EP1973665B1 - Method for comminuting material and roller mill - Google Patents

Method for comminuting material and roller mill Download PDF

Info

Publication number
EP1973665B1
EP1973665B1 EP08708657A EP08708657A EP1973665B1 EP 1973665 B1 EP1973665 B1 EP 1973665B1 EP 08708657 A EP08708657 A EP 08708657A EP 08708657 A EP08708657 A EP 08708657A EP 1973665 B1 EP1973665 B1 EP 1973665B1
Authority
EP
European Patent Office
Prior art keywords
mill
drives
speed
roller
compensation control
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.)
Expired - Fee Related
Application number
EP08708657A
Other languages
German (de)
French (fr)
Other versions
EP1973665A1 (en
Inventor
Markus Berger
Ludwig KÖNNING
Marco VÖLLINK
Franz-Josef Zurhove
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Polysius AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Polysius AG filed Critical Polysius AG
Publication of EP1973665A1 publication Critical patent/EP1973665A1/en
Application granted granted Critical
Publication of EP1973665B1 publication Critical patent/EP1973665B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C25/00—Control arrangements specially adapted for crushing or disintegrating

Definitions

  • the invention relates to a roller mill and to a method for comminuting grinding stock with a roller mill, which has a grinding table, at least one grinding roller and at least two drives for driving the roller mill, wherein a compensation control for the drives is performed.
  • the grinding table is usually driven in roller mills, which drives the grinding rollers on the grinding bed.
  • roller mills which drives the grinding rollers on the grinding bed.
  • the invention is therefore based on the object to improve the compensation control for the drives.
  • a roller mill which has a grinding table, at least one grinding roller and at least two drives for driving the roller mill.
  • a power compensation control is performed, wherein the power of the drives are controlled in a predetermined ratio to each other by controlling the speed of at least one drive.
  • At least two grinding rollers are driven via a respective drive.
  • the grinding table is driven only via the at least two grinding rollers and the material to be ground. But it is also conceivable that the grinding plate is assigned its own drive.
  • the control of the speed of the drives via frequency converter, which preferably operate with field-oriented control.
  • the power compensation control additionally comprises a regulation of the rotational speed of the grinding table, wherein preferably a predetermined speed of the grinding table is maintained.
  • the drawing shows a schematic representation of a roller mill with a power compensation control.
  • a roller mill 1 which has a grinding table 10, at least two grinding rollers 11, 12 and at least two drives 13, 14 for driving the two grinding rollers 11, 12.
  • Each drive comprises a motor 13a, 14a and a transmission 13b, 14b.
  • a plurality of grinding rollers in particular three, four or more grinding rollers can be provided.
  • the grinding table 10 is freely rotatable about an axis of rotation 10a, so that it is set in rotation only via the driven grinding rollers 11, 12 and the grinding material 3 located between the grinding roller and the grinding table. It would also be conceivable that the grinding table is assigned its own drive.
  • a power compensation control 2 wherein the power of the drives 13, 14 are regulated in a predetermined ratio to each other by controlling the speed of at least one drive.
  • identical drives 13, 14 are provided for the two identically designed grinding rollers 11, 12, so that the power balance control keeps the power of the two drives at the same level.
  • the grinding table could be driven at a lower or higher power than the grinding rollers.
  • the power balancing control 2 in the illustrated embodiment consists essentially of one of the drives 13, 14 associated frequency converter 20, 21, a power compensation regulator 22, a Mahltellerfacesensor 23 and a Mahltellertextiereregler 24th
  • the frequency converter 20, 21 are provided in a conventional manner with a field-oriented control. You get from the drives 13, 14 the current motor current or the motor voltage. From this, the power consumption of each drive is determined and a moving sum mean value is formed, which is weighted by a factor (with the same power of the drives equal to 0.5) and represents the target value of the drive. At almost constant Resistance torque depends this value essentially only on the speed of the respective drive.
  • a deviation between the drive actual and nominal drive power is applied to the power compensation regulator 22, which effects a power adjustment of the two drives 13, 14 by adjusting the rotational speed of one or both drives such that the power of the two drives in the predetermined ratio, in the present case at the same level.
  • the grinding table 10 rotates at a predetermined setpoint speed n soll .
  • the grinding table speed controller 24 communicates with the grinding table speed sensor 23 and continuously receives the actual value of the speed of the grinding table, which is compared with the setpoint n soll , from which the control deviation results. From this, the controller generates the set speed of the drives 13, 14 at a fixed assumed ratio.
  • the frequency converters 20, 21 have an internal speed controller and a revolving motor model, whereby the drive speed of the drives and the engine torque can be tapped.
  • the frequency converter must be able to read in and output control and status data at the latest every 5 ms, so that the function of the power compensation regulator is ensured.
  • the system is a cascade control, the individual levels are dynamically decoupled from each other and thus can be considered individually.
  • the advantage of the regulation described above is that with a power balancing control the power consumption of the Drives 13, 14 differ only slightly and even major changes in the system (translation jump) are very fast.
  • a further advantage is that it is possible to dispense almost completely with expensive and maintenance-intensive measuring technology, since the frequency converters used provide all relevant data except for the grinding table speed.
  • the control interventions can be performed almost without power, so that the overall efficiency is at the level of a regulated drive.

