EP1027161A1 - Method and device for wet-grinding and dispersing solids in fluids - Google Patents

Method and device for wet-grinding and dispersing solids in fluids

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Publication number
EP1027161A1
EP1027161A1 EP99938111A EP99938111A EP1027161A1 EP 1027161 A1 EP1027161 A1 EP 1027161A1 EP 99938111 A EP99938111 A EP 99938111A EP 99938111 A EP99938111 A EP 99938111A EP 1027161 A1 EP1027161 A1 EP 1027161A1
Authority
EP
European Patent Office
Prior art keywords
grinding
grinding chamber
rotor
chamber
hollow shaft
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
Application number
EP99938111A
Other languages
German (de)
French (fr)
Other versions
EP1027161B1 (en
Inventor
Eduard Nater
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.)
Buehler AG
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Buehler AG
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Filing date
Publication date
Application filed by Buehler AG filed Critical Buehler AG
Publication of EP1027161A1 publication Critical patent/EP1027161A1/en
Application granted granted Critical
Publication of EP1027161B1 publication Critical patent/EP1027161B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/168—Mills in which a fixed container houses stirring means tumbling the charge with a basket media milling device arranged in or on the container, involving therein a circulatory flow of the material to be milled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/161—Arrangements for separating milling media and ground material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/166—Mills in which a fixed container houses stirring means tumbling the charge of the annular gap type

Definitions

  • the invention relates to a method and a device for wet grinding of solid particles in liquids by means of an agitator mill consisting of at least one grinding chamber containing grinding media, at least one rotor, wherein the grinding chamber and the rotor can be set in rotation independently of one another by means of at least one drive and the grinding stock can be introduced into the grinding chamber from the outside via a hollow shaft or via a grinding chamber.
  • Such a method and such a device is known from DE-AS 12 23 236. It is an agitator ball mill in which the grinding material can be separated from the coarse material solely by the action of the centrifugal forces.
  • the regrind enters the settling chamber with separation of the coarse material and then exits through a fan alley.
  • cylindrical, axially extending or conical separating screens can also be used in an agitator trough above the stirring disks. With this arrangement, the regrind is separated from the agitator trough at several levels.
  • the regrind which is arranged through sieves, which are arranged above the highest stirring disks, looking upwards in the direction of arrow a, is finer milled than the regrind, which emerges from the grinding chamber through the sieves which are provided in the lowest level .
  • the agitator mill has a grinding vessel and an agitator rotor with a vertical rotor axis, between which there is a rotationally symmetrical grinding chamber containing grinding vessels.
  • the ground material is introduced into the grinding chamber through the inlet openings and moved radially outwards in a pump section which is arranged above the agitator rotor.
  • the ground material then runs around the outer circumference of the disk-shaped agitator rotor and is then generally radially inward again to form a circulation cut led.
  • a disadvantage of this embodiment is the long path of the millbase, from the inlet opening through the pump sections above the rotor, the calming sections below the rotor to either a sieve, which is arranged below the calming sections, or to the circulation section mentioned above.
  • the sieve arranged below the process zone can be blocked by the heavy coarse particles which have been separated from the bulk material flow.
  • the object of the present invention is to reduce the disadvantages of the prior art, i.e. Simplification of the process control, avoidance of the expensive cooling devices in the actual grinding device and the applicability to the widest possible spectrum of the material to be processed.
  • the object of the invention is in particular to optimize the pressing of the grinding media and thus to reduce the wear on all rotating parts. By optimizing the pressing, a high degree of grinding is also achieved.
  • the object is achieved in that the grinding media located in the grinding chamber are strongly compressed in the direction of increasing radius, the grinding material being opposed once from the outside to the remaining grinding media. flows through the body layer and loosens, and is then thrown out through outlet openings.
  • the inventors have shown that an optimally ground, homogeneous ground material will emerge from the grinding chamber if the centrifugal force of the grinding chamber, if applicable, the compression of the grinding media and the flow of the ground material are coordinated with one another in such a way that they are in equilibrium. It has also proven to be advantageous to arrange separating devices in the grinding chamber below the outlet openings. The openings of the sieves are adjusted so that only the ground material with the predetermined diameter distributions is conveyed and that the spherical grinding bodies remain in the conical area of the grinding chamber.
  • the centrifugal force of the grinding chamber is a function of the speed of the drum and is regulated depending on the torque of the shaft.
  • the flow force of the millbase is a function of the volume flow and viscosity of the millbase and is also regulated as a function of the torque of the shaft.
  • the separating device is advantageously located in the centrifugal field, so that coarse particles that are not thrown outwards automatically remain in the centrifugal field and are included in the comminution process. This effect cannot be achieved with the screen arrangement in DE 39 43 765 C2, which is provided below the process zone.
  • the separating device is expediently arranged in a rotating manner on the grinding chamber, possibly on the rotor.
  • the agitator mill is advantageously arranged directly in a collecting container for the ground material or connected to a line arrangement.
  • a centrifugal field is expediently formed in the grinding chamber, the dimensions of which are such that the ratio of its radial length to the axial height is in the range greater than 4: 1.
  • the grinding chamber is advantageously arranged standing vertically or lying horizontally. Further advantageous configurations result from the subclaims and their combinations
  • FIG. 1 shows a sectional drawing of the Ruhrwerk mill.
  • FIG. 2 shows an example of a separating device.
  • FIG. 3 schematically shows a centrifugal field in a grinding chamber.
  • FIG. 4 shows a line arrangement of the device according to the invention.
  • FIG. 5 shows another example of a separating device
  • the agitator mill consists of a grinding chamber 1 with a rotor 2.
  • the grinding chamber 1 is driven via a drive 8 'and a hollow shaft 5'.
  • the grinding chamber 1 is filled with grinding bodies 3.
  • the ground material 4 passes through the hollow shaft 5, through the lateral openings 39 of the hollow shaft 5, through the cavities 26 in the rotor 2 into the grinding chamber 1.
  • the ground material 4 then reaches the circumference of the rotor 2 through the grinding bodies 3 into the interior of the grinding chamber 1.
  • At the upper end of the grinding chamber 1 there are openings 11 which serve as outlet openings for the material to be treated.
  • shielding covers 30 are attached via the openings 11, which extend to the circumference of the grinding chamber 1, so that the ground material can spray outwards as a result of the centrifugal forces.
