EP2310538A1 - Verfahren und vorrichtungen zur regelung der strömungsgeschwindigkeit und zum abbremsen von nichtferromagnetischen, elektrisch leitfähigen flüssigkeiten und schmelzen - Google Patents
Verfahren und vorrichtungen zur regelung der strömungsgeschwindigkeit und zum abbremsen von nichtferromagnetischen, elektrisch leitfähigen flüssigkeiten und schmelzenInfo
- Publication number
- EP2310538A1 EP2310538A1 EP09781564A EP09781564A EP2310538A1 EP 2310538 A1 EP2310538 A1 EP 2310538A1 EP 09781564 A EP09781564 A EP 09781564A EP 09781564 A EP09781564 A EP 09781564A EP 2310538 A1 EP2310538 A1 EP 2310538A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- melt stream
- melt
- magnetic field
- control device
- magnetic
- 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.)
- Granted
Links
Classifications
-
- 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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1509—Tapping equipment
- F27D3/1536—Devices for plugging tap holes, e.g. plugs stoppers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D39/00—Equipment for supplying molten metal in rations
- B22D39/003—Equipment for supplying molten metal in rations using electromagnetic field
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/12—Opening or sealing the tap holes
-
- 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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
- F27D3/1509—Tapping equipment
- F27D3/1518—Tapholes
-
- 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
- C21C5/4653—Tapholes; Opening or plugging thereof
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
- Y10T137/0391—Affecting flow by the addition of material or energy
Definitions
- the invention relates to methods and devices for controlling the flow rate and for braking non-ferromagnetic, electrically conductive liquids and melts by electric magnetic fields when flowing through a channel or tubular guide element, in particular during the tapping of metallurgical containers such as blast furnaces and furnaces
- DE 2 023 901 and DE 2 101 547 describe an electromagnetic valve or an electromagnetic pump which surrounds an obliquely upward directed bleed pipe connected to an outflow opening in the bottom region of a container for receiving a melt.
- the pump consists of one or more multiphase electromagnetic coils which generate in the melt stream flowing through the bleed tube a magnetic traveling field with a direction dependent on the phase sequence, which exerts a force on the melt stream in or against its flow direction for controlling the outflow velocity of the melt stream.
- an electromagnetic conveyor trough for the removal of liquid metal from a melting or holding furnace which has an obliquely rising channel body, which opens with its lower end in the oven.
- an inductor which is formed for example by the stator winding of a three-phase linear motor, arranged to generate an electromagnetic traveling field, which causes an open flow of liquid metal against the force of gravity in the channel body of the conveyor trough.
- melt streams work with electromagnetic Wanderfeidern generated by electric coil assemblies that enclose closed drainage channels formed, for example, as tubes and at Use of open troughs for the melt streams are arranged under the conveyor troughs.
- electromagnetic traveling fields To generate such electromagnetic traveling fields requires a complex arrangement of a plurality of electric coils over a greater length of the drainage channels or the conveyor troughs for the melt streams.
- DE 1 949 053 discloses an electromagnetic valve for influencing the flow velocity and the flow direction of a metal or metal alloy melt in a tubular groove.
- the mode of operation of the valve is based on the fact that an external electric current is conducted through the melt flow flowing through the channel and the Melt flow is simultaneously penetrated by an external magnetic field, such that on the in-trough and penetrated by the magnetic field portion of the melt stream, a force is exerted in or opposite to the flow direction of the melt stream.
- This electromagnetic metering valve is only intended for induction troughs in ring furnaces and discharge troughs of melting furnaces and ladles.
- Another disadvantage of this metering valve is that for the introduction of the electrical current in the melt stream electrodes are needed, which are in direct contact with the melt and thus subject to considerable wear.
- Electromagnetic coils as in a three-phase electric motor the melt flow in the taphole of the blast furnace is to be set in a rotary motion to separate according to the principle of a centrifuge pig iron and slag.
- a disadvantage of this solution is the mutual superposition of the normal flow rate and the rotational speed of the melt stream, so that the wear in the taphole channel by the increased velocity of the melt stream and by the force acting on the melt flow centrifugal force increases sharply. A slowing much less stopping the melt stream is not possible. 2.