Landscapes

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

Description

Die Erfindung betrifft eine Rollenmühle sowie ein Verfahren zur Zerkleinerung von Mahlgut mit einer Rollenmühle, die einen Mahlteller, wenigstens eine Mahlrolle sowie wenigstens zwei Antriebe zum Antreiben der Rollenmühle aufweist, wobei eine Ausgleichsregelung für die Antriebe durchgeführt wird.The invention relates to a roller mill and to a method for comminuting grinding stock with a roller mill, which has a grinding table, at least one grinding roller and at least two drives for driving the roller mill, wherein a compensation control for the drives is performed.

In der Praxis wird bei Rollenmühlen üblicherweise der Mahlteller angetrieben, welcher über das Mahlbett die Mahlrollen antreibt. Dies führt jedoch zur starken Leistungsschwankungen und somit zu hohen Belastungen des Antriebsstranges, sodass man in der sicher zu übertragenden Antriebsleistung sehr begrenzt ist.In practice, the grinding table is usually driven in roller mills, which drives the grinding rollers on the grinding bed. However, this leads to strong power fluctuations and thus to high loads on the drive train, so that one is very limited in the safely transmitted drive power.

Man hat daher in der DE 197 02 854 A1 bereits vorgeschlagen, die Rollen anzutreiben. Dort wurde auch darauf hingewiesen, dass die einzelnen Mahlrollen einerseits über den Mahlteller und das darauf befindliche Mahlgut bzw. Mahlgutbett drehantriebsmäßig miteinander gekoppelt sind und andererseits aber stark unterschiedliche Leistungsaufnahmen haben können, die beispielsweise auf unterschiedliche Abrolldurchmesser auf dem Mahlteller (Friktionspunkt/Durchmesser), unterschiedliche Wirkdurchmesser der einzelnen Mahlrollen (z.B. durch Verschleiß) und auf ein unterschiedliches Einzugsverhalten des Mahlgutes im Zusammenwirken auf Mahlteller und Mahlrolle zurückzuführen sind.One has therefore in the DE 197 02 854 A1 already proposed to propel the roles. There, it was also pointed out that the individual grinding rollers are rotationally coupled to one another via the grinding plate and the ground material or meal material thereon and, on the other hand, may have very different power consumptions, for example at different rolling diameters on the grinding plate (friction point / diameter) Effective diameter of the individual grinding rollers (eg due to wear) and due to a different feed behavior of the ground material in cooperation on grinding plate and grinding roller are due.

Bereits geringe Drehzahländerungen zwischen einzelnen Mahlrollen bewirken bei den einzelnen Antrieben relativ hohe Leistungsschwankungen. Dies kann dazu führen, dass die Mahlrollen dauernd beschleunigt oder verzögert werden, d.h. die einzeln angetriebenen Mahlrollen arbeiten gegeneinander, was während des Zerkleinerungsbetriebes zu einem deutlich erhöhten Kraft- bzw. Energiebedarf führt.Even small speed changes between individual grinding rollers cause relatively high power fluctuations in the individual drives. This can cause the grinding rolls to be constantly accelerated or decelerated, i. the individually driven grinding rollers work against each other, which during the crushing operation leads to a significantly increased power and energy requirements.

In der DE-A1-197 02 854 wird daher vorgeschlagen, dass die Betriebsschwankungen zwischen den einzelnen Drehantrieben aller angetriebenen Mahlrollen durch eine gemeinsame Lastausgleichsregelung ausgeglichen werden. Dennoch sind bei dynamischen Übersetzungsänderungen zwischen Mahlteller und Mahlrolle die Leistungsaufnahmen der Antriebe sehr unterschiedlich.In the DE-A1-197 02 854 Therefore, it is proposed that the operating fluctuations between the individual rotary drives of all driven grinding rollers by a common burden-sharing arrangements. Nevertheless, with dynamic translation changes between grinding table and grinding roller, the power consumption of the drives are very different.

