EP2289628A1 - Wirbelstrom-Magnetabscheider mit optimierter Interaktionszone und Bewegungsbahn der Teilchen - Google Patents

Wirbelstrom-Magnetabscheider mit optimierter Interaktionszone und Bewegungsbahn der Teilchen Download PDF

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Publication number
EP2289628A1
EP2289628A1 EP09168815A EP09168815A EP2289628A1 EP 2289628 A1 EP2289628 A1 EP 2289628A1 EP 09168815 A EP09168815 A EP 09168815A EP 09168815 A EP09168815 A EP 09168815A EP 2289628 A1 EP2289628 A1 EP 2289628A1
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EP
European Patent Office
Prior art keywords
magnetic
wheel
belt
particles
wall
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Granted
Application number
EP09168815A
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English (en)
French (fr)
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EP2289628B1 (de
Inventor
Lotfi Bidani
Alain Puthier
Joël Ponzoni
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Lux Magnet
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Lux Magnet
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Publication date
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Priority to EP13169491.1A priority Critical patent/EP2644277A3/de
Priority to EP20090168815 priority patent/EP2289628B1/de
Publication of EP2289628A1 publication Critical patent/EP2289628A1/de
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Publication of EP2289628B1 publication Critical patent/EP2289628B1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/23—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp
    • B03C1/24—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp with material carried by travelling fields
    • B03C1/247—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp with material carried by travelling fields obtained by a rotating magnetic drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/025—High gradient magnetic separators
    • B03C1/031—Component parts; Auxiliary operations
    • B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
    • B03C1/0332—Component parts; Auxiliary operations characterised by the magnetic circuit using permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/16—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts
    • B03C1/18—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts with magnets moving during operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/20—Magnetic separation whereby the particles to be separated are in solid form