- a force is to be exerted in the direction of the central axis of the taphole channel, such that in turn pig iron and slag are separated from each other and also inhibited the pig iron flow through the cross-sectional constriction due to the slag flow in the outer region of the needle hole channel through the cross-sectional constriction of the needle hole channel and slowed down.
- a disadvantage of this solution is in addition to the poor efficiency, the fact that substantially the outer layer of the molten iron slag stream in the taphole channel is affected by the alternating magnetic fields and a leadership of the magnetic lines in the inner layers of the melt slag mixture, in particular in the central region of the melt -Schlackstrom around the central axis of the needle hole channel is not or only weakly possible.
- DS 2 110 401 describes the continuous removal of pig iron from a blast furnace by means of an AC magnetic pump, which is arranged around a tubular drainage channel downstream of the branch channel.
- an AC magnetic pump With the magnetic pump, a magnetic traveling field is generated in the pig iron outflow channel, which moves axially linearly in one direction or in the opposite direction.
- a pulling effect is exerted on the molten pig iron in the spillway.
- the flow of the pig iron can be accelerated, throttled or shut off by means of the AC magnetic pump.
- Induction coils are guided concentrically around the drainage channel. Although this coil arrangement offers advantages in the promotion of electrically conductive media based on the resulting volume flow, but is unfavorable for the stopping of a melt stream, because inevitably the magnetic field strength and thus the resulting holding forces in the center of the drainage channel are weaker, that is, just there , where hydrodynamically the pressure of the melt stream is greatest.
- the invention has for its object to develop methods and apparatus for controlling the flow rate and braking a melt stream by magnetic fields, especially when tapping metallurgical containers such as blast furnaces and furnaces, which avoid the aforementioned disadvantages of known methods and devices for controlling the flow rate of melt streams and which make it possible to produce a braking effect by the action of magnetic force, which acts directly on a melt flow over its entire flow cross-section until the melt flow stops. It should be worked exclusively with induced eddy currents, so that the devices work completely contactless and wear-prone contacts for the introduction of electrical current can be avoided.
- This object is achieved by the method with the features of claim 1 and the method with the features of claim 4 and the control device with the features of claim 14 and the control device with the features of claim 32nd
- the first method according to the invention for regulating the flow velocity and for braking non-ferromagnetic, electrically conductive liquids and melts by electric magnetic fields when flowing through a channel-like or tubular guide element, in particular when tapping metallurgical containers such as blast furnaces and furnaces is characterized in that the diesstechnikss precipit. Melt flow in a closed duct!
- Direction of flow of the melt stream are directed, whereby locally different strong forces are generated by the interaction of magnetic field and eddy currents, which influence the flow velocity of the melt stream, and that the flow profile of the melt stream is equalized and slowed down with increasing magnetic field strength.
- the second method according to the invention for regulating the flow velocity and for braking non-ferromagnetic, electrically conductive liquids and melt streams by electric magnetic fields when flowing through a channel-like or tubular guide element, in particular when tapping metallurgical containers such as blast furnaces and furnaces based on the fact that the liquid or Melting current in a closed conducting element is passed through a stationary alternating magnetic field or through a multi-pole electromagnetic traveling field with alternating polarity such that the magnetic field lines transversely penetrate the melt stream over its entire cross section and a voltage is induced in the melt stream through which in the melt stream axial eddy currents are generated in the direction of the melt stream, and that by the interaction of magnetic field and alternating currents forces / eugl. which can reduce and accelerate the flow rate of the melt stream and stop the melt stream.
- the largest forces acting on the melt stream are produced.
- the frequency of the electromagnetic field and the traveling magnetic field as well as the electric current generating the magnetic fields can be changed and adapted to different circumstances.
- the magnetic flux in a closed magnetic circuit at the entrance of the melt flow into the magnetic field and at the exit of the melt stream from the magnetic field of the magnetic circuit counteracts the direction of flow of the melt stream on this decelerating. In this way, an additive effect on the melt flow is achieved.