Die Erfindung liegt daher die Aufgabe zugrunde, die Ausgleichsregelung für die Antriebe zu verbessern.The invention is therefore based on the object to improve the compensation control for the drives.

Erfindungsgemäß wird diese Aufgabe durch die Merkmale der Ansprüche 1 und 10 gelöst.According to the invention, this object is solved by the features of claims 1 and 10.

Beim erfindungsgemäßen Verfahren zur Zerkleinerung von Mahlgut wir eine Rollenmühle verwendet, die einen Mahlteller, wenigstens eine Mahlrolle sowie wenigstens zwei Antriebe zum Antreiben der Rollenmühle aufweist. Außerdem wird eine Leistungsausgleichsregelung durchgeführt, wobei durch Regelung der Drehzahl wenigstens eines Antriebs die Leistung der Antriebe in einem vorgegebenen Verhältnis zueinander geregelt werden.In the method according to the invention for comminuting grinding stock, we use a roller mill which has a grinding table, at least one grinding roller and at least two drives for driving the roller mill. In addition, a power compensation control is performed, wherein the power of the drives are controlled in a predetermined ratio to each other by controlling the speed of at least one drive.

Auf diese Weise können dynamische Übersetzungsänderungen zwischen Mahlteller und Mahlrolle zuverlässig ausgeglichen werden, wobei ganz bewusst unterschiedliche Drehzahlen für die Antriebe zugelassen werden.In this way, dynamic translation changes between grinding plate and grinding roller can be compensated reliably, with deliberately different speeds are allowed for the drives.

Gemäß einem bevorzugten Ausführungsbeispiel werden wenigstens zwei Mahlrollen über jeweils einen zugeordneten Antrieb angetrieben. Der Mahlteller wird dabei lediglich über die wenigstens zwei Mahlrollen und das Mahlgut angetrieben. Es ist aber auch denkbar, dass dem Mahlteller ein eigener Antrieb zugeordnet ist.According to a preferred embodiment, at least two grinding rollers are driven via a respective drive. The grinding table is driven only via the at least two grinding rollers and the material to be ground. But it is also conceivable that the grinding plate is assigned its own drive.

Die Regelung der Drehzahl der Antriebe erfolgt über Frequenzumrichter, die vorzugsweise mit feldorientierter Regelung arbeiten.The control of the speed of the drives via frequency converter, which preferably operate with field-oriented control.

Gemäß einem bevorzugten Ausführungsbeispiel umfasst die Leistungsausgleichsregelung zusätzlich eine Regelung der Drehzahl des Mahltellers, wobei vorzugsweise eine vorgegebene Drehzahl des Mahltellers aufrechterhalten wird.According to a preferred embodiment, the power compensation control additionally comprises a regulation of the rotational speed of the grinding table, wherein preferably a predetermined speed of the grinding table is maintained.

Weitere Vorteile und Ausgestaltungen der Erfindung werden im Folgenden anhand der Beschreibung und der Zeichnung näher erläutert.Further advantages and embodiments of the invention will be explained in more detail below with reference to the description and the drawing.

Die Zeichnung zeigt eine schematische Darstellung einer Rollenmühle mit einer Leistungsausgleichsregelung.The drawing shows a schematic representation of a roller mill with a power compensation control.

In der Zeichnung ist eine Rollenmühle 1 schematisch dargestellt, die einen Mahlteller 10, wenigstens zwei Mahlrollen 11, 12 sowie wenigstens zwei Antriebe 13, 14 zum Antreiben der beiden Mahlrollen 11, 12 aufweist. Jeder Antrieb umfasst einen Motor 13a, 14a sowie ein Getriebe 13b, 14b. Im Rahmen der Erfindung können selbstverständlich auch mehrere Mahlrollen, insbesondere drei, vier oder mehr Mahlrollen vorgesehen werden.In the drawing, a roller mill 1 is shown schematically, which has a grinding table 10, at least two grinding rollers 11, 12 and at least two drives 13, 14 for driving the two grinding rollers 11, 12. Each drive comprises a motor 13a, 14a and a transmission 13b, 14b. In the context of the invention, of course, a plurality of grinding rollers, in particular three, four or more grinding rollers can be provided.

Der Mahlteller 10 ist um eine Drehachse 10a frei drehbar, sodass er lediglich über die angetriebenen Mahlrollen 11, 12 und das zwischen Mahlrolle und Mahlteller befindliche Mahlgut 3 in Rotation versetzt wird. Es wäre aber auch denkbar, dass dem Mahlteller ein eigener Antrieb zugeordnet wird.The grinding table 10 is freely rotatable about an axis of rotation 10a, so that it is set in rotation only via the driven grinding rollers 11, 12 and the grinding material 3 located between the grinding roller and the grinding table. It would also be conceivable that the grinding table is assigned its own drive.

