EP0829303A1 - Ring roller mill for pressure milling of granular material - Google Patents

Ring roller mill for pressure milling of granular material Download PDF

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Publication number
EP0829303A1
EP0829303A1 EP97114172A EP97114172A EP0829303A1 EP 0829303 A1 EP0829303 A1 EP 0829303A1 EP 97114172 A EP97114172 A EP 97114172A EP 97114172 A EP97114172 A EP 97114172A EP 0829303 A1 EP0829303 A1 EP 0829303A1
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EP
European Patent Office
Prior art keywords
grinding
ring
roller
roller mill
end walls
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
EP97114172A
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German (de)
French (fr)
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EP0829303B1 (en
Inventor
Siegfried Strasser
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.)
KHD Humboldt Wedag AG
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Deutz AG
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    • 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
    • B02C15/06—Mills with rollers forced against the interior of a rotary ring, e.g. under spring action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize 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
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone
    • B02C23/32—Passing gas through crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
    • 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
    • B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier

Definitions

  • the invention relates to a ring roller mill with a rotatably mounted grinding ring, on the cylindrical inner wall or grinding path of which a roller can be pressed, with at least one good material inlet and one good material discharge and with at least one gas inlet and one gas outlet.
  • ring roller mills also called ring mills or ring roller mills
  • at least one grinding roller rotates within a rotatably mounted grinding ring and is pressed against the cylindrical inner wall or grinding path of the grinding ring.
  • the material to be comminuted to the side of the grinding ring remains on the grinding track due to the centrifugal force and is subjected to multiple compressive loads by the grinding roller.
  • the ground material is discharged from the grinding ring by displacement and / or pneumatically and is usually fed to a classifier whose coarse material fraction is recirculated to the ring roller mill (DE-A-15 07 600).
  • the rotary grinding system comprising a ring roller mill and a sifter, together with the necessary material conveying lines and transport members, are particularly useful high circuit loads necessitates high investment costs and operating costs.
  • the invention has for its object to provide a ring roller mill or a circulation grinding plant with ring roller mill and sifter, which is characterized by a compact unit and by comparatively low investment and operating costs.
  • the rod basket of a rod basket sifter is arranged within the grinding ring in the space between the grinding path and the grinding roller, by means of which an internal, rather than an external, material material cycle takes place.
  • the fine material with the desired fineness set by the speed of the rod basket and the air or gas velocity, flows through the rod basket and exits at one or more openings in the end walls of the ring roller mill together with the gas stream, while the classifying coarse material emerges from the rotating rod basket the rotating grinding path is rejected and further crushed there by means of the grinding roller until the desired good material fineness is reached.
  • the rotatably mounted grinding ring is arranged on the end face between two fixed side end walls which complement the grinding ring to form a housing, the good material inlet through one or more openings in one or in both housing end walls and the good material discharge through one or more openings in the housing end wall and / or via one or more discharge elbows laterally above the grinding roller.
  • the bearing blocks of the grinding roller and the rod basket rotor shaft are expediently arranged outside the fixed side end walls.
  • the driven grinding ring 10 of the ring roller mill z. B. on slide shoe bearings 11, 12 rotatably and within the grinding ring 10, a grinding roller 13 is arranged which can be pressed against the cylindrical inner wall or grinding track 14 of the grinding ring.
  • the grinding ring 10 is on the end face arranged between two fixed side end walls 15 and 16 which complement the grinding ring to form a housing.
  • the incoming material for the regrind 17 takes place through one or more openings 18 in one or both housing end walls 15, 16 from the side, and the material discharge is also carried out through one or both housing end walls 15, 16 through discharge openings or discharge bends 19
  • One or both side end walls 15, 16 can have one or more openings for the entry of gas flows 20 and one or more openings for the discharge of the gas flows 21.
  • the mill housing can either be supplied with fresh air or also with hot gases, so the regrind can be cooled or dried at the same time.
  • the bearing blocks 22, 23 of the grinding roller 13 are arranged outside the fixed side end walls 15, 16 and are mounted in the machine frame 24.
  • the grinding roller 13 can be pressed against the grinding path 14 of the rotating grinding ring 10.
  • the bearing blocks 22, 23 are guided between laterally attached bearing housing guides 27, 28.
  • the contact pressure of the grinding roller 13 can also be chosen so large that the energy-saving material bed comminution can also be carried out on the grinding path 14 of the grinding ring 10.
  • the rod basket 29 of a rod basket classifier is arranged, whose axis of rotation is parallel to the axis of rotation of the grinding ring 10 and the roller 13.
  • the rod basket 29 is z. B. driven by a speed-adjustable electric motor via a shaft, the bearings of which are conveniently located outside the side end walls 15, 16.
  • the discharge bends 19 On both ends of the horizontally mounted rod basket 29 are the discharge bends 19, with the gas outlets 21 of which the finely fine product is discharged from the grinding circuit, while the separator sizes separated on the rod basket 29 are discharged directly to the grinding path 14 and subjected to a further pressure reduction there.
  • the grinding ring 10 rotates at supercritical speed, so that the ground material remains on the grinding track 14.
  • the ground material remaining on the grinding path 14 is fed to the rod basket 29 by means of fixed material wipers 30, 31, 32, which are attached to the fixed side end walls 15, 16 above or to the side of the rod basket 29 and which strip off the ground material from the rotating grinding path subjected to the sighting there.
  • the material wipers 30, 31, 32 can, for. B. consist of wear-protected sheets that extend over the entire length of the rod basket 29, or when using several material wipers, individual wipers can also cover only partial areas above the rod basket 29.
  • the ring roller mill according to the invention eliminates the need for external material circulation.
  • the ring roller mill or the grinding plant can be made very compact and with a small construction volume.
  • the finished product with the desired fineness is already discharged from the mill housing.