Definitions

  • the invention relates to a magnetic separator for particles and pieces of non-ferrous metals. More particularly to a magnetic separator using the principle of eddy currents.
  • an eddy current magnetic separator which typically comprises a magnetic wheel disposed under a solid bulk material conveyor belt or belt, at a location corresponding to a change of direction of the web, typically at the transition from horizontal to vertical.
  • the magnetic wheel or polar wheel typically comprises a series of permanent magnets or sometimes electromagnets which are arranged radially and successively along the circumference of the wheel.
  • the magnets are oriented so that the magnetic fields generated successively along the circumference are oriented radially and direction successively reversed. In this way a particle of non-ferrous metal, that is to say a paramagnetic material, located near the magnetic wheel will be subjected to a variable magnetic field.
  • This variable magnetic field will generate electromotive forces that will induce currents in the conductive material of the particles. These currents will create a magnetic field which opposes the magnetic field generated by the magnetic wheel which is the cause of the variation of the field outside. As a result, a repulsive force is applied to the particles which cause them to peel off the conveyor belt, which allows separation of these particles.
  • the document EP 0 439 983 A discloses a magnetic separator comprising a closed belt guided by three wheels.
  • a first wheel provides a change of direction to 180 ° of the belt
  • a second wheel operates a change of direction of the order of 40 ° -45 °
  • a third wheel operates a change of direction of the order of 135-140 ° by returning the belt to the first wheel.
  • a magnetic wheel is housed in the second wheel.
  • the magnetic wheel rotates in the same direction as the guide wheel but at a substantially higher speed. It generates a variable magnetic field at the outer surface of the belt on a sector of the second wheel corresponding to the contact area of the belt with the wheel in question.
  • This construction has various disadvantages.
  • the interaction zone between the variable magnetic field generated by the magnetic wheel is limited to the aforementioned sector, which has the effect of limiting the maximum speed of movement of the belt.
  • Some particularly fine particles or agglomerated with other non-metallic sometimes require the application of the variable magnetic field for a longer duration than other particles in order to be separated.
  • the document EP 0 388 626 A 1 discloses a similar device where the belt is deflected by about 90 ° at the point of separation.
  • a box is provided with a curved wall serving as support by sliding the belt.
  • a magnetic wheel is housed in the box under the wall so as to generate a variable magnetic field particles carried by the belt and approaching the wheel magnetic.
  • This document provides a wall of weakly conductive material so as to reduce the decrease of the magnetic field with the distance of the magnetic wheel in a radial direction.
  • This document further provides the presence of a material element having good magnetic properties and poor conductivity. This element is disposed facing the outer surface of the curved wall on a direction corresponding to a radius of the magnetic wheel inclined at 45 °.
  • This element The role of this element is to concentrate the magnetic field lines and thus the repulsion forces to a smaller magnetic wheel sector. This measurement is intended to increase the repulsion forces in a smaller interaction zone and thereby to better control the expulsion trajectories.
  • This device is however not well suited to the separation of certain agglomerated particles with other non-metallic particles. In addition, the speed of travel of the belt is quite limited.
  • the document JP 57 117353 A discloses a magnetic separator with a chute feeding the bulk material onto the top of a conveyor belt disposed substantially vertically.
  • the upper guide wheel incorporates a magnetic wheel having the effect of generating repulsive forces for separating non-magnetic metal particles to the left of the magnetic wheel.
  • a second magnetic wheel is arranged facing the outer surface of the conveyor belt. This second magnetic wheel rotates in a reverse direction of rotation to that of the first magnetic wheel.
  • a rotating wheel surrounds the second magnetic wheel. It rotates in a direction such that its outer surface near the conveyor belt moves parallel to said belt promoting the flow of magnetic and inert materials to the right. Its role is to protect the second magnetic wheel by preventing the accumulation of magnetic particles on the circumference of the latter. In case of intrusion of particles of any kind whatsoever between the second magnetic wheel and the wheel surrounding it, the fact that these two wheels rotate in opposite directions will cause abrasion damage to the wheels, which will lead to Difficulties of maintenance and stop of the installation.
  • the document US 5,080,234 illustrates a separation system involving two magnetic wheels interconnected by a toothed belt transmission ensuring a synchronization such that the magnetic poles of the wheels vis-à-vis remain opposed.
  • the second magnetic wheel is disposed above the outer surface of the conveyor belt.
  • it does not provide any protection so that the magnetic particles can be attracted to it and accumulate there which can lead to problems of reduction of the magnetic field produced and also, in more extreme cases, obstruction of the passage of the magnetic field. the bulk material in the air gap of the two wheels.
  • the object of this invention is to provide a magnetic separator for better separation of particles and / or non-magnetic metal pieces, especially when these particles are agglomerated with other particles or pieces of other nature.
  • the invention consists of a magnetic separator of particles and / or pieces of non-ferrous metals comprising: a wall forming a convex and rounded outer surface, said surface being a bearing and sliding surface of a first particle conveyor belt; and / or pieces comprising particles and / or pieces of non-ferrous metals to be separated; a first magnetic wheel disposed facing the inner surface of the wall, said wheel having a circumference and an axis of rotation, said wheel generating, in rotation, variable magnetic fields in the particles and pieces of non-ferrous metals, these variable magnetic fields inducing eddy currents and interaction forces with the magnetic fields generated by said route leading to eject particles and / or pieces of said belt for separation; wherein the wall is such that it circumvents the first magnetic wheel about one quarter of the circumference of said wheel at an approximately constant distance.