  • Separating devices (sieves) 110 are arranged on the inner wall of the grinding chamber 1 below the outlet openings 11. These separation devices 110 lie in a centrifugal field 70, which is formed in the grinding chamber 1 between the inner wall of the grinding chamber and the outer wall of the rotor 2.
  • the openings of the sieves are matched so that only the regrind 4 with the predetermined ones Diameter distributions is required, with the spherical grinding media 3 and the coarse particles remaining in the grinding media layer in the grinding chamber. The coarse particles are thus automatically included in the comminution process
  • the entire Ruhrwerk mill is arranged directly in a collecting container 14. This can be provided with cooling (not shown).
  • the regrind 4 is fed into the circuit via a line from the collecting container 14 through the process
  • FIG. 2 shows a further embodiment of the present invention.
  • the ground material 4 arrives in the grinding chamber 1 via the inlet openings 122 and leaves the grinding chamber through the lateral openings 39 on the hollow shaft 5.
  • the separating devices 110 are rotatably arranged on the rotor 2 and inside the grinding chamber
  • FIG. 3 schematically shows the centrifugal field 70 which is formed between the grinding chamber 1 and the rotor 2.
  • the centrifugal force of the grinding chamber Z if applicable, the compression of the grinding media Kv and the flow of the grinding stock K st are coordinated with one another in such a way that they are in equilibrium
  • FIG. 4 shows a further embodiment of the Ruhrwerk mill, which is connected to a line arrangement 121.
  • the outlet openings 11 on the grinding chamber wall and the separating devices 110 are provided above and below the rotor 2.
  • a circular mode of operation is possible, which is indicated by the directional arrows in FIG 4 is indicated
  • Ruhr tools 6 may be present on the grinding chamber 1 and on the rotor 2
  • FIG. 5 shows a Ruhrwerk mill with a combined separating device.
  • the grinding media 3 and the grinding stock 4 are separated from one another in the grinding chamber 1 either by means of a friction gap 1 1 1, 112 or a combination of the friction gap and rotating sieve (1 1 1, 1 12, 1 10)
  • the width of the friction gap is adjusted so that only the ground material 4 with the predetermined diameter distributions is required, the spherical grinding bodies 3 and the coarse particles remaining in the grinding body layer in the grinding chamber As a result of the centrifugal force, the ground material to be treated is sprayed outwards through the opening 114 at the lower end of the grinding chamber 1.
  • the width of the friction gap can be chosen to be zero and the diameter of the grinding media, the friction gap being able to run axially or radially inside.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Abstract

The invention relates to a method and device for wet-grinding and dispersing solid particles in fluids, by means of an agitating mill comprising at least one milling chamber (1) housing the milling bodies (3) and at least one rotor (2). The product to be ground (4) is introduced in said milling chamber from the outside, directly or through a hollow shaft (5), and bulk-transferred in a single operation, from the inside to the outside, through the milling bodies (3). Then, it is driven to cross the remaining layer of milling bodies, in reverse direction, from the outside to the inside, and is finally transported through outlet openings (11). The inventive device is characterised in that the centrifugal force existing in the milling chamber, and possibly pressing applied by the milling bodies and flowing of said product to be ground are balanced. At least one separation device (110) is provided in the milling chamber (1) in the region of the outlet openings(11).

Description

Verfahren und Vorrichtung zum Nassmahlen und Dispergieren von Feststoffpartikeln in Flüssi gkeiten Method and device for wet grinding and dispersing solid particles in liquids
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Nassmahlen von Feststoffpartikeln in Flüssigkeiten mittels einer Rührwerksmühle bestehend aus mindestens einer Mahlkörper enthaltenden Mahlkammer, mindestens einem Rotor, wobei die Mahl- kammer und der Rotor mittels mindestens eines Antriebs unabhängig voneinander in Rotation versetzbar sind und das Mahlgut über eine Hohlwelle in die Mahlkammer oder via Mahlkammer von aussen in die Mahlkammer einleitbar ist.The invention relates to a method and a device for wet grinding of solid particles in liquids by means of an agitator mill consisting of at least one grinding chamber containing grinding media, at least one rotor, wherein the grinding chamber and the rotor can be set in rotation independently of one another by means of at least one drive and the grinding stock can be introduced into the grinding chamber from the outside via a hollow shaft or via a grinding chamber.
Ein solches Verfahren und eine solche Vorrichtung ist aus der DE-AS 12 23 236 be- kannt. Es handelt sich hierbei um eine Rührwerkskugelmühle, in der die Trennung des Mahlgutes vom Grobgut allein durch die Wirkung der Zentrifugalkräfte möglich ist. Das Mahlgut tritt unter Abscheidung des Grobgutes in eine Beruhigungskammer ein und danach durch eine Fantgasse aus. Statt der vorgesehenen Zentrifugalscheidung können auch oberhalb der Rührscheiben in einem Rührwerktrog zylindrische, axial verlau- fende oder konisch gestaltete Trennsiebe verwendet werden. Bei dieser Anordnung wird das Mahlgut an mehreren Ebenen innerhalb des Rührwerktrogs aus diesem ausgeschieden. Demzufolge wird das Mahlgut, welches durch Siebe, die oberhalb der höchsten Rührscheiben, in Richtung des Pfeiles a nach oben gesehen, angeordnet sind, feiner vermählt als das Mahlgut, welches durch die Siebe, die in der untersten Ebene vorgesehen sind, aus der Mahlkammer austritt.Such a method and such a device is known from DE-AS 12 23 236. It is an agitator ball mill in which the grinding material can be separated from the coarse material solely by the action of the centrifugal forces. The regrind enters the settling chamber with separation of the coarse material and then exits through a fan alley. Instead of the intended centrifugal separation, cylindrical, axially extending or conical separating screens can also be used in an agitator trough above the stirring disks. With this arrangement, the regrind is separated from the agitator trough at several levels. As a result, the regrind, which is arranged through sieves, which are arranged above the highest stirring disks, looking upwards in the direction of arrow a, is finer milled than the regrind, which emerges from the grinding chamber through the sieves which are provided in the lowest level .
