EP1127622A2 - Magnetischer Abscheider mit niedriger Intensität - Google Patents

Magnetischer Abscheider mit niedriger Intensität Download PDF

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Publication number
EP1127622A2
EP1127622A2 EP01104607A EP01104607A EP1127622A2 EP 1127622 A2 EP1127622 A2 EP 1127622A2 EP 01104607 A EP01104607 A EP 01104607A EP 01104607 A EP01104607 A EP 01104607A EP 1127622 A2 EP1127622 A2 EP 1127622A2
Authority
EP
European Patent Office
Prior art keywords
tunnel
particles
magnetic
carrier
separator
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Withdrawn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
EP01104607A
Other languages
English (en)
French (fr)
Other versions
EP1127622A3 (de
Inventor
Joseph Boehm
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.)
Outokumpu Oyj
Original Assignee
Outokumpu Oyj
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 Outokumpu Oyj filed Critical Outokumpu Oyj
Publication of EP1127622A2 publication Critical patent/EP1127622A2/de
Publication of EP1127622A3 publication Critical patent/EP1127622A3/de
Withdrawn legal-status Critical Current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
    • B03C1/025—High gradient magnetic separators
    • B03C1/027—High gradient magnetic separators with reciprocating canisters

Definitions

  • This invention relates to the field of magnetic separation and more particularly, it relates to an apparatus for the separation of magnetizable particles from a mass of ore particles by the use of a low intensity magnetic field.
  • This invention provides an apparatus and a method for separating magnetic particles from a liquid or gaseous stream of particles passing through an enclosed housing wherein two opposed magnets, which might be permanent magnets, electromagnets, or super-conducting magnets, which maintain a low intensity magnetic field across the stream of particles.
  • the stream of particles to be separated passes through a series of filter elements as they pass into, through, and out of the magnetic field. At least two of these filter elements are arranged such that one is operational in actively collecting magnetic particles while the other is being cleansed of magnetic particles, as by backwashing, and made ready to be operational again.
  • the housing includes two steel cover plates spaced apart and parallel to each other so as to allow the filter elements to be moved into and out of a tunnel-like space between the plates. Magnetic power is produced across that tunnel space by magnets placed along the tunnel on both sides thereof.
  • the magnetic field strength of this separator is less or equal to 2 Tesla, and as such it is identified as a "low intensity" magnetic separator.
  • This invention deals with an apparatus and a method of using the apparatus to separate particles that are capable of being magnetized from a mass of particles in a continuously flowing liquid or gaseous stream.
  • the magnetizable particles in the fluid stream are passed through a magnetic field where these particles are trapped by a filter medium while the nonmagnetized particles pass on through in the stream to an exit for discharge or for further treatment.
  • the filter medium is full of trapped material and begins to show signs of being clogged and resistant to the flow of the fluid stream there through, the clogged filter is removed from the magnetic field and replaced by a clean filter medium and the separation process is resumed while the clogged filter is cleaned to recover the magnetized particles and to prepare the filter for another operational period when called upon to do so.
  • FIG. 1 of the attached drawings illustrates a typical apparatus for use in accomplishing the separation of this invention.
  • the central housing 10 of this invention includes two parallel plates 13 of magnetizable or magnetically permeable material, such as mild steel. This arrangement form a tunnel 28 through the center to receive filter elemtn carrier 11 movable there through.
  • magnets 12 i.e. permanent magnets, electromagnets, or super-conducting magnets.
  • Filter element carrier 11 in its simplest form is a long rectangular parallelepiped of nonmagnetizable material, e.g. copper, bronze, glass, plastic, or the like, with an internal space to hold two filter elements 20A and 20B, which might be fashioned with baffles and filled with steel wool so as to receive liquid or gaseous streams that will flow through, be dispersed throughout, and the solid magnetizable particles will be filtered therefrom.
  • Each filter element 20A of 20B is connected to its own inlet and outlet liquid or gas streams to be treated for the separation of magnetizable particles from the remainder of the streams.
  • Inlet stream 21B when filter 20B is located within tunnel 28, brings untreated material into element 20B and it eventually turns around at 23 and flows outwardly at 22B.
  • inlet stream 21A brings untreated material into element 20A and it turns around at 24 and flow outwardly at 22A.
  • the actual filtering operation functions only when respective element 20A or 20B is in the operative position of housing 10 to apply its full magnetic field on the passing stream, 21A or 21B. That position is shown in Fig. 1 for element 20A.
  • the inoperative position of element 20B in Fig. 1 is for the cleaning operation to be applied to element 20B.
  • Fig. 2 shows a side elevational view of the separator of this invention.
  • Separator housing 10 includes a tunnel 28 between cover plates 13 in which filter carrier element 11 moves reciprocally right or left to put a filter element 20A or 20B in the field of the magnets in housing 10 to effect a separation of magnetizable material from nonmagnetizable material.
  • Separating canister 25 separates the filtering operation on element 20A from that of element 20B.
  • Dummy canisters 26A and 26B merely separate filter elements 20A and 20B from any other items that may be in carrier 11 as it is moved to place filter elements 20A or 20B in or out of the magnetic field in housing 10. They also aid the smooth movement of the entire carrier 11.
  • the movement of carrier 11 reciprocally right of left may be controlled by any type of linear actuator 27.
  • Raw material for separation is provided by stream 21A into element 20A while it is in position in the magnetic field in housing 10.
  • the other filter element 20B is outside of the magnetic field and available for cleaning and rejuvenation so as to be available for reuse when needed and when element 20A is ready for cleaning.
  • linear actuator 27 for moving carrier 11 may be used in the separator illustrated in Fig. 1, and in addition, may alternatively be used to move housing 10 which would be highly unlikely with the separator of U.S. Patent No. 5,743,410.
  • Fig. 3 shows a cross-section of the magnetic field in housing 10.
  • Tunnel 28 is the guideway for containing carrier 11 as it relatively moves reciprocally in the direction into and out from the surface of Fig. 3 between cover plates 13 above and below tunnel 28; and also between rows of magnets 12 on either side of tunnel 28.
  • the magnetic field strength between plates 13 is approximately 0.5 Tesla.
  • electromagnets of super-conductive magnets are employed between cover-plates 13, in accord with other embodiments of the invention, the magnetic field strength is approximately 2 Tesla.
  • the type of separator disclosed in U.S. patent No. 5,743,410 relates more particularly to separators with field strengths above 5 Tesla and are considered to be high intensity in comparison to the low intensity type to which this invention applies.

