connected to a measuring device (not shown). Since the electrical properties, in particular the conductivity, of the melt are temperature-dependent, they influence the reference field of the lower region (13) differently depending on the temperature, which is detected and evaluated by the measuring device. The same applies to slag detection because slag has a different electrical conductivity than the melt.
- the cooling of area (13) can also be selected independently of the cooling in area (12).
- the lower region (13) can also be used to generate a directed electromagnetic field, which generates a force component in the melt that has penetrated into the gap (7), which counteracts the melt flow. This seals the gap (7). In this case, intensive cooling is favorable because high electrical powers are required to generate the power component.
- the inductor described can also be used for other spouts in the wall or in the bottom of a metallurgical vessel for casting liquid metals, in particular steel. However, it can also be used in devices for slag tapping in waste incineration plants, for example.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Computer Security & Cryptography (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Dispersion Chemistry (AREA)
- Furnace Details (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Discharge Heating (AREA)
- General Induction Heating (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97949973A EP0944448B1 (de) | 1996-12-11 | 1997-11-28 | Induktor bei einem schmelzengefäss |
DE59706455T DE59706455D1 (de) | 1996-12-11 | 1997-11-28 | Induktor bei einem schmelzengefäss |
AT97949973T ATE213440T1 (de) | 1996-12-11 | 1997-11-28 | Induktor bei einem schmelzengefäss |
US09/319,383 US6052403A (en) | 1996-12-11 | 1997-11-28 | Inductor in a fusion tank |
JP52607798A JP2001505487A (ja) | 1996-12-11 | 1997-11-28 | 溶融容器における誘導コイル |
DE19781390T DE19781390D2 (de) | 1996-12-11 | 1997-11-28 | Induktor bei einem Schmelzengefäss |
AU53093/98A AU5309398A (en) | 1996-12-11 | 1997-11-28 | Inductor in a fusion tank |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19651535.1 | 1996-12-11 | ||
DE19651535A DE19651535C1 (de) | 1996-12-11 | 1996-12-11 | Induktor bei einem Schmelzengefäß |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998025718A1 true WO1998025718A1 (de) | 1998-06-18 |
Family
ID=7814390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1997/002784 WO1998025718A1 (de) | 1996-12-11 | 1997-11-28 | Induktor bei einem schmelzengefäss |
Country Status (8)
Country | Link |
---|---|
US (1) | US6052403A (de) |
EP (1) | EP0944448B1 (de) |
JP (1) | JP2001505487A (de) |
KR (1) | KR20000057522A (de) |
AT (1) | ATE213440T1 (de) |
AU (1) | AU5309398A (de) |
DE (3) | DE19651535C1 (de) |
WO (1) | WO1998025718A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19819903C2 (de) * | 1998-05-05 | 2000-09-14 | Didier Werke Ag | Fluidgekühlte, elektrische Stromleitung |
DE10201355A1 (de) * | 2002-01-16 | 2003-07-31 | C G Aneziris | Unterstützte chemische und thermomechanische Eigenschaften von feuerfesten Schlüsselbauteilen und Auskleidungen unter Stromzuführung und/oder mit elektrischen und/oder elektrochemischen und/oder elektromagnetischen Wirkungsmechanismen |
JP4660343B2 (ja) * | 2004-11-24 | 2011-03-30 | 新日本製鐵株式会社 | 溶融金属の注入用ノズルの加熱装置 |
EP3326735B1 (de) * | 2016-11-29 | 2020-07-22 | Refractory Intellectual Property GmbH & Co. KG | Verfahren sowie eine einrichtung zum detektieren von grössen im ausguss eines metallurgischen gefässes |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2433582A1 (de) * | 1973-08-10 | 1975-02-27 | Grohe Armaturen Friedrich | Vorrichtung zur herstellung von gussteilen |
