EP1524038A1 - Magnetscheider - Google Patents

Magnetscheider Download PDF

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Publication number
EP1524038A1
EP1524038A1 EP04292383A EP04292383A EP1524038A1 EP 1524038 A1 EP1524038 A1 EP 1524038A1 EP 04292383 A EP04292383 A EP 04292383A EP 04292383 A EP04292383 A EP 04292383A EP 1524038 A1 EP1524038 A1 EP 1524038A1
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EP
European Patent Office
Prior art keywords
magnetic
fluid
wall
separator according
channel
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Withdrawn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
EP04292383A
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English (en)
French (fr)
Inventor
Serguei Gladkov
Valerio Polo
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.)
Ets Raoul Lenoir
Original Assignee
Ets Raoul Lenoir
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 Ets Raoul Lenoir filed Critical Ets Raoul Lenoir
Publication of EP1524038A1 publication Critical patent/EP1524038A1/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Withdrawn legal-status Critical Current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
    • B03C1/30—Combinations with other devices, not otherwise provided for
    • 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
    • B03C1/28—Magnetic plugs and dipsticks
    • B03C1/288—Magnetic plugs and dipsticks disposed at the outer circumference of a recipient

Definitions

  • separators are used to work wet, that is to say on pulps composed a liquid loaded with particulate product containing, in mixing, magnetic particles and non-particles which we wish to separate from one another others, and implement for this purpose a field magnetic low intensity.
  • these magnetic separators comprise a tank open to the open, in which the pulp flows between a pulp inlet to be treated, that is to say liquid carrying mixture of magnetic particles and non-magnetic particles, and a pulp outlet treated, that is to say of liquid for the essential discharged magnetic particles and no longer carrying for the most part that non-magnetic particles.
  • a pulp inlet to be treated that is to say liquid carrying mixture of magnetic particles and non-magnetic particles
  • a pulp outlet treated that is to say of liquid for the essential discharged magnetic particles and no longer carrying for the most part that non-magnetic particles.
  • Above of the tank is mounted, to the rotation around a horizontal axis relative thereto, a ferrule in non-magnetic material whose lower part bathes in the pulp, inside the tank, and that motor means rotate, depending on the case, in a sense that it moves in the same direction as the pulp inside the tank or in the opposite direction.
  • the angular position of the alternation of magnets permanent and polar pieces, inside the ferrule, is such that the magnetic particles remain subject to the action of the magnetic field until that they are driven by the ferrule out of the pulp, after which the magnetic attraction ceases and the magnetic particles fall by gravity as well as under the action of the centrifugal force in a hopper towards which they are guided by a suitable deflector.
  • Such magnetic separators at low intensity, wet have the advantage of offering a high rate of recovery of magnetic particles in roughing, as well as an optimal purification rate in finishing treatment while allowing flow rates high pulp supply.
  • they allow the treatment of pulp containing 20 to 30% solids by weight, with a particle size of these solids between a few tens of micrometers and 5 to 6 millimeters.
  • a magnetic separator it is no longer the pulp in circulation surrounding the magnetic attraction means intended to attract magnetic particles but these means of magnetic attraction that surround the pulp in circulation, adding their effects to the particles magnetic to those of the centrifugal force exerted in particularly on these. So, in a separator magnetic circuit according to the invention, the magnetic field and the centrifugal force combine to favor the separation of the magnetic particles, which allows group on the outer wall of the canal a proportion increased of these, in order to route them to the output for magnetic particles, making them slide or roll on this outer wall of the canal.
  • the gravity that is exerted on the magnetic particles does not act against force that the magnetic field exerts but, on the contrary, tends to naturally bring back the separated magnetic particles down and to the exit that is assigned to them.
  • a separator magnetic device has performance even better than magnetic separators at low intensity of the prior art, with space equivalent or lower. Even more, it is possible to give the mutual spacing of the inner walls and outside the channel a sufficiently low value for be compatible with the choice of means of attraction magnetic to create a high magnetic field intensity, whose configuration is shorter than that of a low-intensity magnetic field, while maintaining sufficient efficiency of the magnetic field so created on the entire spacing between the two walls, that is to say the width of the channel.
  • the distributor and / or the first collector of output and / or the second output collector are vertically and extend substantially over the whole of said height; preferably, it is so at the same time of the entrance distributor and each of the first and second exit manifolds.