Die Übertragung der Drehbewegung der Mahlrollen 11, 12 auf den Mahlteller 10 erfolgt über das Mahlgut 3. Durch das in der Praxis relativ ungleichmäßig ausgebildete Mahlgutbett ändert sich das Übersetzungsverhältnis von Mahlrolle zu Mahlteller laufend. Das Übersetzungsverhältnis wird letztendlich durch den Abstand des Kraftangriffspunktes zwischen Mahlrollenachse und Mahltellerachse bestimmt. In der Zeichnung ist der Abstand r1 des Kraftangriffspunktes der Mahlrolle 11 zur Drehachse 10a kleiner als der Abstand r2 des Friktionspunktes der Mahlrolle 12 zur Drehachse 10a.The transmission of the rotational movement of the grinding rollers 11, 12 on the grinding table 10 via the material to be ground 3. By virtue of the practice in practice relatively uneven Mahlgutbett the ratio of Mahlrolle to Mahlteller changes continuously. The gear ratio is ultimately determined by the distance of the point of force application between Mahlrollenachse and Mahltellerachse. In the drawing, the distance r 1 of the force application point of the grinding roller 11 to the rotation axis 10a is smaller than the distance r 2 of the friction point of the grinding roller 12 to the rotation axis 10a.

Ein unterschiedliches Übersetzungsverhältnis führt jedoch dazu, dass bei gleicher Drehzahl der Mahlrollen 11, 12 unterschiedliche Drehmomente auf den Mahlteller übertragen werden. Dadurch wird der eine Antrieb gegenüber dem anderen Antrieb abgebremst bzw. beschleunigt. Dies daraus resultierenden starken Leistungsschwankungen der Antriebe haben einen erhöhten Energiebedarf zur Folge. Außerdem wird die gewünschte Leistungsverteilung zwischen den Antrieben damit zerstört.However, a different gear ratio results in that at the same speed of the grinding rollers 11, 12 different torques are transmitted to the grinding table. As a result, one drive is braked or accelerated with respect to the other drive. The resulting strong power fluctuations of the drives result in an increased energy requirement. In addition, the desired power distribution between the drives is destroyed.

Um diese Auswirkungen zu vermeiden ist eine Leistungsausgleichsregelung 2 vorgesehen, wobei durch Regelung der Drehzahl wenigstens eines Antriebs die Leistung der Antriebe 13, 14 in einem vorgegebenen Verhältnis zueinander geregelt werden. Im dargestellten Ausführungsbeispiel sind für die beiden identisch ausgebildeten Mahlrollen 11, 12 gleiche Antriebe 13, 14 vorgesehen, sodass die Leistungsausgleichsregelung die Leistung der beiden Antriebe auf gleichem Niveau hält.In order to avoid these effects, a power compensation control 2 is provided, wherein the power of the drives 13, 14 are regulated in a predetermined ratio to each other by controlling the speed of at least one drive. In the illustrated embodiment, identical drives 13, 14 are provided for the two identically designed grinding rollers 11, 12, so that the power balance control keeps the power of the two drives at the same level.

Es wäre aber auch denkbar, dass neben ein oder mehreren Mahlrollen auch der Mahlteller über einen eigenen Antrieb verfügt. In diesem Fall könnte der Mahlteller mit einer niedrigeren oder höheren Leistung als die Mahlrollen angetrieben werden.But it would also be conceivable that in addition to one or more grinding rollers and the grinding table has its own drive. In this case, the grinding table could be driven at a lower or higher power than the grinding rollers.

Die Leistungsausgleichsregelung 2 besteht im dargestellten Ausführungsbeispiel im Wesentlichen aus je einem der Antriebe 13, 14 zugeordneten Frequenzumrichter 20, 21, einem Leistungsausgleichsregler 22, einem Mahltellerdrehzahlsensor 23 und einem Mahltellerdrehzahlregler 24.The power balancing control 2 in the illustrated embodiment consists essentially of one of the drives 13, 14 associated frequency converter 20, 21, a power compensation regulator 22, a Mahltellerdrehzahlsensor 23 and a Mahltellerdrehzahlregler 24th

