EP0162834A2 - Séparateur magnétique - Google Patents

Séparateur magnétique Download PDF

Info

Publication number: EP0162834A2
Authority: EP; European Patent Office
Prior art keywords: magnetic; volume; force; magnetic separator; coils
Prior art date: 1984-05-22
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

EP85890117A

Other languages

German (de)

English (en)

Other versions

EP0162834A3 (en

EP0162834B1 (fr

Inventor

Harald Dipl.-Ing. Fillunger

Stephan Dr. Gründorfer

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.)

Andritz Hydro GmbH Austria

Original Assignee

Andritz Hydro GmbH Austria

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.)

1984-05-22

Filing date

1985-05-21

Publication date

1985-11-27

1985-05-21 Application filed by Andritz Hydro GmbH Austria filed Critical Andritz Hydro GmbH Austria

1985-11-27 Publication of EP0162834A2 publication Critical patent/EP0162834A2/fr

1986-02-19 Publication of EP0162834A3 publication Critical patent/EP0162834A3/de

1988-07-27 Application granted granted Critical

1988-07-27 Publication of EP0162834B1 publication Critical patent/EP0162834B1/fr

Status Expired legal-status Critical Current

Links

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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
- B03C1/035—Open gradient magnetic separators, i.e. separators in which the gap is unobstructed, characterised by the configuration of the gap

Definitions

the invention relates to a magnetic separator.
a magnetic separator Preferably for a coil arrangement that is suitable for isodynamic magnetic separators for high throughput.
the magnetic separators used industrially today are generally well suited to separating materials with ferromagnetic or strongly paramagnetic properties from other materials with diamagnetic or weakly paramagnetic properties. A separation of materials with only slight differences in their paramagnetic properties is only possible in some magnetic separators that are suitable for laboratory purposes.
gravity is used as counterforce, which is why it is required that the cutting force density f should be constant over the cutting volume.
the magnetic field that fulfills these conditions is referred to in this publication as an isodynamic magnetic field.
Such a magnetic field is approximated by a specially shaped magnetic pole contour of an electromagnet with an iron yoke. If you want to use a different quantity as the counterforce, such as centrifugal force, the density of the separation force f must have the same spatial distribution as the counterforce.
the level of magnetic induction is essentially limited to the saturation induction of the iron yoke.
the greatest possible density of the cutting force is defined. If greater cutting force densities are necessary, the maximum magnetic induction must be increased if the geometry remains the same, or the geometric dimension must be reduced if the maximum induction remains the same.
the object of the invention is to provide a magnetic separator which avoids the disadvantages of the above-mentioned magnetic fields and generates a magnetic field in which, for a certain volume acceptability, the generated separating force is adapted to a corresponding counterforce without being limited by the saturation induction of an iron yoke.
the magnetic separator according to the invention is characterized in that the magnetic field, which generates the force density in the separating volume which is necessary for the separation with high selectivity and is adapted to the counterforce, is largely induced by the shape and position of the excitation coils.
the magnetic field is induced by rotationally symmetrical coils, which are arranged symmetrically to the cutting volume and flow through current in opposite directions with respect to the plane of symmetry and comprise the cutting volume and the radius of the center of the cutting volume is smaller than the largest radius of the excitation coils, but larger than the smallest radius of the excitation coils.
the magnetic field is induced by elongated coils, the long sides of the coil being arranged symmetrically to a plane of symmetry and comprising the sheath volume arranged symmetrically to the plane of symmetry.
excitation coils are made of normally conductive material. This version is sufficient for certain vaginal problems. It is an economically viable solution.
the excitation coils are made from superconductors. Weakly magnetic materials can only be separated using magnetic fields that can be generated from superconductors
one or more iron cores or iron yokes are provided to increase the magnetic induction or to reduce the number of ampere turns.
one or more iron yokes or a normally conducting or a superconducting surface are provided for shielding the magnetic field.
a rotationally symmetrical excitation coil arrangement is shown in the figure, 1 denoting the axis of rotation and 2 denoting the plane of symmetry.
the entire magnetic flux of the upper and the lower two coils between the coil pairs 3, 5 and 4, 6 is pushed through and thereby generates an approximately constant cutting force density in the annular channel-shaped cutting volume 7.
the counterforce is the centrifugal force which acts in the annular channel-shaped partition volume 7 on the particles moving at the transport speed.
the magnetic separation force density exerts on the different material particles a different force.
This magnetic force competes with the counterforce, which is approximately the same for all particles.
the counterforce is a superimposition of the drag forces in the carrier fluid with the force of gravity.
the parting volume comes to lie between the excitation coils.
the desired constancy of the cutting force density over the cutting volume or the desired adaptation to the spatially variable counterforce can be achieved with a coil pair with a non-rectangular cross section or with several coil pairs with a rectangular cross section.
the desired constancy of the cutting force density can be achieved via the cutting volume or the desired adaptation to the spatially variable counterforce.

