EP0729789A1 - Séparateur magnétique - Google Patents

Séparateur magnétique Download PDF

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Publication number
EP0729789A1
EP0729789A1 EP96890027A EP96890027A EP0729789A1 EP 0729789 A1 EP0729789 A1 EP 0729789A1 EP 96890027 A EP96890027 A EP 96890027A EP 96890027 A EP96890027 A EP 96890027A EP 0729789 A1 EP0729789 A1 EP 0729789A1
Authority
EP
European Patent Office
Prior art keywords
drum
cutting plate
magnetic
plate
porous
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.)
Withdrawn
Application number
EP96890027A
Other languages
German (de)
English (en)
Inventor
Leander Ahorner
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.)
IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft
IFE GmbH
Original Assignee
IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft
IFE 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 IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft, IFE GmbH filed Critical IFE Industrie-Einrichtungen Fertigungs-Aktiengesellschaft
Priority to DE29618436U priority Critical patent/DE29618436U1/de
Publication of EP0729789A1 publication Critical patent/EP0729789A1/fr
Withdrawn legal-status Critical Current

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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
    • B03C1/04—Magnetic separation acting directly on the substance being separated with the material carriers in the form of trays or with tables
    • 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
    • B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
    • B03C1/14—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with non-movable magnets

Definitions

  • the invention relates to a magnetic separator with an inclined and / or curved cutting plate, to which the material to be separated is applied and through which a magnetic flux is maintained in order to separate the magnetic material from the non-magnetic.
  • the cutting plate is a drum, possibly rotatable about a horizontal axis, inside which there is a fixed magnet system, which causes the magnetic flux through part of the circumference of the drum, and has a feed device which essentially separates the material to be separated applies the highest point of the drum casing.
  • an electric or permanent magnet is accommodated in the interior of the drum in such a way that magnetic forces act, for example, from the area of the drum apex to the lower area of the drum, through which the magnetic material is separated.
  • the good consists of granular or lumpy material that is partly magnetic (actually: magnetizable) and partly non-magnetic (actually: not magnetizable).
  • the magnetic particles adhere to the rotating drum due to the magnetic field generated in the drum and do not fall off the drum until after the rotation they have reached the point at which the magnetic influence has essentially disappeared.
  • the non-magnetic particles are naturally not influenced by the magnetic field and fall off the drum when they reach the underside of the drum.
  • the vagina plate can also be a flat structure such as tape, belt, cloth or the like. be that is moved substantially transversely to the direction of movement of the goods, so that the magnetic part of the goods is taken off the conveyor belt and thus separated.
  • the object of the invention is to create a magnetic separator which is particularly suitable for fine-grained and powder-like material and which also achieves good results with such difficult-to-separate materials.
  • the desired goals are achieved in that the cutting plate is made of porous material and that air is blown through the cutting plate towards the material.
  • This combination of measures ensures that the material hitting the cutting plate cannot adhere to the cutting plate but is fluidized.
  • the magnetic particles are easily and reliably drawn to the surface of the wing and held there against the forces of the air flow, while the non-magnetizable particles slide just as reliably over the cutting plate and, in the case of a drum separator, fall off when they do get into the overhanging area of the drum surface without sticking to the surface or even baking.
  • Cutting plates according to the invention can consist, for example, of sintered bronze, ceramic or porous plastics and can be produced by sintering or casting. It is essential that a large number of fine pores is preferred with a pore size of 5 - 200 ⁇ m, because in this way the formation of non-porous areas, to which non-magnetic material could stick again, is avoided, as well as the formation of areas with excessive flow, in which could also remove magnetic particles from the cutting plate too soon due to the air flow.
  • the feed device for the drum separator also has a zone with a cutting plate according to the invention in its end region, which, viewed in the direction of good transport, is arranged directly in front of the drum in which the transported goods are fluidized and loosened by blowing air through the pores of the cutting plate, which forms the bottom of the transport device.
  • a rotatable drum T is shown, on the upper vertex area 2 granular material is applied, which is partly magnetic and partly non-magnetic Particles.
  • the feed device shown consists of a slide 3 and a baffle 4.
  • a magnet system 5 is provided in the interior of the drum T and is stationary and extends essentially over a half of the drum from the top to the bottom.
  • This magnet system can consist of permanent or electromagnets and has the task of creating a magnetic flux through the drum surface in the area in which the material to be separated co-rotates with the drum, by means of which the magnetic particles are held on the drum surface.
  • the non-magnetic material 6 leaves the drum in the area in which the possible holding forces of the drum are overcome by the combination of centrifugal force and gravity, for example in the area in which the overhang of the drum shell begins, so that with "good-natured" materials there is a dropping image, as shown in FIG. 1.
  • the non-magnetic material now adheres so firmly to the drum surface that it likewise only falls off in the lowest region of the drum or beyond this region, and on the other hand magnetic particles which do not because of the layer adhering to the drum get close enough to the drum surface, are already deposited with parts of the non-magnetic material, so that too 8 magnetic and non-magnetic particles with insufficient selectivity are present on both sides of the separating chute.
  • FIG. 2 shows a magnetic drum according to the invention, which essentially corresponds to the structure of FIG. 1.
  • drum shell 1 is made of porous material and that an excess pressure is maintained inside the drum by the supply of compressed air by means of an air supply 15, through which air continuously flows through the porous drum shell, as indicated by the arrows L is indicated in Fig. 2 in some circumferential areas.
  • FIG. 2 also shows a feed device 9, which in the example shown is an oscillating conveyor.
  • the vibrations loosen the material to be separated, which is further reinforced in the end region 10 of the vibratory conveyor 9 by the following measure according to the invention: in the end region 10, the bottom 11 of the vibratory conveyor has a fluidizing plate 16 which, like the cutting plate 13 according to the invention, is porous and, for example consists of the same material as the drum shell 1.
  • a wind box 12 to which compressed air is supplied, is arranged below the fluidizing plate 16.
  • the resulting overpressure in the wind box 12 creates a permanent air flow through the fluidizing plate 16, as indicated by the arrows L in this area, as a result of which it is already on the product before it hits it Magnet drum comes to an intensive loosening and fluidization of the goods.
  • a cutting plate 13 according to the invention is tightly connected to a permanent magnet all around to allow air to be blown into the area between the magnets and the cutting plate, so that the magnet forms the walls of a wind box.
  • the cutting plate can be pivoted about an axis 14.
  • the invention is not limited to the example shown, but can be modified in various ways. It has been shown that for different types of goods or mixtures, the measure according to the invention does not require the drum to be rotated, since the non-magnetic material glides over the stationary drum surface and falls off in the area of the beginning overhang, while the magnetic material along the Drum surface slides and only drops in the area of the end of the magnet device 5.
  • the size of the pores and the selected material can easily be determined by a person skilled in the art knowing the invention and the envisaged field of application.
  • Sintered materials are preferred because of their extremely fine pore structure and high porosity. Whether it is sintered metal or sintered ceramic materials depends on their magnetic and mechanical properties.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
EP96890027A 1995-02-28 1996-02-28 Séparateur magnétique Withdrawn EP0729789A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29618436U DE29618436U1 (de) 1996-02-28 1996-02-28 Magnetscheider