  • This configuration of the wall provides an optimized working area over a sector of about 90 ° and hence an increased separation rate.
  • the distance between the circumference of the first magnetic wheel and the inner surface of the wall is less than or equal to 10%, preferably 5%, of the outer diameter of said wheel on approximately a quarter of its diameter. circumference.
  • the wall is intended to guide the first conveyor belt from a generally horizontal direction to a generally vertical direction.
  • the wall describes a quarter circle approximately centered on the axis of rotation of the first magnetic wheel.
  • the separator comprises a box to which the wall and the first magnetic wheel are fixed.
  • the separator comprises means for guiding the belt downstream of the wall to a section where the belt has its outer surface generally facing downwards, and means, preferably of the magnet type. permanent, generating a magnetic field in proximity and along said belt section so as to be able to maintain ferromagnetic particles on said belt section in order to be able to separate them from particles and / or inert pieces, said means being preferentially disposed to inside the box specially designed for this purpose.
  • the means in question generate a constant magnetic field near and along the inner face of the belt along the aforementioned section.
  • These means may be arranged close to the inner face of the belt, in particular outside the box, for example on an independent frame.
  • These means may comprise windings or coils and / or permanent magnets.
  • the separator comprises a movable element with respect to the first magnetic wheel and comprising at least one magnetic field source directed towards the magnetic wheel, the mobile element acting as a magnetic brake when brings it closer to the circumference of said wheel.
  • the first magnetic wheel comprises a plurality of magnetic field sources distributed along the circumference so as to generate a variable magnetic field for a fixed observer near said wheel when it is rotating
  • the separator comprises a movable element relative to said wheel and comprising at least two magnetic field sources distributed along the circumference of said wheel, the magnetic field sources generating magnetic fields directed towards the circumference of said wheel, the movable member acting as magnetic brake for said wheel when brought closer to the circumference of said wheel.
  • the magnetic field sources of the first magnetic wheel and / or the magnetic brake consist of permanent magnets or electromagnets.
  • the separator comprises a second magnetic wheel disposed facing the outer surface of the wall and intended to rotate in a direction opposite to that of the first magnetic wheel, the rotating magnetic field of the second wheel acting on particles and / or pieces of non-ferrous metals and influencing the ejection path of these particles and pieces.
  • the second magnetic wheel is rotated by the first wheel only by interaction of the magnetic fields of the respective wheels.
  • a second closed belt is arranged around the second magnetic wheel and around guide means arranged in front of the second magnetic wheel with respect to the direction of advance of the first belt at the beginning of the wall so as to form a section of the second belt facing the outer surface of the wall.
  • a wheel is disposed between the second belt and the second magnetic wheel so as to allow a rotation speed of the second magnetic wheel different from the speed of the second belt.
  • the portion of the second belt facing the outer surface of the wall is generally parallel to the direction of movement of the first belt at the beginning of the wall.
  • the second wheel is arranged so that its axis of rotation is located in front of a plane passing through the axis of rotation of the first magnetic wheel and the beginning of the profile. quarter circle of the wall, and that with respect to the direction of advance of the first belt at the beginning of the wall.
  • the assembly formed by the second belt, the second magnetic wheel and the guide means of said belt is movable so as to be able to finely adjust the ejection trajectory of the particles and pieces of non-ferrous metals.
  • a main belt or conveyor belt 2 is intended to convey crushed bulk material or at least consist of pieces or particles of different kinds which it is necessary to sort.
  • the belt is of the closed type rotating around several wheels or guide rollers. It is guided by a substantially horizontal sliding surface 14, a support roller 12, a rounded slideway 19 describing a change of direction of the order of 90 °, a first return roller 6, a second return roller 8 and a driving roller 10.
  • the belt is driven counterclockwise, i.e. in a direction from the driving roller 10 to the rounded slide 19.
  • the traveling speed is typically of the order of 1 to 1.5 m / sec.
  • the material to be sorted is poured onto the belt 2 on its horizontal part supported by the slide 14.
  • the material consists of non-ferrous metal particles or pieces 16 represented by small squares and particles or pieces of other materials 18, typically nonmetallic material and inert and therefore completely insensitive to magnetic fields. These particles or pieces of other materials are represented by small circles.
  • the belt is supported by a wall slide 19 comprising a straight section 20 essentially aligned with the slide 14, a rounded section 13 substantially in a quarter circle and a section 21 substantially vertical and perpendicular to the section 20.
  • the slide 19 is part of a box 4 enclosing a magnetic wheel 22 disposed near the inner surface of the rounded section 13 of the slide 19.
  • the rounded portion 13 describes a quarter circle centered on the axis 15 and the wheel Magnetic is also centered on this axis.
  • the distance between the outer surface of the magnetic wheel and the inner surface of the radially-measured wall 13 is substantially constant.
  • the magnetic wheel is equipped with a series of permanent magnets.