  • the fluid and particles it carries are distributed without turbulence over the entire height of the channel as soon as they enter in it and until they come out of it, which allows the magnetic field to exert its action without disturbances, on almost all of this height even at the beginning and at the end of the canal fluid and particles.
  • the input distributor is of the cyclonic type, which allows to print to the particulate product a force centrifuge that comes to press against the wall outside the canal as soon as it arrives in it, that is to say to submit upon arrival in this channel the magnetic particles it contains to the force exerted by the magnetic field.
  • a magnetic separator according to the invention offers unknown possibilities in the art prior to the fluid used for Carry the particulate products to separate.
  • the means of pipe also include a tight cover fluid audit, of non-magnetic material, flat and horizontal, mutually connecting the inner walls and outer in an upper end zone respective, to close the channel in a sealed manner fluid between said inlet and said outlets.
  • a magnetic separator according to the invention lends itself to an embodiment of the means of pipe in form completely fluid tight in question and, in particular, allows to use as fluid as well a gas or gas mixture as a liquid, to practice the separation while the fluid is located overpressure compared to ambient air or depression in relation to it as well as to the ambient pressure, and work with fluids toxic as well as with harmless fluids.
  • the fluid carrying the particulate product to be separated has a natural tendency to flowing down, as is the case most fluids, one can foresee or not a tight cover of the channel, although such coverage waterproofing is preferred in such a case, even when is simply to avoid an overflow of the fluid, but it is expected that the feed pipe and the pipe takeover respectively into an area top end of the inlet manifold and in a lower end zone of the second collector of exit.
  • the magnetic attraction means be stationary by relative to the frame, and that only the flow of the fluid causes the transport of magnetic particles, the along the outer wall, up to the collector corresponding output.
  • the means of attraction magnetic means include means for guiding against on the frame, following a closed horizontal trajectory a part runs along the outer wall by its side convex, a continuous and regular alternation, in reference to a circumferential direction of said trajectory, of permanent vertical magnets presenting substantially said uniform height and said position uniform in a vertical direction, two magnets permanent neighbors following the circumferential direction with magnetizations of the same direction and meaning opposite so as to create said magnetic field to within said trajectory, and means for to cause said alternation of permanent magnets continuous along said path in one direction determined training of said direction circumferential with respect to the frame.
  • magnets can present a circumferential direction magnetization, in reference to the trajectory they accomplish, and two circumferentially adjacent magnets magnetized in opposite meanings, be separated from each other by a pole piece so that it's alternating circumferential polar pieces of polarities opposites that creates inward channel lines of magnetic field, in a manner known in itself in the case of low-intensity magnetic separators the prior art.
  • magnets permanent show steering magnetizations perpendicular to said trajectory and that two magnets permanent neighbors following said direction circumferential are magnetically connected to each other, outside said path, by means forming a cylinder head and thus create directly between them the field lines to the inside of the canal.
  • this ferrule advantageously constitutes the breech ensuring the magnetic connection between permanent magnets neighbors outside their path.
  • a separator according to the invention the permanent magnets creating the magnetic field is move along the flow channel of the loaded fluid particles may be compact and efficiency that is all the greater that we can give to the outer wall of the canal, that is to say on the trajectory that the charged fluid accomplishes between its entry and its output being subjected to the action of the magnetic field, a length very close to that of the trajectory of the alternation of permanent magnets.
  • the outer wall preferably has, with reference to the axis, an angular dimension greater than 180 °, of preferably of the order of 270 °, it being understood that there is instead of keeping some angular development available for entry and exits.
  • a magnetic separator according to the invention allows to subject the fluid and the particulate product it charrie to the action of the magnetic field over a distance much larger than in the separators of the prior art, of comparable dimensions.
  • the wall is preferably provided outside gradually bends in this direction flow through the particle-laden fluid on the side concave of this wall, that is to say towards the interior of said trajectory in the preferred embodiment, mentioned above, of the separator according to the invention, from the second exit manifold and up to the first output collector, that is to say from the collector output for the mixing of fluid and non-magnetic particles and up to the intended collector for the output of the magnetic particles.
  • the particles separate magnetic fields gradually escape the field magnetic and the action of gravity becomes progressively preponderant on the friction that the force exerted by the magnetic field imposes on magnetic particles, on the outer wall, and that's naturally that magnetic particles get gather in the first output manifold, planned specifically to collect them.
