EP0106675A2 - Magnetische Abscheidung - Google Patents

Magnetische Abscheidung Download PDF

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Publication number
EP0106675A2
EP0106675A2 EP83306202A EP83306202A EP0106675A2 EP 0106675 A2 EP0106675 A2 EP 0106675A2 EP 83306202 A EP83306202 A EP 83306202A EP 83306202 A EP83306202 A EP 83306202A EP 0106675 A2 EP0106675 A2 EP 0106675A2
Authority
EP
European Patent Office
Prior art keywords
carrier surface
magnetic
sheet
carrier
spacing
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Withdrawn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
EP83306202A
Other languages
English (en)
French (fr)
Other versions
EP0106675A3 (de
Inventor
Isaac Yaniv
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.)
Edward Bateman L Ltd
Edward L Bateman Ltd
Original Assignee
Edward Bateman L Ltd
Edward L Bateman Ltd
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 Edward Bateman L Ltd, Edward L Bateman Ltd filed Critical Edward Bateman L Ltd
Publication of EP0106675A2 publication Critical patent/EP0106675A2/de
Publication of EP0106675A3 publication Critical patent/EP0106675A3/de
Withdrawn legal-status Critical Current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
    • 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
    • B03C1/12—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with magnets moving during operation; with movable pole pieces

Definitions

  • This invention relates to magnetic separation and particularly to the separation of ferromagnetic particles from a mixture of particles containing them.
  • a magnetic separator has already been proposed in which a roll carrying permanent magnets rotates in an envelope concentric with the roll.
  • the magnetic circuit is so arranged that as the roll rotates it carries with it zones of high magnetic gradients - see the complete specification of South African Patent No: 80/3785. This prior proposal has not proved to be very successful in practice.
  • An object of the invention is to provide a separation system which, it is expected, will be more successful.
  • a method of transporting ferromagnetic particles on a non-magnetic sheet against the action of gravity and inertia comprises the step of moving successive pairs of parallel bar magnets with opposed polarities facing the sheet behind the sheet, so that successive magnetic field lobes of substantially the same volume pass the same parallel lines on the sheet, with gaps between lobes composed of zones without any significant field gradients or field gradients substantially smaller than the gradients in the lobes.
  • the surface may be provided by a non-magnetic envelope and the bar magnets may be mounted on the surface of a drum parallel to the envelope. Preferably pairs of bar magnets are mounted to the drum surface on soft iron yokes.
  • each pair of bar magnets is flanked by pairs in which the polarities are switched. Also it is preferred that the spacing between pairs be at least equal to the spacing between magnets in a pair and preferably about 2.5 times that spacing.
  • the roll shown in Figure 1 comprises a mild steel drum 10 mounted on a shaft 11 which is journalled for rotation and connected to suitable motion transmission means to cause the drum 10 to rotate.
  • the bar magnets are samarium-cobalt magnets, which are preferred due to their low mass. Barium ferrite magnets can also be used.
  • the bar magnets have been mounted in pairs with the members of a pair marked 13 and 14.
  • the magnets 13 are so magnetised that their radially outermost faces are North poles while the magnets 14 have South poles as their radially outermost faces.
  • the angle between pairs of magnets 13 and 14 at the centre of the drum 10 is 30° while the angle between adjacent pairs of magnets 14 or 13 is 60°.
  • FIG. 2 A typical application of the roll of Figure 1 is shown in Figure 2.
  • a dry powdery mixture containing ferromgnet particles is treated for the removal or recovery of the ferromagnetic particles.
  • the drum 10 is surrounded by an envelope 20 of non-magnetic material, e.g. fabricated from a sheet of stainless steel.
  • the mixture to be treated is fed on to a plate 21 so that the mixture slides past the envelope 20.
  • Non-magnetics fall under the action of gravity while ferromagnetic particles are transported along the surface of the envelope 20.
  • Weakly ferromagnetic particles fall between splitters 23 and 24 while the strongly ferromagnetic particles fall beyond the splitter 24.

