EP0439983A2 - Magnetscheider für Nichteisenmetall-Teilchen oder -Stücke - Google Patents

Magnetscheider für Nichteisenmetall-Teilchen oder -Stücke Download PDF

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Publication number
EP0439983A2
EP0439983A2 EP90440120A EP90440120A EP0439983A2 EP 0439983 A2 EP0439983 A2 EP 0439983A2 EP 90440120 A EP90440120 A EP 90440120A EP 90440120 A EP90440120 A EP 90440120A EP 0439983 A2 EP0439983 A2 EP 0439983A2
Authority
EP
European Patent Office
Prior art keywords
magnetic separator
conveyor belt
roller
separator according
deflection roller
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
Application number
EP90440120A
Other languages
English (en)
French (fr)
Other versions
EP0439983A3 (en
EP0439983B1 (de
Inventor
Daniel Andrin
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.)
ETS G. ANDRIN ET FILS (SOCIETE ANONYME)
Francaise des Ferrailles C F F Cie
Original Assignee
Ets G Andrin Et Fils SA
Francaise des Ferrailles C F F Cie
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 Ets G Andrin Et Fils SA, Francaise des Ferrailles C F F Cie filed Critical Ets G Andrin Et Fils SA
Publication of EP0439983A2 publication Critical patent/EP0439983A2/de
Publication of EP0439983A3 publication Critical patent/EP0439983A3/fr
Application granted granted Critical
Publication of EP0439983B1 publication Critical patent/EP0439983B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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 of particles and pieces of non-ferrous metal comprising a conveyor belt on which said particles are poured, this conveyor belt being wound, partially, around an active cylindrical envelope with horizontal axis of rotation designed in a non-conductive material and inside which is mounted, coaxially, a magnetic system subjected to a speed of rotation greater than that of said active cylindrical envelope.
  • the present invention will find its application in the field of industrial recycling of waste composed, mainly, of non-ferrous metal products.
  • FOUCAULT current separation based on the principle that conductive materials undergo, through an alternating magnetic field, a different influence according to their conductivity coefficient, is well known.
  • its industrial application poses a certain number of problems due, in particular, to the low separation yields which it provides.
  • a magnetic separator for industrial application operating according to the above principle is known.
  • This magnetic separator consists of a strip fed with non-ferrous particles and pieces, this strip partially winding around an active cylindrical envelope and made of a non-conductive material.
  • a magnetic system also called, polar wheel.
  • this magnetic system consists of a succession of permanent magnets or electromagnets arranged radially with respect to an axis of rotation corresponding to the axis of rotation of the cylindrical envelope.
  • the latter is driven by a speed of rotation substantially slower than that of the polar wheel so that the non-ferrous particles and pieces are effectively subjected to an alternating magnetic field.
  • the combination of the speed of movement of the conveyor belt and the influence of the pole wheel has the consequence of subjecting these non-ferrous particles and pieces to a speed whose value of the horizontal component differs according to their conductivity, this resulting in a distinct fall trajectory and, ultimately, their reception in different containers.
  • a magnetic separator In order to remedy the aforementioned problems and limit the influence of the polar wheel on the non-ferrous particles at a determined location in the cylindrical envelope, a magnetic separator has been designed, the polar wheel of which is offset at the interior of this cylindrical envelope, its diameter being reduced by half compared to the latter.
  • a magnetic separator is described in particular in document EP-A-0.339.195.
  • the alternating magnetic field, produced by the rotating polar wheel tends to decrease quickly when you move away from it.
  • an air gap which is reduced as much as possible.
  • the minimum air gap is located along a generator of the latter, this air gap coming to increase on either side of this generator leading to less influence of non-ferrous particles and pieces.
  • the latter are no longer subjected to a magnetic field exerting its influence on what can be determined as an area of the active cylindrical envelope but, more precisely, to a very localized magnetic field at the level of the latter.
  • the results obtained by means of such magnetic separators are unsatisfactory, the efficiency of the separation being poor.
  • the present invention aims to remedy all of the aforementioned drawbacks by proposing a magnetic separator which is capable of subjecting the non-ferrous particles and pieces to a sufficient influence of an alternating magnetic field while avoiding giving them, by through this influence, accelerations with vertical components so that the path taken is sufficiently distinctive as a function of their conductivity allowing, ultimately, a separation with high efficiency.