Ein weiteres Verfahren und eine weitere Vorrichtung der erfindungsgemässen Gattung ist in der DE 39 43 765 C2 beschrieben. Die Rührwerksmühle weist einen Mahlbehälter und einen Rührwerksrotor mit vertikaler Rotorachse, zwischen denen sich ein Mahlbe- hälter enthaltender, rotationssymetrischer Mahlraum befindet, auf. Das Mahlgut wird in den Mahlraum durch die Einlassöffnungen eingeführt und in einem Pumpenabschnitt, der oberhalb des Rührwerksrotors angeordnet ist, radial nach aussen bewegt. Danach läuft das Mahlgut um den Aussenumfang des scheibenförmigen Rührwerksrotors herum durch und wird anschliessend allgemein wieder radial nach innen zu einem Umlaufab- schnitt geführt. Nachteilig bei dieser Ausführungsform ist der lange Weg des Mahlguts, von der Einlassöffnung durch die Pumpenabschnitte oberhalb des Rotors, die Beruhigungsabschnitte unterhalb des Rotors bis entweder zu einem Sieb, der unterhalb der Beruhigungsabschnitte angeordnet ist, oder zu dem oben erwähnten Umlaufabschnitt. Das unterhalb der Verfahrenszone angeordnete Sieb kann durch die schweren, aus dem Schüttgutstrom ausgeschiedenen Grobteilchen verstopft werden.Another method and another device of the genus according to the invention is described in DE 39 43 765 C2. The agitator mill has a grinding vessel and an agitator rotor with a vertical rotor axis, between which there is a rotationally symmetrical grinding chamber containing grinding vessels. The ground material is introduced into the grinding chamber through the inlet openings and moved radially outwards in a pump section which is arranged above the agitator rotor. The ground material then runs around the outer circumference of the disk-shaped agitator rotor and is then generally radially inward again to form a circulation cut led. A disadvantage of this embodiment is the long path of the millbase, from the inlet opening through the pump sections above the rotor, the calming sections below the rotor to either a sieve, which is arranged below the calming sections, or to the circulation section mentioned above. The sieve arranged below the process zone can be blocked by the heavy coarse particles which have been separated from the bulk material flow.
In der DE 196 14 295, von der die vorliegende Erfindung ausgeht, wird das Mahlgut nach Durchströmen der Mahlkörperschicht über Auslassöffnungen aus der Mahlkam- mer weggeschleudert und gelangt anschliessend in einen Auffangbehälter. An der Au- ssenseite der Mahlkammer sind über den Auslassöffnungen abschirmende, zu der Behälterwand geöffnete Abdeckungen angebracht, die bis zum Umfang der Mahlkammer reichen, so dass das Mahlgut infolge der Zentrifugalkräfte nach aussen spritzen kann. Als nachteilig hat sich erwiesen, dass infolge der starken Zentrifugalkräfte innerhalb der Mahlkammer zu grosser Verschleiss eintritt.In DE 196 14 295, from which the present invention is based, the ground material is thrown out of the grinding chamber after flowing through the grinding body layer via outlet openings and then reaches a collecting container. On the outside of the grinding chamber there are shielding covers which are open to the container wall and which extend to the periphery of the grinding chamber so that the ground material can spray outwards due to the centrifugal forces. It has proven to be disadvantageous that excessive wear occurs within the grinding chamber as a result of the strong centrifugal forces.
In der DE 44 19 919 ist eine Rührwerksmühle mit einer äusseren Trennvorrichtung in einem Wandbereich der Mahlkammer und einer weiteren inneren Trennvorrichtung im Bereich einer zentralen Öffnung im unteren Bereich der Mahlkammer beschrieben. Als nachteilig hat sich erwiesen, der grosse konstruktive Aufwand, sowie eine Verkleinerung des effektiven Zentrifugalfeldes.DE 44 19 919 describes an agitator mill with an outer separating device in a wall area of the grinding chamber and a further inner separating device in the area of a central opening in the lower area of the grinding chamber. It has proven to be disadvantageous that the great design effort and a reduction in the effective centrifugal field.
Die Aufgabe der vorliegenden Erfindung liegt darin die Nachteile des Standes der Technik zu verringern, d.h. Vereinfachung der Prozessführung, Vermeidung der teuren Kühlvorrichtungen in der eigentlichen Mahlvorrichtung und die Anwendbarkeit auf ein möglichst breites Spektrum des zu verarbeitenden Mahlgutes.The object of the present invention is to reduce the disadvantages of the prior art, i.e. Simplification of the process control, avoidance of the expensive cooling devices in the actual grinding device and the applicability to the widest possible spectrum of the material to be processed.
Ferner liegt die Aufgabe der Erfindung insbesondere darin, die Verpressung der Mahlkörper zu optimieren und damit den Verschleiss aller sich drehenden Teile zu reduzie- ren. Durch Optimieren der Verpressung wird auch ein hoher Vermahlungsgrad erreicht.Furthermore, the object of the invention is in particular to optimize the pressing of the grinding media and thus to reduce the wear on all rotating parts. By optimizing the pressing, a high degree of grinding is also achieved.
Die Aufgabe wird erfindungsgemäss dadurch gelöst, dass die in der Mahlkammer befindlichen Mahlkörper in Richtung steigenden Radius stark komprimiert werden, wobei das Mahlgut einmalig entgegengesetzt von aussen nach innen die verbleibende Mahl- körperschicht durchströmt und lockert, und darauf über Auslassöffnungen nach aussen geschleudert wird. Die Erfinder haben aufgrund zahlreicher Untersuchungen erwiesen, dass ein optimal zermahltes, homogenes Mahlgut aus der Mahlkammer austreten wird, wenn die Zentrifugalkraft der Mahlkammer ggf. die Verpressung der Mahlkörper und die Strömung des Mahlgutes so miteinander abgestimmt sind, dass sie im Gleichgewicht stehen. Ferner hat sich als vorteilhaft erwiesen, in der Mahlkammer unterhalb der Auslassöffnungen Trennvorrichtungen anzuordnen. Die Öffnungen der Siebe werden so abgestimmt, dass nur das Mahlgut mit den vorherbestimmten Durchmesserverteilungen gefördert wird, und dass die kugeligen Mahlkörper in dem konischen Bereich der Mahl- kammer verbleiben.According to the invention, the object is achieved in that the grinding media located in the grinding chamber are strongly compressed in the direction of increasing radius, the grinding material being opposed once from the outside to the remaining grinding media. flows through the body layer and loosens, and is then thrown out through outlet openings. Based on numerous investigations, the inventors have shown that an optimally ground, homogeneous ground material will emerge from the grinding chamber if the centrifugal force of the grinding chamber, if applicable, the compression of the grinding media and the flow of the ground material are coordinated with one another in such a way that they are in equilibrium. It has also proven to be advantageous to arrange separating devices in the grinding chamber below the outlet openings. The openings of the sieves are adjusted so that only the ground material with the predetermined diameter distributions is conveyed and that the spherical grinding bodies remain in the conical area of the grinding chamber.