Landscapes

  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filtering Materials (AREA)
EP01104607A 2000-02-23 2001-02-23 Magnetischer Abscheider mit niedriger Intensität Withdrawn EP1127622A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51158600A 2000-02-23 2000-02-23
US511586 2000-02-23

Publications (2)

Publication Number Publication Date
EP1127622A2 true EP1127622A2 (de) 2001-08-29
EP1127622A3 EP1127622A3 (de) 2002-07-10

Family

ID=24035540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01104607A Withdrawn EP1127622A3 (de) 2000-02-23 2001-02-23 Magnetischer Abscheider mit niedriger Intensität

Country Status (4)

Country Link
EP (1) EP1127622A3 (de)
AU (1) AU780530B2 (de)
BR (1) BR0100753A (de)
ZA (1) ZA200101210B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018024819A1 (en) * 2016-08-05 2018-02-08 Haute Ecole D'ingenierie Et De Gestion Du Canton De Vaud (Heig-Vd) Device for removing particles from a material in movement
CN113953085A (zh) * 2021-12-22 2022-01-21 潍坊新力超导磁电科技有限公司 一种低温超导磁选机的分选方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9309446D0 (en) * 1993-05-07 1993-06-23 Carpco Sms Ltd Improvements in and relating to super-conducting magnets
EP0920916A1 (de) * 1997-12-04 1999-06-09 Forschungszentrum Karlsruhe GmbH Hochgradienten-Magnetseparator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018024819A1 (en) * 2016-08-05 2018-02-08 Haute Ecole D'ingenierie Et De Gestion Du Canton De Vaud (Heig-Vd) Device for removing particles from a material in movement
CN113953085A (zh) * 2021-12-22 2022-01-21 潍坊新力超导磁电科技有限公司 一种低温超导磁选机的分选方法

Also Published As

Publication number Publication date
ZA200101210B (en) 2001-08-16
AU780530B2 (en) 2005-03-24
BR0100753A (pt) 2001-11-06
AU1675201A (en) 2001-08-30
EP1127622A3 (de) 2002-07-10

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