  • the inner wall also gradually bends in the said direction of course, the concave side of this wall, that is to say inward of that trajectory in the case of aforementioned preferred embodiment, starting from the second outlet manifold and up to the first collector of exit.
  • Figure 1 shows a top view of a magnetic separator according to the present invention, the cover of the channel if such a cover is expected, as it is preferred.
  • Figure 2 shows a view of this separator in part in section with vertical planes marked II-II in Figure 1 (frame and ferrule bearing in this case alternation of permanent magnets), and partly in side elevation in a direction perpendicular to these plans, identified by an arrow not identified in Figure 1 (channel for the loaded fluid, with its distributor entrance and its two exit collectors).
  • the separator according to the invention has a general symmetry of revolution around a vertical axis 1 when in position use.
  • a frame 2 comprising four vertical columns 3 that are regularly angularly distributed around axis 1 and equidistant from it. These columns 3 correspond in pairs of two columns mutually symmetrical with respect to the axis 1 and arranged according to a same vertical vertical plane, vertical vertical planes 4 and 5 corresponding to the two pairs of columns 3 intersecting at right angles along the axis 1.
  • each column 3 bears integrally, projecting towards the axis 1, a respective console 8 cantilever, having a respective upper face 9 flat and horizontal, the faces 9 of the consoles 8 corresponding to the four columns 3 being mutually coplanar.
  • Each of the upper faces 9 protrudes upwards, through a respective clevis 10, a respective roller 11 mounted to the rotation, by relative to the respectively corresponding screed 10, around a horizontal axis 12 of the middle plane corresponding respectively 4, 5, the intersecting axes 12 thus perpendicular to the axis 1.
  • the four rollers 11 are mutually identical and three of them are mounted free to rotate about their axis 12 by compared to the corresponding screed 10, while the fourth roller 11 is kinematically linked to means rotational drive about its axis 12, in a defined direction, compared to the clevis 10, these means comprising for example an electric motor 13 mounted in the corresponding column 3.
  • each of the columns 3 integrally carries two clevises 15, 16 which are located according to the respective average plane 4, 5, respectively closer to the plane 14 than to the upper end 7 and closer to the end 7 than the plane 14.
  • These two clevises 15 and 16 carry, at free rotation around the same axis vertical 17, a respective roller 18, 19.
  • the axes 17 corresponding to the different columns 3 are located on the same geometric cylinder, of revolution around the axis 1, and the rollers 18, 19 are identical from one column 3 to the other, so that their generators closest to axis 1 are located along the same geometrical cylinder 20, revolution around this axis.
  • rollers 18 corresponding to the four columns 3 are located at the same level, as well as the corresponding rollers 19 to these four columns 3.
  • rollers 11, 18, 19 serve to ensure guidance and, as regards the roller 11 associated with the motor 13, the drive of a ferrule 21, of material ferromagnetic such as steel, with rotation around of the axis 1 relative to the frame 2.
  • the shell 21 has a wall tubular 22 cylindrical of revolution about the axis 1, that is to say delimited, respectively in the sense of a away from it and in the sense of a approximation to it, by one side outer peripheral 23 and a peripheral face inner 24, one and the other cylindrical of revolution around this axis 1.
  • the peripheral face 23 has a diameter identical to that of the geometric cylinder 20 while, parallel to this axis 1, it has an unreferenced height greater than the vertical distance separating from plane 14 the rollers 19 closest to the upper ends 7 of the columns 3.
  • the wall 22 has an edge upper free 25 plane, horizontal while towards the down, it connects solidarily, by one edge lower 26 also flat and horizontal, at a ledge ring 27, of revolution around the axis 1, delimited respectively up and down by one side flat, horizontal 28, 29, and towards the axis 1 by a face inner peripheral 30 cylindrical revolution around this axis 1 with a diameter not referenced less than that of the inner peripheral face 24 of the wall 22, although close to the diameter of this face inner device 24.
  • the rollers 11 of the consoles 8 are located between the geometric cylinder 20 and a geometric cylinder 31 according to which the peripheral face is arranged interior of the rim 27 which thus rests on the low, by its underside 29, on the generators upper four pebbles 11, according to the plan geometric 14, while the outer peripheral face 23 of the wall 22 of the shell 21 is supported, in the meaning of a distance from the axis 1, on the generators of rollers 18 and 19 closest to the axis 1, according to the geometric cylinder 20.
