EP0815941A1 - High gradient magnetic separator - Google Patents

High gradient magnetic separator Download PDF

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Publication number
EP0815941A1
EP0815941A1 EP97111007A EP97111007A EP0815941A1 EP 0815941 A1 EP0815941 A1 EP 0815941A1 EP 97111007 A EP97111007 A EP 97111007A EP 97111007 A EP97111007 A EP 97111007A EP 0815941 A1 EP0815941 A1 EP 0815941A1
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EP
European Patent Office
Prior art keywords
housing
segments
wall
gradient magnetic
magnetic separator
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Granted
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EP97111007A
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German (de)
French (fr)
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EP0815941B1 (en
Inventor
Matthias Dr. Franzreb
Klaus-Peter Dr. Jüngst
Markus Franz
Wolfgang Dr. Höll
Siegfried Prof. Dr. Eberle
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Forschungszentrum Karlsruhe GmbH
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Forschungszentrum Karlsruhe GmbH
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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
    • B03C1/029—High gradient magnetic separators with circulating matrix or matrix elements
    • B03C1/03—High gradient magnetic separators with circulating matrix or matrix elements rotating, e.g. of the carousel type

Definitions

  • the invention relates to a high gradient magnetic separator according to the preamble of the first claim.
  • Such a high gradient magnetic separator is known from US 3,920,543 known.
  • This device has a rotatable, ring-shaped matrix frame arranged horizontally and is divided radially into segments.
  • the segments are with packing, filled with steel wool or balls.
  • each segment passes several magnetic units in succession, which consist of two poles, between which the Matrix frame moves as it rotates. Between the poles a homogeneous magnetic field is generated.
  • the magnetic units can e.g. B. from permanent magnets or electrical Coils exist.
  • a fluid containing solids via an inflow line from above directed into the underlying segment, whereby due to the applied magnetic field para- or weakly ferromagnetic Solids are deposited on the packing. That of the Fluid freed from solids flows in via a drain line down from.
  • the packing is subsequently used in several outside of the magnetic field flushing devices regenerated again.
  • the inlet and Drain lines for the fluid one above the other.
  • the fluid is there only in the area of influence of the magnetic field for a short time, so that the separation effect is not optimal.
  • Another rotatable high gradient magnetic separator is in EP 0 429 700 A1.
  • This magnetic separator contains an annular container filled with steel wool, which is U-shaped in cross section and by a partition that is provided with openings at the bottom of the u-profile, in one outer and an inner area is shared.
  • the container is in a homogeneous magnetic field created by permanent magnets and magnetizable internals is generated. That too cleaning fluid first passes through the outer area of the container, then passes through the openings in the partition and flows into the inner area of the container, taking solid particles be held back. Then the cleaned leaves Fluid the device.
  • this has a high gradient magnetic separator the advantage that the way of Fluid within the magnetic field is longer, making it more effective Separation of solids is possible. Indeed it is not possible to have multiple magnetic units in the same To connect the device in series.
  • the main disadvantage is, however, that the device is not operated continuously can be, because the gap is constantly in the Area of the magnetic field between the poles of the magnetic Unit. Therefore the loaded steel wool has to be mechanically be diverted from the area.
  • the object of the invention is a continuously operating device to propose the type mentioned at the beginning, in which the Path of the fluid within the magnetic field is larger than at the known devices, so that a more effective solid separation is possible.
  • the device is intended to operate simultaneously a series connection of several magnetic devices enable.
  • An essential advantage of the high gradient magnetic separator according to the invention is that the fluid flow within the magnetic field not just once as in EP 0 429 mentioned above 700 A1, but can be redirected several times, so that overall a much longer path within the magnetic field and thus achieve a better solids separation leaves.
  • the fluid flow is not radial, but as in of the above-mentioned US 3,920,543 performed in a circular manner, so that as in this device, several magnetic devices can be connected in series.
  • the invention is a matrix frame with an annular Interior provided by radially arranged partitions is divided into several segments.
  • the number of segments and thus the partition walls determine the length of the path of the fluid in the space.
  • the magnetic unit has a width that corresponds to the width of at least two segments, so that the fluid-like path of the fluid through at least two of the segments within the magnetic field lies.
  • the segments are with a matrix with a large surface, for example with steel wool, wire mesh or profiled metal plates filled.
  • the material of the matrix is said to be the magnetic field bundle up.
  • the high gradient magnetic separator also contains a flushing device with which the loaded matrix regenerates can be.
  • the flushing device is outside the Magnetic field and consists of an inflow and an outflow, which in are related to each other in such a way that only one segment at a time is regenerated with the flushing device.
  • the matrix frame can represent a torus, the with means for attachment to an axis, such as with two or more spokes.
  • the first, third, fifth etc. partition In a lying position of the torus leave the first, third, fifth etc. partition a gap free to the top wall of the torus, while at each second, fourth, sixth etc. partition the gap between between the partition and the lower wall of the torus is.
  • the matrix frame delimits the interior only on two opposite sides.
  • the matrix frame is integrated into a housing, the Inside walls the two sides not delimited by the matrix frame complete the interior.
  • Fig. 1 is the embodiment of the high gradient magnetic separator shown in supervision, the housing 10 is cut along the fault line B.
  • the device has a single magnetic unit 1.
  • Im broken Part of the matrix frame 2 can be seen, which consists of a outer 12 and an inner 11 annular wall, which connected to each other by radially arranged partitions 4 are.
  • the matrix frame 2 is about the axis 3 in the housing 10 rotatable. When rotating, the segments 4 are successively through the space between the two poles 1a, 1b (see Fig. 2) form the magnetic unit 1 together, passed.
  • a flushing device 16 is embedded in the housing 10, which is used to regenerate the matrix material 17 (see Fig. 2) serves in segments 5.
  • the detergent supply line is under supervision 16a visible.
  • Fig. 2 shows a sectional view of the embodiment of the High gradient magnetic separator along the line A-A (Fig. 1).
  • the matrix frame 2 rotates between the two walls 9 of the housing 10. On the walls 9, the poles 1a, 1b of the magnetic Unit 1 attached.
  • There are several of the matrix frame 2 segments filled with the matrix 17 are represented by which are six in the area of influence of the magnetic field of the magnetic Unit 1 are located.
  • the solids-laden fluid is in through the inflow line 6 in the housing 10 and the matrix frame 2 initiated. It flows through successively the segments between the inflow line 6 and the drain line 7, the fluid alternating the gap 8a on the first 9a and on the second 9b wall of the housing 10 flows through.
  • the edges 13 of the partitions 4 (Fig. 1) are with a means of sealing, here sealing lips made of Teflon, so that in the space between the poles 1a, 1b the side of the respective partition opposite the gap 8a lies tightly against the inner wall 9a or 9b of the housing 10.
  • the sealing lips lie outside this space the partition walls on both inner walls 9a, 9b of the housing 10 and thereby close the relevant segments tightly. In the area of the space have the inner housing walls 9a, 9b indentations, which cause that between the sealing lips and one of the two inner housing walls 9a and 9b the gap 8a occurs.
  • the matrix 17 is loaded with the solids while the fluid freed from the solids through the device the drain line 7 leaves.
  • the flushing device 16 the is arranged outside the magnetic field, the matrix 17th regenerated again, d. H. freed from the accumulated solids.
  • FIG. 3 shows an alternative to the embodiment in FIG. 2.
  • the inner walls of the housing have no depressions here on; rather, they are shaped like wavy lines, whereby the bulges corresponding to the recesses 15 Stand gap. This achieves the same effect as with the embodiment shown in FIG.
  • the remaining reference numbers have the same meaning as in FIGS. 1 and 2.
  • the first inner wall 9a is in the embodiment shown in Fig. 2.
  • the flushing device 16 is also shown.
  • Fig. 5 shows the second inner wall 9b in the embodiment according to Fig. 2.
  • 6 and 7 are two alternative embodiments shown for the derivation 7.
  • the derivatives are through one of the two poles, pole 1a.
  • This embodiment has the advantage that a higher one in the area of the leads Magnetic field prevails and thus the risk of accidental Detachment of the solids is significantly reduced. Similar Embodiments can also be in the area of the feed line 6 be used.
  • the embodiment of the high gradient magnetic separator shown in FIGS. 1 and 2 was with a matrix diameter of 500 mm.
  • the matrix was in 40 segments in one Dimensions of approx. 80 x 35 x 40 mm divided.
  • the speed of rotation the matrix was 1 revolution per 20 minutes.
  • the flux density used was approximately 0.57 Tesla, the volume flow was 1 L / min.
  • the phosphate concentration in the feed was 10 mg P / l.
  • the initial turbidity became about 50 turbidity units Formazin (FEF) determined.
  • FEF Formazin