- FIG. 1 is a perspective view of a control device with a magnetic field of constant polarity for controlling the flow velocity and for braking a melt stream
- Fig. 2a shows a longitudinal section through the guide tube of
- Fig. 2c shows a cross section of the guide tube of
- Fig. 2d shows a cross section of the guide tube of
- Fig. 2e is a longitudinal section of the guide tube of
- Fig. 2f a cross section of the guide tube of
- Fig. 3a shows a longitudinal section of the guide tube of
- Control device according to line A-A of FIG. 1 with the magnetic field of the control device
- 3b is a longitudinal section of the guide tube of
- Fig. 3c is a longitudinal section of the guide tube of
- Fig. 3d shows a longitudinal section of the guide tube of
- FIG. 6 is a schematic representation of a control device with a series connection of two magnetic fields of constant polarity
- Fig. 7a is a longitudinal section of the control device according to
- FIG. 7b shows the radial eddy current fields generated by the control device according to FIG. 6, FIG.
- FIG. 9 is a schematic diagram of an arranged on one pole of the magnetic core of a control device induction coil of superconducting material
- the FIGS. FIG. 10 shows the arrangement of the apparatus for controlling the flow velocity and for slowing down a melt stream in front of the outlet opening of the taphole channel of a blast furnace, which
- FIGS. 12a a slide for shutting off the outlet opening and 12b of the taphole channel of a blast furnace in the open and closed positions
- Fig. 13a shows a pivoting flap for shutting off the outlet opening 13b and 13b of the taphole channel in the open and closed positions
- FIGS. 18a the course of the resulting and l ⁇ b magnetic flux density of the electromagnetic
- the control device 1 according to FIG. 1 which is preferably used for tapping blast furnaces for regulating the flow velocity and for braking a melt stream 2 by a stationary electric magnetic field 3 with constant polarity, has a core 4 made of ferromagnetic material which acts as a yoke 5 two poles ⁇ , 7 is formed, which form a gap 8 for receiving a closed guide element 9 in the form of a tube 10 made of an electrically conductive material, for example copper, for passing the melt stream 2.
- the laminar melt stream 2 which flows in the direction of arrow a through the guide tube 10, has the velocity profile 11 shown in FIG. 2a.
- eddy currents 16, 17 flow radially to the flow direction a of the melt stream 2 in order to compensate for the electrical potential difference.
- eddy currents flow axially relative to the flow direction a of the melt stream 2, as will be explained below.
- the strength of the radial vortex flows 16, 17 is greatly increased by the electrically conductive material, in particular copper, of the guide tube 10 of the control device 1, since then the eddy currents in addition to the melt stream 2 additionally through the wall of the guide tube 10th flow. As a result, the braking effect on the melt stream 2 is amplified accordingly.
- the longitudinal section of the guide tube 10 of the control device 1 of Figure 3a according to the section line AA of Figure 1 shows the course of the transverse to the melt stream 2 and in the direction of the a melt stream flowing field lines 14 of the magnetic field 3, in and transverse to the flow direction a of the melt stream. 2 extends.
- the melt stream 2 enters the magnetic field 3 in the region 19 and leaves it again in the region 20.
- a voltage 21 shown in FIG. 3b is induced in the melt stream in a plane perpendicular to the magnetic field lines 14, through which, according to the rule of Lenz, eddy currents 22 according to FIG. 3 c compensate the potential difference in the melt stream 2 be generated.
- the eddy currents 22 flow axially to the flow direction a of the melt stream 2 to outside the range of the magnetic field third
- the thickness of the axial eddy currents 22, 24 is greatly increased by the electrically conductive material, in particular copper, of the guide tube 10 of the regulating device 1, since then the eddy currents, except through the Melt flow 2 additionally flow through the wall of the guide tube 10. As a result, the braking effect on the melt stream 2 is amplified accordingly.
- the guide tube 10 of the control device 1 which is made of electrically highly conductive material such as copper, is equipped with cooling channels 26 through which a cooling medium is passed in order to prevent the guide tube from being attacked by the liquid melt of the melt stream 2.
