WO1989007981A1 - Methode et appareil de separation de fragments de materiaux metalliques non-magnetiques - Google Patents

Methode et appareil de separation de fragments de materiaux metalliques non-magnetiques Download PDF

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Publication number
WO1989007981A1
WO1989007981A1 PCT/SE1989/000096 SE8900096W WO8907981A1 WO 1989007981 A1 WO1989007981 A1 WO 1989007981A1 SE 8900096 W SE8900096 W SE 8900096W WO 8907981 A1 WO8907981 A1 WO 8907981A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
fragments
metallic materials
discharge unit
rotation
Prior art date
Application number
PCT/SE1989/000096
Other languages
English (en)
Inventor
Einar Andersson
Original Assignee
Älmhults Elektromekaniska Einar Andersson Ab
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 Älmhults Elektromekaniska Einar Andersson Ab filed Critical Älmhults Elektromekaniska Einar Andersson Ab
Publication of WO1989007981A1 publication Critical patent/WO1989007981A1/fr

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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
    • B03C1/23—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
    • B03C1/253—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 linear motor

Definitions

  • the present invention relates to a method for sepa ⁇ rating fragments of non-magnetic metallic materials, such as aluminium, zinc and copper, from a mixture of such fragments and fragments of non-metallic materials, such as stones, earth, glass and plastics.
  • the present invention also relates to an apparatus for carrying the method into effect.
  • fragmentation plants For the recovery of re-usable material, for example scrapped cars and all sorts of machines are broken up in so-called fragmentation plants where the scrap is disintegrated into fragments of different shapes and appearances, whereby a mixture of fragments of many different materials is obtained. Fragments of magnetic materials can be separated in a magnetic separator, and fragments of other materials can be separated in so-called flotation plants.
  • One object of this invention is to provide a method of effectively separating fragments of non-magnetic metallic materials from a mixture of fragments from which fragments of magnetic materials have been separated, for example in a magnetic separator, said method being especially effective in procuding fragments that are free from impurities.
  • This object is achieved, according to the invention, by means of a method which is of the type mentioned above and which is characterised in that the mixture of fragments is discharged from a discharge unit in such a manner that the fragments fall down towards a rotor unit comprising on the one hand a rotating rotor having a substantially horizontal shaft and juxtaposed and mutually spaced apart, axially extending permanent magnet bars of alternating polarity and, on the other hand, a baffle providing a mechanical screening between the rotor and the discharge unit, the fragments being made to fall down towards the rotor in a position which,. as seen in the direction of rotation of the rotor, is ahead of the highest point of the rotor.
  • a further object of the invention is to provide a simple apparatus for carrying the method into effect.
  • a rotor having a substantially horizontal shaft and juxta- posed and mutually spaced apart, axially extending perma ⁇ nent magnet bars of alternating polarity, a discharge unit adapted to discharge a mixture of fragments in such a manner that the fragments fall down towards the rotor in a position which, as seen in the direction of rotation of the rotor, is ahead of the highest point of the rotor, and a baffle providing a mechanical screening between the rotor and the discharge unit.
  • the baffle preferably is in the form of a cylinder surrounding the rotor and rotating in a direction opposite to the direction of rotation of the rotor.
  • Fig. 1 is a schematic lateral view illustrating a separating apparatus according to the invention.
  • Fig. 2 is an enlarged partial view illustrating a portion of the rotor of the separating apparatus.
  • the separating apparatus shown in Fig. 1 comprises a cylindrical rotor 1 having an outer shell 2 made of iron.
  • the rotor 1 has a horizontal shaft and is rotatable, via means not shown, in the direction of the arrow PI.
  • Axial grooves 3 extending along the entire length of the rotor 1 are formed at equidistant intervals in the shell 2 across the entire circumference thereof (and not only across a part thereof, as has been shown for the sake of simplicity in Fig. 1 ) .
  • Permanent magnet bars 4 of alternating polarity (N and S) are mounted in the grooves 3.
  • the magnets 4 are of the type also known _> as "supermagnets", in this instance the magnets which are being marketed under the tradena e Neodyir.iuir..
  • the magnet bars 4 which are rectangular in cross-section, are formed in their side portions with longitudinally extending grooves in which attachment plates 5 for mount ⁇ ing, the magnet bars on the rotor shell 2 are inserted.
  • Each attachment plate 5 is inserted in the grooves of two adjoining magnet bars 4 and are fixed to the rotor shell 2 by means of screws 6.
  • cylinder 7 coaxial with the rotor 1 surrounds the rotor to form a mechanical screening around the rotor.
  • the cylinder 7 is rotatable, via means nor shown, in the direction of the arrow P2 , i.e.
  • the cylinder 7 is made of stainless steel, but may of course be made of some other suitable material, such as plastics, glass fibres and the like, which is not subjected to inductive heating during rotation of the rotor 1.
  • a funnel-shaped discharge unit Above the rotor 1 , a funnel-shaped discharge unit
  • the discharge unit 8 is approximately in the twelve o'clock position.
  • the discharge unit 8 can be set at different "hours" and may be connected for this purpose with two arms (not shown) rotatable about the common axis of the rotor 1 and the cylinder 7.
  • the discharge unit 8 can be set at different positions between the ten o'clock position and the twelve o ' clock position. It should be noted that the discharge unit must always be set at a position such that the discharge therefrom will always occur ahead of the ten o'clock position.
  • the discharge unit 8 cooperates with a conveyor belt 9 conveying a mixture 10 of fragments of different types.
  • the mixture 10 of fragments may be obtained for example from a car fragmentation plant with which a magnetic separating plant is associated in which fragments. of magnetic materials are separated from the mixture.
  • Such a screening plant may, optionally, also be provided between the fragmentation plant and the conveyor belt 9.
  • the mixture 10 of fragments conveyed on the conveyor belt 9 to the discharge unit 8 contains fragments of non-magnetic metallic materials, such as aluminium, zinc and copper, and fragments of non-metallic materials, such as stones, earth, glass and plastics.
  • the mixture 10 of fragments conveyed on the conveyor belt 9 is made to fall down into the discharge unit 8 from which it falls down towards the rotor 1 rotating at high speed and the cylinder 7 rotating at low speed in the opposite direction, towards a position ahead of the twelve o'clock position.
  • Fragments 11 of non- metallic materials fall by gravity and, to some extent, by the assistance of the rotating cylinder 7 down to the left (Fig. 1) of the rotor 1 where they can be col ⁇ lected in a suitable receptacle (not shown).
  • fragments 12 of non-magnetic metallic materials are affected by the alternating field generated by the permanent magnet bars 4 on the rotating rotor 1 and are repelled a slight distance away from the rotor 1 and, at the same time, are carried along a distance in the direction of rotation of said rotor before they fall down to the right (Fig. 1) of the rotor 1 where they can be collected. In this manner- the fragments of the two different types of material are separated from one another.