Abstract

The two poles of the magnetic unit (1) form an intermediate space between them, in which a homogeneous magnetic field is produced. A matrix frame (2) is set in rotation around an axis (3) and at least partly encloses a ring-shaped inner space divided into segments (5) by dividing walls (4). The segments of the inner space, as the result of the rotation, are fed one after the other through the intermediate space. At least one inflow conduit (6) and an outflow conduit (7) are provided, with the aid of which the fluid can be conducted through at least one segment of the ring-shaped inner space located in the intermediate space.

Description

Die Erfindung betrifft einen Hochgradienten-Magnetabscheider gemäß dem Oberbegriff des ersten Patentanspruchs.The invention relates to a high gradient magnetic separator according to the preamble of the first claim.

Ein solcher Hochgradienten-Magnetabscheider ist aus der US-3,920,543 bekannt. Diese Vorrichtung weist einen drehbaren, ringförmigen Matrixrahmen auf, der horizontal angeordnet und radial in Segmente unterteilt ist. Die Segmente sind mit Füllkörpern, etwa mit Stahlwolle oder Kugeln gefüllt. Wird der Matrixrahmen in eine Drehung um seinen Mittelpunkt versetzt, passiert jedes Segment nacheinander mehrere magnetische Einheiten, die aus zwei Polen bestehen, zwischen denen sich der Matrixrahmen bei seiner Drehung bewegt. Zwischen den Polen wird ein homogenes Magnetfeld erzeugt. Die magnetischen Einheiten können z. B. aus Permanentmagneten oder elektrischen Spulen bestehen. Im Bereich der magnetischen Einheiten wird ein feststoffhaltiges Fluid über eine Zuflußleitung von oben in das darunter liegende Segment geleitet, wobei infolge des angelegten Magnetfelds para- oder schwach ferromagnetische Feststoffe an den Füllkörpern abgeschieden werden. Das von den Feststoffen befreite Fluid fließt über eine Abflußleitung nach unten ab. Die Füllkörper werden nachfolgend in mehreren außerhalb des Magnetfelds befindlichen Spüleinrichtungen wieder regeneriert.Such a high gradient magnetic separator is known from US 3,920,543 known. This device has a rotatable, ring-shaped matrix frame arranged horizontally and is divided radially into segments. The segments are with packing, filled with steel wool or balls. Will the matrix frame rotated around its center, each segment passes several magnetic units in succession, which consist of two poles, between which the Matrix frame moves as it rotates. Between the poles a homogeneous magnetic field is generated. The magnetic units can e.g. B. from permanent magnets or electrical Coils exist. In the field of magnetic units a fluid containing solids via an inflow line from above directed into the underlying segment, whereby due to the applied magnetic field para- or weakly ferromagnetic Solids are deposited on the packing. That of the Fluid freed from solids flows in via a drain line down from. The packing is subsequently used in several outside of the magnetic field flushing devices regenerated again.

