WO2014037082A1 - Eddy-current separator having rotating permanent-magnet discs - Google Patents

Eddy-current separator having rotating permanent-magnet discs Download PDF

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Publication number
WO2014037082A1
WO2014037082A1 PCT/EP2013/002548 EP2013002548W WO2014037082A1 WO 2014037082 A1 WO2014037082 A1 WO 2014037082A1 EP 2013002548 W EP2013002548 W EP 2013002548W WO 2014037082 A1 WO2014037082 A1 WO 2014037082A1
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WO
WIPO (PCT)
Prior art keywords
sorting method
circular magnetic
eddy
permanent
sorted
Prior art date
Application number
PCT/EP2013/002548
Other languages
German (de)
French (fr)
Inventor
Hans Boffo
Philipp Varley
Kim Ismet Sagar
Original Assignee
Hans Boffo
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 Hans Boffo filed Critical Hans Boffo
Publication of WO2014037082A1 publication Critical patent/WO2014037082A1/en

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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
    • B03C1/025—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
    • B03C1/23—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 whereby the particles to be separated are in solid form

Definitions

  • the present invention relates to a Wirbelstromscheider with rotating permanent magnet discs to increase the effective area and flow rate of the sorting material with significantly improved separation results.
  • eccentric eddy current separators are also manufactured.
  • the permanent magnets In the circulation drums, the permanent magnets must be arranged over the entire direction of rotation, so that at any position of the sorting a Kjraft Titan is exercised.
  • the sorting material experiences a force effect which leads to the transport of the sorted material on the sorting threshold.
  • This method involves a large amount of permanent magnet material or an alignment of very powerful electromagnets and the sorted material is in the inhomogeneous field with too high distances, which leads to compromises in terms of field strength and cost.
  • the eddy-current method described here considerably increases the effective area of the permanent magnet flooding on the sorted material.
  • the permanent magnets are arranged on a circular surface and rotate at a variable rotational speed.
  • the material to be sorted is brought parallel to the rotating circular surface by means of the conveyor belt. If the non-ferrous metals meet the rotating circular segment, the non-ferrous metals experience a force effect depending on the effective area due to the eddy currents as a function of the angular frequency, the distance and the magnetic field strength.
  • the eddy current method described here will be explained with reference to a construction example with reference to Figures 1 and 2, in which the minimum conditions are defined.
  • the eddy current method is preferably carried out with a permanent magnet arrangement.
  • the deflection rollers (2,3,4) each mounted on the right and left side at the end.
  • the drive train (9) is located on the deflection roller (2).
  • another deflection roller (5) Between the circular magnetic disc (lO) and the deflection roller (2) is another deflection roller (5), which is adjustable in height in the vertical direction.
  • the conveyor belt (14) is clamped between the deflection rollers (2, 3, 4) and receives, via the adjustable deflection roller (5), a slight change in angle, which changes the effective area and force vector direction.
  • a circular disc with areally arranged permanent magnets (10) in mutual north / south configuration of Figure 2 is mounted.
  • the permanent magnets (10) have a field coupling (13).
  • the circular magnetic disks (6a, 6b) are coupled to a motor (7) and by means of a power transmission (8).
  • the magnetic field generated by the rotation and the magnetic alignment of the circular magnetic disks (6a, 6b) flows on the underside of the conveyor belt (14) in each case half of the surface of the conveyor belt.
  • the permanent magnet-equipped circular magnetic disks (6a, 6b) are provided with a protective cover (II).

Abstract

The present invention relates to an eddy-current separator having rotating permanent-magnet discs for increasing the effective area and flow rate of the material to be sorted with considerably improved separation results. The eddy-current method described here considerably increases the effective area of the permanent-magnet magnetomotive force on the material to be sorted. The permanent magnets are arranged on a circular surface and rotate with a variable circumferential speed. The material to be sorted is moved parallel to the rotating circular surface with the aid of the conveyor belt. If the nonferrous metals strike the rotating circular segment, then, on account of the eddy currents, depending on the angular velocity, the distance and the magnetic field strength, the nonferrous metals are subjected to a force depending on the effective area.