Die Frequenzumrichter 20, 21 sind in an sich bekannter Art und Weise mit einer feldorientierten Regelung versehen. Sie erhalten von den Antrieben 13, 14 den momentanen Motorstrom bzw. die Motorspannung. Daraus wird die Leistungsaufnahme jedes Antriebs ermittelt und ein gleitender Summenmittelwert gebildet, der mit einem Faktor (bei gleichen Leistungen der Antriebe gleich 0,5) gewichtet wird und den Sollwert des Antriebs darstellt. Bei nahezu konstantem Widerstandmoment hängt dieser Wert im Wesentlichen nur von der Drehzahl des jeweiligen Antriebs ab.The frequency converter 20, 21 are provided in a conventional manner with a field-oriented control. You get from the drives 13, 14 the current motor current or the motor voltage. From this, the power consumption of each drive is determined and a moving sum mean value is formed, which is weighted by a factor (with the same power of the drives equal to 0.5) and represents the target value of the drive. At almost constant Resistance torque depends this value essentially only on the speed of the respective drive.

Eine Abweichung zwischen Antriebsist- und Antriebssollleistung wird auf den Leistungsausgleichregler 22 gegeben, welcher eine Leistungsanpassung der beiden Antriebe 13, 14 bewirkt, indem die Drehzahl eines oder beider Antriebe derart angepasst wird, dass die Leistung der beiden Antriebe in dem vorgegebenen Verhältnis, im vorliegenden Fall auf gleichen Niveau, geregelt wird. Dabei wird außerdem berücksichtigt, dass der Mahlteller 10 mit einer vorgegebenen Solldrehzahl nsoll dreht.A deviation between the drive actual and nominal drive power is applied to the power compensation regulator 22, which effects a power adjustment of the two drives 13, 14 by adjusting the rotational speed of one or both drives such that the power of the two drives in the predetermined ratio, in the present case at the same level. In this case, it is also taken into account that the grinding table 10 rotates at a predetermined setpoint speed n soll .

Zweckmäßigerweise ist jedoch eine zusätzliche Regelung für die Mahltellerdrehzahl vorgesehen, der hier durch den Mahltellerdrehzahlregler 24 verwirklicht ist. Der Mahltellerdrehzahlregler 24 steht mit dem Mahltellerdrehzahlsensor 23 in Verbindung und erhält laufend den Istwert der Drehzahl des Mahlteller, die mit dem Sollwert nsoll verglichen wird, woraus sich die Regelabweichung ergibt. Daraus erzeugt der Regler bei einem fest angenommenen Übersetzungsverhältnis die Solldrehzahl der Antriebe 13, 14.Appropriately, however, an additional control for the Mahltellerdrehzahl is provided, which is realized here by the Mahltellerdrehzahlregler 24. The grinding table speed controller 24 communicates with the grinding table speed sensor 23 and continuously receives the actual value of the speed of the grinding table, which is compared with the setpoint n soll , from which the control deviation results. From this, the controller generates the set speed of the drives 13, 14 at a fixed assumed ratio.

Die Frequenzumrichter 20, 21 verfügen über einen internen Drehzahlregler und ein mitlaufendes Motormodell, wodurch die Antriebsdrehzahl der Antriebe und das Motormoment abgegriffen werden können. Zweckmäßigerweise müssen die Frequenzumrichter in der Lage sein, Steuer- und Zustandsdaten spätestens aller 5 ms einzulesen bzw. auszugeben, damit die Funktion des Leistungsausgleichsreglers gewährleistet ist.The frequency converters 20, 21 have an internal speed controller and a revolving motor model, whereby the drive speed of the drives and the engine torque can be tapped. Advantageously, the frequency converter must be able to read in and output control and status data at the latest every 5 ms, so that the function of the power compensation regulator is ensured.

Regelungstechnisch stellt sich das System als Kaskadenregelung dar, wobei die einzelnen Ebenen dynamisch voneinander entkoppelt sind und somit einzeln betrachtet werden können. Der Vorteil der obenbeschriebenen Regelung besteht darin, dass mit einer Leistungsausgleichsregelung die Leistungsaufnahmen der Antriebe 13, 14 nur geringfügig voneinander abweichen und selbst starke Änderungen im System (Übersetzungssprung) sehr schnell werden.Control technology, the system is a cascade control, the individual levels are dynamically decoupled from each other and thus can be considered individually. The advantage of the regulation described above is that with a power balancing control the power consumption of the Drives 13, 14 differ only slightly and even major changes in the system (translation jump) are very fast.

Weiterhin ist von Vorteil, dass nahezu vollständig auf aufwendige und wartungsintensive Messtechnik verzichtet werden kann, da die eingesetzten Frequenzumrichter alle relevanten Daten bis auf die Mahltellerdrehzahl bereitstellen. Mit den Frequenzumrichtern können darüber hinaus die Regeleingriffe nahezu leistungslos erfolgen, sodass der Gesamtwirkungsgrad auf dem Niveau eines umgeregelten Antriebs liegt.A further advantage is that it is possible to dispense almost completely with expensive and maintenance-intensive measuring technology, since the frequency converters used provide all relevant data except for the grinding table speed. In addition, with the frequency converters, the control interventions can be performed almost without power, so that the overall efficiency is at the level of a regulated drive.