Bei diesem Hochgradienten-Magnetabscheider stehen die Zu- und Abflußleitungen für das Fluid übereinander. Das Fluid befindet sich nur für kurze Zeit im Einflußbereich des Magnetfelds, so daß die Abscheidewirkung nicht optimal ist.With this high gradient magnetic separator, the inlet and Drain lines for the fluid one above the other. The fluid is there only in the area of influence of the magnetic field for a short time, so that the separation effect is not optimal.

Einen Überblick über die magnetische Abscheidung von in Fluiden suspendierten Festkörpern findet sich in J. Svoboda: "Magnetic Methods for the Treatment of Minerals", Developments in Mineral Processing, 8, Elsevier Amsterdam - Oxford - New York - Tokyo 1987. Auf den Seiten 158 bis 194 werden verschiedene Hochgradienten-Magnetabscheider, unter anderem auch der oben beschriebene, eingehend erläutert.An overview of the magnetic deposition of in Fluid suspended solids can be found in J. Svoboda: "Magnetic Methods for the Treatment of Minerals", Developments in Mineral Processing, 8, Elsevier Amsterdam - Oxford - New York - Tokyo 1987. On pages 158 to 194 various High gradient magnetic separator, including the one described in detail above.

Ein weiterer drehbarer Hochgradienten-Magnetabscheider wird in der EP 0 429 700 A1 beschrieben. Dieser Magnetabscheider enthält einen ringförmigen, mit Stahlwolle gefüllten Behälter, der im Querschnitt u-förmig ist und durch eine Trennwand, die am Boden des u-Profils mit Öffnungen versehen ist, in einen äußeren und einen inneren Bereich geteilt wird. Der Behälter befindet sich in einem homogenen Magnetfeld, das durch Permanentmagnete und magnetisierbare Einbauten erzeugt wird. Das zu reinigende Fluid durchläuft zuerst den äußeren Bereich des Behälters, passiert dann die Öffnungen in der Trennwand und fließt in den inneren Bereich des Behälters, wobei Feststoffanteile zurückgehalten werden. Danach verläßt das gereinigte Fluid die Vorrichtung.Another rotatable high gradient magnetic separator is in EP 0 429 700 A1. This magnetic separator contains an annular container filled with steel wool, which is U-shaped in cross section and by a partition that is provided with openings at the bottom of the u-profile, in one outer and an inner area is shared. The container is in a homogeneous magnetic field created by permanent magnets and magnetizable internals is generated. That too cleaning fluid first passes through the outer area of the container, then passes through the openings in the partition and flows into the inner area of the container, taking solid particles be held back. Then the cleaned leaves Fluid the device.

Gegenüber der eingangs genannten Vorrichtung hat dieser Hochgradienten-Magnetabscheider den Vorteil, daß der Weg des Fluids innerhalb des Magnetfelds länger ist, so daß eine effektivere Abscheidung von Feststoffen möglich ist. Allerdings ist es nicht möglich, mehrere magnetische Einheiten in derselben Vorrichtung hintereinanderzuschalten. Der Hauptnachteil ist jedoch, daß die Vorrichtung nicht kontinuierlich betrieben werden kann, denn der Zwischenraum befindet sich dauernd im Bereich des Magnetfelds zwischen den Polen der magnetischen Einheit. Deshalb muß die beladene Stahlwolle mechanisch aus dem Bereich ausgeschleust werden.Compared to the device mentioned at the beginning, this has a high gradient magnetic separator the advantage that the way of Fluid within the magnetic field is longer, making it more effective Separation of solids is possible. Indeed it is not possible to have multiple magnetic units in the same To connect the device in series. The main disadvantage is, however, that the device is not operated continuously can be, because the gap is constantly in the Area of the magnetic field between the poles of the magnetic Unit. Therefore the loaded steel wool has to be mechanically be diverted from the area.

Aufgabe der Erfindung ist, eine kontinuierlich arbeitende Vorrichtung der eingangs genannten Art vorzuschlagen, bei der der Weg des Fluids innerhalb des Magnetfelds größer ist als bei den bekannten Vorrichtungen, so daß eine effektivere Feststoffabtrennung möglich ist. Die Vorrichtung soll gleichzeitig eine Hintereinanderschaltung mehrerer magnetischer Einrichtungen ermöglichen. The object of the invention is a continuously operating device to propose the type mentioned at the beginning, in which the Path of the fluid within the magnetic field is larger than at the known devices, so that a more effective solid separation is possible. The device is intended to operate simultaneously a series connection of several magnetic devices enable.

Die Aufgabe wird durch das im Kennzeichen des ersten Patentanspruchs beschriebene Merkmal gelöst. In den weiteren Ansprüchen sind bevorzugte Ausgestaltungen des erfindungsgemäßen Hochgradienten-Magnetabscheiders angegeben.The object is achieved by the in the characterizing part of the first claim described feature solved. In the other claims are preferred embodiments of the invention High gradient magnetic separator specified.

