EP0579966A1 - Verfahren und Vorrichtung zum Abtrennen nichtmagnetisierbarer Metalle aus einem Gemisch - Google Patents

Verfahren und Vorrichtung zum Abtrennen nichtmagnetisierbarer Metalle aus einem Gemisch Download PDF

Info

Publication number
EP0579966A1
EP0579966A1 EP93109924A EP93109924A EP0579966A1 EP 0579966 A1 EP0579966 A1 EP 0579966A1 EP 93109924 A EP93109924 A EP 93109924A EP 93109924 A EP93109924 A EP 93109924A EP 0579966 A1 EP0579966 A1 EP 0579966A1
Authority
EP
European Patent Office
Prior art keywords
rotor
magnetic
mixture
disks
inductor
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.)
Ceased
Application number
EP93109924A
Other languages
German (de)
English (en)
French (fr)
Inventor
Erwin Kaldenbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lyndex Recycling Systems Ltd
Original Assignee
Lindemann Maschinenfabrik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lindemann Maschinenfabrik GmbH filed Critical Lindemann Maschinenfabrik GmbH
Publication of EP0579966A1 publication Critical patent/EP0579966A1/de
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/20—Magnetic separation of bulk or dry particles in mixtures

Definitions

  • the invention relates to a method and a device for separating non-magnetizable metals from a mixture by means of eddy current.
  • An alternating magnetic field is generated for eddy current separation of non-magnetisable, electrically highly conductive metals, for example - as has become known from German Patent 3,817,003 - by means of an inductor or by means of a magnet rotor.
  • the feed material - hereinafter also referred to as a solid mixture or mixture - can be guided over the poles of the alternating magnetic field generator, for example on a conveyor belt or in free fall.
  • Eddy currents are induced in the electrically highly conductive constituents of the solid mixture to be separated, which build up their own magnetic fields opposing the generating field and accelerate these components relative to the other constituents of the solid mixture due to the resulting repulsive electromagnetic forces.
  • Eddy current separation can be used to separate non-ferromagnetic, highly electrically conductive materials, such as aluminum and copper, from non-ferrous solid mixtures and non-ferrous metal / non-metal solid mixtures, such as automobile shredder rubble, electronic scrap and the like. If this Solids mixtures contain ferromagnetic parts, the eddy current separation should be preceded by a magnetic separation in order to remove ferromagnetic parts beforehand. In addition, other sorting and classifying stages are expediently preceded by the eddy current separation, because the greatest possible pre-enrichment and fractionation of the solid mixture added have a positive effect on the separation success and the throughput of the eddy current separator.
  • a rapidly rotating rotor equipped with permanent magnets and adjustable in its position, is arranged eccentrically inside an outer drum wrapped in a conveyor belt.
  • the solid mixture fed via the conveyor belt is flooded by the full flow of the magnetic field when the material discharge zone is reached. Because exactly in this area the magnetic rotor has been set so that when the material to be separated falls or slides due to gravity, the combination of the mechanical ejection forces with the latest possible forces of the magnetic field for the non-ferrous metals is the greatest Deflection of the throwing parabola and thus a targeted separation from the other mixture components results.
  • the non-ferrous metals deflected on a wide throwing parabola fall in a defined manner into a collecting container which is set up at a distance from the collecting point for the other mixture components.
  • the separation into valuable non-ferrous metal components and other components is supported by means of a separation apex which can be adjusted with its apex in a substantially horizontal direction. The latter components fall down essentially without deflection and, viewed in the transport direction, reach an area in front of the parting parting.
  • eddy current separators have two mutually parallel, vertical, rotationally driven disks, which are fitted with magnets of alternating polarity.
  • the solid mixture to be separated enters the upper middle region between the disks via a feed device.
  • the magnets on the rotating disks induce eddy currents with a high field density in the solid mixture entering the space between the disks, which interact with the magnetic field of the rotating disks.
  • this eddy current separator which can also have several disks arranged at a distance from one another, it is possible to utilize the different conductivity of the mixture components of the solid mixture, e.g. B.
  • non-magnetic steels which have an austenitic or austenitic / ferritic structure and whose electrical conductivity is low, from those components whose conductivity is good, such as copper.
  • density also has a significant influence on eddy current separation.
  • the deflectability of an electrical conductor results from the quotient of electrical conductivity and its density.
  • the invention has for its object to provide a method and an apparatus which allow in particular small and flat non-ferrous metals to be separated from a solid mixture.
  • this object is achieved in that the mixture is exposed to alternating magnetic fields from at least three directions.
  • the non-ferrous metals are influenced surprisingly and strongly selectively.