Diese Abstimmung wird mit den Merkmalen der Ansprüche 3 und 4 gelöst. Die Zentrifugalkraft der Mahlkammer ist eine Funktion der Drehzahl der Trommel und ist in Abhängigkeit des Drehmomentes der Welle geregelt. Demgegenüber ist die Strömungskraft des Mahlgutes eine Funktion von Volumenstrom und Viskosität des Mahlgutes und ist ebenfalls in Abhängigkeit des Drehmomentes der Welle geregelt.This vote is solved with the features of claims 3 and 4. The centrifugal force of the grinding chamber is a function of the speed of the drum and is regulated depending on the torque of the shaft. In contrast, the flow force of the millbase is a function of the volume flow and viscosity of the millbase and is also regulated as a function of the torque of the shaft.
Vorteilhaft liegt die Trennvorrichtung im Zentrifugalfeld, so dass Grobteilchen, die nicht nach aussen weggeschleudert werden, automatisch im Zentrifugaifeld verbleiben und in den Zerkleinerungsprozess miteinbezogen werden. Dieser Effekt kann mit der Siebanordnung in der DE 39 43 765 C2, die unterhalb der Verfahrenszone vorgesehen ist, nicht erreicht werden.The separating device is advantageously located in the centrifugal field, so that coarse particles that are not thrown outwards automatically remain in the centrifugal field and are included in the comminution process. This effect cannot be achieved with the screen arrangement in DE 39 43 765 C2, which is provided below the process zone.
Zweckmässig ist die Trennvorrichtung drehend an der Mahlkammer, ggf. dem Rotor angeordnet.The separating device is expediently arranged in a rotating manner on the grinding chamber, possibly on the rotor.
Vorteilhaft ist die Rührwerksmühle direkt in einem Auffangbehälter für das Mahlgut angeordnet oder mit einer Leitungsanordnung verbunden.The agitator mill is advantageously arranged directly in a collecting container for the ground material or connected to a line arrangement.
Zweckmässig wird in der Mahlkammer ein Zentrifugalfeld gebildet, dessen Dimensionen derart sind, dass das Verhältnis seiner radialen Länge zur axialen Höhe im Bereich grö- sser als 4:1 liegt.A centrifugal field is expediently formed in the grinding chamber, the dimensions of which are such that the ratio of its radial length to the axial height is in the range greater than 4: 1.
Vorteilhaft ist die Mahlkammer vertikal stehend oder horizontal liegend angeordnet. Weitere vorteilhafte Ausgestaltungen ergeben sich aus den Unteranspruchen und ihren KombinationenThe grinding chamber is advantageously arranged standing vertically or lying horizontally. Further advantageous configurations result from the subclaims and their combinations
Zur Stutzung der Ansprüche werden im folgenden einige Ausfuhrungsbeispiele anhand von Zeichnungen dargestelltTo support the claims, some exemplary embodiments are shown below with the aid of drawings
Es zeigenShow it
Fig 1 eine Schnittzeichnung der Ruhrwerksmuhle Fig 2 ein Beispiel einer Trennvorrichtung Fig 3 schematisch ein Zentrifugalfeld in einer Mahlkammer Fig 4 eine Leitungsanordnung der erfmdungsgemassen Vorrichtung Fig. 5 ein weiteres Beispiel einer Trennvorrichtung1 shows a sectional drawing of the Ruhrwerk mill. FIG. 2 shows an example of a separating device. FIG. 3 schematically shows a centrifugal field in a grinding chamber. FIG. 4 shows a line arrangement of the device according to the invention. FIG. 5 shows another example of a separating device
Fig. 1 stellt eine Schnittansicht einer erfindungsgemässen Rührwerksmühle dar. Die Rührwerksmühle besteht aus einer Mahlkammer 1 mit einem Rotor 2. Die Mahlkammer 1 wird über einen Antrieb 8' und eine Hohlwelle 5' angetrieben. In der Hohlwelle 5' befindet sich eine weitere Hohlwelle 5 für den Rotor 2 der über den Antrieb 8 angetrieben wird. Die Mahlkammer 1 ist mit Mahlkorpern 3 gefüllt. Das Mahlgut 4 gelangt durch die Hohlwelle 5, durch die seitlichen Offnungen 39 der Hohlwelle 5, durch die Hohlräume 26 im Rotor 2 in die Mahlkammer 1 . Das Mahlgut 4 gelangt anschliessend am Umfang des Rotors 2 durch die Mahlkorper 3 in den Innenraum der Mahlkammer 1 . Am oberen Ende der Mahlkammer 1 befinden sich Offnungen 11 , die als Austrittsöffnungen für das behandelnde Mahlgut dienen. An der Aussenseite der Mahlkammer 1 sind über die Öffnungen 11 abschirmende Abdeckungen 30 angebracht, die bis zum Umfang der Mahlkammer 1 reichen, so dass das Mahlgut infolge der Zentrifugalkräfte nach aussen spritzen kann.1 shows a sectional view of an agitator mill according to the invention. The agitator mill consists of a grinding chamber 1 with a rotor 2. The grinding chamber 1 is driven via a drive 8 'and a hollow shaft 5'. In the hollow shaft 5 'there is another hollow shaft 5 for the rotor 2 which is driven by the drive 8. The grinding chamber 1 is filled with grinding bodies 3. The ground material 4 passes through the hollow shaft 5, through the lateral openings 39 of the hollow shaft 5, through the cavities 26 in the rotor 2 into the grinding chamber 1. The ground material 4 then reaches the circumference of the rotor 2 through the grinding bodies 3 into the interior of the grinding chamber 1. At the upper end of the grinding chamber 1 there are openings 11 which serve as outlet openings for the material to be treated. On the outside of the grinding chamber 1 shielding covers 30 are attached via the openings 11, which extend to the circumference of the grinding chamber 1, so that the ground material can spray outwards as a result of the centrifugal forces.