  • the inner peripheral face 24 of the wall 22 of the ferrule 21 solidarily carries a regular circumferential alternation of magnets 32 permanent and spacers 33 non-material magnetic such as PVC, having the respective shape of vertical chopsticks.
  • Two permanent magnets 32 neighbors in the circumferential direction respective magnetizations of radial direction but of opposite directions so as to present towards axis 1 polarities opposite, so that field lines magnets not shown develop between them on the one hand towards the inside of the shell 21, that is to say towards the axis 1 and secondly in the wall 22 of the ferrule 21, thus playing the role of a connecting yoke magnetically, two by two, permanent magnets 32 circumferentially neighboring.
  • circumferential sense field lines opposites alternate circumferentially, to inside the shell 21, forming a field continuous magnet circumferentially.
  • This is in the species of a low-intensity magnetic field, know of an intensity between about 800 to 1800 gauss at a distance of the order of 50 mm to 25 mm permanent magnets 32, in a radial direction in reference to axis 1, these figures being indicated only as a non-limitative example, especially as separator according to the invention is compatible with the use of magnetic fields of intensity higher.
  • each permanent magnet 32 and spacers 33 have the same height H, by example of the order of 44 cm, also less than the height of the wall 22 measured between its upper edges 25 and lower 26, and their position is identical, each of them having a lower end not referenced in the immediate vicinity of the face upper rim 27 and an upper end not referenced at a short distance below the edge 25 of the wall 22.
  • each permanent magnet 32 may be constituted by a butt alignment, parallel to axis 1, of elementary permanent magnets from a height corresponding to a fraction of H, so not shown but easily understandable by a man of career.
  • permanent magnets 32 and spacers 33 complete a circular trajectory, and their generators closest to axis 1, namely generators of permanent magnets 32, describe a trajectory in the form of a geometric cylinder 35, revolution around axis 1, with a diameter D intermediate between the respective diameters of the geometric cylinders 20 and 31.
  • the respective numbers, mutually identical, permanent magnets 32 and spacers 33 can be easily determined by a person skilled in the art, depending on of the diameter D of the geometric cylinder 35, to give the magnetic field lines developing between two permanent magnets 32 neighbors a look suitable to the separation of the magnetic particles, this determination being made under conditions similar to those of the prior art.
  • this cylinder geometric 35 that is to say, set back from this one towards the axis 1, that are arranged the means 36 of channeling the fluid carrying the particulate product to separate.
  • the means 36 are designed to guide the fluid carrying the particulate product to separate the along the geometrical cylinder 35, inside it, in a sense 63 which, in the illustrated example, is opposite to the direction 34 of rotation of the shell 21 relative to to frame 2 and, preferably, as illustrated, on angular development as large as possible in reference to axis 1, namely in this example of the order 270 °.
  • the channeling means 36 have two walls 37, 38 of non-magnetic material, respectively external and inferior with reference to axis 1, the first of which runs along the geometric cylinder 35, in the immediate vicinity of it, on the aforementioned maximum angular development, for example of the order of 270 °.
  • Both walls 37 and 38 present the same height H that the permanent magnets 32 and the spacers 33 and occupy the same position as these permanent magnets 32 and spacers 33 in the direction vertical, and each of them presents internally and externally, with reference to axis 1, the shape of a cylindrical part of revolution around of this axis 1, with a respective small thickness relative to their diameter and for example of the same order of size as the thickness of the ferrule of the separators magnetic low intensity of the prior art.
  • the outer wall 37 externally has a diameter approximately equal to the diameter D, to which it is less than a functional game designed to avoid any risk of friction between the wall 37 and the alternation of permanent magnets 32 and spacers 33 during the rotation of these with the ferrule 21 in the direction 34, about the axis 1, with respect to the frame 2 in case of slight lack of coaxiality.
  • the wall 38 presents it diameters respectively inside and outside, unreferenced, chosen so as to leave between the two walls 37 and 38 a channel 39 of width e constant, with reference to radial directions by compared to axis 1, and low enough for the magnetic field created between two permanent magnets 32 neighbors is effective on the whole of this radial width e. By way of non-limiting example, this may be of the order of 25 mm.
  • channel 39 is closed by a bottom flat 40, horizontal, which is waterproof to the fluid carrying the particles to be separated, as are also the walls 37 and 38, and which connects to a lower zone respective of the latter, in solidarity and also tight to this fluid.
