EP0050281A1 - Dispositif de séparation pour la technique de séparation à gradients magnétiques élevés - Google Patents
Dispositif de séparation pour la technique de séparation à gradients magnétiques élevés Download PDFInfo
- Publication number
- EP0050281A1 EP0050281A1 EP81108146A EP81108146A EP0050281A1 EP 0050281 A1 EP0050281 A1 EP 0050281A1 EP 81108146 A EP81108146 A EP 81108146A EP 81108146 A EP81108146 A EP 81108146A EP 0050281 A1 EP0050281 A1 EP 0050281A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter structure
- medium
- magnetic field
- magnetic
- guiding elements
- 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.)
- Granted
Links
- 238000000926 separation method Methods 0.000 title claims abstract description 10
- 238000007885 magnetic separation Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title 1
- 230000005291 magnetic effect Effects 0.000 claims abstract description 55
- 239000003302 ferromagnetic material Substances 0.000 claims abstract description 15
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 230000006698 induction Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000005298 paramagnetic effect Effects 0.000 description 3
- 230000005290 antiferromagnetic effect Effects 0.000 description 2
- 230000009972 noncorrosive effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
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
- B03C1/025—High gradient magnetic separators
- B03C1/031—Component parts; Auxiliary operations
- B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
- B03C1/0335—Component parts; Auxiliary operations characterised by the magnetic circuit using coils
Definitions
- the invention relates to a device for separating magnetizable particles down to particle sizes below 1 / um according to the principle of high gradient magnetic separation technology from a flowing medium with a filter structure arranged in a filter space, the parts of the two magnetic poles forming a ferromagnetic yoke Magnet device is arranged in an essentially parallel or antiparallel to the direction of flow of the medium in the area of the filter structure and the plurality of at least approximately perpendicular to the direction of flow of the medium and viewed in the direction of flow closely arranged behind one another wire networks made of non-corrosive, ferromagnetic material with a predetermined mesh size and thickness of their wires.
- a magnetic separator is known from DE-OS 26 28 095.
- Magnetic deposition processes take advantage of the fact that in a suitable magnetic field arrangement a magnetizable particle experiences a force that moves or holds it against other forces acting on it, such as gravity or in a liquid medium against hydrodynamic frictional forces.
- Such separation processes are intended, for example, for steam or cooling water circuits in conventional as well as in nuclear power plants.
- the liquid or gaseous medium of these circuits has suspended particles which have generally arisen from corrosion.
- These particles are partly ferromagnetic, such as magnetite (Fe 3 0 4 ), partly antiferromagnetic, such as hematite ( ⁇ -Fe 2 O 3 ) or paramagnetic, such as copper oxide (Cu0).
- the magnetizability of these particles which also occur in different sizes, is therefore of different strength.
- HGM technology high gradient magnetic separation technology
- a corresponding HGM separator can also be found in DE-OS 26 28 095. It contains a central filter space with a filter structure made up of a plurality of wire meshes arranged closely one behind the other in the direction of flow, which are arranged perpendicular to the direction of flow of the medium in a relatively strong magnetic field. This magnetic field is directed parallel or antiparallel to the direction of flow of the medium in the area of the filter structure and causes, for example, a magnetic induction in the order of 1 Tesla.
- the thickness of the wires of the networks made of ferromagnetic material is very small and is, for example, less than 0.1 mm. The one on them The generated magnetic field gradients are consequently very high, so that even weakly magnetizable particles can be filtered out with the separating device.
- the central filter chamber of the known separating device in which the filter structure from the wire nets is located, is arranged between the ends of two pole shoes, which are parts of a yoke body made of ferromagnetic material, which serves to guide the magnetic field caused by a magnetic coil.
- the medium to be filtered is fed into or out of the filter space either through bores in these pole pieces or through a gap remaining between the pole pieces via annular chambers.
- the advantages of the separating device achieved with these measures are, in particular, that the medium to be filtered is distributed relatively uniformly over the cross section of the filter structure into the structure at not too high a speed, since only relatively short distances between the individual magnetic field-guiding elements are given at the filter inlet.