  • a device for separating non-magnetisable metals from a mixture by means of eddy current has in the mixture feeder a combination alternating magnetic field generator consisting of a magnetic rotor - alternatively an inductor - and a magnetic disc rotor comprising at least two parallel, vertical, rotationally driven discs. Disks arranged in parallel are also to be understood to mean, for example, advantageously disks designed like pots or bowls.
  • the invention leads to the surprising result, which has been confirmed by tests, that when a magnetic rotor and a magnetic disk rotor are used in combination, an optimized separation result can be achieved, in particular with regard to the problematic flat components of a solid mixture.
  • the magnetic rotor or the inductor which can be arranged eccentrically and adjustable advantageously with respect to the magnetic disk rotor, influences the non-ferrous particles from below and the magnetic disk rotor from the sides, the flat parts in a position favorable to the alternating field.
  • the two rotors or the magnetic disk rotor and the inductor are spatially separated from one another in the mixture feed and the mixture is thus exposed to the alternating magnetic fields from at least three directions in the course of the separation process, namely once the magnetic disk rotor and then the magnetic rotor or inductor, and vice versa.
  • Matture supply is also understood to mean the version in which the solid mixture is first applied to the magnetic rotor or the inductor in separate work steps and then to the magnetic disk rotor - or vice versa - ie a discontinuous or gradual feeding of the solid mixture.
  • the eddy current generators - as described - can be spatially separated from one another, it is nevertheless proposed according to a preferred embodiment of the invention that the magnet rotor or the inductor and the magnet disk rotor are built into one another coaxially, the magnet rotor or the inductor bridging the axial distance between the disks .
  • the two eddy current generators thus represent a unit and thus a completely new concept for an alternating magnetic field generator, namely a combination alternating magnetic field generator, in which the alternating eddy current effects combine to form a synergistic separation effect.
  • the magnetic rotor which is arranged concentrically or eccentrically to the two rotor disks, the drum of which forms a hub of the combination alternating magnetic field generator, lifts the non-ferrous particles of the solid mixture
  • the magnetic fields of the magnetic disk rotor that influence the non-ferrous particles from the sides exert an additional impulse on the non-ferrous particles, with the result that different discharge parabolas are defined for the various recyclables to be separated.
  • the greater spreading of the throwing parabolas of the different non-ferrous metals is also favored by the interaction of three overlapping and reinforcing fall curves or throwing parabolas, namely a throwing parabola independent of the magnetic field and determined by the speed, for example, of a conveyor belt feeding the solid mixture, and the throwing parabolas due to the Magnet rotor or the inductor and the magnetic disk rotor.
  • the inductor can be switched on if necessary, which can contribute to energy savings.
  • the magnetic rotor and the magnetic disk rotor have a common axis of rotation, only one drive is required. Nevertheless, it is within the scope of the invention that the two rotors are driven independently of one another and possibly in opposite directions, so that an individual speed control, e.g. via frequency converter.
  • the rotor speeds which are already designed to be lower than usual due to the combined action of the eddy current according to the material and have no adverse effect on the separation result, and the lower inertial forces thus achieved can be further reduced by a targeted speed control.
  • the magnetic rotor or the inductor and the magnetic disk rotor, i.e. the combination alternating magnetic field generator is arranged in an H-shaped housing made of an antimagnetic and electrically poorly conductive material, adapted to the contour of the combination device.
  • the expression “poor electrical conductivity” takes into account that, according to scientific understanding, all materials are electrically conductive; a distinction is only made between better or poorer conductive materials, the conductivity of the latter practically going to zero (cf. page 522 from "Taschenbuch Elektrotechnik", vol. 1, Carl Hanser Verlag).
  • the housing completely encapsulates the rotors from the outside.
  • the housing is advantageously mounted such that it can rotate and is designed as a front, driven deflection drum for an endless conveyor belt that feeds the solid mixture between the disks of the magnetic disk rotor, the hub of the housing receiving the combined machine unit simultaneously forms the outer drum of the magnetic rotor and the deflection drum for the endless conveyor belt.
  • the combination alternating magnetic field generator and / or the deflection drum can be horizontally and / or vertically adjustable.
  • the deflection drum i.e. the housing serving to deflect the conveyor belt at the same time, can in any case be adjusted in order to achieve an optimal position of the conveyor belt in relation to the two rotors.
  • the setting options are expanded if a rear guide roller deflecting the conveyor belt is pivotably mounted.