Description

Patentanmeldung  Patent application
Wirbelstromscheider mit rotierenden Permanentmagnetscheiben Eddy current separator with rotating permanent magnet discs
Die vorliegende Erfindung betrifft einen Wirbelstromscheider mit rotierenden Permanentmagnetscheiben zur Erhöhung der Wirkfläche und Durchlaufmenge des Sortiergutes bei deutlich verbesserten Separationsergebnissen. The present invention relates to a Wirbelstromscheider with rotating permanent magnet discs to increase the effective area and flow rate of the sorting material with significantly improved separation results.
In bestehenden Wirbelstromscheidem werden am Ende eines Sortierbandes die UmlaufhOmmeln innenliegend mit Permanentmagneten bestückt. In existing eddy current separators, at the end of a sorting belt, the circulating balls are fitted internally with permanent magnets.
Neben Varianten in einfacher Form mit mitlaufender Trommel werden auch exzentrische Wirbelstromabscheider hergestellt. In den Umlauftrommeln müssen die Permanentmagnete über die gesamte Umlaufrichtung angeordnet werden, damit bei einer beliebigen Position des Sortiergutes eine Kjraftwirkung ausgeübt wird. In addition to variants in a simple form with revolving drum, eccentric eddy current separators are also manufactured. In the circulation drums, the permanent magnets must be arranged over the entire direction of rotation, so that at any position of the sorting a Kjraftwirkung is exercised.
Im Regelfall erfährt das Sortiergut dabei eine Kraftwirkung, die zur Mitnahme des Sortiergutes über die Sortierschwelle führt. As a rule, the sorting material experiences a force effect which leads to the transport of the sorted material on the sorting threshold.
Diese Verfahren beinhaltet einer große Menge von Permanentmagnetmaterial oder eine Ausrichtung sehr leistungsfähiger Elektromagnete und das Sortiergut befindet sich im inhomogenen Feld mit zu hohen Abständen, welches zu Kompromissen bezüglich der Feldstärke und zu den Kosten führt. This method involves a large amount of permanent magnet material or an alignment of very powerful electromagnets and the sorted material is in the inhomogeneous field with too high distances, which leads to compromises in terms of field strength and cost.
Das hier beschriebene Wirbelstromverfahren erhöht die Wirkfläche der Permanentmagnetdurchflutung auf das Sortiergut erheblich. Die Permanentmagnete sind auf einer Kreisfläche angeordnet und rotieren mit einer veränderbaren Umlaufgeschwindigkeit. Das Sortiergut wird parallel zur rotierenden Kreisfläche mit Hilfe des Förderbandes gebracht. Treffen die NE-Metalle auf das rotierende Kreissegment, so erfahren die NE-Metalle aufgrund der Wirbelströme in Abhängigkeit der Kreisfrequenz, des Abstandes und der Magnetfeldstärke eine Kraftwirkung in Abhängigkeit der Wirkfläche. The eddy-current method described here considerably increases the effective area of the permanent magnet flooding on the sorted material. The permanent magnets are arranged on a circular surface and rotate at a variable rotational speed. The material to be sorted is brought parallel to the rotating circular surface by means of the conveyor belt. If the non-ferrous metals meet the rotating circular segment, the non-ferrous metals experience a force effect depending on the effective area due to the eddy currents as a function of the angular frequency, the distance and the magnetic field strength.
Durch diesen Aufbau gelingt es, eine wesentlich höhere Wirkfläche und höhere Rotationsgeschwindigkeiten zu erzielen, welche die Kraftwirkung auf die NE-Metalle deutlich verstärkt. By this construction, it is possible to achieve a much higher effective area and higher rotational speeds, which significantly increases the force on the non-ferrous metals.
Neben einer höheren Austragung des Sortiergutes erfolgt auch eine bessere Separation von kleinen bis sehr kleinen NE-Metallen, Kupferkabeln und Edelstahlen. Funktionsbeschreibung In addition to a higher discharge of the sorting material is also a better separation of small to very small non-ferrous metals, copper cables and stainless steel. function Description
Das hier beschriebene Wirbelstromverfahren wird anhand eines Konstruktionsbeispiels anhand von Figur 1 und 2 erklärt, in dem die Mindestbedingungen definiert sind. Das Wirbelstromverfahren wird vorzugsweise mit Permanentmagnetanordnung ausgeführt. The eddy current method described here will be explained with reference to a construction example with reference to Figures 1 and 2, in which the minimum conditions are defined. The eddy current method is preferably carried out with a permanent magnet arrangement.
Auf einem Trägergestell(l) sind zwischen den Seitenträgern(12) die Umlenkrollen(2,3,4) jeweils am Ende rechtsseitig und linksseitig angebracht. Der Antriebsstrang(9) befindet sich an der Umlenkrolle(2). Zwischen der Kreismagnetscheibe(lO) und der Umlenkrolle(2) liegt eine weitere Umlenkrolle(5), die in der vertikalen Richtung in der Höhe einstellbar ist. Das Förderband(14) ist zwischen den Umlenkrollen(2,3,4) eingespannt und erhält über die einstellbare Umlenkrolle(5) eine leichte Winkeländerung, welche die Wirkfläche und Kraftvektorrichtung verändert. On a support frame (l) between the side supports (12), the deflection rollers (2,3,4) each mounted on the right and left side at the end. The drive train (9) is located on the deflection roller (2). Between the circular magnetic disc (lO) and the deflection roller (2) is another deflection roller (5), which is adjustable in height in the vertical direction. The conveyor belt (14) is clamped between the deflection rollers (2, 3, 4) and receives, via the adjustable deflection roller (5), a slight change in angle, which changes the effective area and force vector direction.
An den Punkten(6a,6b) ist jeweils eine Kreisscheibe mit flächig angeordneten Permanentmagneten(10) in wechselseitiger Nord/Süd-Konfiguration nach Figur 2 angebracht. Die Permanentmagnete(lO) besitzen eine Feldkopplung(13). Über die Antriebswellen(12) werden die Kreismagnetscheiben(6a,6b) mit einem Motor(7) und mittels einer Kraftübertragung(8) verkoppelt. At the points (6a, 6b) in each case a circular disc with areally arranged permanent magnets (10) in mutual north / south configuration of Figure 2 is mounted. The permanent magnets (10) have a field coupling (13). Via the drive shafts (12), the circular magnetic disks (6a, 6b) are coupled to a motor (7) and by means of a power transmission (8).
Das über die Rotation und der Magnetausrichtung erzeugte Magnetfeld der Kreismagnetscheiben(6a,6b) durchflutet an der Unterseite des Förderbandes(14) jeweils die Hälfte der Fläche des Förderbandes. The magnetic field generated by the rotation and the magnetic alignment of the circular magnetic disks (6a, 6b) flows on the underside of the conveyor belt (14) in each case half of the surface of the conveyor belt.
Die permanentmagnetbestückten Kreismagnetscheiben(6a,6b) werden mit einer Schutzabdeckung(ll) versehen. The permanent magnet-equipped circular magnetic disks (6a, 6b) are provided with a protective cover (II).