- these elements advantageously couple the magnetic field directly to the filter structure without the need for relatively long bores through pole shoes, which can only be produced at a correspondingly high cost.
- FIG. 1 of which a separating device according to the invention is illustrated.
- 2 and 3 show designs of magnetic field-guiding elements of this device, while FIGS. 4 and 5 show a further separating device according to the invention.
- a magnetic separation device of the high gradient magnetic separation technology is schematically indicated as a longitudinal section.
- the smallest ferromagnetic particles with particle sizes below 1 / um or weakly magnetic, for example paramagnetic or antiferromagnetic, particles with a relatively high degree of separation be filtered out from a liquid medium.
- Components of this separating device which are not shown in the figure can be, for example, corresponding components of the device known from DE-OS 26 28 095.
- the separating device contains a yoke body made of magnetic iron which is rotationally symmetrical with respect to an axis 3 and which is composed of a tubular yoke cylinder 4 and two end-side circular disk-shaped yoke plates 5 and 6.
- the yoke cylinder encloses a hollow cylindrical magnet coil 7, for example a copper solenoid, which can be forcedly cooled if necessary.
- the yoke body 4 to 6 and the magnetic coil 7 thus form the magnetic device of the separating device 2.
- the magnetic coil 7 located in the inner space enclosed by the yoke body is only expanded in the axial direction to such an extent that between its end faces and the respective yoke plates 5 and 6 respectively cylindrical space 9 or 10 is formed with a small axial extent.
- a magnetic field is generated with the magnetic coil 7, which runs in a central, cylindrical filter space 12 delimited by it at least approximately parallel to the axis 3 between the yoke plates 5 and 6 and whose magnetic induction in the filter space is illustrated by arrows denoted by B.
- a filter structure 13, not shown in detail in the figure, is arranged in the filter space 12.
- This filter structure is, in particular, a stack of a multiplicity of nets, so-called net blanks, which consist of the finest wires and have a predetermined mesh size.
- a corresponding stack contains, for example, 150 fine nets with a wire gauge of 0.067 mm and 0.14 mn.
- the nets of this stack facing the circular disk-shaped yoke plates 5 and 6 can be coarser and, for example, have a wire thickness of 0.3 mm and a mesh size of 0.5 mm.
- the networks consist of non-corrosive, ferromagnetic material, for example of stainless steel, and are arranged perpendicular to the magnetic field directed parallel to axis 3 in the area of the filter structure.
- the space 9 formed between the yoke plate 5 and the magnetic coil 7 or the filter space 12 serves as a distribution chamber, which is provided with a lateral inlet 15 for the medium M, for feeding the medium, designated M, containing the particles to be separated out, into the filter structure 13. As indicated by the arrowed lines in the figure, from there the medium enters the filter structure 13 from below through the end face denoted by 16.
- the upper space 10 between the magnetic coil and the yoke plate 6 serves as a collecting channel, which is provided with a lateral outlet 18 for the filtered medium, designated M '.
- individual column-like elements 20 such as bolts made of ferromagnetic material, are provided between the yoke plate 5 and the filter structure. These elements are fastened, for example, to the yoke plate 5 and extend in the axial direction up to the first network of the filter structure 13.
- the magnetic field is advantageously applied to the Filter structure coupled without interruption. At least the entire cross-sectional area of the magnetic field-guiding elements 20 covers about 1/4 to 1/2 of the entry area 16 of the filter structure, with a not too high entry speed of the medium M into the filter structure being ensured.
- the elements are at least approximately evenly distributed over the inlet surface 16, a corresponding, largely uniform flow with little turbulence is achieved at the inlet. Clogging of the filter structure on the inlet side is thus prevented.
- the outlet side of the separating device 2 can also be provided with magnetic field-guiding elements 21 between the yoke plate 6 and the filter structure 13 corresponding to the inlet side. A corresponding number and arrangement of these elements can also prevent turbulence on the outlet side.