  • the magnets are arranged to present their south and north poles successively towards the circumference of the wheel so as to generate a variable magnetic field for an observer located near the circumference of the wheel when it rotates. Only four permanent magnets are shown, each being shifted by 90 ° compared to the previous one, for simplicity of presentation. Indeed, in practice it is desirable to have more permanent magnets in order to increase the inversion frequency of the magnetic field generated for a rotation speed of the given wheel. In addition, only the north and south poles, respectively, directed towards the circumference of the wheel are illustrated in the figure, also for reasons of simplicity of presentation.
  • the rotation of the wheel is in a direction such that its outer surface near the wall 13 moves in the same direction as the belt 2.
  • the variable magnetic field will thus generate electromotive forces in the non-magnetic particles that will induce currents that will themselves give rise to magnetic fields opposing the variable magnetic field of the wheel magnetic.
  • the direction of rotation of the magnetic wheel is such that the variable magnetic field it generates moves forward with respect to the direction of travel of the strip upstream of the wall 13, and ejects the particles and pieces along a path generally parabolic to a tank 36 for recovering nonferrous metallic materials. As a reminder, these particles and pieces are represented by small squares in the figure.
  • a scraper 17 is provided at the level of the belt strand between the first and second return rollers 6 and 8. It serves to loosen the residues that would remain stuck to the belt after it has made a change of direction such that its surface outside is directed at least partially downwards.
  • the recovery tank 38 may be provided sufficiently large and positioned to recover these residues. Alternatively, a specific recovery tank (not shown) can be provided.
  • the position of the magnetic wheel 22 can be adjusted relative to the casing 4 and hence the wall 13.
  • This adjustment possibility is illustrated by the arrows at the axis of rotation 15 of the wheel. It allows a precise adjustment of the distance between the circumference of the wheel and the inner surface of the wall 13. Indeed, the wall 13 is a wear part, it may be necessary to replace it.
  • An adjustment of the position of the magnetic wheel may thus be useful in order to compensate for any manufacturing tolerances of the wall 13 while maintaining a minimum radial distance between the circumference of the wheel and the inner surface of the wall. This distance is of the order of a few percent of the diameter of the wheel, generally less than 10%, preferably less than 5% of the diameter.
  • a magnetic brake 24 is provided in the casing 4. It consists of an elongated element 26 having a curvature similar to that of the circumference of the magnetic wheel 22.
  • This element 26 comprises several permanent magnets arranged successively along the element so as to present each one of its poles towards the circumference of the magnetic wheel 22, these poles directed towards the circumference being alternately of the north-south or south-north type so that each cooperates with an opposite pole of the magnetic wheel when the magnetic brake 24 is moved radially towards the magnetic wheel. It follows that the respective magnets of the magnetic wheel moving in front of the magnets of the magnetic brake will be attracted by those having an opposite pole and repulsed by those having an identical pole. When the brake of the magnetic wheel is approached, the respective poles at the circumference of the magnetic wheel will each be repelled by an identical pole of the brake or attracted by an opposite pole.
  • the magnetic brake described above is applicable to any magnetic magnetic separator wheel.
  • a second magnetic wheel 33 is provided approximately above the main magnetic wheel 22. It is housed in a wheel 32 serving as a drum or guide roller of a second belt 28.
  • This second belt 28 is of the closed type and constitutes a surface protecting the magnetic wheel 33 and guiding the ejection area of the particles and pieces.
  • the belt 28 is guided by a wheel 30 disposed at the front of the wheel 32 with respect to the running direction of the conveyor belt 2 just before the wall 13.
  • wheel 32 serving as a drum or guide roller could be replaced by a fixed box with a slide for the belt, similar to the main box 4.
  • the second magnetic wheel 33 is arranged so that its axis of rotation is slightly offset forwardly relative to a plane passing through the axis of rotation of the main magnetic wheel 15 and the front edge of the rounded wall 13.
  • This plane corresponds to a vertical plane in the case of the figure but it should be noted that this plane could, for example, be inclined to the right if the cross section of the belt 2 upstream of the separation zone was inclined towards the high in the direction of scrolling.
  • Such a configuration is quite possible as long as the angle of inclination remains reasonable in order to be able to convey the ground or bulk material with the conveyor belt.
  • the assembly constituted by the second magnetic wheel 33, its drum 32, its deflection wheel 30 and the belt 28 can be moved for adjustment purposes in a longitudinal direction, that is to say a horizontal direction in the case of the figure.
  • This movement is illustrated by the double arrow on the axis 34.
  • the whole in The question may also be adjusted by a slight inclination with respect to an axis substantially corresponding to the axis of rotation of the drum 32.
  • This movement is illustrated by the double curved arrow on the left of the figure.
  • the second magnetic wheel rotates in the opposite direction to the main magnetic wheel so that the magnetic field it produces in the ejection zone moves forward with respect to the running direction of the conveyor belt 2. upstream of the separation zone.
  • the variable magnetic field generated by the second magnetic wheel 33 adds to the variable magnetic field generated by the main magnetic wheel. This results in an increase in the electromotive forces and currents induced in the non-magnetic metal particles and therefore the forces subjected to the larger particles.
  • the sum of the forces exerted by the two magnetic wheels on the particles is generally directed forward, which ensures a more frank ejection from the quarter-circle working area.