Unterhalb der Auslassöffπungen 1 1 sind Trennvorrichtungen (Siebe) 1 10 an der inneren Wand der Mahlkammer 1 angeordnet. Diese Trennvorrichtungen 110 liegen in einem Zentrifugalfeld 70, das in der Mahlkammer 1 zwischen der inneren Wand der Mahlkammer und der äusseren Wand des Rotors 2 gebildet wird. Die Öffnungen der Siebe (nicht gezeigt) sind so abgestimmt, dass nur das Mahlgut 4 mit den vorherbestimmten Durchmesserverteilungen gefordert wird, wobei die kugeligen Mahlkorper 3 und die Grobteilchen in der Mahlkorperschicht in der Mahikammer verbleiben Damit werden die Grobteilchen in den Zerkleinerungsprozess automatisch miteinbezogenSeparating devices (sieves) 110 are arranged on the inner wall of the grinding chamber 1 below the outlet openings 11. These separation devices 110 lie in a centrifugal field 70, which is formed in the grinding chamber 1 between the inner wall of the grinding chamber and the outer wall of the rotor 2. The openings of the sieves (not shown) are matched so that only the regrind 4 with the predetermined ones Diameter distributions is required, with the spherical grinding media 3 and the coarse particles remaining in the grinding media layer in the grinding chamber. The coarse particles are thus automatically included in the comminution process
Die ganze Ruhrwerksmuhle ist direkt in einem Auffangbehalter 14 angeordnet Dieser kann mit einer Kühlung (nicht gezeigt) versehen sein Mittels einer Pumpe wird das Mahlgut 4 über eine Leitung aus dem Auffangbehalter 14 in einen Kreislauf durch den Prozess gefuhrtThe entire Ruhrwerk mill is arranged directly in a collecting container 14. This can be provided with cooling (not shown). The regrind 4 is fed into the circuit via a line from the collecting container 14 through the process
Fig 2 zeigt eine weitere Ausfuhrungsform der vorliegenden Erfindung Das Mahlgut 4 gelangt via Mahlkammer 1 durch die Einlassoffnungen 122 in die Mahlkammer und verlasst diese durch die seitlichen Offnungen 39 an der Hohlwelle 5 Die Trennvorrichtungen 1 10 sind drehend an dem Rotor 2 und innerhalb der Mahlkammer angeordnetFIG. 2 shows a further embodiment of the present invention. The ground material 4 arrives in the grinding chamber 1 via the inlet openings 122 and leaves the grinding chamber through the lateral openings 39 on the hollow shaft 5. The separating devices 110 are rotatably arranged on the rotor 2 and inside the grinding chamber
Fig 3 zeigt schematisch das Zentrifugalfeld 70, das zwischen der Mahlkammer 1 und dem Rotor 2 gebildet wird Die Zentrifugalkraft der Mahlkammer Z ggf die Verpressung der Mahlkorper Kv und die Strömung des Mahlgutes Kst sind so miteinander abgestimmt, dass sie im Gleichgewicht stehen3 schematically shows the centrifugal field 70 which is formed between the grinding chamber 1 and the rotor 2. The centrifugal force of the grinding chamber Z, if applicable, the compression of the grinding media Kv and the flow of the grinding stock K st are coordinated with one another in such a way that they are in equilibrium
Fig 4 zeigt eine weitere Ausfuhrungsform der Ruhrwerksmuhle, die mit einer Leitungsanordnung 121 verbunden ist Die Auslassoffnungen 1 1 an der Mahlkammerwand und die Trennvorrichtungen 1 10 sind oberhalb und unterhalb des Rotors 2 vorgesehen Darüber hinaus ist eine Kreisfahrweise möglich, was mit den gerichteten Pfeilen in Fig 4 angedeutet wird In der Verfahrenszone können Ruhrwerkzeuge 6 an der Mahlkam- mer 1 und am Rotor 2 vorhanden seinFIG. 4 shows a further embodiment of the Ruhrwerk mill, which is connected to a line arrangement 121. The outlet openings 11 on the grinding chamber wall and the separating devices 110 are provided above and below the rotor 2. In addition, a circular mode of operation is possible, which is indicated by the directional arrows in FIG 4 is indicated In the process zone, Ruhr tools 6 may be present on the grinding chamber 1 and on the rotor 2
Fig 5 zeigt eine Ruhrwerksmuhle mit kombinierter Trennvorrichtung Das Voneinander- trennen von den Mahlkorper 3 und dem Mahlgut 4 in der Mahlkammer 1 erfolgt entweder durch einen Reibspalt 1 1 1 , 112 oder eine Kombination aus dem Reibspalt und dre- hendem Sieb (1 1 1 , 1 12, 1 10)5 shows a Ruhrwerk mill with a combined separating device. The grinding media 3 and the grinding stock 4 are separated from one another in the grinding chamber 1 either by means of a friction gap 1 1 1, 112 or a combination of the friction gap and rotating sieve (1 1 1, 1 12, 1 10)
Die Reibspaltweite ist so abgestimmt, dass nur das Mahlgut 4 mit den vorherbestimmten Durchmesserverteilungen gefordert wird, wobei die kugeligen Mahlkorper 3 und die Grobteilchen in der Mahlkorperschicht in der Mahlkammer verbleiben Das behandelnde Mahlgut wird infolge der Zentrifugalkraft über die Öffnung 1 14 am unteren Ende der Mahlkammer 1 nach aussen gespritzt.The width of the friction gap is adjusted so that only the ground material 4 with the predetermined diameter distributions is required, the spherical grinding bodies 3 and the coarse particles remaining in the grinding body layer in the grinding chamber As a result of the centrifugal force, the ground material to be treated is sprayed outwards through the opening 114 at the lower end of the grinding chamber 1.
Die Reibspaltweite kann variabel zu Null und Mahlkörperdurchmesser gewählt werden, wobei der Reibspalt axial oder radial innerhalb verlaufen kann. The width of the friction gap can be chosen to be zero and the diameter of the grinding media, the friction gap being able to run axially or radially inside.