  • the invention as characterized in the claims, solves the problem and consists of a magnetic separator of particles and pieces of non-ferrous metals, comprising a conveyor belt onto which are poured said particles and pieces of non-ferrous metals, this conveyor belt partially winding around an active cylindrical envelope with horizontal axis of rotation made of a non-conductive material and inside which is mounted, coaxially, a magnetic system subjected to a speed of rotation greater than that of said envelope active cylindrical, this magnetic separator also comprising means for limiting the partial winding of the conveyor belt around the active cylindrical envelope over an area situated in the upper two quarters of the periphery of the latter.
  • the aim sought by the present invention is that the zone of maximum influence of the particles on the conveyor belt is not limited to the level of a generator of the latter but that, for all that, it does not result therefrom not an acceleration with vertical components of the particles and non-ferrous pieces to be separated.
  • FIG. 1 is a schematic representation of the magnetic separator, object of the present invention.
  • the invention relates to a magnetic separator 1 allowing the recovery of waste consisting mainly of non-ferrous metal particles and pieces, and this, by ensuring their sorting according to their conductivity.
  • this magnetic separator 1 as shown in FIG. 1 comprises a conveyor belt 2 on which the particles and pieces 3 to be sorted are poured.
  • This conveyor belt 2 comes to wind, partially and substantially at its downstream end 4, around a cylindrical envelope 5, with horizontal axis of rotation 8, integrating a magnetic system 6 capable of subjecting said particles and pieces 3 to an alternating magnetic field.
  • this magnetic system 6 is similar to a polar wheel arranged coaxially inside said cylindrical envelope 5 and consists of a plurality of permanent magnets or electromagnets 7 arranged radially with respect to the axis of rotation 8.
  • this magnetic system 6 is subjected to a rotation whose speed is substantially greater than that of the cylindrical envelope 5 which is dependent on the running speed of the conveyor belt 2.
  • this magnetic separator 1 comprises means 17, 18 for limiting the partial winding of the conveyor belt 2 around the active cylindrical envelope 5 over an area 20 located, according to a reference fixed (X, Y) 23, in the upper two quarters 20a, 20b of the periphery of the latter.
  • the objective aimed by such means 17, 18 is that it is possible to subject the particles and pieces 3 to an alternating magnetic field of maximum intensity so as to obtain a maximum yield of the effect produced. resulting in trajectories well distinct drop depending on their conductivity. Also, it should be avoided, by means of these means 17, 18 that this prolonged influence undergone by the particles 3 via the magnetic system 6 leads to accelerations with vertical components of said particles and pieces 3 which would have as a consequence of lessening the desired effects.
  • these means 17, 18, consist, on the one hand, of a deflection roller 9 whose position, relative to the active cylindrical envelope 5, is determined so that the location 22, where the conveyor belt 2 enters into contact with said active cylindrical casing 5, is located precisely, in the upper two quarters 20a, 20b of the latter.
  • this means are supplemented by a second roller 21 disposed below the cylindrical casing 5 and around which the conveyor belt 2 is partially wound.
  • this second deflection roller 21 is capable of intervening on the coordinates, with respect to this fixed mark 23, of the point 24 where this conveyor belt 2 again comes to leave the cylindrical casing 5 and to ensure that this point 24 is preferably located in the two upper quarters 20a , 20b of said active cylindrical envelope 5.
  • the deflection roller 9, arranged in the upstream part 10 of the circuit of the conveyor belt 2, may be associated with means allowing its height adjustment.
  • the lower the deflection roller 9 is lowered by means of the height adjustment means so as to give the upper strand 11 of the conveyor belt 2, an inclination 25 relative to the horizontal tending to impart to the particles and pieces. 3 an upward movement in the direction of the cylindrical casing 5, the earlier the contact takes place between the latter and said conveyor belt 2, contributing to an increase in the area 20.
  • the roller 21 can also be equipped with height adjustment means and in a horizontal direction.