  • the offset of the additional magnetic wheel towards the front promotes the take-off of the belt particles capable of being ejected from their arrival at the beginning of the working area, that is to say near the junction between the rounded wall 13 and the upstream right wall or slide 20.
  • the effect of the additional wheel is still small, which prevents the particles from being subjected to excessive downward forces which would counteract those exerted by the main wheel.
  • the particles once ejected from the beginning of the working area approach, by the beginning of their trajectories, the area of influence of the additional wheel to be then accelerated by the forces exerted by the additional wheel.
  • the belt 28 is a wall adapted to rebound itself on certain particles whose ejection paths are such that they meet the belt 28.
  • this belt prevents the accumulation on the circumference of the second wheel magnetic wheel 33 of certain magnetic particles that would still be present in the flow of material carried by the conveyor belt 2. Indeed, the belt 28 assures a takeoff of particles potentially attracted by the magnets of the wheel 28.
  • the second magnetic wheel is magnetically driven by the main wheel without the presence of mechanical transmission means between the two.
  • Wheel main is rotated by an electric motor (not shown) and the magnetic coupling between the respective poles of the two wheels which are vis-à-vis ensures a drive of the additional magnetic wheel 33.
  • the torque to to transmit is rather weak considering that this wheel turns freely without causing other elements.
  • a slip has a link at the magnetic coupling. After a certain time, the eventual slip will cancel out so that the additional wheel 33 rotates at a circumferential speed close to that of the main wheel 22.
  • the pitch or the distance between the permanent magnets at the circumference of the additional wheel 33 is equal or at least close to the pitch of the main wheel to ensure a satisfactory coupling.
  • the additional wheel 33 is identical to the main wheel 22. It may, however, be of difference size while observing a pitch of magnet distributions close to that of the main wheel.
  • the second closed belt device disposed opposite the separation zone, the second belt surrounding an additional magnetic wheel is applicable to any magnetic separation unit comprising a magnetic wheel disposed under a conveyor belt of crushed or loose material.
  • This device can be applied to a magnetic separation unit without the quarter-circle slide for the conveyor belt, such as a unit where the conveyor belt is deflected by a roller including a magnetic wheel.
  • main magnetic wheel 22 as well as the additional magnetic wheel 33 can be constructed differently than with permanent magnets. Indeed, it is quite possible to provide electromagnets powered electrically to generate a magnetic field of power and distribution comparable to that generated by permanent magnets. Such a construction is, however, more complex in particular because of the need to provide rotating electrical contacts and windings at the wheel and a corresponding connection.
  • the figure 2 illustrates a magnetic separator similar to that of the figure 1 with the difference that it has two additional separation functions.
  • the box 104 differs from the box 4 of the figure 1 in this it comprises a rounded bottom wall 107 extending along the return portion of the belt.
  • This wall is equipped with a series of permanent magnets 105 which are dimensioned and arranged to generate a magnetic field at the belt section vis-à-vis the magnets.
  • the first additional separation function concerns the ferrous particles that would have escaped the prior separation by means of a permanent magnet conventionally arranged above the strip. It is therefore essentially small particles that are more difficult to separate due to the low mass / area ratio. These particles are represented by the triangles 142. These particles, due to their high magnetic permeability, are insensitive to the variable magnetic fields generated by the rotation of the wheel 22. They are therefore driven by the belt until they reach the recovery tank 38. particles and inert pieces 18.
  • the ferromagnetic particles 142 are then pressed against the band by the fixed magnetic fields emitted by the permanent magnets 105 and then recovered to a third tray 140 by gravity as soon as they are no longer subject to the magnetic field
  • the second additional function of separation concerns inert plugging particles 118 which are of a nature quite similar to inert particles 18 but which have the particularity of being sticky and, therefore, have the drawback of not falling into the main recovery tank 38 inert elements.
  • a scraper 117 is provided downstream of the permanent magnets 105 so as to loosen these inert particles from the band and recover them in a specific tank 138, once the particles and non-ferrous metal pieces, inert and ferrous separated in the respective trays 36, 38 and 140.
  • the figure 3 illustrates a magnetic separator similar to that of the figure 2 where, however, the first additional function, namely that of separating the ferrous particles that would have escaped the prior separation by means of a permanent magnet conventionally disposed above the band, is provided by an alternative configuration.
  • the lower part of the box 1104 enclosing the magnetic wheel 22 is adapted to allow the placement of permanent magnets 1105 along the inner face of the strip on the vertical or near vertical section after the change of direction operated around the wheel 22.
  • the particles 142 are pressed against the band by the fixed magnetic fields emitted by the permanent magnets 1105 and are driven by the band until the cessation of the magnetic field. They are recovered to a third tank 140 by gravity as soon as they are no longer subject to the magnetic field of the magnets 105.
  • the generation of the constant magnetic field by the permanent magnets 105 and 1105 in the examples of the figures 2 and 3 can be provided, alternately or in addition, by windings or coils traversed by a current.
EP20090168815 2009-08-27 2009-08-27 Wirbelstrom-Magnetabscheider mit optimierter Interaktionszone und Bewegungsbahn der Teilchen Active EP2289628B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13169491.1A EP2644277A3 (de) 2009-08-27 2009-08-27 Wirbelstrom-Magnetabscheider mit optimierter Interaktionszone und Bewegungsbahn der Teilchen
EP20090168815 EP2289628B1 (de) 2009-08-27 2009-08-27 Wirbelstrom-Magnetabscheider mit optimierter Interaktionszone und Bewegungsbahn der Teilchen