- melt layer 27 of the melt Sterras 2 is deposited on the inner wall 10a of the guide tube 10, which acts as a protective layer against wear of the guide tube 10.
- the melt layer is thinned by wear at any point, the increased melt cooling effect at this point due to the reduced tube wall thickness immediately causes localized solidification of the melt, with the result of rebuilding the protective layer at that location.
- wear of the inner wall 10 a of the guide tube 10 is prevented by the melt stream 2.
- the tapping operation of blast furnaces can be lengthened and the flow rate of the melt stream reduced in such a way that permanent tapping is possible, and ultimately the closure and reopening of the stitch holes can be waived.
- the gap between the guided in the guide tube 10 melt stream 2 and the ends of the two poles 6, 7 must be as small as possible.
- Stitch hole tamping machine and the drill bit and the boring bar for opening the taphole channel through the guide tube 10 in the gap 8 between the ends of the two poles 6, 7 of the magnetic core or the yoke 5 can be passed.
- FIG. 6 illustrates a control device 32 with a series connection of two electromagnetic fields 3, 3a of constant polarity, by means of which a central axial eddy current field 33 shown in FIG. 7a in longitudinal section along line BB of FIG. 6 is produced with a significantly increased current intensity, which is additionally represented by the in Figure 7b shown radial eddy current 34, 35 is amplified, so that a significant increase in the overall efficiency and the braking effect of the control device is achieved in a melt stream.
- a of the melt stream 2 is built between the two poles 6a, 7a, an alternating electromagnetic field 3b, by the on Poles 6a, 7a arranged, not shown, induction coils, which are operated with AC power is generated.
- induction coils which are operated with AC power is generated.
- eddy currents 37, 38 have been induced within the alternating magnetic field 3b, which generate Lorentz forces 39, 40 by interaction with the alternating magnetic field 3b, which act repulsively.
- control device 36 with an alternating magnetic field 3b according to FIG. 8 corresponds to the construction of the control device 1 with a magnetic field 3 of constant polarity according to FIG. 1.
- the induction coils can be made of superconducting material.
- a superconductor has the advantage that it conducts the electrical power without loss. As a result, very high current densities are possible in a small space, so that very strong magnetic fields can be generated with low energy consumption and space requirements as well as low costs.
- the induction coil 41 is arranged on a pole 7 of the pole pair 6, 7, from which the magnetic field lines 14 emerge, and is preferably made of a high-temperature superconducting material , which develops its superconducting properties in a more or less cooled state.
- the induction coil 41 is installed in a chamber 42 which consists of one or more layers of highly heat-insulating material 43.
- the induction coil 41 rests in the center of the chamber 42 in a cooling bath 44 of liquid gas, preferably nitrogen, which is kept at its boiling point by the evaporation cooling resulting from its evaporation, which must be below the critical temperature of the superconducting material of the induction coil 41. Since the evaporation of the liquid gas consumes over time, depending on the consumption of liquid must be replenished in the chamber.
- the superconducting induction coil is charged or discharged as required with electric current.
- the arrangement of the control device 28 for generating a force acting on a melt stream in the taphole 45 of a blast furnace 46 braking forces by means of electric magnetic fields of constant polarity as an attachment means in front of the outlet opening 47 of the taphole channel 45 with a connection of the taphole channel to the guide tube 10 of the control device 28 can be seen.
- a table 50 is movable, on which the control device 28 is arranged as a closed box 51 according to FIG 11.
- the box 51 of the control device 28 can be brought into a position in which the axis of the taphole 45 extends coaxially to the axis of the guide tube 10 of the control device 28 for the passage of the melt stream 2.
- the outlet opening 47 of the branch channel 45 and the inlet opening 53 of the guide tube 10 of the control device 28 for braking the melt stream 2 are first sealingly connected together and then the taphole 45 in the wall 54th the blast furnace 46 with a conventional drilling through the guide tube 10 of the control device 28 drilled through.
- the double efficiency 29 for guiding and guiding the magnetic flux which according to FIG. 5 through the four induction coils 12, 13, 30, 31, is improved in order to improve the overall efficiency is formed as a closed box 51 which encloses all components of the control device.