  • the area 20 of influence of the magnetic system 6 on the particles and pieces 3 can be further increased or, on the contrary, decreased when the deflection roller 21 is pivoted counterclockwise, respectively, in the clockwise around the cylindrical envelope 5. More precisely, it suffices to modify the angle 21a, formed by the strand 21b described by the conveyor belt 2 between this deflection roller 21 and the cylindrical envelope 5 and, this, with respect to the vertical.
  • the deflection roller 21 may also include a magnetic system with permanent or electromagnetic magnet allowing the treatment of the more or less ferromagnetic particles and pieces which are residual. In this case, the latter are collected in an additional container 50.
  • the deflection roller 9, disposed in the upstream part 10, is mounted on an axis 27 the ends of which are capable of sliding in slots of oblong shape 28 arranged at the level of vertical supports 29 made integral with the machine chassis (not shown).
  • this can be mounted on an axis 30, the ends of which can also slide in oblong slots 31 arranged vertically and formed in supports 32 which can be moved horizontally on the chassis to which they are attached. Note, however, that a reverse arrangement can be adopted consisting of making the supports 32 movable in the vertical direction while allowing a certain mobility of the axis 30 of the deflection roller 21 in oblong slots 33 machined in the horizontal direction at level of said supports 32.
  • FIG. 1 represents the two possible embodiments.
  • FIG. 1 illustrates, moreover and in broken lines, a third embodiment of the means allowing the pivoting of the deflection roller 21 around the cylindrical envelope 5. More precisely, within the framework of this embodiment, the axis 30, on which the deflection roller 21 is mounted, is capable of moving, at its ends, in oblong slots 34 made, this time in the end 35 of the support arms 36 pivotally mounted around the axis of rotation 8 corresponding to the axis of rotation of the cylindrical casing 5.
  • this length 19 is to be kept for the sorting of a whole range of non-ferrous metal particles and pieces with different conductivity coefficients and that only the angle of inclination 25 of the upper strand 11 corresponding to the conveyor belt 2 is to be modified.
  • the length 19 of the zone of influence 20 is, therefore, maintained.
  • this arrangement avoids taking up the tension of the conveyor belt 2 during the various adjustments.
  • the various means for adjusting the deflection roller 9, located upstream 10, and the roller 21, are not essential from the moment when the optimum parameters for the operation of the magnetic separator are known depending on the data relating to the products which should be separated later.
  • the deflection roller 9 can be positioned definitively in the frame of the magnetic separator 1 during the design of the latter and this, so as to obtain this inclination 25.
  • the roller 21 the roller 21.
  • the present invention also proposes to avoid any possible deterioration of the cylindrical envelope 5 in the event of insertion of a ferromagnetic particle or piece found by chance in the non-ferrous particles and pieces between this cylindrical envelope and the conveyor belt 2. More particularly, in the event of punctual wear of the latter, not justifying, however, its replacement, it is likely that certain ferromagnetic particles or pieces are found by chance in the non-ferrous particles and pieces come to s '' inlay in the conveyor belt 2 at this wear and, finally, are inserted between the conveyor belt 2 and the cylindrical casing 5.
  • this ferromagnetic particle or piece is found by chance in the particles and pieces not ferrous is maintained for a prolonged period under the influence of the alternating magnetic field, it is brought to heat strongly tending destroying the cylindrical envelope 5 made of a non-conductive material. Also, it is strongly advised to remove, as quickly as possible, this ferromagnetic particle or piece found by chance in the non-ferrous particles and pieces of the external surface of this cylindrical envelope 5.
  • scraper 38 of semi-cylindrical shape with a radius greater than the radius of the cylindrical casing 5 and disposed between the upper strand 11 and the lower strand 12 of the conveyor belt 2.
  • This scraper 38 is mounted pivoting about a horizontal axis 39 situated substantially downstream from its vertical median plane so as to create an imbalance tending to maintain applying one of the ends 41 of this scraper 38 against the cylindrical casing 5.
  • This end 41 of the scraper 38 acting tangentially is preferably of tapered shape which contributes to its effectiveness.
  • this roller 21 is also provided with a scraper 38.
  • the magnetic separator object of the present invention, has the advantage of an optimized operation leading to high separation rates. Also, such magnetic separators, in accordance with the invention, provide a solution to the problem posed, until now, by the industrial application of separators by FOUCAULT current.