  • the conveyor belt loops around at least two deflection or conveyor rollers and engages with at least its upper run between the disks of the magnetic disk rotor and runs above the central section of the H-shaped housing variably adjust the movement or orbit of the conveyor belt feeding the solid mixture to the two rotors enclosed by the stationary housing by changing the position of the deflection or guide rollers and expanding the number of rollers. Furthermore, it is also possible to provide a feed of the solid mixture below the combination magnetic field generator.
  • a combination alternating magnetic field generator 1 shown in FIG. 1 consists of a magnet rotor 2 and a disk magnet rotor 3 which has two vertical, rotationally driven disks 4 which are arranged at a distance from one another and in which flat permanent magnets 5 are embedded to generate the effective magnetic field (cf. . 2).
  • the magnet rotor 2 arranged in a drum 6 is also provided with rows of permanent magnets 7 fastened in alternating north-south polarity in the base body.
  • the magnetic rotor 2 and the magnetic disk rotor 3 are built into one another, the magnetic rotor 2 being arranged concentrically with respect to the disks 4 and bridging the axial distance between the disks 4 compared to a smaller diameter (cf. FIG. 2).
  • the permanent magnets 5 of the magnetic disk rotor 3 face each other Arranged sides of the disks 4 and distributed approximately from the magnetic rotor 2 to the outer periphery of the disks 4 in these.
  • the magnet rotor 2 and the magnetic disk rotor 3 are arranged in a housing 8 which is adapted to the cross-sectionally H-shaped contour of the combination alternating magnetic field generator 1, the hub-like middle part of which accommodates the magnet rotor 2 and simultaneously serves as a front deflection drum for a second rear deflection drum 9 guided endless conveyor belt 11 serving drum 6 forms.
  • the magnetic rotor 2 and the magnetic disk rotor 3 have a common axis of rotation 12, which is driven at high speed by a motor (not shown) and which is supported in roller bearings 13.
  • the housing 8 is also stored in roller bearings 14 and is driven by a motor, not shown, at a low, variable speed, so that the conveyor belt 11 wrapping around the drum 6 of the driven housing 8 at a speed of optionally 0.2 to 1.8 m / s revolves.
  • the combination alternating magnetic field generator 200 shown in FIG. 6 differs from the previously described embodiment only in that the magnetic rotor 39 is arranged eccentrically and can be pivoted in the direction of the arrow 41; it can be adjusted exactly to the discharge point of the solid mixture.
  • a swivel-mounted inductor 38 is located in the drum 6 instead of a magnetic rotor.
  • a mixture of solids is placed onto the conveyor belt from a low height, for example from a vibration channel (not shown) inclined in the direction of conveyance 15 of the conveyor belt 11.
  • the solids mixture which has already been uniform in height and width on the vibrating trough during transport, is further homogenized and distributed due to a higher speed of the conveyor belt 11 than the vibrating trough, so that the layer height of the solid mixture is further reduced and the mixture components 16 form an essentially single-layer layer form, as this is extremely exaggerated in the figures for reasons of clarity.
  • the mixture components 16 reach the effective range of the eddy currents generated by the two rotors 2, 3 or the inductor 38 and the magnetic disk rotor 3, they are influenced by magnetic fields from three directions. 2, the magnetic field of the magnetic rotor 2 - or inductor 38 - acting from below on the mixture components 16 is indicated by arrows 17 and the magnetic fields of the magnetic disk rotor 3 acting on the mixture components 16 from two sides are identified by arrows 18.
  • the force of the eddy currents of the supporting magnetic fields 17, 18 of the magnetic rotor 2 and the magnetic disk rotor 3 for the non-ferrous metals corresponding to the throwing parabolas 19 and 21 results from the fully effective force of the eddy currents in the material discharge area of the combination alternating magnetic field generator 1 a wide deflection of the curve so that these components can be collected separately from one another and from heavy metals falling according to the throwing parabolas 22 essentially without deflection in different collecting chambers 23, 24, 25.
  • the collection in the collecting chambers 23 to 25 assigned to the individual separated components is supported by the dividing plates 26 facing the throwing parabolas 19 or 21 and 22.
  • the housing 8 encapsulating the magnet rotor 2 and the magnetic disk rotor 3 cannot be driven, that is to say it can be made stationary.
  • the conveyor belt 11 loops around a driven front head roller 27 and a rear deflection or guide roller 28, and its runs run in the space between the two disks of the magnetic disk rotor 3, the magnet rotor 2 being located between the upper and the lower run.
  • the conveyor belt can be variably positioned in a simple manner.
  • the combination alternating magnetic field generator 100 shown in FIG. 4 is assigned a conveyor belt 11 which is guided over three guide rollers 29 and 31, 32 which deflect it in a triangular manner.
  • only the horizontal belt section extends between the disks of the magnetic disk rotor 3, and the guide roller 29, which is arranged downstream of the combination alternating magnetic field generator 100 in the conveying direction 15 and is designed as a top roller, can be brought close to the magnetic disk rotor 3 due to its small diameter, which results in the discharge the mixture components 16 fed by the conveyor belt 11 favors.
  • the combination magnetic field generator 1, 100, 200, 300 and / or the deflection or guide rollers 9, 28 are horizontally and / or vertically adjustable.