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EP20090168815 EP2289628B1 (de) 2009-08-27 2009-08-27 Wirbelstrom-Magnetabscheider mit optimierter Interaktionszone und Bewegungsbahn der Teilchen

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EP13169491.1A Division EP2644277A3 (de) 2009-08-27 2009-08-27 Wirbelstrom-Magnetabscheider mit optimierter Interaktionszone und Bewegungsbahn der Teilchen

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EP2289628B1 EP2289628B1 (de) 2014-06-18

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WO2013153296A1 (fr) * 2012-04-12 2013-10-17 Magpro Séparateur par courant de foucault
WO2013167591A1 (de) 2012-05-10 2013-11-14 Hochschule Rapperswil Wirbelstromabscheider
CN104888955A (zh) * 2015-06-17 2015-09-09 苏州嘉诺环保科技有限公司 一种高频涡流有色金属分选机
CN105797846A (zh) * 2016-04-15 2016-07-27 中山大学 一种分离破碎电子废弃物小尺寸有色金属的涡流分选机
EP3260203A1 (de) * 2016-06-21 2017-12-27 Sebastian Anton Schley Vorrichtung zur trennung von partikeln unterschiedlicher elektrischer leitfähigkeit in einem inhomogenen sortiergut
FR3058330A1 (fr) * 2016-11-10 2018-05-11 Alfyma Industrie Dispositif optimise de separation de produits
CN108789174A (zh) * 2018-06-04 2018-11-13 金华职业技术学院 一种用于钢棒磨粒流的流体精密分离装置
WO2020014105A1 (en) * 2018-07-09 2020-01-16 Novelis Inc. Systems and methods for improving the stability of non-ferrous metals on a conveyor
CN113182070A (zh) * 2021-05-13 2021-07-30 盐城工学院 一种新型干式风磁联合磁选机
EP3814025B1 (de) * 2018-07-09 2023-02-22 Novelis, Inc. Vorrichtung und verfahren zum sortieren von material auf einem förderband

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US9802205B2 (en) 2014-05-16 2017-10-31 Ford Global Technologies, Llc Particle separation system