Landscapes

  • Electrostatic Separation (AREA)
  • Sorting Of Articles (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Cell Separators (AREA)
EP19900440120 1990-01-29 1990-12-14 Magnetscheider für Nichteisenmetall-Teilchen oder -Stücke Expired - Lifetime EP0439983B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9001175A FR2657544B1 (fr) 1990-01-29 1990-01-29 Separateur magnetique de particules et morceaux en metal non-ferreux.
FR9001175 1990-01-29

Publications (3)

Publication Number Publication Date
EP0439983A2 true EP0439983A2 (de) 1991-08-07
EP0439983A3 EP0439983A3 (en) 1991-11-06
EP0439983B1 EP0439983B1 (de) 1994-02-16

Family

ID=9393306

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900440120 Expired - Lifetime EP0439983B1 (de) 1990-01-29 1990-12-14 Magnetscheider für Nichteisenmetall-Teilchen oder -Stücke

Country Status (5)

Country Link
EP (1) EP0439983B1 (de)
JP (1) JPH04215861A (de)
DE (1) DE69006710T2 (de)
ES (1) ES2049957T3 (de)
FR (1) FR2657544B1 (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009873A1 (en) * 1991-11-18 1993-05-27 Älmhults Elektromekaniska Einar Andersson Ab Method and device for fragment separation
EP0579966A1 (de) * 1992-07-20 1994-01-26 Lindemann Maschinenfabrik GmbH Verfahren und Vorrichtung zum Abtrennen nichtmagnetisierbarer Metalle aus einem Gemisch
WO1997044137A1 (de) * 1996-05-17 1997-11-27 Hubertus Exner Vorrichtung und verfahren zur teilchenseparation mit einem rotierenden magnetsystem
WO1998029190A1 (en) * 1997-01-03 1998-07-09 Eriez Magnetics Europe Limited Powder separation
ES2182716A1 (es) * 2001-07-25 2003-03-01 Bagur Virginia Campins Separador magnetico de cuerpos metalicos no ferromagneticos.
EP1875967A1 (de) * 2005-04-28 2008-01-09 Hitachi, Ltd. Magnetabscheidungsreinigungsvorrichtung und magnetabscheidungsreinigungsverfahren
EP1985370A1 (de) 2007-04-27 2008-10-29 Andrin SA Sortiervorrichtung mit einem Magnetabscheider für nicht-eisenhaltige Metallteilchen und -stücke
EP2289628A1 (de) 2009-08-27 2011-03-02 Lux Magnet Wirbelstrom-Magnetabscheider mit optimierter Interaktionszone und Bewegungsbahn der Teilchen
FR2989288A1 (fr) * 2012-04-12 2013-10-18 Magpro Separateur par courant de foucault