- guide bodies 19 influencing the flow conditions can be provided at least on the inlet side in the distribution chamber 9 on the side facing the inlet 15.
- a baffle serves to initially force the inflowing medium M at least on the side facing the inlet 15 to a greater distance from the inlet surface 16 of the filter structure. This can prevent the medium flowing into the filter structure 13 comparatively much more closely at points of the inlet surface 16 closer to the inlet than at points of the inlet surface further away from the inlet.
- baffles net-like structures can also be provided if necessary can also be formed to form a tubular body enclosing the elements 20 at a predetermined distance.
- FIG. 2 In addition to the orientation and design form of the magnetic field-guiding elements 20 and 21 shown in FIG. 1, other elements extending between the yoke plate 5 and 6 and the filter structure 13 are also suitable for preventing turbulence at the entry surface 16 or the corresponding exit surface of the structure . Two embodiments of such elements emerge from FIGS. 2 and 3, parts in these figures which correspond to FIG. 1 being provided with the corresponding reference numerals.
- elements can also be provided which are oriented obliquely with respect to the axis 3 and a central element 20. It can with respect to this. Elements 23 arranged further away from the axis can be inclined more than the closer elements 22. This can further harmonize the flow of the medium M entering the filter structure.
- At least the magnetic field-guiding elements 24 running between the yoke plate 5 and the entry surface 16 of the filter structure 13 may not only have a cylindrical shape, but may also be frustoconical, for example.
- the magnetic field-guiding, the flow-uniformizing elements 20 to 24 are attached directly to the yoke plates 5 and 6, respectively.
- these elements are held together by a special holding plate made of ferromagnetic material, this particular plate then being rigidly connected to the respective yoke plate.
- FIG. 4 and 5 schematically illustrate a further HGM separating device according to the invention as a longitudinal section or as a cross section. Parts corresponding to FIG. 1 have the corresponding reference numerals.
- This device designated generally by 26, differs from the device 2 according to FIG. 1 essentially in that an axial feed line of the medium M to be filtered and a corresponding discharge of the filtered medium M 'are provided.
- a disc-shaped yoke plate 28 of a yoke body made of ferromagnetic material lying on the inlet side contains a central bore 29, the diameter of which is adapted to the diameter of the filter space 12 enclosed by a hollow cylindrical magnet coil 7 with a filter structure 13.
- Individual magnetic field-guiding elements 30 made of ferromagnetic material are arranged in the bore 29 and are laterally connected to the yoke plate 28.
- Iron elements which are parallel to one another and which, viewed in the direction of flow, extend directly to the filter structure 13 can advantageously be provided as elements. Even with such sheets, particularly at high flow velocities, turbulence can enter the filter structure 13 tendency medium M and thus at least largely prevent an inhomogeneous shutdown at the filter input.
- sheets 31 can also be provided in a central bore 32 of a yoke plate 33 on the outlet side.
- perforated plates made of ferromagnetic material fitted into the bores 29 and 32 can also be used, on the sides of which facing the filter structure 13 in each case bolts according to FIGS. 1 to 3 are attached.
- the bolts 20 to 24 and the sheets 30 and 31, in particular in the case of a larger cross section of each of these elements, can also be provided with distribution channels on their end faces facing the filter structure.
- Slits running, for example, parallel to the corresponding inlet or outlet surface of the filter structure can serve as distribution channels in order to further promote the distribution of the medium entering or exiting the filter structure.