  • the walls 37 and 38 are mutually connected in one zone respective upper end, by a flat cover, horizontal, 41 which connects to them in solidarity and sealed to this fluid, to which it is itself waterproof; in this case, the channel 39 is sealed, this which allows the separator according to the invention to separate magnetic particles carried by non fluids only liquid, but also gaseous, if any toxic and if necessary under pressure.
  • the bottom 40 and the 41 possible cover are made of a material not magnetic.
  • the walls 37 and 38 With reference to the direction 63, the walls 37 and 38, of same as the bottom 40 and the possible cover 41, have a respective upstream end zone, corresponding to an upstream end zone 42 of the channel 39, for example in the plane 4, and connect upstream to a respective wall, not referenced, of a vertical distributor 43 for the fluid loaded with particles to separate.
  • this distributor 43 extends over the whole of the height H, essentially recessed towards the axis 1 relative to the wall 38, and constitutes a distributor Cyclonic vertical axis 44, located between the zone upstream end 42 of the channel 39 and the axis 1, so as to communicate with fluid and particles entering the channel 39 a centrifugal effect with reference to axis 44 as well as to axis 1 in order, in particular, to tend to flatten the particles to separate against the wall 37 of channel 39.
  • the dispenser 43 when seen in plan, has the shape of a volute that starts widening in one direction of rotation 45, around the axis 44, corresponding to the direction of rotation 34 around axis 1 until connected to the zone upstream end 42 of the channel 39 along the plane 4.
  • the distributor 43 Upward when the fluid carries the particles to be separated is a liquid, as it is illustrated, that is to say in an end zone upper located at the lid 41 possible or above it, the distributor 43 is connected, by the narrowest area of the volute, to a driving 46 fluid supply charged with particles to separate, which is fixed as the distributor 43 by relative to the frame 2 of the separator. It can be the same whenever the fluid carries the particles to separating is heavier than the ambient air, or if it is overpressure compared to this one, whatever by elsewhere its nature.
  • driving power supply can be connected not to a zone top end of the dispenser 43, but at a lower end zone of it, below the bottom 40, as shown schematically in 47 in Figure 2.
  • the loaded fluid particles to be separated through the channel 39 in the sense 63 in which it flows against the field magnetic emitted by the alternation of permanent magnets 32, which captures the magnetic particles to flatten them on the wall 37, on which these magnetic particles move by sliding in the direction 63 under the action of the displacement of the charged fluid in this direction inside of channel 39 and / or rolling while cooperating with the field magnetic rotating in the manner of a pinion with a gear wheel in a gear.
  • the fluid is thus gradually discharged from its magnetic particles as and when its channel 39 and in a downstream end zone 48 of the latter in reference to meaning 63, corresponding to a downstream end zone of the walls 37 and 38, the bottom 40 and if necessary of the cover 41, we collect separately by means of a respective manifold 49, 50, fixed relative to the frame 2 of the separator, on the one hand the separate magnetic particles and secondly the fluid which is only loaded with non-magnetic particles, at least for the most part.
  • the angular development of channel 39 in reference to axis 1 is as close as possible to 360 °, without limitation other than the need to provide sufficient space to dispose collectors 49 and 50 exit next to the dispenser 43, inside the geometric cylinder 35, in order to make the separation magnetic as effective as possible; in the example illustrated, this angular development is of the order of 270 °, namely more precisely a little more than 270 ° between the inlet distributor 43 and the collector 49 of recovery of magnetic particles and a little less 270 ° between the inlet distributor 43 and the collector 50 fluid loaded exclusively or roughly exclusively non-magnetic particles.
  • the collectors 49 and 50 have an axis respective vertical 51, 52 and, although these two collectors 49 and 50 are mutually adjacent, their axes 51 and 52 are respectively disposed of and else of plan 5, namely more precisely a half-plane 53 delimited by axis 1 and corresponding to this plan 5, shifted 270 ° in the direction 63 relative to a half-plane 54 delimited by the axis 1 and corresponding to the part of the plane 4 containing the axis 44 of the inlet distributor 43 as well as the upstream end zone 42 of the channel 39.