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2827441B2 (ja) * 1990-04-20 1998-11-25 神鋼電機株式会社 非磁性金属分離ベルトコンベヤ
JPH081039A (ja) * 1994-06-24 1996-01-09 Nippon Jiryoku Senko Kk 磁力選別機
CN103008104A (zh) * 2011-09-22 2013-04-03 范翔生 一种废旧轮胎破碎颗粒除丝装置
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
CN106391528A (zh) * 2016-11-17 2017-02-15 无锡大功机械制造有限公司 一种污泥水的铁粉刮料装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR468901A (fr) * 1914-02-25 1914-07-20 Georges Casimir Hamel Appareil pour séparation électromagnétique des minerais à l'état sec ou en suspension dans les eaux de lavage
US3448857A (en) * 1966-10-24 1969-06-10 Eriez Magnetics Electrodynamic separator
SU1411039A1 (ru) * 1986-07-02 1988-07-23 Институт проблем комплексного освоения недр АН СССР Электродинамический сепаратор
EP0305881A1 (de) * 1987-09-04 1989-03-08 Huron Valley Steel Corporation Verfahren und Apparat zur Ausscheidung von Nichteisenmetall-Stücken
EP0339195A2 (de) * 1988-04-25 1989-11-02 Steinert Electromagnetbau GmbH Magnetscheider
EP0342330A2 (de) * 1988-05-19 1989-11-23 Lindemann Maschinenfabrik GmbH Vorrichtung zum Abtrennen von nichtmagnetisierbaren Metallen aus einer Feststoffmischung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR468901A (fr) * 1914-02-25 1914-07-20 Georges Casimir Hamel Appareil pour séparation électromagnétique des minerais à l'état sec ou en suspension dans les eaux de lavage
US3448857A (en) * 1966-10-24 1969-06-10 Eriez Magnetics Electrodynamic separator
SU1411039A1 (ru) * 1986-07-02 1988-07-23 Институт проблем комплексного освоения недр АН СССР Электродинамический сепаратор
EP0305881A1 (de) * 1987-09-04 1989-03-08 Huron Valley Steel Corporation Verfahren und Apparat zur Ausscheidung von Nichteisenmetall-Stücken
EP0339195A2 (de) * 1988-04-25 1989-11-02 Steinert Electromagnetbau GmbH Magnetscheider
EP0342330A2 (de) * 1988-05-19 1989-11-23 Lindemann Maschinenfabrik GmbH Vorrichtung zum Abtrennen von nichtmagnetisierbaren Metallen aus einer Feststoffmischung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, semaine 8905, 15 mars 1989, résumé no. 89-037702/05, Derwent Publications Ltd, Londres, GB; & SU-A-1 411 039 (ASCO) 23-07-1988 *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009873A1 (en) * 1991-11-18 1993-05-27 Älmhults Elektromekaniska Einar Andersson Ab Method and device for fragment separation
EP0579966A1 (de) * 1992-07-20 1994-01-26 Lindemann Maschinenfabrik GmbH Verfahren und Vorrichtung zum Abtrennen nichtmagnetisierbarer Metalle aus einem Gemisch
WO1997044137A1 (de) * 1996-05-17 1997-11-27 Hubertus Exner Vorrichtung und verfahren zur teilchenseparation mit einem rotierenden magnetsystem
US6230897B1 (en) * 1996-05-17 2001-05-15 Hubertus Exner Device and process for separating particles with a rotary magnet system
US6467629B1 (en) * 1996-05-17 2002-10-22 Hurbertus Exner Apparatus and method for separating particles with a rotating magnetic system
WO1998029190A1 (en) * 1997-01-03 1998-07-09 Eriez Magnetics Europe Limited Powder separation
ES2182716A1 (es) * 2001-07-25 2003-03-01 Bagur Virginia Campins Separador magnetico de cuerpos metalicos no ferromagneticos.
EP1875967A4 (de) * 2005-04-28 2010-04-14 Hitachi Ltd Magnetabscheidungsreinigungsvorrichtung und magnetabscheidungsreinigungsverfahren
EP1875967A1 (de) * 2005-04-28 2008-01-09 Hitachi, Ltd. Magnetabscheidungsreinigungsvorrichtung und magnetabscheidungsreinigungsverfahren
US7785475B2 (en) 2005-04-28 2010-08-31 Hitachi, Ltd. Magnetic separation purifying apparatus and magnetic separation purifying method
EP1985370A1 (de) 2007-04-27 2008-10-29 Andrin SA Sortiervorrichtung mit einem Magnetabscheider für nicht-eisenhaltige Metallteilchen und -stücke
FR2915407A1 (fr) * 2007-04-27 2008-10-31 Andrin Sa Sa Dispositif de tri comportant un separateur magnetique de particules et morceaux en metal non ferreux
EP2289628A1 (de) 2009-08-27 2011-03-02 Lux Magnet Wirbelstrom-Magnetabscheider mit optimierter Interaktionszone und Bewegungsbahn der Teilchen
EP2644277A2 (de) 2009-08-27 2013-10-02 Lux Magnet Wirbelstrom-Magnetabscheider mit optimierter Interaktionszone und Bewegungsbahn der Teilchen
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

Also Published As

Publication number Publication date
DE69006710T2 (de) 1994-07-07
FR2657544B1 (fr) 1992-04-17
EP0439983A3 (en) 1991-11-06
EP0439983B1 (de) 1994-02-16
ES2049957T3 (es) 1994-05-01
FR2657544A1 (fr) 1991-08-02
DE69006710D1 (de) 1994-03-24
JPH04215861A (ja) 1992-08-06

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