Landscapes
- Filtration Of Liquid (AREA)
- Filtering Materials (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3039171A DE3039171C2 (de) | 1980-10-16 | 1980-10-16 | Vorrichtung zum Abscheiden von magnetisierbaren Teilchen nach dem Prinzip der Hochgradienten-Magnettrenntechnik |
| DE3039171 | 1980-10-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0050281A1 true EP0050281A1 (fr) | 1982-04-28 |
| EP0050281B1 EP0050281B1 (fr) | 1985-05-22 |
Family
ID=6114553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81108146A Expired EP0050281B1 (fr) | 1980-10-16 | 1981-10-09 | Dispositif de séparation pour la technique de séparation à gradients magnétiques élevés |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4432873A (fr) |
| EP (1) | EP0050281B1 (fr) |
| JP (1) | JPS5794317A (fr) |
| CA (1) | CA1187007A (fr) |
| DE (1) | DE3039171C2 (fr) |
| SU (1) | SU1069608A3 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR20060100249A (el) * | 2006-04-27 | 2007-11-15 | Βασιλειος Γεωργιου Νικολοπουλος | Διαδικτυακη ενεργειακη μηχανη αναζητησης και μεθοδος ληψης αποφασεων για βελτιστη διαχειριση και τιμολογιακη εκτιμηση ενεργειακων πορων |
| CN102179386A (zh) * | 2011-01-17 | 2011-09-14 | 中国石油大学(北京) | 具有高梯度磁分离器的清管器收球装置及粉末分离方法 |
| CN107309082A (zh) * | 2017-07-19 | 2017-11-03 | 北京科技大学 | 超导高梯度磁分离转炉除尘灰制备高纯铁氧化物的方法 |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3336255A1 (de) * | 1983-10-05 | 1985-04-18 | Krupp Polysius Ag, 4720 Beckum | Vorrichtung zur abscheidung ferromagnetischer partikel aus einer truebe |
| JPS6128413A (ja) * | 1984-07-19 | 1986-02-08 | Sumitomo Heavy Ind Ltd | 船舶燃料油中の接触分解触媒の除去方法 |
| US6020210A (en) * | 1988-12-28 | 2000-02-01 | Miltenvi Biotech Gmbh | Methods and materials for high gradient magnetic separation of biological materials |
| EP1177424A4 (fr) | 1999-04-09 | 2005-04-06 | Shot Inc | Separateur electromagnetique multiphase destine a purifier des cellules, des produits chimiques et des structures proteiques |
| GB0023385D0 (en) * | 2000-09-23 | 2000-11-08 | Eriez Magnetics Europ Ltd | Magnetic separator |
| US20040053136A1 (en) * | 2002-09-13 | 2004-03-18 | Bauman William C. | Lithium carbide composition, cathode, battery and process |
| DE102004034541B3 (de) * | 2004-07-16 | 2006-02-02 | Forschungszentrum Karlsruhe Gmbh | Hochgradienten-Magnetabscheider |
| USH2238H1 (en) | 2006-07-26 | 2010-05-04 | The United States Of America As Represented By The Secretary Of The Navy | Magnetic particle separator |
| US8673623B2 (en) * | 2007-08-31 | 2014-03-18 | Board Of Regents, The University Of Texas System | Apparatus for performing magnetic electroporation |
| DE102008047852B4 (de) * | 2008-09-18 | 2015-10-22 | Siemens Aktiengesellschaft | Trenneinrichtung zum Trennen eines Gemischs von in einer in einem Trennkanal geführten Suspension enthaltenen magnetisierbaren und unmagnetisierbaren Teilchen |
| WO2011032149A2 (fr) * | 2009-09-14 | 2011-03-17 | Board Of Regents, The University Of Texas System | Générateur de marx bipolaire à semi-conducteurs |
| US9598957B2 (en) | 2013-07-19 | 2017-03-21 | Baker Hughes Incorporated | Switchable magnetic particle filter |
| CN103586126A (zh) * | 2013-11-05 | 2014-02-19 | 合肥工业大学 | 用于捕获高温液态金属冷却剂中磁性杂质的磁阱 |
| US9352331B1 (en) * | 2015-09-26 | 2016-05-31 | Allnew Chemical Technology Company | Filters for paramagnetic and diamagnetic substances |