  • the outer wall 37 of channel 39 begins to gradually bend in the direction of a approach towards Axis 1 while remaining parallel to this one, and this deflection is accentuated downstream of the half-plane 53 with reference to the direction 63, although that the magnetic particles retained on this wall 37 by the magnetic field generated by the alternation permanent magnets 32 and brought thereby by the flow of the charged fluid in the direction 63 and / or by rolling on this wall 37 are gradually escaping this magnetic field and, thus, fall by gravity towards the bottom 40 of the channel 39.
  • This shift continues to an area downstream end of the wall 37, with reference to direction 63, downstream end zone through which the wall 37 connected to a wall 55, vertical, of the collector 49.
  • This wall 55 is semicylindrical of revolution around of the axis 51, which is shifted towards the axis 1 relative to the wall 37 in its downstream end zone as well as by relative to the geometric cylinder 35, and it extends over the entire dimension H by connecting to the wall 37, at a downstream end zone of the wall 38, reference to direction 63, as well as to bottom 40 and to the cover eventual 41 in a fluid-tight manner carrying the particles to be separated, to which it is itself waterproof.
  • the wall 38 bends gradually towards axis 1 while remaining parallel to this one, an area slightly upstream of the half-plane 53 with reference to direction 34, at its end zone downstream, located slightly downstream of this half-plane 53 in reference to sense 34, and its deflection is more pronounced as that of the wall 37 so well approximately from plane 53, the spacing mutual walls 37 and 38 in a radial direction with reference to axis 1 is gradually increasing to connecting the two walls 37 and 38 to the wall 55 of the collector 49.
  • the collector 49 connects through an unreferenced hole in the bottom 40 of the channel 39, in a fluid-tight manner carrying the particles to be separated, to a vertical well 56 for collecting magnetic particles, which is thus placed at a lower than that of the bottom 40, within the geometric cylinder 31, and is closed down, from fluid-tight way carrying the particles to separate, by a removable pad 57 that can be opened regularly to extract from the well 56 the particles magnetic data collected in the latter.
  • this collection method assumes that particle amounts magnetic data collected for a definite time remain relatively low, and other means of collection could be provided in particular in the case of larger amounts of magnetic particles by unit of time.
  • the part of the wall 38 close to its end zone downstream with reference to sense 63, which bends gradually in this direction towards axis 1 constitutes a separation, fluid-tight carrying the particles to separate, between the collector 49 of the particles separated magnetic and the collector 50 of the fluid carrying almost exclusively non-particulate matter magnetic, and has the shape of a part of cylinder of revolution around the axis 52, which is closer to axis 1 than axis 51.
  • This part of the wall 38 which is thus cylinder of revolution around the axis 52 presents a diameter smaller than the rest of the wall 38 but greater than that of the wall 55.
  • the inflected part of the wall 38 has approximately the shape of a quarter cylinder of revolution around the axis 52 and connects downstream, with reference to direction 63, to a concave wall 58 of the collector 50, which has a approximately hemicylindrical shape of revolution around the axis 52 with a diameter identical to that of the inflected part of the wall 38, that the wall 58 so prolongs.
  • the wall 58 In contrast to its connection with the party inflected from the wall 58, in a direction circumferential with reference to the axis 52, the wall 58 is reconnects to the wall 38, namely by via a convex wall 59 in the direction 63.
  • the walls 58 and 59 are fluid-tight carrying the particles to be separated, extend over the all of the height H and connect so sealed to this fluid on the one hand at the bottom 40 and the lid 24 and between them and, respectively, to the inflected part of the wall 38 and to the rest of this wall 38.
  • the wall 38 presents on the whole of dimension H, between the bottom 40 and the cover 41, if any, interrupt 60 by which the fluid loaded almost exclusively non-magnetic material arrives inside the collector 50, that is to say of a defined volume, around the axis 52, by the part inflected wall 38 and wall 58.
  • the collector 50 thus placed in communication by the interruption 60 of the wall 38 with the channel 39, to which it is thus connected in a fluid-tight manner carrying the particles to be separated, is moreover connected, also tightly to this fluid, to a conduit 61 for taking up the fluid loaded with non-particles magnetic.
  • the conduit 61 for taking up the loaded fluid almost exclusively non-magnetic particles is located opposite the supply line 46 fluid loaded with magnetic particles and not to separate, the respective positions of these however, two lines are dictated more general nature of the fluid in question as well as by the pressure to which he is in comparison with the ambient air.