Ein wesentlicher Vorzug des erfindungsgemäßen Hochgradienten-Magnetabscheiders ist, daß der Fluidstrom innerhalb des Magnetfelds nicht nur einmal wie bei der oben genannten EP 0 429 700 A1, sondern mehrfach umgelenkt werden kann, so daß sich insgesamt ein wesentlich längerer Weg innerhalb des Magnetfelds und damit eine bessere Feststoffabscheidung erzielen läßt. Der Fluidstrom wird dabei nicht radial, sondern wie in der eingangs genannten US-3,920,543 zirkular geführt, so daß wie bei dieser Vorrichtung mehrere magnetische Einrichtungen hintereinandergeschaltet werden können.An essential advantage of the high gradient magnetic separator according to the invention is that the fluid flow within the magnetic field not just once as in EP 0 429 mentioned above 700 A1, but can be redirected several times, so that overall a much longer path within the magnetic field and thus achieve a better solids separation leaves. The fluid flow is not radial, but as in of the above-mentioned US 3,920,543 performed in a circular manner, so that as in this device, several magnetic devices can be connected in series.

Erfindungsgemäß ist ein Matrixrahmen mit einem ringförmigen Innenraum vorgesehen, der durch radial angeordnete Trennwände in mehrere Segmente aufgeteilt wird. Die Zahl der Segmente und damit der Trennwände bestimmen die Länge des Wegs des Fluids im Zwischenraum. Über jeweils eine Öffnung sind zwei benachbarte Segmente miteinander verbunden. Wesentlich ist, daß die Öffnungen nicht jeweils an den selben Stellen, sondern alternierend an einer ersten und einer zweiten, der ersten nicht gegenüberliegenden Stelle im Bereich der Trennwand angebracht sind. Auf diese Weise kann der Weg des Fluids beträchtlich verlängert werden. Die magnetische Einheit hat eine Breite, die der Breite von mindestens zwei Segmenten entspricht, so daß der in Art einer Wellenlinie verlaufende Weg des Fluids durch mindestens zwei der Segmente innerhalb des Magnetfelds liegt.According to the invention is a matrix frame with an annular Interior provided by radially arranged partitions is divided into several segments. The number of segments and thus the partition walls determine the length of the path of the fluid in the space. There are two adjacent ones via one opening each Segments connected to each other. It is essential that the Openings not in the same places, but alternately on a first and a second, the first not opposite point in the area of the partition attached are. This way the path of the fluid can be considerable be extended. The magnetic unit has a width that corresponds to the width of at least two segments, so that the fluid-like path of the fluid through at least two of the segments within the magnetic field lies.

Die Segmente sind mit einer Matrix mit großer Oberfläche, etwa mit Stahlwolle, Drahtnetzen oder profilierten Metallplatten gefüllt. Das Material der Matrix soll das magnetische Feld bündeln. Der Hochgradienten-Magnetabscheider enthält außerdem eine Spülvorrichtung, mit der die beladene Matrix regeneriert werden kann. Die Spülvorrichtung befindet sich außerhalb des Magnetfelds und besteht aus einem Zu- und einem Abfluß, die in der Weise zueinander stehen, daß jeweils nur ein einziges Segment mit der Spülvorrichtung regeneriert wird.The segments are with a matrix with a large surface, for example with steel wool, wire mesh or profiled metal plates filled. The material of the matrix is said to be the magnetic field bundle up. The high gradient magnetic separator also contains a flushing device with which the loaded matrix regenerates can be. The flushing device is outside the Magnetic field and consists of an inflow and an outflow, which in are related to each other in such a way that only one segment at a time is regenerated with the flushing device.

Vorzugsweise wird in die Trennwände keine gesonderte Öffnung eingebracht, sondern die Größe der Trennwände wird so gewählt, daß sie mit einer den Innenraum begrenzenden Wand einen Spalt bilden. Beispielsweise kann der Matrixrahmen einen Torus darstellen, der mit Mitteln zum Befestigen an einer Achse, etwa mit zwei oder mehr Speichen, versehen ist. Bei liegender Stellung des Torus lassen die erste, dritte, fünfte etc. Trennwand zur oberen Wand des Torus einen Spalt frei, während bei jeder zweiten, vierten, sechsten etc. Trennwand der Spalt zwischen zwischen der Trennwand und der unteren Wand des Torus vorhanden ist.There is preferably no separate opening in the partition walls introduced, but the size of the partition walls is chosen so that they have a gap with a wall delimiting the interior form. For example, the matrix frame can represent a torus, the with means for attachment to an axis, such as with two or more spokes. In a lying position of the torus leave the first, third, fifth etc. partition a gap free to the top wall of the torus, while at each second, fourth, sixth etc. partition the gap between between the partition and the lower wall of the torus is.

Besonders bevorzugt wird jedoch eine Ausführungsform, bei der der Innenraum nicht vollständig durch den Matrixrahmen begrenzt wird. Bei dieser Ausführungsform begrenzt der Matrixrahmen den Innenraum nur an zwei gegenüberliegenden Seiten. Der Matrixrahmen ist hier in ein Gehäuse integriert, dessen Innenwände die zwei nicht vom Matrixrahmen begrenzten Seiten des Innenraums abschließen.However, an embodiment in which the interior is not completely limited by the matrix frame becomes. In this embodiment, the matrix frame delimits the interior only on two opposite sides. The matrix frame is integrated into a housing, the Inside walls the two sides not delimited by the matrix frame complete the interior.