Claims

Ansprüche claims
1. Sortierverfahren zur kontaktlosen Separation von Nichteisenmetallen aus 1. Sorting method for non-contact separation of non-ferrous metals
einem Abfallstrom(Recycling), vorzugsweise Aluminium, Kupfer, Zink, Zinn, Messing und Bronze.  a waste stream (recycling), preferably aluminum, copper, zinc, tin, brass and bronze.
2. Sortierverfahren zur kontaktlosen Separation von Kupferkabeln/Kupferkabelabschnitten und Elektronikplatinen aus einem Abfallstrom(Recycling) . 2. Sorting method for contactless separation of copper cables / copper cable sections and electronic boards from a waste stream (recycling).
3. Sortierverfahren zur kontaktlosen Separation von Edelstahlen aus einem 3. Sorting method for contactless separation of stainless steel from a
Abfallstrom(Recycling) .  Waste stream (recycling).
4. Sortierverfahren nach Anspruch 1 bis 3 dadurch gekennzeichnet ist, dass an der Unterseite und vor dem Ende des Förderbandes einseitig oder zweiseitig eine mit Permanentmagneten bestückte Kreismagnetscheibe aufgebaut ist. 4. Sorting method according to claim 1 to 3, characterized in that on the underside and in front of the end of the conveyor belt is constructed on one side or on both sides with a permanent magnet equipped with circular magnetic disc.
5. Sortierverfahren nach Anspruch 1 bis 3 dadurch gekennzeichnet ist, dass nach dem Ende des Förderbandes, siehe Figur 3, einseitig oder zweiseitig eine mit Permanentmagneten bestückte Kreismagnetscheibe aufgebaut ist. 5. Sorting method according to claim 1 to 3, characterized in that after the end of the conveyor belt, see Figure 3, one-sided or two-sided equipped with permanent magnets circular magnetic disc is constructed.
6. Sortierverfahren nach Anspruch 1 bis 5 dadurch gekennzeichnet ist, dass die permanentmagnetenbestückte Kreismagnetscheibe einer wechselseitigen Ausrichtung einer Nord/Süd Konfiguration nach Figur 2 entspricht. 6. Sorting method according to claim 1 to 5, characterized in that the permanent magnet-equipped circular magnetic disc corresponds to a mutual orientation of a north / south configuration of Figure 2.
7. Sortierverfahren nach Anspruch 1 bis 6 dadurch gekennzeichnet ist, dass die Kreismagnetscheibe/n mit einem Motorantrieb gekoppelt sind. 7. Sorting method according to claim 1 to 6, characterized in that the circular magnetic disc / s are coupled to a motor drive.
8. Sortierverfahren nach Anspruch 1 bis 7 dadurch gekennzeichnet ist, dass die permanentgetriebenen Kreismagnetscheiben jeweils eine Feldkopplung besitzen. 8. Sorting method according to claim 1 to 7, characterized in that the permanently driven circular magnetic disks each have a field coupling.
9. Sortierverfahren nach Anspruch 1 bis 8 dadurch gekennzeichnet ist, dass nach Variante Figur 6 die Kreismagnetscheiben überlappend versetzt angeordnet sind. 9. Sorting method according to claim 1 to 8, characterized in that according to variant 6, the circular magnetic disks are arranged overlapping offset.
10. Sortierverfahren nach Anspruch 1 bis 9 dadurch gekennzeichnet ist, dass nach Variante Figur 5 die Kreismagnetscheiben übereinander liegen und damit ein homogenes Magnetfeld erzeugt wird. 10. Sorting method according to claim 1 to 9, characterized in that according to variant Figure 5, the circular magnetic disks are superimposed and thus a homogeneous magnetic field is generated.
PCT/EP2013/002548 2012-09-04 2013-08-23 Eddy-current separator having rotating permanent-magnet discs WO2014037082A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012017460.8 2012-09-04
DE201210017460 DE102012017460A1 (en) 2012-09-04 2012-09-04 Eddy current separator with rotating permanent magnet discs