- the front of the box 51 is removed.
- the free space 55 of the induction coils 12, 13, 30, 31 and the guide tube 10 receiving closed box 51 is filled with fine-grained flowable material, preferably sand, to damage the two yokes 5, 5 a of Doppeljochs 29 and the induction coils 12, 13, 30, 31 to avoid even in the case when cracks in the guide tube 10 should arise in operational damage and thereby conditionally liquid iron or slag within the box 51 can escape.
- fine-grained flowable material preferably sand
- the leaked melt is collected and brought to solidification.
- a drain opening 56 in the bottom 57 of the box 51 the sand can be drained.
- FIGS. 12a and 12b show a mechanical slide 58 which, according to FIG. 10, is located between the outlet opening 47 of the taphole channel 45 of a blast furnace 46 and the inlet opening 53 of the guide tube 10 of the device 28 for regulating the flow velocity and braking the needle hole channel 45 Melting stream 2 is arranged.
- the slider 58 which consists of high temperature resistant material and is covered on its inside with refractory ceramic, is held and guided in lateral guides 59, 60 and locked by a stop 61 which engages over the slider 58 in the closed position. If the Schmelsestrom 2 is braked in the guide tube 10 by the action of the magnetic fields or almost braked, the slider 58 is closed. In this way, the emerging from the taphole 45 under the internal pressure of the blast furnace 46 melt stream 2 after the deceleration by the magnetic fields of
- Regulating device 28 are interrupted for a long time. If the melt retained in the taphole channel solidifies, it can be remelted by heaters, as described below with reference to FIG. 14, in order to initiate a new tapping.
- FIGS. 13 a and 13 b show a shut-off device for interrupting the melt stream 2, which serves as a pivoting flap 62 is formed, which is occupied on its the tap hole channel 45 side facing refractory material.
- the pivoting flap 62 is held in the closing position of stops 63 pivoted in front of the taphole channel 45.
- the slider 58 according to Figures 12a and 12b and the pivoting flap 62 according to Figures 13a and 13b can both between the outlet opening 47 of the taphole 45 and the inlet opening 53 of the guide tube 10 of the control device 28 for controlling the flow rate and for braking the melt stream 2 in Sti ⁇ hlochkanal 45 as well as in front of the outlet opening 64 of the guide tube 10 of the control device 28 are arranged.
- the tap hole channel 45 of the blast furnace 46 shown in Figure 14 is formed by an outer tube 65 and an inner tube 66 axially displaceable therein, wherein the outer tube 65 is fixedly connected to the lining 67 of the blast furnace 46.
- Both tubes 65, 66 are made of a high-strength, preferably ceramic material and the material of the inner tube 66, which serves to stop the Abrasionsverschl founded by the outflowing pig iron and the effluent melt is additionally resistant to abrasion.
- the inner tube 66 consists of tube sections 68, which are replaced to compensate for the Abrasionsverschl foundedes occurring at certain intervals by new pipe sections 68a, wherein the inner pipe sections 68a inserted through the outlet opening 47 of the tap hole 45 against the flow direction a of the melt stream 2 in the AuSenrohr 65 and at the same time worn pipe sections 68b are pushed out of the outer pipe 65 out of the outer pipe 65 into the blast furnace 46 through the inlet opening 69 of the taphole channel 45.
- Inner tube section 68b through which the melt stream 2 enters the taphole channel 45 of the blast furnace 46, protrudes by a certain amount to protect the outer tube 65 and the outer wall 61 of the blast furnace 46 against AbrasionsschleleiS in the blast furnace.
- This inner pipe section 68b assumes the function of the so-called mushroom on the inside of the lining of a blast furnace in the conventional tapping process.
- the time interval of the insertion of new pipe sections 68a is selected so that destruction of the inner pipe sections 68 is avoided and thereby contact of the slag or the melt with the outer pipe 65 is excluded.
- a lubricant 70 on a mineral basis, which unfolds its full lubricity at the high temperatures of the outflowing iron and the effluent slag.