DE3439369A1 (de) * | 1984-10-27 | 1986-04-30 | AMP Angewandte Meßtechnik und Prozeßsteuerung GmbH, 5100 Aachen | Verfahren und vorrichtung zum detektieren von schlacke |
EP0300150A1 (de) * | 1987-07-10 | 1989-01-25 | Amepa Angewandte Messtechnik Und Prozessautomatisierung Gmbh | Vorrichtung zum Detektieren von in einem Fluss einer Metallschmelze mitfliessener Schlacke |
US4972899A (en) * | 1990-01-02 | 1990-11-27 | Olin Corporation | Method and apparatus for casting grain refined ingots |
DE19500012A1 (de) * | 1995-01-02 | 1996-07-04 | Didier Werke Ag | Regel- und Verschlußeinrichtung für ein metallurgisches Gefäß |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1681950A (en) * | 1923-07-13 | 1928-08-28 | Ajax Electrothermic Corp | Multiple-path water-cooled furnace |
US2277223A (en) * | 1941-04-26 | 1942-03-24 | Induction Heating Corp | Electric induction furnace |
US3014255A (en) * | 1957-11-15 | 1961-12-26 | Heraeus Gmbh W C | Method of operating vacuum induction furnace |
FR2518239B1 (fr) * | 1981-12-15 | 1986-06-27 | Air Liquide | Procede et dispositif de frittage de parois refractaires |
DE4125916A1 (de) * | 1991-08-05 | 1993-02-11 | Didier Werke Ag | Verfahren zum induktiven aufheizen von keramischen formteilen |
DE4320766C2 (de) * | 1993-06-23 | 2002-06-27 | Ald Vacuum Techn Ag | Vorrichtung zum Einschmelzen einer festen Schicht aus elektrisch leitfähigem Material |
DE4428297A1 (de) * | 1994-08-10 | 1996-02-15 | Didier Werke Ag | Feuerfeste Düse und Verfahren zum Vergießen einer Metallschmelze aus einem Gefäß |
DE19603317A1 (de) * | 1995-08-28 | 1997-03-06 | Didier Werke Ag | Verfahren zum Betreiben eines Induktors und Induktor zur Durchführung des Verfahrens |
JP2954896B2 (ja) * | 1997-01-09 | 1999-09-27 | 核燃料サイクル開発機構 | コールドクルーシブル誘導溶融炉からの溶融物抜き出し装置 |
-
1996
- 1996-12-11 DE DE19651535A patent/DE19651535C1/de not_active Expired - Fee Related
-
1997
- 1997-11-28 AT AT97949973T patent/ATE213440T1/de not_active IP Right Cessation
- 1997-11-28 DE DE19781390T patent/DE19781390D2/de not_active Ceased
- 1997-11-28 DE DE59706455T patent/DE59706455D1/de not_active Expired - Fee Related
- 1997-11-28 JP JP52607798A patent/JP2001505487A/ja active Pending
- 1997-11-28 EP EP97949973A patent/EP0944448B1/de not_active Expired - Lifetime
- 1997-11-28 AU AU53093/98A patent/AU5309398A/en not_active Abandoned
- 1997-11-28 US US09/319,383 patent/US6052403A/en not_active Expired - Fee Related
- 1997-11-28 KR KR1019990705228A patent/KR20000057522A/ko not_active Application Discontinuation
- 1997-11-28 WO PCT/DE1997/002784 patent/WO1998025718A1/de not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2433582A1 (de) * | 1973-08-10 | 1975-02-27 | Grohe Armaturen Friedrich | Vorrichtung zur herstellung von gussteilen |
DE3439369A1 (de) * | 1984-10-27 | 1986-04-30 | AMP Angewandte Meßtechnik und Prozeßsteuerung GmbH, 5100 Aachen | Verfahren und vorrichtung zum detektieren von schlacke |
EP0300150A1 (de) * | 1987-07-10 | 1989-01-25 | Amepa Angewandte Messtechnik Und Prozessautomatisierung Gmbh | Vorrichtung zum Detektieren von in einem Fluss einer Metallschmelze mitfliessener Schlacke |
US4972899A (en) * | 1990-01-02 | 1990-11-27 | Olin Corporation | Method and apparatus for casting grain refined ingots |
DE19500012A1 (de) * | 1995-01-02 | 1996-07-04 | Didier Werke Ag | Regel- und Verschlußeinrichtung für ein metallurgisches Gefäß |
Also Published As
Publication number | Publication date |
---|---|
JP2001505487A (ja) | 2001-04-24 |
US6052403A (en) | 2000-04-18 |
KR20000057522A (ko) | 2000-09-25 |
AU5309398A (en) | 1998-07-03 |
ATE213440T1 (de) | 2002-03-15 |
DE59706455D1 (de) | 2002-03-28 |
DE19651535C1 (de) | 1998-04-30 |
EP0944448B1 (de) | 2002-02-20 |
DE19781390D2 (de) | 1999-11-11 |
EP0944448A1 (de) | 1999-09-29 |
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