Zur näheren Erläuterung der Erfindung wird diese Ausführungsform im folgenden anhand von Figuren näher erläutert.This embodiment is used to explain the invention in more detail explained in more detail below with reference to figures.

Es zeigen:

  • Fig. 1 eine teilweise (Bruchlinie B) aufgeschnittene Darstellung einer Ausführungsform des Hochgradienten-Magnetabscheiders;
  • Fig. 2 eine Schnittdarstellung (Schnitt A-A in Fig. 1);
  • Fig. 3 eine weitere Schnittdarstellung;
  • Fig. 4 die erste innere Wand des Gehäuses;
  • Fig. 5 die zweite innere Wand des Gehäuses;
  • Fig. 6 eine Schnittdarstellung mit Zuflußleitung;
  • Fig. 7 eine weitere Schnittdarstellung mit Zuflußleitung.
    • Show it:
  • Fig. 1 is a partially (broken line B) cutaway representation of an embodiment of the high gradient magnetic separator;
  • Fig. 2 is a sectional view (section AA in Fig. 1);
  • 3 shows a further sectional illustration;
  • 4 shows the first inner wall of the housing;
  • 5 shows the second inner wall of the housing;
  • Fig. 6 is a sectional view with inflow line;
  • Fig. 7 shows a further sectional view with inflow line.

    • In Fig. 1 ist die Ausführungsform des Hochgradienten-Magnetabscheiders in Aufsicht dargestellt, wobei das Gehäuse 10 entlang der Bruchlinie B aufgeschnitten ist. Die Vorrichtung weist eine einzige magnetische Einheit 1 auf. Im aufgebrochenen Teil ist der Matrixrahmen 2 erkennbar, der aus einer äußeren 12 und einer inneren 11 ringförmigen Wand besteht, die durch radial angeordnete Trennwände 4 miteinander verbunden sind. Der Matrixrahmen 2 ist um die Achse 3 in dem Gehäuse 10 drehbar. Bei der Drehung werden die Segmente 4 nacheinander durch den Zwischenraum, den die beiden Pole 1a, 1b (siehe Fig. 2) der magnetischen Einheit 1 miteinander bilden, hindurchgeführt. In das Gehäuse 10 ist eine Spülvorrichtung 16 eingelassen, der zum Regenerieren des Matrixmaterials 17 (siehe Fig. 2) in den Segmenten 5 dient. In der Aufsicht ist die Spülmittelzuleitung 16a sichtbar.In Fig. 1 is the embodiment of the high gradient magnetic separator shown in supervision, the housing 10 is cut along the fault line B. The device has a single magnetic unit 1. Im broken Part of the matrix frame 2 can be seen, which consists of a outer 12 and an inner 11 annular wall, which connected to each other by radially arranged partitions 4 are. The matrix frame 2 is about the axis 3 in the housing 10 rotatable. When rotating, the segments 4 are successively through the space between the two poles 1a, 1b (see Fig. 2) form the magnetic unit 1 together, passed. A flushing device 16 is embedded in the housing 10, which is used to regenerate the matrix material 17 (see Fig. 2) serves in segments 5. The detergent supply line is under supervision 16a visible.

    Fig. 2 zeigt eine Schnittdarstellung der Ausführungsform des Hochgradienten-Magnetabscheiders entlang der Linie A-A (Fig. 1). Der Matrixrahmen 2 dreht sich zwischen den beiden Wänden 9 des Gehäuses 10. Auf den Wänden 9 sind die Pole 1a, 1b der magnetischen Einheit 1 angebracht. Vom Matrixrahmen 2 sind mehrere mit der Matrix 17 gefüllte Segmente dargestellt, von denen sich sechs im Einflußbereich des Magnetfeldes der magnetischen Einheit 1 befinden.Fig. 2 shows a sectional view of the embodiment of the High gradient magnetic separator along the line A-A (Fig. 1). The matrix frame 2 rotates between the two walls 9 of the housing 10. On the walls 9, the poles 1a, 1b of the magnetic Unit 1 attached. There are several of the matrix frame 2 segments filled with the matrix 17 are represented by which are six in the area of influence of the magnetic field of the magnetic Unit 1 are located.

    Das feststoffbeladene Fluid wird durch die Zuflußleitung 6 in das Gehäuse 10 und den Matrixrahmen 2 eingeleitet. Es durchströmt nacheinander die Segmente zwischen der Zuflußleitung 6 und der Abflußleitung 7, wobei das Fluid abwechselnd den Spalt 8a an der ersten 9a und an der zweiten 9b Wand des Gehäuses 10 durchströmt. Die Kanten 13 der Trennwände 4 (Fig. 1) sind mit einem Mittel zur Abdichtung, hier Dichtlippen aus Teflon, versehen, so daß in dem Zwischenraum zwischen den Polen 1a, 1b die dem Spalt 8a gegenüberliegende Seite der jeweiligen Trennwand dicht an der inneren Wand 9a oder 9b des Gehäuses 10 anliegt. Außerhalb dieses Zwischenraums liegen die Dichtlippen der Trennwände an beiden inneren Wänden 9a, 9b des Gehäuses 10 an und schließen dadurch die betreffenden Segmente dicht ab. Im Bereich des Zwischenraums haben die inneren Gehäusewände 9a, 9b auf Lücke stehende Vertiefungen, die bewirken, daß zwischen den Dichtlippen und einer der beiden inneren Gehäusewände 9a und 9b der Spalt 8a auftritt.The solids-laden fluid is in through the inflow line 6 in the housing 10 and the matrix frame 2 initiated. It flows through successively the segments between the inflow line 6 and the drain line 7, the fluid alternating the gap 8a on the first 9a and on the second 9b wall of the housing 10 flows through. The edges 13 of the partitions 4 (Fig. 1) are with a means of sealing, here sealing lips made of Teflon, so that in the space between the poles 1a, 1b the side of the respective partition opposite the gap 8a lies tightly against the inner wall 9a or 9b of the housing 10. The sealing lips lie outside this space the partition walls on both inner walls 9a, 9b of the housing 10 and thereby close the relevant segments tightly. In the area of the space have the inner housing walls 9a, 9b indentations, which cause that between the sealing lips and one of the two inner housing walls 9a and 9b the gap 8a occurs.