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT36295 1995-02-28
AT362/95 1995-02-28

Publications (1)

Publication Number Publication Date
EP0729789A1 true EP0729789A1 (fr) 1996-09-04

Family

ID=3488597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96890027A Withdrawn EP0729789A1 (fr) 1995-02-28 1996-02-28 Séparateur magnétique

Country Status (5)

Country Link
EP (1) EP0729789A1 (fr)
AT (1) AT1881U1 (fr)
FI (1) FI960911A (fr)
IL (1) IL117263A0 (fr)
TR (1) TR199600147A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104084295A (zh) * 2014-06-10 2014-10-08 灌阳县陈工选矿机械制造有限公司 一种磁选矿机的磁选筒
CN108554626A (zh) * 2018-04-10 2018-09-21 山东钢铁股份有限公司 高炉水渣除铁装置
CN108745640A (zh) * 2018-06-14 2018-11-06 中国地质科学院郑州矿产综合利用研究所 磁性矿物的梯度磁重离心筛选溜槽、设备及方法
CN110339941A (zh) * 2019-07-24 2019-10-18 中南大学 一种紊流平板式磁选机
WO2020188459A1 (fr) * 2019-03-19 2020-09-24 FLANAGAN, Rory Michael Processus et ensemble d'alimentation en matériau pour un séparateur magnétique rotatif
CN112657868A (zh) * 2020-12-24 2021-04-16 合肥泰禾智能科技集团股份有限公司 一种用于色选机磁选去铁的机械结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108787045B (zh) * 2018-08-01 2023-12-12 河南黎明重工科技股份有限公司 一种流化功能的立磨进料溜槽装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE272273C (fr) *
DE826889C (de) * 1949-07-07 1952-01-07 Johannes Krause Dipl Ing Magnetscheidung und Trommelmagnetscheider

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE272273C (fr) *
DE826889C (de) * 1949-07-07 1952-01-07 Johannes Krause Dipl Ing Magnetscheidung und Trommelmagnetscheider

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104084295A (zh) * 2014-06-10 2014-10-08 灌阳县陈工选矿机械制造有限公司 一种磁选矿机的磁选筒
CN108554626A (zh) * 2018-04-10 2018-09-21 山东钢铁股份有限公司 高炉水渣除铁装置
CN108745640A (zh) * 2018-06-14 2018-11-06 中国地质科学院郑州矿产综合利用研究所 磁性矿物的梯度磁重离心筛选溜槽、设备及方法
CN108745640B (zh) * 2018-06-14 2024-01-09 中国地质科学院郑州矿产综合利用研究所 磁性矿物的梯度磁重离心筛选溜槽、设备及方法
WO2020188459A1 (fr) * 2019-03-19 2020-09-24 FLANAGAN, Rory Michael Processus et ensemble d'alimentation en matériau pour un séparateur magnétique rotatif
CN110339941A (zh) * 2019-07-24 2019-10-18 中南大学 一种紊流平板式磁选机
CN110339941B (zh) * 2019-07-24 2021-01-08 中南大学 一种紊流平板式磁选机
CN112657868A (zh) * 2020-12-24 2021-04-16 合肥泰禾智能科技集团股份有限公司 一种用于色选机磁选去铁的机械结构

Also Published As

Publication number Publication date
FI960911A (fi) 1996-08-29
FI960911A0 (fi) 1996-02-27
IL117263A0 (en) 1996-06-18
TR199600147A1 (tr) 1997-03-21
AT1881U1 (de) 1998-01-26

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