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WO2014037082A1 true WO2014037082A1 (en) 2014-03-13

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021128615B4 (en) 2021-11-03 2023-09-28 Matthias Lücking Method for mechanically separating and recycling copper from copper cables or cable harnesses with copper cables, device for carrying out the method and suction nozzle of a suction device for use in such a device

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JPS52103302A (en) * 1976-02-27 1977-08-30 Agency Of Ind Science & Technol Equipment for recovering non-magnetic metal
JPS5848343U (en) * 1981-09-30 1983-04-01 株式会社日立製作所 Magnetic sorting device
US5522513A (en) * 1994-03-30 1996-06-04 Howell; Billy R. Separator disc
DE19737161A1 (en) * 1997-08-26 1999-04-22 Hamos Gmbh Recycling Und Separ Separation of shredded ferrous and nonferrous metals
EP1879700A1 (en) * 2005-04-21 2008-01-23 Magpro Magnetic separator of non-ferrous metal elements and selective sorting installation comprising such separators
DE102009056717A1 (en) * 2009-12-04 2011-06-09 Hubertus Exner Device and method for the separation of differently electrically conductive particles
DE102010036267A1 (en) * 2010-09-03 2012-03-08 Alexander Koslow Separation method and apparatus for non-ferrous metals

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5274170A (en) * 1975-12-16 1977-06-21 Agency Of Ind Science & Technol Recovery of metallic pieces
JPS52103302A (en) * 1976-02-27 1977-08-30 Agency Of Ind Science & Technol Equipment for recovering non-magnetic metal
JPS5848343U (en) * 1981-09-30 1983-04-01 株式会社日立製作所 Magnetic sorting device
US5522513A (en) * 1994-03-30 1996-06-04 Howell; Billy R. Separator disc
DE19737161A1 (en) * 1997-08-26 1999-04-22 Hamos Gmbh Recycling Und Separ Separation of shredded ferrous and nonferrous metals
EP1879700A1 (en) * 2005-04-21 2008-01-23 Magpro Magnetic separator of non-ferrous metal elements and selective sorting installation comprising such separators
DE102009056717A1 (en) * 2009-12-04 2011-06-09 Hubertus Exner Device and method for the separation of differently electrically conductive particles
DE102010036267A1 (en) * 2010-09-03 2012-03-08 Alexander Koslow Separation method and apparatus for non-ferrous metals

Non-Patent Citations (2)

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Title
ANDRES U: "TRENNUNG VON NICHTEISENMETALL-SCHROTT. ÖSEPARATION OF NON-FERROUS SCRAP METALS", AUFBEREITUNGS TECHNIK, VERLAG FUER AUFBEREITUNG, WIESBADEN, DE, vol. 35, no. 2, 1 February 1994 (1994-02-01), pages 71 - 78, XP000430520, ISSN: 0004-783X *
SCHUBERT G: "AUFBEREITUNG DER NE-METALLSCHROTTE UND NE-METALLHALTIGEN ABFAELLE \-TEIL 2*)", AUFBEREITUNGS TECHNIK, VERLAG FUER AUFBEREITUNG, WIESBADEN, DE, vol. 32, no. 7, 1 July 1991 (1991-07-01), pages 352 - 358, XP000216628, ISSN: 0004-783X *

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