    Im Bereich des Magnetfelds findet die Abscheidung der para- oder schwach ferromagnetischen Feststoffe aus dem Fluid statt. Dabei wird die Matrix 17 mit den Feststoffen beladen, während das von den Feststoffen befreite Fluid die Vorrichtung durch die Abflußleitung 7 verläßt. Durch die Spülvorrichtung 16, die außerhalb des Magnetfelds angeordnet ist, wird die Matrix 17 wieder regeneriert, d. h. von den angelagerten Feststoffen befreit.In the area of the magnetic field, the para- or weakly ferromagnetic solids from the fluid instead. The matrix 17 is loaded with the solids while the fluid freed from the solids through the device the drain line 7 leaves. By the flushing device 16, the is arranged outside the magnetic field, the matrix 17th regenerated again, d. H. freed from the accumulated solids.

    Fig. 3 zeigt eine Alternative zu der Ausführungsform in Fig. 2. Die inneren Wände des Gehäuses weisen hier keine Vertiefungen auf; sie sind vielmehr wellenlinienartig geformt, wobei die Ausbuchtungen, die den Vertiefungen 15 entsprechen, auf Lücke stehen. Hiermit wird derselbe Effekt erzielt wie mit der in Fig. 2 gezeigten Ausführungsform. Die übrigen Bezugszeichen haben dieselbe Bedeutung wie in den Fig. 1 und 2.FIG. 3 shows an alternative to the embodiment in FIG. 2. The inner walls of the housing have no depressions here on; rather, they are shaped like wavy lines, whereby the bulges corresponding to the recesses 15 Stand gap. This achieves the same effect as with the embodiment shown in FIG. The remaining reference numbers have the same meaning as in FIGS. 1 and 2.

    In Fig. 4 ist die erste innere Wand 9a bei der Ausführungsform nach Fig. 2 dargestellt. Es befinden sich vier Vertiefungen 15 im Bereich des Zwischenraums zwischen den Polen 1a und 1b (Fig. 1). Außerdem ist die Spülvorrichtung 16 dargestellt.4, the first inner wall 9a is in the embodiment shown in Fig. 2. There are four depressions 15 in the area between the poles 1a and 1b (Fig. 1). The flushing device 16 is also shown.

    Fig. 5 zeigt die zweite innere Wand 9b bei der Ausführungsform nach Fig. 2. Im Bereich des Zwischenraums zwischen den Polen befinden sich 5 Vertiefungen 15, deren Zentren zu den Vertiefungen 15 in Fig. 4 auf Lücke stehen. Fig. 5 shows the second inner wall 9b in the embodiment according to Fig. 2. In the area of the space between the poles there are 5 wells 15, the centers of which are the wells 15 in Fig. 4 stand on gap.

    In den Fig. 6 und 7 sind zwei alternative Ausführungsformen für die Ableitung 7 dargestellt. Die Ableitungen werden durch einen der beiden Pole, Pol 1a, geführt. Diese Ausführungsform hat den Vorteil, daß im Bereich der Ableitungen ein höheres Magnetfeld vorherrscht und damit die Gefahr einer unbeabsichtigen Ablösung der Feststoffe deutlich reduziert wird. Ähnliche Ausführungsformen können auch im Bereich der Zuleitung 6 eingesetzt werden.6 and 7 are two alternative embodiments shown for the derivation 7. The derivatives are through one of the two poles, pole 1a. This embodiment has the advantage that a higher one in the area of the leads Magnetic field prevails and thus the risk of accidental Detachment of the solids is significantly reduced. Similar Embodiments can also be in the area of the feed line 6 be used.

    Versuchsbeispiel:Experimental example:

    Die in den Fig. 1 und 2 dargestellte Ausführungsform des Hochgradienten-Magnetseparators wurde mit einem Matrixdurchmesser von 500 mm gefertigt. Die Matrix war in 40 Segmente in einer Abmessung von ca. 80 x 35 x 40 mm unterteilt. Die Umdrehungsgeschwindigkeit der Matrix betrug 1 Umdrehung pro 20 Minuten. Die eingesetzte Flußdichte war ca. 0,57 Tesla, der Volumenstrom betrug 1 L/min. Die Posphatkonzentration im Zulauf war 10 mg P/l. Die Ausgangstrübung wurde zu ca. 50 Trübungseinheiten Formazin (FEF) bestimmt. Der Versuch zeigte, daß während der gesamten Versuchszeit von über 2 Stunden konstant niedrige Trübungswerte von im Mittel unter 4 FEF und Phosphatkonzentrationen unter 0,5 mg P/l erzielt werden konnten.The embodiment of the high gradient magnetic separator shown in FIGS. 1 and 2 was with a matrix diameter of 500 mm. The matrix was in 40 segments in one Dimensions of approx. 80 x 35 x 40 mm divided. The speed of rotation the matrix was 1 revolution per 20 minutes. The flux density used was approximately 0.57 Tesla, the volume flow was 1 L / min. The phosphate concentration in the feed was 10 mg P / l. The initial turbidity became about 50 turbidity units Formazin (FEF) determined. The experiment showed that during constant low over the entire test period of over 2 hours Turbidity values below 4 FEF on average and phosphate concentrations below 0.5 mg P / l could be achieved.