Claims (11)

  1. Method for comminuting material to be ground having a roller mill (1) which has a mill platen (10), at least one mill roller (11, 12) and at least two drives (13, 14) for driving the roller mill (1), with a compensation control operation being carried out for the drives, characterised in that
    the compensation control system is formed by a power compensation control system (2), with the power of the drives being controlled at a predetermined ratio relative to each other by the speed of at least one drive (12, 14) being controlled.
  2. Method according to claim 1, characterised in that at least two driven mill rollers (11, 12) are provided and a drive (13, 14) is associated with each mill roller.
  3. Method according to claim 2, characterised in that the mill platen (10) is driven only by means of the at least two mill rollers (11, 12) and the material (3) to be ground.
  4. Method according to one or more of the preceding claims, characterised in that the power compensation control system (2) further comprises control of the speed of the mill platen (10).
  5. Method according to one or more of the preceding claims, characterised in that the speed of the drives (13, 14) is controlled in such a manner that a predetermined speed of the mill platen (10) is further maintained.
  6. Method according to one or more of the preceding claims, characterised in that the power compensation control system (2) comprises a motor model.
  7. Method according to one or more of the preceding claims, characterised in that the control of the speed of the drives (13, 14) is carried out by means of frequency converters (10, 21).
  8. Method according to one or more of the preceding claims, characterised in that the power consumption of the drives (13, 14) is detected.
  9. Method according to one or more of the preceding claims, characterised in that an independent drive is associated with the mill platen (10).
  10. Roller mill (1) having a mill platen (10), at least one mill roller (11, 12), at least two drives (13, 14) for driving the roller mill (1) and a compensation control system for the drives,
    characterised in that the compensation control system is formed by a power compensation control system (2) which is constructed in order to carry out the method according to any one of the preceding claims.
  11. Roller mill according to claim 10, characterised in that the power compensation control system (2) comprises a frequency converter (20, 21) associated with the drives (13, 14), a power compensation control unit (22), a mill platen speed sensor (23) and a mill platen speed control unit (24).
EP08708657A 2007-02-07 2008-02-04 Method for comminuting material and roller mill Expired - Fee Related EP1973665B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007006092A DE102007006092A1 (en) 2007-02-07 2007-02-07 Process for comminuting regrind with a roller mill
PCT/EP2008/051354 WO2008095902A1 (en) 2007-02-07 2008-02-04 Method for comminuting material to be ground using a roller mill

Publications (2)

Publication Number Publication Date
EP1973665A1 EP1973665A1 (en) 2008-10-01
EP1973665B1 true EP1973665B1 (en) 2009-11-25

Family

ID=39233095

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08708657A Expired - Fee Related EP1973665B1 (en) 2007-02-07 2008-02-04 Method for comminuting material and roller mill

Country Status (7)

Country Link
US (1) US8128011B2 (en)
EP (1) EP1973665B1 (en)
JP (1) JP5208970B2 (en)
CN (1) CN101594939B (en)
DE (2) DE102007006092A1 (en)
DK (1) DK1973665T3 (en)
WO (1) WO2008095902A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008015141A1 (en) * 2008-03-20 2009-11-05 Gebr. Pfeiffer Ag roller mill
DE102008036784C5 (en) * 2008-08-07 2013-06-20 Thyssenkrupp Polysius Ag Roller mill and method for comminution of regrind
DE102008039539B4 (en) * 2008-08-25 2010-08-26 Polysius Ag roller mill
DE102009012353C5 (en) † 2009-03-09 2013-08-22 ThyssenKrupp Resource Technologies AG roller mill
DE102010016011A1 (en) * 2010-03-18 2011-09-22 Polysius Ag roller mill
FR2977170B1 (en) * 2011-06-29 2013-08-09 Cie Engrenages Et Reducteurs Messian Durand DRIVE DEVICE FOR MILLING MACHINE AND CORRESPONDING MILL
DE102012106554A1 (en) * 2012-07-19 2014-05-15 Thyssenkrupp Resource Technologies Gmbh Method and plant for comminuting regrind with a roller mill
DE102013200578A1 (en) * 2013-01-16 2014-07-17 Siemens Aktiengesellschaft Method for drive control
CN103191827B (en) * 2013-04-17 2016-04-20 北京便宜坊烤鸭集团有限公司 A kind of glutinous rice face production equipment and glutinous rice face production method
CN107774379A (en) * 2017-11-22 2018-03-09 贵州金鑫铝矿有限公司 A kind of bauxite lapping device