Landscapes

  • Sorting Of Articles (AREA)
EP93109924A 1992-07-20 1993-06-22 Verfahren und Vorrichtung zum Abtrennen nichtmagnetisierbarer Metalle aus einem Gemisch Ceased EP0579966A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924223812 DE4223812C1 (enrdf_load_stackoverflow) 1992-07-20 1992-07-20
DE4223812 1992-07-20

Publications (1)

Publication Number Publication Date
EP0579966A1 true EP0579966A1 (de) 1994-01-26

Family

ID=6463625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93109924A Ceased EP0579966A1 (de) 1992-07-20 1993-06-22 Verfahren und Vorrichtung zum Abtrennen nichtmagnetisierbarer Metalle aus einem Gemisch

Country Status (2)

Country Link
EP (1) EP0579966A1 (enrdf_load_stackoverflow)
DE (1) DE4223812C1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006111636A1 (fr) * 2005-04-21 2006-10-26 Magpro Separateur magnetique d’elements conducteurs en metal non ferreux et installation de tri selectif comprenant de tels separateurs

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29513613U1 (de) * 1994-10-28 1995-10-26 NSM Magnettechnik GmbH, 59399 Olfen Einrichtung zum Stapeln von Teilen aus elektrisch leitendem, nicht-ferromagnetischem Werkstoff, insbesondere von Aluminium-Dosendeckeln
DE19938372A1 (de) * 1999-08-09 2001-03-08 Diagnostikforschung Inst Verfahren und Vorrichtung zur Trennung magnetischer Teilchen
NL2001431C2 (nl) 2008-04-02 2009-10-05 Univ Delft Tech Werkwijze voor het scheiden van een afvalstroom.
EP2412452B1 (en) 2010-07-28 2013-06-05 Inashco R&D B.V. Separation apparatus
NL2006306C2 (en) 2011-02-28 2012-08-29 Inashco R & D B V Eddy current seperation apparatus, separation module, separation method and method for adjusting an eddy current separation apparatus.
FR2984185B1 (fr) * 2011-12-14 2014-10-31 Sas Gs Magnetic Dispositif de separation magnetodynamique
FR2989288B1 (fr) 2012-04-12 2015-01-16 Magpro Separateur par courant de foucault

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743364A (en) * 1984-03-16 1988-05-10 Kyrazis Demos T Magnetic separation of electrically conducting particles from non-conducting material
DE3810715A1 (de) * 1988-03-30 1989-10-12 Peter Weiss Vorrichtung zum trennen metallischer schrott-teile
EP0439983A2 (fr) * 1990-01-29 1991-08-07 ETS G. ANDRIN ET FILS (Société Anonyme) Séparateur magnétique de particules et morceaux en métal non-ferreux
US5080234A (en) * 1990-08-15 1992-01-14 Walker Magnetics Group, Inc. Eddy current separator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3817003C1 (en) * 1988-05-19 1989-10-12 Lindemann Maschinenfabrik Gmbh, 4000 Duesseldorf, De Apparatus for separating non-magnetisable metals from a mixture of solids