Bezugszeichenreference numeral
1 Mahlkammer1 grinding chamber
2 Rotor2 rotor
3 Mahlkörper / Mahlkörperschüttung3 grinding media / grinding media
4 Mahlgut4 regrind
5, 5' Hohlwellen5, 5 'hollow shafts
6 Rührwerkzeuge6 stirring tools
8. 8' Antriebe8. 8 'drives
1 1 , 114 Auslassöffnungen in der Mahlkammer1 1, 114 outlet openings in the grinding chamber
14 Auffangbehalter14 collecting container
26 Hohlräume im Rotor26 cavities in the rotor
30 Abdeckungen30 covers
39 seitliche Öffnungen an der Hohlwelle39 side openings on the hollow shaft
43, 43' Bremseinrichtungen43, 43 'braking devices
70 Zentrifugalfeld (Verfahrenszone)70 centrifugal field (process zone)
110 Trennvorrichtung (Siebe)110 separating device (sieves)
1 1 1 , 1 12 Reibspalt1 1 1, 1 12 friction gap
121 Leitungsanordnung121 line arrangement
122 Einlassöffnungen in der Mahlkammer122 inlet openings in the grinding chamber
Z ZentrifugalkraftZ centrifugal force
Kv Verpressung der MahlkörperKv pressing of the grinding media
KST Strömung des Mahlgutes KST flow of the regrind

Claims

Patentansprüche claims
1 . Verfahren zum Nassmahlen und Dispergieren von Feststoffpartikeln in Flüssigkeiten mittels einer Rührwerksmühle bestehend aus mindestens einer Mahlkörper (3) enthaltenden Mahlkammer (1 ), mindestens einem Rotor (2), wobei die Mahlkammer (1 ) und der Rotor (2) mittels mindestens eines Antriebs (8,8') unabhängig von- einander in Rotation versetzbar sind und das Mahlgut (4) über eine Hohlwelle (5) oder via Mahlkammer (1 ) von aussen in die Mahikammer (1 ) eingeleitet wird, wobei die in der Mahlkammer (1 ) befindlichen Mahlkörper (3) durch die Rotation der Mahlkammer (1 ) komprimiert werden, dass der Rotor (2) in Rotation versetzt wird, wobei die Drehrichtungen der Mahlkammer (1 ) und des Rotors (2) gleichsinnig oder gegensinnig verlau- fen, und dass der Rotor (2) konstant schneller, konstant langsamer, alternierend langsamer oder schneller dreht oder gleich schnell dreht als die Mahlkammer (1 ), wobei das Mahlgut (4) einmalig von innen nach aussen in die Mahlkörperschüttung (3) eingeleitet wird, dann entgegengesetzt von aussen nach innen die verbleibende Mahlkorperschicht durchströmt und darauf über Auslassöffnungen (1 1 ) gefördert wird, dadurch gekenn- zeichnet, dass die Zentrifugalkraft der Mahlkammer ZM, ggf. die Verpressung der Mahlkörper Kv und die Strömung des Mahlgutes Kst so miteinander abgestimmt sind, dass sie im Gleichgewicht stehen, und dass die Mahlkörper (3) vor dem Austritt über die Auslassöffnungen (1 1 ) von dem Mahlgut (4) in mindestens einer Trennvorrichtung (1 10) getrennt werden.1 . Method for wet grinding and dispersing solid particles in liquids by means of an agitator mill consisting of at least one grinding chamber (1) containing grinding media (3), at least one rotor (2), the grinding chamber (1) and the rotor (2) using at least one drive ( 8,8 ') can be set in rotation independently of one another and the material to be ground (4) is introduced into the grinding chamber (1) from the outside via a hollow shaft (5) or via a grinding chamber (1), the material in the grinding chamber (1) located grinding bodies (3) are compressed by the rotation of the grinding chamber (1), that the rotor (2) is set in rotation, the directions of rotation of the grinding chamber (1) and the rotor (2) being in the same or opposite direction, and that the rotor (2) rotates constantly faster, constantly slower, alternately slower or faster or rotates at the same speed as the grinding chamber (1), the material to be ground (4) once from the inside to the outside of the grinding media (3) is then passed in opposite directions from the outside inwards through the remaining grinding media layer and then conveyed through outlet openings (11), characterized in that the centrifugal force of the grinding chamber Z M , possibly the compression of the grinding media K v and the flow of the grinding stock Kst are coordinated with one another in such a way that they are in equilibrium and that the grinding media (3) are separated from the grinding stock (4) in at least one separating device (1 10) via the outlet openings (11) before they exit.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass im Zentrifugalfeld (70) ein Wirbelbett aus komprimierten Mahlkorpern (3) und dem diese durchströmenden Mahlgut (4) gebildet wird.2. The method according to claim 1, characterized in that in the centrifugal field (70) a fluidized bed of compressed grinding media (3) and the material flowing through them (4) is formed.
3. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Zentrifugalkraft der Mahlkammer ZM, ggf. die Verpressung der Mahlkorper Kv eine Funktion der Drehzahlen ist / Kv = f (Drehzahl Trommel) / und in Abhängigkeit des Drehmomentes der Welle (5,5') geregelt ist. 3. The method according to claim 1, characterized in that the centrifugal force of the grinding chamber Z M , optionally the compression of the grinding media Kv is a function of the speeds / K v = f (drum speed) / and depending on the torque of the shaft (5, 5 ') is regulated.
4. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Strömungskraft KST des Mahlgutes (4) eine Funktion von Volumeπstrom und Viskosität des Mahlgutes ist / KST = F (Volumenstrom + Viskosität) / und in Abhängigkeit des Drehmomentes der Welle (5) geregelt ist.4. The method according to claim 1, characterized in that the flow force K S T of the material to be ground (4) is a function of Volumeπstrom and viscosity of the material to be ground / K S T = F (volume flow + viscosity) / and depending on the torque of the shaft ( 5) is regulated.
5. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass das Vonein- andertrennen von den Mahlkörpern (3) und dem Mahlgut (4) durch mindestens ein Sieb (1 10), das im Zentrifugalfeld liegt, erfolgt.5. The method according to claim 1, characterized in that the separation of the grinding media (3) and the grinding stock (4) through at least one sieve (1 10), which is in the centrifugal field, takes place.
6. Verfahren nach Anspruch 1 oder 5, dadurch gekennzeichnet, dass die6. The method according to claim 1 or 5, characterized in that the
Siebe (1 10) drehend an der Mahlkammer (1 ), ggf. dem Rotor (2) angeordnet sind.Sieves (1 10) are arranged rotating on the grinding chamber (1), possibly the rotor (2).