- Outer tube 65 and inner tube 66 of the illustrated in Figure 15 tap hole 45 are equipped with a combined heating and cooling system, which consists of at least one attached to the outer tube 65 hollow coil 71 of electrically conductive material, preferably copper, wherein a coil 71 flowing through the coolant a solidification of the in the taphole 45 after braking a melt stream 2 by the magnetic fields of a control device 28 for braking the melt stream after a tap retained melt and to initiate a re-tapping the connected to a high-frequency alternating current with high currents coil 71 in the taphole channel 45 solidified melt produced large eddy currents to melt the melt.
- a combined heating and cooling system which consists of at least one attached to the outer tube 65 hollow coil 71 of electrically conductive material, preferably copper, wherein a coil 71 flowing through the coolant a solidification of the in the taphole 45 after braking a melt stream 2 by the magnetic fields of a control device 28 for braking the melt stream after a tap retained melt and to initiate
- the apparatus 72 of FIG. 16 for controlling the flow rate and decelerating a nonferromagnetic melt stream 2 to a standstill is characterized by a core 73 of a ferromagnetic eddy current damping material, preferably a transformer sheet, having a plurality of pole pairs 74 in series with a gap 75 Forming a formed as a tube 10 guide element for the melt stream 2, and on the pole pieces 76, 77 of the poles 78, 79 of the pole pairs 74 arranged induction coils 80, 81, with a three-phase current with a single use of the three phases Ll, L2, L3 for generating a bipolar electromagnetic traveling field with a maximum and a minimum of the field strength are fed.
- a core 73 of a ferromagnetic eddy current damping material preferably a transformer sheet
- a disadvantage of the control device according to FIG. 16 is that the amplitude of the field strength weakens during the migration from one pole pair to the next in the intermediate positions.
- the control device 72 in 17 with an increased number of pole pairs 74 and with repeated use of each phase L1, L2, L3 of the three-phase current for generating a multi-pole traveling magnetic field with the output of the magnetic flux density shown in FIGS. 18a and 18b, in which the previously described with reference to Figure 6 technique of eddy current gain with their double utilization is used.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
- Blast Furnaces (AREA)
- General Induction Heating (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Details (AREA)
- Furnace Charging Or Discharging (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008036799 | 2008-08-07 | ||
DE200910035241 DE102009035241B4 (de) | 2008-08-07 | 2009-07-29 | Verfahren und Vorrichtungen zur Regelung der Strömungsgeschwindigkeit und zum Abbremsen von nichtferromagnetischen, elektrisch leitfähigen Flüssigkeiten und Schmelzen |
PCT/EP2009/060216 WO2010015679A1 (de) | 2008-08-07 | 2009-08-06 | Verfahren und vorrichtungen zur regelung der strömungsgeschwindigkeit und zum abbremsen von nichtferromagnetischen, elektrisch leitfähigen flüssigkeiten und schmelzen |
Publications (2)
Publication Number | Publication Date |
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EP2310538A1 true EP2310538A1 (de) | 2011-04-20 |
EP2310538B1 EP2310538B1 (de) | 2013-03-06 |
Family
ID=41507951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20090781564 Not-in-force EP2310538B1 (de) | 2008-08-07 | 2009-08-06 | Verfahren und vorrichtungen zur regelung der strömungsgeschwindigkeit und zum abbremsen von nichtferromagnetischen, elektrisch leitfähigen flüssigkeiten und schmelzen |