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219780U (en) 1975-07-29 1977-02-12
JPS5228875A (en) 1975-07-29 1977-03-04 Nippon Kogaku Kk <Nikon> Mask
JPS58159854A (en) * 1982-03-16 1983-09-22 株式会社神戸製鋼所 Method and device for driving roller of vertical roller mill
DE3815218A1 (en) * 1988-05-04 1989-11-16 Loesche Gmbh AIRFLOW MACHINE
US5050810A (en) * 1990-01-16 1991-09-24 Parham Robert L One-piece pulverizing roller
CH682809A5 (en) * 1990-12-12 1993-11-30 Buehler Ag Automatic product feed system, method for controlling the grinding of a Müllereiwalzenstuhles.
JPH07328465A (en) * 1994-06-01 1995-12-19 Mitsubishi Heavy Ind Ltd Operation of vertical roller mill
JP3565380B2 (en) * 1996-02-06 2004-09-15 中国電力株式会社 Mill characteristic measuring device
DE19702854A1 (en) 1997-01-27 1998-07-30 Krupp Polysius Ag Vertical axis mill for grinding mineral materials
FI116277B (en) * 2003-09-26 2005-10-31 Metso Paper Inc Chopping or crushing equipment, in particular chipper
DE102006050205B4 (en) * 2006-10-25 2013-03-21 Gebr. Pfeiffer Ag Safety system for roller mill
SE532429C2 (en) * 2008-05-30 2010-01-19 Sandvik Intellectual Property Device and means of limiting spinning in a gyratory crusher

Also Published As

Publication number Publication date
JP5208970B2 (en) 2013-06-12
DE502008000208D1 (en) 2010-01-07
WO2008095902A1 (en) 2008-08-14
JP2010517753A (en) 2010-05-27
CN101594939A (en) 2009-12-02
CN101594939B (en) 2012-05-30
DE102007006092A1 (en) 2008-08-14
US8128011B2 (en) 2012-03-06
US20100059611A1 (en) 2010-03-11
DK1973665T3 (en) 2010-04-12
EP1973665A1 (en) 2008-10-01

Similar Documents

Publication Publication Date Title
EP1973665B1 (en) Method for comminuting material and roller mill
EP2170517B1 (en) Roller mill and method for size reduction of ground material
EP2945749B1 (en) Drive regulating method and regulating device which operates according to the method
DE102012107043B4 (en) Roller mill and method for comminuting regrind with a roller mill
EP2937158B1 (en) Ring rolling machine
DE102007041878B4 (en) Process and roller mill for the comminution of regrind
EP3140041B1 (en) Roller mill and method for controlling a roller mill
DE602004003734T2 (en) Method and device for regulating the thickness of a rolled product
EP2874750B1 (en) Method and system for comminuting grinding stock using a roller mill
EP3239369A1 (en) Bale opener
DE102009012353B4 (en) roller mill
EP3401566A1 (en) Lifting platform drive and centrifugal brake for a lifting platform drive
DE102004008090A1 (en) Device for positioning a roller in a dyeing or dampening unit of a rotary printing machine
EP2817100B1 (en) Vertical roller mill and method for operating a vertical roller mill
DE19704702B4 (en) Elimination of loose effects in printing presses
DE918000C (en) Automatic control device on pairs of rollers
EP2233291B1 (en) Printing group and method for operating the same
DE2745684C2 (en) Cross rolling mill
AT11798U1 (en) ROTOR REFERENCE UNIT FOR RUNNING TIMBER WIRE
WO1998008608A1 (en) Device and method for the deformation of rocks and rock mixtures
DE2161669A1 (en) Hydraulically working adjusting device for rolling mills and the like

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20080725

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RTI1 Title (correction)

Free format text: METHOD FOR COMMINUTING MATERIAL AND ROLLER MILL

RBV Designated contracting states (corrected)

Designated state(s): DE DK FR

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE DK FR

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE DK FR

RIN2 Information on inventor provided after grant (corrected)

Inventor name: BERGER, MARKUS

Inventor name: ZURHOVE, FRANZ-JOSEF

Inventor name: VOELLINK, MARCO

Inventor name: KOENNING, LUDWIG

REF Corresponds to:

Ref document number: 502008000208

Country of ref document: DE

Date of ref document: 20100107

Kind code of ref document: P

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20100826

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000208

Country of ref document: DE

Representative=s name: RA U. PA VOLKMAR TETZNER; PA MICHAEL TETZNER; , DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000208