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass die Siebe (1 10) durch das Zentrifugalfeld (70) entlastet sind.7. The method according to claim 6, characterized in that the sieves (1 10) are relieved by the centrifugal field (70).
8. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass das Vonein- andertrennen von den Mahlkörpern (3) und dem Mahlgut (4) durch einen Reibspalt (111 , 112) resp. einer Kombination aus Reibspalt und drehendem Sieb (110) innerhalb der Mahlkammer (1 ) erfolgt.8. The method according to claim 1, characterized in that the separation of the grinding media (3) and the grinding stock (4) by a friction gap (111, 112) respectively. a combination of friction gap and rotating sieve (110) within the grinding chamber (1).
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass die Reibspaltweite variabel zwischen Null und Mahlkörperdurchmesser gewählt wird.9. The method according to claim 8, characterized in that the friction gap width is chosen variably between zero and grinding media diameter.
10. Verfahren nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass der Reibspalt bezüglich der Rührwerksdrehachse axial oder auch radial veriaufen kann.10. The method according to claim 8 or 9, characterized in that the friction gap can run axially or radially with respect to the agitator axis of rotation.
11. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Drehgeschwindigkeit der Mahlkammer (1 ) und/oder des Rotors (2) periodisch zunächst stetig zunimmt und nach einer gewissen Zeitdauer plötzlich mittels separater Bremseinrich- tungen (43, 43') abgebremst wird, wobei dabei die Mahlkammer (1 ) bei drehendem Rotor (2) oder der Rotor (2) bei drehender Mahlkammer (1 ) in Ruhe sein Können. 11. The method according to claim 1, characterized in that the rotational speed of the grinding chamber (1) and / or the rotor (2) periodically initially increases steadily and is suddenly braked after a certain period of time by means of separate braking devices (43, 43 '), whereby the grinding chamber (1) can be at rest when the rotor (2) is rotating or the rotor (2) when the grinding chamber (1) is rotating.
12. Verfahren nach den Ansprüchen 1 oder 1 1 , dadurch gekennzeichnet, dass der Rotor (2) gegenüber der Mahlkammer (1 ) exzentrische Bewegungen durchführt.12. The method according to claims 1 or 1 1, characterized in that the rotor (2) relative to the grinding chamber (1) performs eccentric movements.
13. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass der Rotor (1 ) schwingend gelagert ist.13. The method according to claim 1, characterized in that the rotor (1) is oscillating.
14. Verfahren nach mindestens einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Mahlkammer (1 ) vertikal angeordnet ist und im unteren Teil zur Aufnahme der Mahlkörper konisch verläuft.14. The method according to at least one of the preceding claims, characterized in that the grinding chamber (1) is arranged vertically and is conical in the lower part for receiving the grinding bodies.
15. Verfahren nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das Mahlgut (4) über die geschlossene Hohlwelle (5) in radialer Richtung durch den Rotor (2) in die Mahlkammer (1 ) nach unten geleitet wird.15. The method according to any one of the preceding claims, characterized in that the regrind (4) via the closed hollow shaft (5) in the radial direction through the rotor (2) in the grinding chamber (1) is guided downwards.
16. Verfahren nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das Mahlgut (4) via Mahlkammer (1 ) durch die Einlassöffnungen (122) von aussen eingeleitet wird.16. The method according to any one of the preceding claims, characterized in that the ground material (4) is introduced from outside via the grinding chamber (1) through the inlet openings (122).
17. Verfahren nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das Verfahren kaskadenartig betrieben wird, in der Weise, dass mehrere Mahlkammern (1 , 1 ', 1 ") mit mehreren Rotoren (2,2',2") übereinander bzw. nebeneinander angeordnet sind.17. The method according to any one of the preceding claims, characterized in that the method is operated in a cascade manner in such a way that a plurality of grinding chambers (1, 1 ', 1 ") with a plurality of rotors (2,2', 2") one above the other or are arranged side by side.
18. Verfahren nach mindestens einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Produktstrom für ein bestimmtes Zeitintervall in die Mahlkammer (1 ) zugeführt wird, und dass anschliessend die Produktzufuhr für ein bestimmtes Zeitintervall gestoppt wird.18. The method according to at least one of the preceding claims, characterized in that the product stream is fed into the grinding chamber (1) for a specific time interval, and that the product supply is then stopped for a specific time interval.
19. Verfahren nach Anspruch 15, dadurch gekennzeichnet, dass während eines Zeitintervalls die Drehzahlen von Rotor (2) und die Mahlkammer (1 ) gleich oder nahezu gleich sind und während eines anderen Zeitintervalls die Drehzahlen von Rotor (2) und Mahlkammer (1 ) unterschiedlich sind. 19. The method according to claim 15, characterized in that the speeds of the rotor (2) and the grinding chamber (1) are the same or almost the same during a time interval and the speeds of the rotor (2) and grinding chamber (1) differ during another time interval are.
20. Vorrichtung zur Durchführung des Verfahrens nach mindestens einem der vorherigen Ansprüche zum Nassmahlen und Dispergieren von Feststoffpartikeln in Flüssigkeiten bestehend aus einer Rührwerksmühle mit Mahlkörper (3) enthaltenden Mahlkammer (1 ), einem Rotor (2), wobei die Mahlkammer (1 ) und der Rotor (2) mittels mindestens eines Antriebs (8) unabhängig voneinander in Rotation versetzbar sind und das Mahlgut (4) über eine Hohlwelle (5) in die Mahlkammer (1 ) oder durch die Einlassöffnungen (122) in der Mahlkammer (1 ) einleitbar ist, wobei der Rotor (2) scheibenförmig ausgebildet ist und Hohlräume (26) zur Austragung des Mahlgutes (4) aufweist und an der Hohlwelle (5) angeordnet ist, wobei die nach unten geschlossene Hohlwelle seitliche Öffnungen (39) aufweist, die in die Hohlräume (26) führen und wobei die Mahlkammer (1 ) Auslassöffnungen (1 1 ) aufweist, dadurch gekennzeichnet, dass in der Mahlkammer (1 ) nahe der Auslassöffnungen (1 1 ) mindestens eine Trennvorrichtung (1 10) vorgesehen ist.20. Apparatus for performing the method according to at least one of the preceding claims for wet grinding and dispersing solid particles in liquids consisting of an agitator mill with grinding media (3) containing grinding chamber (1), a rotor (2), the grinding chamber (1) and the The rotor (2) can be set in rotation independently of one another by means of at least one drive (8) and the ground material (4) can be introduced into the grinding chamber (1) via a hollow shaft (5) or through the inlet openings (122) in the grinding chamber (1) , wherein the rotor (2) is disc-shaped and has cavities (26) for discharging the ground material (4) and is arranged on the hollow shaft (5), the downwardly closed hollow shaft having lateral openings (39) which lead into the cavities (26) lead and wherein the grinding chamber (1) has outlet openings (1 1), characterized in that in the grinding chamber (1) near the outlet openings (1 1) at least one separating device seal (1 10) is provided.