  • the supply line 46 connects to the dispenser 43 by an upper end zone of this one, through the possible cover 41, it is at a lower end region of the collector 50 that the duct 61 connects, namely through the bottom 40.
  • the pipe 61 has the shape of a funnel of revolution around the axis 52, convergent down.
  • the fluid supply line loaded with particles to separate is connected to the distributor 43 by a zone lower end thereof, through the bottom 40, it's usually at an upper end zone of collector 50, through the cover 41, if any, then generally necessary, that the recovery conduct of the fluid essentially charged only particles not magnetic connects, namely via of a hood converging upwards as we have schematized at 62 in Figure 2.

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  • Water Treatment By Electricity Or Magnetism (AREA)
  • Centrifugal Separators (AREA)
EP04292383A 2003-10-15 2004-10-07 Magnetscheider Withdrawn EP1524038A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0312030A FR2860995B1 (fr) 2003-10-15 2003-10-15 Separateur magnetique
FR0312030 2003-10-15

Publications (1)

Publication Number Publication Date
EP1524038A1 true EP1524038A1 (de) 2005-04-20

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FR (1) FR2860995B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012104292A1 (en) * 2011-02-01 2012-08-09 Basf Se Apparatus for continuous separation of magnetic constituents and cleaning magnetic fraction
WO2013167634A1 (en) 2012-05-09 2013-11-14 Basf Se Apparatus for resource-friendly separation of magnetic particles from non-magnetic particles
US9216420B2 (en) 2012-05-09 2015-12-22 Basf Se Apparatus for resource-friendly separation of magnetic particles from non-magnetic particles
CN105597929A (zh) * 2016-02-01 2016-05-25 沈阳隆基电磁科技股份有限公司 一种全自动磁悬浮精选机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2615572A (en) * 1946-08-26 1952-10-28 Edwin T Hodge Spiral separator
FR2317013A1 (fr) * 1975-06-27 1977-02-04 Kloeckner Humboldt Deutz Ag Procede et dispositif pour la preparation de matieres par separation magnetique
DE3827252A1 (de) * 1988-08-11 1990-02-15 Unkelbach Karl Heinz Dr Verfahren und vorrichtung zum kontinuierlichen trennen von biologische mikrosysteme und zellen enthaltenden mischungen
US4941969A (en) * 1986-03-26 1990-07-17 Klaus Schonert Method of and an apparatus for the separation of paramagnetic particles in the fine and finest particle size ranges in a high-intensity magnetic field
US6273265B1 (en) * 1999-07-13 2001-08-14 Bechtel Corporation Magnetically enhanced gravity separator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2615572A (en) * 1946-08-26 1952-10-28 Edwin T Hodge Spiral separator
FR2317013A1 (fr) * 1975-06-27 1977-02-04 Kloeckner Humboldt Deutz Ag Procede et dispositif pour la preparation de matieres par separation magnetique
US4941969A (en) * 1986-03-26 1990-07-17 Klaus Schonert Method of and an apparatus for the separation of paramagnetic particles in the fine and finest particle size ranges in a high-intensity magnetic field
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WO2012104292A1 (en) * 2011-02-01 2012-08-09 Basf Se Apparatus for continuous separation of magnetic constituents and cleaning magnetic fraction
CN103476504A (zh) * 2011-02-01 2013-12-25 巴斯夫欧洲公司 用于连续分离磁性成分和清洗磁性部分的装置
US9352334B2 (en) 2011-02-01 2016-05-31 Basf Se Apparatus for continuous separation of magnetic constituents and cleaning of magnetic fraction
WO2013167634A1 (en) 2012-05-09 2013-11-14 Basf Se Apparatus for resource-friendly separation of magnetic particles from non-magnetic particles
CN104284731A (zh) * 2012-05-09 2015-01-14 巴斯夫欧洲公司 用于资源友好地从非磁性颗粒分离磁性颗粒的设备
US9216420B2 (en) 2012-05-09 2015-12-22 Basf Se Apparatus for resource-friendly separation of magnetic particles from non-magnetic particles
CN104284731B (zh) * 2012-05-09 2017-09-15 巴斯夫欧洲公司 用于资源友好地从非磁性颗粒分离磁性颗粒的设备
CN105597929A (zh) * 2016-02-01 2016-05-25 沈阳隆基电磁科技股份有限公司 一种全自动磁悬浮精选机

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FR2860995A1 (fr) 2005-04-22

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