Landscapes

  • Processing Of Solid Wastes (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Pour séparer des fragments (12) de matériaux métalliques non-magnétiques tels que l'aluminium, le zinc et le cuivre d'un mélange (10) de ces fragments (12) et de fragments (11) de matériaux non-métalliques tels que des pierres, de la terre, du verre et du plastique, ledit mélange (10) de fragments (11, 12) est déversé d'un tuyau (8) de façon que les fragments tombent dans un rotor rotatif (1, 7) qui comporte un rotor (1) ayant un arbre sensiblement horizontal et des barres aimantées fixes de polarité alternante s'étendant dans le sens axial (4), juxtaposés et espacés les unes des autres, d'une part, et un cylindre déviateur (7) constituant un écran mécanique entre le rotor (1) et le déchargeur (8), d'autre part. Les fragments (11, 12) tombent vers le rotor (1) dans une position qui, vue dans le sens de la rotation (P1), est située en avant du plus haut point du rotor.
PCT/SE1989/000096 1988-03-04 1989-03-03 Methode et appareil de separation de fragments de materiaux metalliques non-magnetiques WO1989007981A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8800770-3 1988-03-04
SE8800770A SE463243B (sv) 1988-03-04 1988-03-04 Saett och anordning att separera fragment av icke-magnetiska, metalliska material

Publications (1)

Publication Number Publication Date
WO1989007981A1 true WO1989007981A1 (fr) 1989-09-08

Family

ID=20371578

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1989/000096 WO1989007981A1 (fr) 1988-03-04 1989-03-03 Methode et appareil de separation de fragments de materiaux metalliques non-magnetiques

Country Status (4)

Country Link
EP (1) EP0403526A1 (fr)
AU (1) AU4073689A (fr)
SE (1) SE463243B (fr)
WO (1) WO1989007981A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5207330A (en) * 1991-11-01 1993-05-04 Miller Compressing Company Magnetic pulley
US5522513A (en) * 1994-03-30 1996-06-04 Howell; Billy R. Separator disc

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3448857A (en) * 1966-10-24 1969-06-10 Eriez Magnetics Electrodynamic separator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3448857A (en) * 1966-10-24 1969-06-10 Eriez Magnetics Electrodynamic separator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5207330A (en) * 1991-11-01 1993-05-04 Miller Compressing Company Magnetic pulley
US5522513A (en) * 1994-03-30 1996-06-04 Howell; Billy R. Separator disc

Also Published As

Publication number Publication date
SE8800770D0 (sv) 1988-03-04
AU4073689A (en) 1989-09-22
SE463243B (sv) 1990-10-29
EP0403526A1 (fr) 1990-12-27
SE8800770L (sv) 1989-09-05

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