Landscapes

Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Soft Magnetic Materials (AREA)

EP19850890117 1984-05-22 1985-05-21 Séparateur magnétique Expired EP0162834B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
AT1684/84		1984-05-22
AT0168484A AT379525B (de)	1984-05-22	1984-05-22	Magnetscheider

Publications (3)

Publication Number	Publication Date
EP0162834A2 true EP0162834A2 (fr)	1985-11-27
EP0162834A3 EP0162834A3 (en)	1986-02-19
EP0162834B1 EP0162834B1 (fr)	1988-07-27

Family

ID=3518753

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19850890117 Expired EP0162834B1 (fr)	1984-05-22	1985-05-21	Séparateur magnétique

Country Status (3)

Country	Link
EP (1)	EP0162834B1 (fr)
AT (1)	AT379525B (fr)
DE (1)	DE3563916D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1990004458A1 (fr) *	1988-10-25	1990-05-03	Elin Energieanwendung Gesellschaft M.B.H.	Separateur magnetique a gradient ouvert

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT400779B (de) *	1989-07-19	1996-03-25	Gerhold Juergen Dipl Ing Dr Te	Magnetsystem
AT393463B (de) *	1990-07-13	1991-10-25	Elin Energieanwendung	Isodynamischer trennkanalmagnetscheider

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2157217A1 (de) *	1971-11-18	1973-05-24	Preussag Ag	Magnetscheider
CH565594A5 (fr) *	1973-12-07	1975-08-29	Bbc Brown Boveri & Cie
DE2650528A1 (de) *	1976-11-04	1978-05-18	Kloeckner Humboldt Deutz Ag	Magnetscheider
GB2064377B (en) *	1979-10-12	1984-03-21	Imperial College	Magnetic separators
US4340468A (en) *	1980-11-06	1982-07-20	The United States Of America As Represented By The United States Department Of Energy	Method and apparatus for separating materials magnetically

1984
- 1984-05-22 AT AT0168484A patent/AT379525B/de not_active IP Right Cessation
1985
- 1985-05-21 DE DE8585890117T patent/DE3563916D1/de not_active Expired
- 1985-05-21 EP EP19850890117 patent/EP0162834B1/fr not_active Expired

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1990004458A1 (fr) *	1988-10-25	1990-05-03	Elin Energieanwendung Gesellschaft M.B.H.	Separateur magnetique a gradient ouvert

Also Published As

Publication number	Publication date
AT379525B (de)	1986-01-27
EP0162834A3 (en)	1986-02-19
EP0162834B1 (fr)	1988-07-27
ATA168484A (de)	1985-06-15
DE3563916D1 (en)	1988-09-01