    Claims (5)

    Hochgradienten-Magnetabscheider zur kontinuierlichen Abtrennung para- oder schwach ferromagnetischer Feststoffe aus einem Fluid mit a) mindestens einer magnetischen Einheit (1) mit zwei in einem Abstand zueinander stehenden Polen (1a, 1b), die miteinander einen Zwischenraum bilden, in dem sich ein homogenes Magnetfeld erzeugen läßt, b) einem Matrixrahmen (2), der sich um eine Achse (3) in eine Drehung versetzen läßt und zumindest teilweise einen ringförmigen, durch Trennwände (4) in Segmente (5) abgeteilten Innenraum umschließt, wobei sich die Segmente (5) des Innenraums infolge der Drehung nacheinander durch den Zwischenraum führen lassen, c) mindestens jeweils einer Zufluß- (6) und einer Abflußleitung (7), mit deren Hilfe das Fluid durch mindestens ein sich im Zwischenraum befindliches Segment (5) des ringförmigen Innenraums geleitet werden kann, dadurch gekennzeichnet, daß
    die Breite der magnetischen Einheit (1) entlang dem Innenraum mindestens der Breite von zwei Segmenten (5) entspricht und und im Bereich des Zwischenraums jedes Segment (5) des ringförmigen Innenraums mit seinen benachbarten Segmenten (5) über jeweils eine Öffnung (8) verbunden ist, wobei die Öffnungen (8) alternierend an einer ersten und einer zweiten, der ersten nicht gegenüberliegenden Stelle angebracht sind.    High-gradient magnetic separator for the continuous separation of para- or weakly ferromagnetic solids from a fluid a) at least one magnetic unit (1) with two poles (1a, 1b) which are at a distance from one another and which together form an intermediate space in which a homogeneous magnetic field can be generated, b) a matrix frame (2) which can be set into rotation about an axis (3) and at least partially encloses an annular interior divided into segments (5) by partitions (4), the segments (5) of the interior being as a result of the rotation, let them pass through the space one after the other, c) at least one inflow (6) and one outflow line (7), with the aid of which the fluid can be passed through at least one segment (5) of the annular interior space located in the intermediate space, characterized in that
    the width of the magnetic unit (1) along the interior corresponds at least to the width of two segments (5) and and in the region of the interspace each segment (5) of the annular interior is connected to its adjacent segments (5) via an opening (8) , the openings (8) being arranged alternately at a first and a second position which is not opposite the first point.         Hochgradienten-Magnetabscheider nach Anspruch 1,
    dadurch gekennzeichnet, daß
    die Segmente (5) im Bereich des Zwischenraums durch solche Trennwände (4) gebildet werden, die abwechselnd an einer ersten und an einer zweiten den Innenraum begrenzenden Wand (9) einen Spalt (8a) bilden.     High gradient magnetic separator according to claim 1,
    characterized in that
    the segments (5) in the area of the intermediate space are formed by such partition walls (4) which alternately form a gap (8a) on a first and on a second wall (9) delimiting the interior.         Hochgradienten-Magnetabscheider nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, daß
    der Matrixrahmen (2) in ein Gehäuse (10) eingebaut ist und eine innere (11) und eine äußere (12) zylindermantelförmige Wandfläche aufweist, die über die Trennwände (4) miteinander verbunden sind, die erste und die zweite Wand (9) durch eine erste (9a) und eine zweite (9b) Innenwand des Gehäuses (10) gebildet wird, die Trennwände (4) an ihren auf Innenwände des Gehäuses (10) weisenden Bereichen Kanten (13) aufweisen, die mit Mitteln zur Abdichtung (14) gegenüber den Innenwänden (9a, 9b) versehen sind, und die Innenwände (9a, 9b) des Gehäuses (10) in der Weise ausgeformt sind, daß die Mittel zur Abdichtung (14) im Bereich des Zwischenraums abwechselnd die erste (9a) und die zweite (9b) Innenwand des Gehäuses (10) berühren und abwechselnd an der zweiten (9b) und der ersten (9a) Innenwand des Gehäuses (10) den Spalt (8a) bilden.    High gradient magnetic separator according to claim 1 or 2,
    characterized in that
    the matrix frame (2) is installed in a housing (10) and has an inner (11) and an outer (12) cylindrical wall surface, which are connected to one another via the partition walls (4), through the first and the second wall (9) a first (9a) and a second (9b) inner wall of the housing (10) is formed, the partition walls (4) have edges (13) on their areas facing the inner walls of the housing (10), which are provided with means for sealing (14) opposite the inner walls (9a, 9b), and the inner walls (9a, 9b) of the housing (10) are shaped in such a way that the means for sealing (14) in the region of the intermediate space alternately the first (9a) and the Touch the second (9b) inner wall of the housing (10) and alternately form the gap (8a) on the second (9b) and the first (9a) inner wall of the housing (10).         Hochgradienten-Magnetabscheider nach Anspruch 3,
    dadurch gekennzeichnet, daß in die Innenwände (9a, 9b) des Gehäuses (10) radial angebrachte Vertiefungen (15) eingebracht sind.    High gradient magnetic separator according to claim 3,
    characterized in that radially provided recesses (15) are made in the inner walls (9a, 9b) of the housing (10).         Hochgradienten-Magnetabscheider nach Anspruch 3 oder 4,
    dadurch gekennzeichnet, daß
    das Gehäuse eine Spülvorrichtung (16) bestehend aus einer Zu- und einer Abflußleitung aufweist, die außerhalb des Magnetfelds angebracht sind und einander auf der ersten und der zweiten Innenwand des Gehäuses gegenüberliegen.    High gradient magnetic separator according to claim 3 or 4,
    characterized in that
    the housing has a flushing device (16) consisting of an inlet and an outlet line, which are attached outside the magnetic field and are opposite one another on the first and the second inner wall of the housing.
    EP97111007A 1996-07-05 1997-07-02 High gradient magnetic separator Expired - Lifetime EP0815941B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19626999 1996-07-05
    DE19626999A DE19626999C1 (en) 1996-07-05 1996-07-05 High gradient magnet separator