| RU2717817C1 (ru) * | 2019-09-16 | 2020-03-25 | Федеральное государственное унитарное предприятие "Научно-исследовательский технологический институт имени А.П. Александрова" | Высокоградиентный магнитный фильтр с жесткой матрицей |
| CN114749272B (zh) * | 2022-04-18 | 2022-12-13 | 湖南中科电气股份有限公司 | 一种废钢磁选系统及方法 |
| CN115780080B (zh) * | 2022-11-15 | 2025-04-08 | 广东省科学院资源利用与稀土开发研究所 | 一种立环高梯度磁选机及其分选环装置 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2228686A1 (de) * | 1971-06-25 | 1973-01-25 | Philips Nv | Magnetisches filter |
| DE2628095A1 (de) * | 1976-06-23 | 1978-01-05 | Siemens Ag | Magnetische abscheidevorrichtung |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB557214A (en) * | 1942-04-30 | 1943-11-10 | Herbert Huband Thompson | Improvements in or relating to magnetic separators |
| US2925650A (en) * | 1956-01-30 | 1960-02-23 | Pall Corp | Method of forming perforate metal sheets |
| GB1190329A (en) * | 1968-04-23 | 1970-05-06 | M E L Equipment Co Ltd | Magnetic Filter |
| US3567026A (en) * | 1968-09-20 | 1971-03-02 | Massachusetts Inst Technology | Magnetic device |
| US4116829A (en) * | 1974-01-18 | 1978-09-26 | English Clays Lovering Pochin & Company Limited | Magnetic separation, method and apparatus |
| GB1501396A (en) * | 1974-07-19 | 1978-02-15 | English Clays Lovering Pochin | Magnetic separators |
| GB1599823A (en) * | 1978-02-27 | 1981-10-07 | English Clays Lovering Pochin | Separating chamber for a magnetic separator |
| JPS55111813A (en) * | 1979-02-21 | 1980-08-28 | Nec Corp | Magnetic separator |
-
1980
- 1980-10-16 DE DE3039171A patent/DE3039171C2/de not_active Expired
-
1981
- 1981-10-09 EP EP81108146A patent/EP0050281B1/fr not_active Expired
- 1981-10-09 US US06/310,323 patent/US4432873A/en not_active Expired - Fee Related
- 1981-10-15 CA CA000387994A patent/CA1187007A/fr not_active Expired
- 1981-10-15 SU SU813343296A patent/SU1069608A3/ru active
- 1981-10-16 JP JP56165599A patent/JPS5794317A/ja active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2228686A1 (de) * | 1971-06-25 | 1973-01-25 | Philips Nv | Magnetisches filter |
| FR2143481A1 (fr) * | 1971-06-25 | 1973-02-02 | Philips Nv | |
| DE2628095A1 (de) * | 1976-06-23 | 1978-01-05 | Siemens Ag | Magnetische abscheidevorrichtung |
| FR2355545A1 (fr) * | 1976-06-23 | 1978-01-20 | Siemens Ag | Dispositif de separation magnetique |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GR20060100249A (el) * | 2006-04-27 | 2007-11-15 | Βασιλειος Γεωργιου Νικολοπουλος | Διαδικτυακη ενεργειακη μηχανη αναζητησης και μεθοδος ληψης αποφασεων για βελτιστη διαχειριση και τιμολογιακη εκτιμηση ενεργειακων πορων |
| CN102179386A (zh) * | 2011-01-17 | 2011-09-14 | 中国石油大学(北京) | 具有高梯度磁分离器的清管器收球装置及粉末分离方法 |
| CN107309082A (zh) * | 2017-07-19 | 2017-11-03 | 北京科技大学 | 超导高梯度磁分离转炉除尘灰制备高纯铁氧化物的方法 |
| CN107309082B (zh) * | 2017-07-19 | 2021-01-12 | 北京科技大学 | 超导高梯度磁分离转炉除尘灰制备高纯铁氧化物的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6123005B2 (fr) | 1986-06-04 |
| JPS5794317A (en) | 1982-06-11 |
| SU1069608A3 (ru) | 1984-01-23 |
| DE3039171A1 (de) | 1982-05-13 |
| US4432873A (en) | 1984-02-21 |
| EP0050281B1 (fr) | 1985-05-22 |
| CA1187007A (fr) | 1985-05-14 |
| DE3039171C2 (de) | 1985-11-28 |
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