Legal Events

Date	Code	Title	Description
1985-09-27	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1985-11-27	AK	Designated contracting states	Designated state(s): BE CH DE FR GB LI NL
1985-12-16	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1986-02-19	AK	Designated contracting states	Designated state(s): BE CH DE FR GB LI NL
1986-08-20	17P	Request for examination filed	Effective date: 19860613
1987-06-16	17Q	First examination report despatched	Effective date: 19870429
1988-06-11	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1988-07-27	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): BE CH DE FR GB LI NL
1988-09-01	REF	Corresponds to:	Ref document number: 3563916 Country of ref document: DE Date of ref document: 19880901
1988-10-14	ET	Fr: translation filed
1988-11-16	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1989-05-25	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1989-05-25	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1989-07-12	26N	No opposition filed
1990-04-19	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: CH Payment date: 19900419 Year of fee payment: 6
1990-04-26	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19900426 Year of fee payment: 6
1990-05-03	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: BE Payment date: 19900503 Year of fee payment: 6
1990-05-09	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19900509 Year of fee payment: 6
1990-05-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 19900531 Year of fee payment: 6
1990-07-06	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19900706 Year of fee payment: 6
1991-05-21	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Effective date: 19910521
1991-05-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LI Effective date: 19910531 Ref country code: CH Effective date: 19910531 Ref country code: BE Effective date: 19910531
1991-11-30	BERE	Be: lapsed	Owner name: ELIN-UNION A.G. FUR ELEKTRISCHE INDUSTRIE Effective date: 19910531
1991-12-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Effective date: 19911201
1992-01-15	GBPC	Gb: european patent ceased through non-payment of renewal fee
1992-01-16	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee
1992-01-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Effective date: 19920131
1992-01-31	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
1992-03-03	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Effective date: 19920303
1992-03-27	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST

Publication	Publication Date	Title
EP0111825B1 (fr)	1986-03-19	Dispositif pour la technique de séparation magnétique à gradients forts en vue de séparer des particules magnétisables
DE2659254A1 (de)	1977-06-30	Verfahren und vorrichtung zum trennen von teilchen unterschiedlicher dichte mit magnetischen fluiden
EP0050281B1 (fr)	1985-05-22	Dispositif de séparation pour la technique de séparation à gradients magnétiques élevés
DE2628095B2 (de)	1980-11-20	Magnetische Abscheidevorrichtung
DE2307273A1 (de)	1974-09-05	Supraleitender magnetausscheider
DE2650540C3 (de)	1981-05-27	Starkfeld-Trommelmagnetscheider
DE2929468C2 (fr)	1987-08-06
EP0162834B1 (fr)	1988-07-27	Séparateur magnétique
DE2856782C2 (fr)	1991-03-07
DE60308122T2 (de)	2007-03-29	Gradientenspulenstruktur für Kernspintomographie
US4608155A (en)	1986-08-26	Magnetic separator
DE3827252C2 (fr)	1990-11-22
DE2852565A1 (de)	1979-10-31	Geophon mit einer dauermagnet-anordnung
AT391280B (de)	1990-09-10	Magnetscheider ii
DE3247557C2 (de)	1985-12-19	Vorrichtung zur Hochgradienten-Magnetseparation
WO1990004458A1 (fr)	1990-05-03	Separateur magnetique a gradient ouvert
DE2461760C3 (de)	1979-02-22	Freifall-Magnetscheider
DE2832275C2 (de)	1980-09-25	Magnetscheider
DE2738649A1 (de)	1979-03-08	Vorrichtung fuer filtereinrichtungen zur abscheidung feinster magnetisierbarer teilchen
DE10355460A1 (de)	2005-06-30	Mikrofluidsystem
DE1017102B (de)	1957-10-10	Verfahren und Vorrichtung zum Nassklassieren und/oder -sortieren von grob- bis feinkoernigen Mineralien oder sonstigen Feststoffen
DE3131480C2 (fr)	1992-01-30
AT124505B (de)	1931-09-25	Verfahren und Vorrichtung zum Trennen von Materialien mit verschiedenen physikalischen Eigenschaften.
DE2401026A1 (de)	1975-06-12	Verfahren zur magnetscheidung schwach magnetisierbarer stoffe
DE2428273C3 (de)	1978-03-02	Magnetschneider zum Sortieren von Stoff gemischen

EP0162834A2 - Séparateur magnétique - Google Patents

Info

Links

Images

Classifications

Definitions

Landscapes

Applications Claiming Priority (2)

Publications (3)

Family

ID=3518753

Family Applications (1)

Country Status (3)

Cited By (1)

Families Citing this family (2)

Family Cites Families (5)

Cited By (1)

Also Published As

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