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743364A (en) * 1984-03-16 1988-05-10 Kyrazis Demos T Magnetic separation of electrically conducting particles from non-conducting material
DE3810715A1 (de) * 1988-03-30 1989-10-12 Peter Weiss Vorrichtung zum trennen metallischer schrott-teile
EP0439983A2 (fr) * 1990-01-29 1991-08-07 ETS G. ANDRIN ET FILS (Société Anonyme) Séparateur magnétique de particules et morceaux en métal non-ferreux
US5080234A (en) * 1990-08-15 1992-01-14 Walker Magnetics Group, Inc. Eddy current separator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006111636A1 (fr) * 2005-04-21 2006-10-26 Magpro Separateur magnetique d’elements conducteurs en metal non ferreux et installation de tri selectif comprenant de tels separateurs
FR2884735A1 (fr) * 2005-04-21 2006-10-27 Magpro Sarl Separateur magnetique d'elements conducteurs en metal non ferreux et installation de tri selectif comprenant de tels separateurs

Also Published As

Publication number Publication date
DE4223812C1 (enrdf_load_stackoverflow) 1993-08-26

Similar Documents

Publication Publication Date Title
EP0388626B1 (de) Vorrichtung zum Abtrennen von nichtmagnetisierbaren Metallen aus einer Feststoffmischung
DE3872986T3 (de) Verfahren und Apparat zur Ausscheidung von Nichteisenmetall-Stücken.
EP0339195B1 (de) Magnetscheider
DE2653373A1 (de) Magnetische materialtrennungseinrichtung
EP0342330A2 (de) Vorrichtung zum Abtrennen von nichtmagnetisierbaren Metallen aus einer Feststoffmischung
EP2506978B1 (de) Vorrichtung und verfahren zur trennung von unterschiedlich elektrisch leitfähigen partikeln
DE3407326C2 (de) Verfahren und Vorrichtung zum Abtrennen elektrisch leitfähiger Nichteisenmetalle
DE8002678U1 (de) Metallsortiervorrichtung
DE69006710T2 (de) Magnetscheider für Nichteisenmetall-Teilchen oder -Stücke.
AT401020B (de) Verfahren zur trennung eines heterogenen materialstromes in zwei ströme mit unterschiedlichen physikalischen eigenschaften und vorrichtung zur durchführung desselben
EP0579966A1 (de) Verfahren und Vorrichtung zum Abtrennen nichtmagnetisierbarer Metalle aus einem Gemisch
DE19838170C2 (de) Verfahren und Vorrichtung zur Wirbelstromscheidung von Materialgemischen in Teilchenform
EP0550867B1 (de) Vorrichtung zum Abtrennen von nichtmagnetisierbaren Metallen aus einem Feststoffgemisch
EP0083445A1 (de) Verfahren und Vorrichtung zum Sortieren von leitenden nichtferromagnetischen Gemengen
DE3817003C1 (en) Apparatus for separating non-magnetisable metals from a mixture of solids
DE19649154C1 (de) Verfahren und Vorrichtung zur Steigerung der Trennschärfe von Wirbelstromscheidern
DE19737161A1 (de) Verfahren, Anlage und Vorrichtungen zum trockenen Abtrennen von Metallen aus zerkleinerten Schüttgütern, insbesondere Schrottgemischen
DE2509638A1 (de) Abtrennungsverfahren und vorrichtung zur durchfuehrung
EP0389767B1 (de) Vorrichtung zum Abtrennen von nichtmagnetisierbaren Metallen aus einem Feststoffgemisch
DE4035960A1 (de) Verfahren und vorrichtung zum trennen unterschiedlich grosser gemischbestandteile eines feststoffgemisches
DE19629110C1 (de) Verfahren und Vorrichtung zum Trennen von feinteiligen Stoffgemischen mittels eines magnetischen Feldes
DE3810715C2 (enrdf_load_stackoverflow)
DE2532493A1 (de) Verfahren und vorrichtung zur nassmagnetischen aufbereitung von feinkoernigem feststoff
DE4238988C2 (de) Vorrichtung zum Abtrennen von Metallen aus einem durch ein Magnetfeld geführten Gemisch
DE2649598C2 (de) Fliehkraft-Magnetscheider

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB IT LI SE

17P Request for examination filed

Effective date: 19940202

17Q First examination report despatched

Effective date: 19950911

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED

18R Application refused

Effective date: 19970607