21. Vorrichtung zur Durchführung des Verfahrens nach mindestens einem der vorherigen Ansprüche zum Nassmahlen und Dispergieren von Feststoffpartikeln in Flüssigkeiten bestehend aus einer Rührwerksmühle mit Mahlkörper (3) enthaltenden Mahlkammer (1 ), einem Rotor (2), wobei die Mahlkammer (1 ) und der Rotor (2) mittels eines Antriebs (8) unabhängig voneinander in Rotation versetzbar sind und das Mahlgut (4) über eine Hohlwelle (5) in die Mahlkammer (1 ) oder durch die Einlassöffnungen (122) in der Mahlkammer (1 ) einleitbar ist, wobei der Rotor (2) scheibenförmig ausgebildet ist und Hohlräume (26) zur Austragung des Mahlgutes (4) aufweist und an der Hohlwelle (5) angeordnet ist, wobei die nach unten geschlossene Hohlwelle seitliche Öffnungen (39) aufweist, die in die Hohlräume (26) führen und wobei die Mahlkammer (1 ) Auslassöffnungen (1 14) aufweist, dadurch gekennzeichnet, dass in der Mahlkammer (1 ) eine Trennvorrichtung vorgesehen ist, die aus einem Reibspalt (1 1 1 , 1 12) oder einer Kombination aus Reibspalt und drehendem Sieb (1 10) besteht, wobei der Reibspalt bezüglich der Rührwerksdrehachse axial oder radial verlaufen kann, und die Reibspaltweite zwischen Null und Mahlkörperdurchmesser gewählt wird.21. An apparatus for performing the method according to at least one of the preceding claims for wet grinding and dispersing solid particles in liquids consisting of an agitator mill with grinding media (3) containing grinding chamber (1), a rotor (2), the grinding chamber (1) and the The rotor (2) can be set in rotation independently of one another by means of a drive (8) and the ground material (4) can be introduced into the grinding chamber (1) via a hollow shaft (5) or through the inlet openings (122) in the grinding chamber (1), the rotor (2) being disc-shaped and having cavities (26) for discharging the ground material (4) and being arranged on the hollow shaft (5), the downwardly closed hollow shaft having lateral openings (39) which lead into the cavities ( 26) and the grinding chamber (1) has outlet openings (1 14), characterized in that a separating device is provided in the grinding chamber (1) which consists of a friction gap (1 1 1, 1 12) or a combination of friction gap and rotating sieve (1 10), the friction gap with respect to the axis of rotation of the agitator can run axially or radially, and the friction gap width is chosen between zero and grinding media diameter.
22. Vorrichtung nach Anspruch 20 oder 21 , dadurch gekennzeichnet, dass die Rührwerksmühle in einem Auffangbehalter (14) für das Mahlgut (4) angeordnet ist oder direkt mit einer Leitungsanordnung (121 ) verbunden ist. 22. The apparatus of claim 20 or 21, characterized in that the agitator mill is arranged in a collecting container (14) for the regrind (4) or is directly connected to a line arrangement (121).
23. Vorrichtung nach Anspruch 20 oder 21 , dadurch gekennzeichnet, dass zwischen der Mahlkammer (1 ) und dem Rotor (2) ein Zentrifugalfeld (70) gebildet wird, dessen Dimensionen derart sind, dass das Verhältnis seiner radialen Länge L zur axialen Höhe H im Bereich grösser als 4:1 liegt.23. The device according to claim 20 or 21, characterized in that a centrifugal field (70) is formed between the grinding chamber (1) and the rotor (2), the dimensions of which are such that the ratio of its radial length L to the axial height H im Range is greater than 4: 1.
24. Vorrichtung nach Anspruch 20 oder 21 , dadurch gekennzeichnet, dass der Rotor (2) gegenüber der Mahlkammer (1 ) exzentrisch gelagert ist.24. The device according to claim 20 or 21, characterized in that the rotor (2) relative to the grinding chamber (1) is mounted eccentrically.
25. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch ge- kennzeichnet, dass die Vorrichtung mehrere übereinander oder nebeneinander an der25. Device according to one of the preceding claims, character- ized in that the device several on top of or next to each other on the
Hohlwelle (5) kaskadenförmig angeordnete Mahlkammern mit Rotoren aufweist.Has hollow shaft (5) cascade-shaped grinding chambers with rotors.
26. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mahlkammer (1 ) zylindrisch, konisch oder doppelkonisch aus- gebildet ist.26. Device according to one of the preceding claims, characterized in that the grinding chamber (1) is cylindrical, conical or double-conical.
27. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mahlkammer (1 ) und/oder der Rotor (2) eine Kühlung aufweisen.27. Device according to one of the preceding claims, characterized in that the grinding chamber (1) and / or the rotor (2) have cooling.
28. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mahlkammer (1 ) vertikal stehend oder horizontal liegend angeordnet ist. 28. Device according to one of the preceding claims, characterized in that the grinding chamber (1) is arranged vertically or horizontally.
EP99938111.4A 1998-08-06 1999-07-19 Method and device for wet-grinding and dispersing solids in fluids Expired - Lifetime EP1027161B1 (en)

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DE1998135555 DE19835555B4 (en) 1998-08-06 1998-08-06 Method and device for wet grinding and dispersing of solid particles in liquids
DE19835555 1998-08-06
PCT/CH1999/000333 WO2000007731A1 (en) 1998-08-06 1999-07-19 Method and device for wet-grinding and dispersing solids in fluids

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EP1027161B1 (en) 2013-06-26
DE19835555B4 (en) 2007-10-04
AU5275699A (en) 2000-02-28
DE19835555A1 (en) 2000-02-10
WO2000007731A1 (en) 2000-02-17

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