Country Status (9)
Country | Link |
---|---|
US (1) | US8696976B2 (de) |
EP (1) | EP2310538B1 (de) |
JP (1) | JP2011529794A (de) |
CN (1) | CN102177257B (de) |
BR (1) | BRPI0917122A2 (de) |
DE (1) | DE102009035241B4 (de) |
RU (1) | RU2532213C2 (de) |
WO (1) | WO2010015679A1 (de) |
ZA (1) | ZA201100942B (de) |
Families Citing this family (14)
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US8343416B2 (en) * | 2008-08-07 | 2013-01-01 | Tmt Tapping-Measuring-Technology Gmbh | Methods and devices for regulating the flow rate and for slowing down non-ferromagnetic, electrically conductive liquids and melts |
US20100229955A1 (en) * | 2009-03-13 | 2010-09-16 | Douglas Bell | Increasing Fluidity of a Flowing Fluid |
WO2012033454A1 (en) * | 2010-09-10 | 2012-03-15 | Jernkontoret | Production of nano sized ferrite |
DE102013101962B3 (de) | 2013-02-27 | 2014-05-22 | Schuler Pressen Gmbh | Gießvorrichtung und Gießverfahren |
CN104317350A (zh) * | 2014-10-13 | 2015-01-28 | 上海大学 | 一种控制磁性液体流动的方法 |
JP6413959B2 (ja) * | 2015-07-08 | 2018-10-31 | トヨタ自動車株式会社 | 流体輸送装置 |
KR101931633B1 (ko) * | 2016-10-28 | 2018-12-21 | 울산과학기술원 | 회전자계형 유도전자펌프 |
CN108929929A (zh) * | 2017-05-23 | 2018-12-04 | 余凤彬 | 一种高炉钻铁口装置 |
DE102017005210B4 (de) | 2017-05-30 | 2020-10-08 | Technische Universität Ilmenau | Vorrichtung zur Ermittlung von Parametern einer elektrisch leitfähigen Substanz und dazugehöriges Verfahren |
CN109468750A (zh) * | 2018-10-15 | 2019-03-15 | 浙江理工大学 | 制备均质增强熔喷非织造材料的阶梯磁场装置及使用方法 |
CN109609713A (zh) * | 2019-01-21 | 2019-04-12 | 浙江华源通冶金科技有限公司 | 一种能够减少高炉出铁沟铁损的装置和方法 |
DE102019122000A1 (de) * | 2019-08-15 | 2021-02-18 | Ald Vacuum Technologies Gmbh | Verfahren und Vorrichtung zum Zerteilen einer elektrisch leitfähigen Flüssigkeit |
CN112311195B (zh) * | 2020-09-21 | 2021-11-23 | 江苏大学 | 一种具有轴向导叶的圆柱式线性感应电磁泵 |
CN112167501B (zh) * | 2020-09-30 | 2023-10-27 | 江南大学 | 一种连续流磁感应电场低温杀菌装置及方法 |
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2009
- 2009-07-29 DE DE200910035241 patent/DE102009035241B4/de not_active Expired - Fee Related
- 2009-08-06 CN CN200980139898.8A patent/CN102177257B/zh not_active Expired - Fee Related
- 2009-08-06 WO PCT/EP2009/060216 patent/WO2010015679A1/de active Application Filing
- 2009-08-06 JP JP2011521582A patent/JP2011529794A/ja active Pending
- 2009-08-06 BR BRPI0917122A patent/BRPI0917122A2/pt not_active IP Right Cessation
- 2009-08-06 RU RU2011106578/02A patent/RU2532213C2/ru not_active IP Right Cessation
- 2009-08-06 US US13/057,378 patent/US8696976B2/en not_active Expired - Fee Related
- 2009-08-06 EP EP20090781564 patent/EP2310538B1/de not_active Not-in-force
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2011
- 2011-02-04 ZA ZA2011/00942A patent/ZA201100942B/en unknown
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Title |
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See references of WO2010015679A1 * |
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BRPI0917122A2 (pt) | 2015-11-17 |
EP2310538B1 (de) | 2013-03-06 |
RU2011106578A (ru) | 2012-09-20 |
JP2011529794A (ja) | 2011-12-15 |
DE102009035241A1 (de) | 2010-04-15 |
WO2010015679A1 (de) | 2010-02-11 |
CN102177257B (zh) | 2014-07-02 |
US8696976B2 (en) | 2014-04-15 |
DE102009035241B4 (de) | 2014-06-12 |
CN102177257A (zh) | 2011-09-07 |
US20110168273A1 (en) | 2011-07-14 |
ZA201100942B (en) | 2013-07-31 |
RU2532213C2 (ru) | 2014-10-27 |
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