Landscapes

  • Sorting Of Articles (AREA)
  • Centrifugal Separators (AREA)
EP83306202A 1982-10-13 1983-10-13 Magnetische Abscheidung Withdrawn EP0106675A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA827484 1982-10-13
ZA827484 1982-10-13

Publications (2)

Publication Number Publication Date
EP0106675A2 true EP0106675A2 (de) 1984-04-25
EP0106675A3 EP0106675A3 (de) 1985-03-06

Family

ID=25576318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83306202A Withdrawn EP0106675A3 (de) 1982-10-13 1983-10-13 Magnetische Abscheidung

Country Status (2)

Country Link
EP (1) EP0106675A3 (de)
AU (1) AU1799783A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5057210A (en) * 1989-03-01 1991-10-15 Lindemann Maschinenfabrik Gmbh Apparatus for separating non-magnetizable metals from a solid mixture
WO1998029190A1 (en) * 1997-01-03 1998-07-09 Eriez Magnetics Europe Limited Powder separation
WO2005120714A1 (en) * 2004-06-07 2005-12-22 Sgm Gantry S.P.A. Magnetic separator for ferromagnetic materials with controlled-slip rotating roller and relevant operating method
EP2289628A1 (de) * 2009-08-27 2011-03-02 Lux Magnet Wirbelstrom-Magnetabscheider mit optimierter Interaktionszone und Bewegungsbahn der Teilchen
JP2014087800A (ja) * 2014-02-18 2014-05-15 Hitachi Ltd 磁気分離装置及び廃水処理装置
JP2017131869A (ja) * 2016-01-29 2017-08-03 Ｊｆｅスチール株式会社 磁力選別装置および磁力選別方法
EP3349908A4 (de) * 2015-09-16 2019-07-31 Phillip Island Nature Park Board Of Management Inc Vorrichtung und verfahren zum entfernen von unerwünschtem material
CN112844826A (zh) * 2021-02-25 2021-05-28 迁安市中润工贸有限公司 一种磁选机及应用该磁选机的选铁工艺

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939580A (en) * 1957-05-27 1960-06-07 Carpenter James Hall Magnetic ore separator

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5057210A (en) * 1989-03-01 1991-10-15 Lindemann Maschinenfabrik Gmbh Apparatus for separating non-magnetizable metals from a solid mixture
WO1998029190A1 (en) * 1997-01-03 1998-07-09 Eriez Magnetics Europe Limited Powder separation
WO2005120714A1 (en) * 2004-06-07 2005-12-22 Sgm Gantry S.P.A. Magnetic separator for ferromagnetic materials with controlled-slip rotating roller and relevant operating method
AU2004320545B2 (en) * 2004-06-07 2011-03-03 Sgm Gantry S.P.A. Magnetic separator for ferromagnetic materials with controlled-slip rotating roller and relevant operating method
US8056730B2 (en) 2004-06-07 2011-11-15 Sgm Gantry S.P.A. Magnetic separator for ferromagnetic materials with controlled-slip rotating roller and relevant operating methods
EP2289628A1 (de) * 2009-08-27 2011-03-02 Lux Magnet Wirbelstrom-Magnetabscheider mit optimierter Interaktionszone und Bewegungsbahn der Teilchen
EP2644277A3 (de) * 2009-08-27 2014-03-05 Lux Magnet Wirbelstrom-Magnetabscheider mit optimierter Interaktionszone und Bewegungsbahn der Teilchen
JP2014087800A (ja) * 2014-02-18 2014-05-15 Hitachi Ltd 磁気分離装置及び廃水処理装置
EP3349908A4 (de) * 2015-09-16 2019-07-31 Phillip Island Nature Park Board Of Management Inc Vorrichtung und verfahren zum entfernen von unerwünschtem material
JP2017131869A (ja) * 2016-01-29 2017-08-03 Ｊｆｅスチール株式会社 磁力選別装置および磁力選別方法
CN112844826A (zh) * 2021-02-25 2021-05-28 迁安市中润工贸有限公司 一种磁选机及应用该磁选机的选铁工艺

Also Published As

Publication number Publication date
AU1799783A (en) 1984-04-19
EP0106675A3 (de) 1985-03-06

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

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AK Designated contracting states

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

PUAL Search report despatched

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18D Application deemed to be withdrawn

Effective date: 19851107

RIN1 Information on inventor provided before grant (corrected)

Inventor name: YANIV, ISAAC