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EP0106675A2 (de) * 1982-10-13 1984-04-25 Edward L. Bateman Limited Magnetische Abscheidung
EP0342330A2 (de) * 1988-05-19 1989-11-23 Lindemann Maschinenfabrik GmbH Vorrichtung zum Abtrennen von nichtmagnetisierbaren Metallen aus einer Feststoffmischung
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DE4031585A1 (de) * 1990-10-05 1992-04-09 Lindemann Maschfab Gmbh Vorrichtung zum abtrennen von nichtmagnetisierbaren stoffen aus einem gemisch
FR2671291A1 (fr) * 1991-01-04 1992-07-10 Andrin Fils Ets G Separateur magnetique pour particules en metal non ferreux.
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US2748940A (en) * 1953-09-18 1956-06-05 Roth Erwin Magnetic separator
JPS57117353A (en) 1981-01-16 1982-07-21 Hitachi Metals Ltd Separating device for non-magnetic metal
EP0106675A2 (de) * 1982-10-13 1984-04-25 Edward L. Bateman Limited Magnetische Abscheidung
EP0342330A2 (de) * 1988-05-19 1989-11-23 Lindemann Maschinenfabrik GmbH Vorrichtung zum Abtrennen von nichtmagnetisierbaren Metallen aus einer Feststoffmischung
EP0388626A1 (de) 1989-03-01 1990-09-26 Lindemann Maschinenfabrik GmbH Vorrichtung zum Abtrennen von nichtmagnetisierbaren Metallen aus einer Feststoffmischung
US5057210A (en) * 1989-03-01 1991-10-15 Lindemann Maschinenfabrik Gmbh Apparatus for separating non-magnetizable metals from a solid mixture
JPH0368463A (ja) * 1989-08-08 1991-03-25 Mitsubishi Seiko Jizai Kk 回転式ドラム型非磁性金属分離装置
EP0439983A2 (de) 1990-01-29 1991-08-07 ETS G. ANDRIN ET FILS (Société Anonyme) Magnetscheider für Nichteisenmetall-Teilchen oder -Stücke
US5080234A (en) 1990-08-15 1992-01-14 Walker Magnetics Group, Inc. Eddy current separator
DE4031585A1 (de) * 1990-10-05 1992-04-09 Lindemann Maschfab Gmbh Vorrichtung zum abtrennen von nichtmagnetisierbaren stoffen aus einem gemisch
FR2671291A1 (fr) * 1991-01-04 1992-07-10 Andrin Fils Ets G Separateur magnetique pour particules en metal non ferreux.
DE19838170A1 (de) * 1998-08-21 2000-03-02 Meier Staude Robert Verfahren und Vorrichtung zur Wirbelstromscheidung von Materialgemischen in Teilchenform

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WO2013153296A1 (fr) * 2012-04-12 2013-10-17 Magpro Séparateur par courant de foucault
FR2989288A1 (fr) * 2012-04-12 2013-10-18 Magpro Separateur par courant de foucault
US9950324B2 (en) 2012-04-12 2018-04-24 Magpro Separator by foucault current
WO2013167591A1 (de) 2012-05-10 2013-11-14 Hochschule Rapperswil Wirbelstromabscheider
CN104888955A (zh) * 2015-06-17 2015-09-09 苏州嘉诺环保科技有限公司 一种高频涡流有色金属分选机
CN105797846A (zh) * 2016-04-15 2016-07-27 中山大学 一种分离破碎电子废弃物小尺寸有色金属的涡流分选机
CN105797846B (zh) * 2016-04-15 2017-12-26 中山大学 一种分离破碎电子废弃物小尺寸有色金属的涡流分选机
EP3260203A1 (de) * 2016-06-21 2017-12-27 Sebastian Anton Schley Vorrichtung zur trennung von partikeln unterschiedlicher elektrischer leitfähigkeit in einem inhomogenen sortiergut
FR3058330A1 (fr) * 2016-11-10 2018-05-11 Alfyma Industrie Dispositif optimise de separation de produits
WO2018087306A1 (fr) * 2016-11-10 2018-05-17 Alfyma Industrie Dispositif optimisé de séparation de produits
CN108789174A (zh) * 2018-06-04 2018-11-13 金华职业技术学院 一种用于钢棒磨粒流的流体精密分离装置
WO2020014105A1 (en) * 2018-07-09 2020-01-16 Novelis Inc. Systems and methods for improving the stability of non-ferrous metals on a conveyor
US10836584B2 (en) 2018-07-09 2020-11-17 Novelis Inc. Systems and methods for improving the stability of non-ferrous metals on a conveyor
CN112469644A (zh) * 2018-07-09 2021-03-09 诺维尔里斯公司 用于提高传送机上的非铁金属的稳定性的系统和方法
CN112469644B (zh) * 2018-07-09 2022-06-14 诺维尔里斯公司 用于提高传送机上的非铁金属的稳定性的系统和方法
EP3814025B1 (de) * 2018-07-09 2023-02-22 Novelis, Inc. Vorrichtung und verfahren zum sortieren von material auf einem förderband
CN113182070A (zh) * 2021-05-13 2021-07-30 盐城工学院 一种新型干式风磁联合磁选机

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EP2289628B1 (de) 2014-06-18
EP2644277A3 (de) 2014-03-05

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