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    Publication Number Publication Date
    EP0815941A1 true EP0815941A1 (en) 1998-01-07
    EP0815941B1 EP0815941B1 (en) 2000-12-06

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    AT (1) ATE197913T1 (en)
    DE (2) DE19626999C1 (en)

    Cited By (7)

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    EP1616627A1 (en) * 2004-07-16 2006-01-18 Forschungszentrum Karlsruhe GmbH High gradient magnetic separator
    CN100503048C (en) * 2005-12-30 2009-06-24 赣州金环磁选设备有限公司 Dry type vibratory high-gradient magnetic separator
    DE102008035695A1 (en) 2008-07-30 2010-02-04 Martin Lipsdorf Particle e.g. sensitive target particle, processing method for use in biotechnology field, involves deflecting magnetic field of permanent magnet between flow paths of magnetic field by impulse at magneto electric control element
    EP2366455A2 (en) * 2004-02-17 2011-09-21 E.I. Du Pont De Nemours And Company Magnetic field and field gradient enhanced centrifugation solid-liquid separations
    CN101884952B (en) * 2009-05-13 2011-12-28 中国地质科学院郑州矿产综合利用研究所 Wet-type permanent magnet vertical ring adjustable high-gradient strong magnetic separator
    CN103480488A (en) * 2013-07-24 2014-01-01 江苏旌凯中科超导高技术有限公司 A dry method rotation plate type superconducting magnetic separation system and application technology thereof
    WO2021111182A1 (en) * 2019-12-06 2021-06-10 AnuCell Biosystems Limited Torus reactor for a combined cell isolator and bioreactor

    Families Citing this family (3)

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    DE10117659C2 (en) * 2001-04-09 2003-07-17 Steinert Gmbh Elektromagnetbau High gradient magnetic filter and method for separating weakly magnetizable particles from liquid media
    CN101912817B (en) * 2010-08-16 2012-02-29 河南理工大学 Rotary disc type high-gradient permanent magnetic separator
    CN101947492B (en) * 2010-10-22 2012-02-29 河南理工大学 Permanent magnetic high-gradient comprehensive force field separator with disc structure

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    GB2174928A (en) * 1985-04-17 1986-11-19 Kloeckner Humboldt Deutz Ag Method and apparatus for matrix magnetic separations
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    Cited By (9)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP2366455A2 (en) * 2004-02-17 2011-09-21 E.I. Du Pont De Nemours And Company Magnetic field and field gradient enhanced centrifugation solid-liquid separations
    EP2366455A3 (en) * 2004-02-17 2011-12-21 E.I. Du Pont De Nemours And Company Magnetic field and field gradient enhanced centrifugation solid-liquid separations
    EP1616627A1 (en) * 2004-07-16 2006-01-18 Forschungszentrum Karlsruhe GmbH High gradient magnetic separator
    CN100503048C (en) * 2005-12-30 2009-06-24 赣州金环磁选设备有限公司 Dry type vibratory high-gradient magnetic separator
    DE102008035695A1 (en) 2008-07-30 2010-02-04 Martin Lipsdorf Particle e.g. sensitive target particle, processing method for use in biotechnology field, involves deflecting magnetic field of permanent magnet between flow paths of magnetic field by impulse at magneto electric control element
    CN101884952B (en) * 2009-05-13 2011-12-28 中国地质科学院郑州矿产综合利用研究所 Wet-type permanent magnet vertical ring adjustable high-gradient strong magnetic separator
    CN103480488A (en) * 2013-07-24 2014-01-01 江苏旌凯中科超导高技术有限公司 A dry method rotation plate type superconducting magnetic separation system and application technology thereof
    WO2021111182A1 (en) * 2019-12-06 2021-06-10 AnuCell Biosystems Limited Torus reactor for a combined cell isolator and bioreactor
    US11684871B2 (en) 2019-12-06 2023-06-27 AnuCell Biosystems Limited Torus reactor for a combined cell isolator and bioreactor

    Also Published As

    Publication number Publication date
    EP0815941B1 (en) 2000-12-06
    DE59702706D1 (en) 2001-01-11
    DE19626999C1 (en) 1997-08-21
    ATE197913T1 (en) 2000-12-15

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