Country of ref document: DE

Representative=s name: RECHTSANW. UND PAT.-ANW. DR.-ING. DR.JUR. VOLK, DE

Effective date: 20120118

Ref country code: DE

Ref legal event code: R081

Ref document number: 502008000208

Country of ref document: DE

Owner name: THYSSENKRUPP RESOURCE TECHNOLOGIES AG, DE

Free format text: FORMER OWNER: POLYSIUS AG, 59269 BECKUM, DE

Effective date: 20120118

Ref country code: DE

Ref legal event code: R081

Ref document number: 502008000208

Country of ref document: DE

Owner name: THYSSENKRUPP RESOURCE TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: POLYSIUS AG, 59269 BECKUM, DE

Effective date: 20120118

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000208

Country of ref document: DE

Representative=s name: TETZNER & PARTNER MBB PATENT- UND RECHTSANWAEL, DE

Effective date: 20120118

Ref country code: DE

Ref legal event code: R081

Ref document number: 502008000208

Country of ref document: DE

Owner name: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG, DE

Free format text: FORMER OWNER: POLYSIUS AG, 59269 BECKUM, DE

Effective date: 20120118

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000208

Country of ref document: DE

Representative=s name: RECHTSANW. UND PAT.-ANW. DR.-ING. DR.JUR. VOLK, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502008000208

Country of ref document: DE

Owner name: THYSSENKRUPP RESOURCE TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: THYSSENKRUPP RESOURCE TECHNOLOGIES AG, 59269 BECKUM, DE

Effective date: 20130808

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000208

Country of ref document: DE

Representative=s name: RECHTSANW. UND PAT.-ANW. DR.-ING. DR.JUR. VOLK, DE

Effective date: 20130808

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000208

Country of ref document: DE

Representative=s name: RECHTSANW. UND PAT.-ANW. DR.-ING. DR.JUR. VOLK, DE

Effective date: 20130626

Ref country code: DE

Ref legal event code: R081

Ref document number: 502008000208

Country of ref document: DE

Owner name: THYSSENKRUPP RESOURCE TECHNOLOGIES GMBH, DE

Free format text: FORMER OWNER: THYSSENKRUPP POLYSIUS AG, 59269 BECKUM, DE

Effective date: 20130626

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000208

Country of ref document: DE

Representative=s name: TETZNER & PARTNER MBB PATENT- UND RECHTSANWAEL, DE

Effective date: 20130626

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000208

Country of ref document: DE

Representative=s name: TETZNER & PARTNER MBB PATENT- UND RECHTSANWAEL, DE

Effective date: 20130808

Ref country code: DE

Ref legal event code: R081

Ref document number: 502008000208

Country of ref document: DE

Owner name: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG, DE

Free format text: FORMER OWNER: THYSSENKRUPP RESOURCE TECHNOLOGIES AG, 59269 BECKUM, DE

Effective date: 20130808

Ref country code: DE

Ref legal event code: R081

Ref document number: 502008000208

Country of ref document: DE

Owner name: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG, DE

Free format text: FORMER OWNER: THYSSENKRUPP POLYSIUS AG, 59269 BECKUM, DE

Effective date: 20130626

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000208

Country of ref document: DE

Representative=s name: TETZNER & PARTNER MBB PATENT- UND RECHTSANWAEL, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000208

Country of ref document: DE

Representative=s name: TETZNER & PARTNER MBB PATENT- UND RECHTSANWAEL, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000208

Country of ref document: DE

Representative=s name: TETZNER & PARTNER MBB PATENT- UND RECHTSANWAEL, DE

Effective date: 20140519

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000208

Country of ref document: DE

Representative=s name: TETZNER & PARTNER MBB PATENT- UND RECHTSANWAEL, DE

Effective date: 20140729

Ref country code: DE

Ref legal event code: R081

Ref document number: 502008000208

Country of ref document: DE

Owner name: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG, DE

Free format text: FORMER OWNER: THYSSENKRUPP RESOURCE TECHNOLOGIES GMBH, 59269 BECKUM, DE

Effective date: 20140729

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502008000208

Country of ref document: DE

Representative=s name: TETZNER & PARTNER MBB PATENT- UND RECHTSANWAEL, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502008000208

Country of ref document: DE

Owner name: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG, DE

Free format text: FORMER OWNER: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG, 45143 ESSEN, DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20200219

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210228

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20220218

Year of fee payment: 15

Ref country code: DE

Payment date: 20220217

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502008000208

Country of ref document: DE

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

Effective date: 20230228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230228

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230901