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

Abstract

The mill has a rotary grinding ring (10) whose cylindrical inside surface forms a grinding track (14), against which a drum (13) is pressed. An inlet and outlet are provided for the material, together with a gas inlet and exhaust. The grille (29) of a sieve-cage is mounted inside the ring and between the track and the drum. The ring can be mounted between end walls (15,16) forming a housing in conjunction with it. Material flows in via one or more openings (18) in one or both walls, and out via others and/or lateral bends (19) above the drum. The bearings for the latter can be outside the walls, and scrapers can be fixed to the latter, bearing against the track (14).

Description

Die Erfindung betrifft eine Ringwalzenmühle mit einem drehbar gelagerten Mahlring, an dessen zylindrische Innenwandung bzw. Mahlbahn eine Walze andrückbar ist, mit wenigstens einem Gutmaterialeinlauf und einem Gutmaterialaustrag und mit wenigstens einem Gaseintritt und einem Gasabzug.The invention relates to a ring roller mill with a rotatably mounted grinding ring, on the cylindrical inner wall or grinding path of which a roller can be pressed, with at least one good material inlet and one good material discharge and with at least one gas inlet and one gas outlet.

Bei Ringwalzenmühlen, auch Ringmühlen oder Ringrollenmühlen genannt, rotiert innerhalb eines drehbar gelagerten Mahlrings wenigstens eine Mahlwalze, die an die zylindrische Innenwandung bzw. Mahlbahn des Mahlrings angedrückt ist. Das dem Mahlring seitlich zugeführte zu zerkleinernde Gutmaterial bleibt infolge der Fliehkraft auf der Mahlbahn liegen und wird von der Mahlwalze mehrfach einer Druckbeanspruchung unterworfen. Das gemahlene Gut wird durch Verdrängung und/oder pneumatisch aus dem Mahlring ausgetragen und in der Regel einem Sichter zugeleitet, dessen Grobgutfraktion zur Ringwalzenmühle rezirkuliert wird (DE-A-15 07 600). Es versteht sich, daß die eine Ringwalzenmühle und einen Sichter umfassende Umlaufmahlanlage zusammen mit ihren notwendigen Gutmaterial-Förderleitungen und Transportorganen besonders bei hohen Kreislauflasten hohe Investitionskosten und Betriebskosten erforderlich macht.In the case of ring roller mills, also called ring mills or ring roller mills, at least one grinding roller rotates within a rotatably mounted grinding ring and is pressed against the cylindrical inner wall or grinding path of the grinding ring. The material to be comminuted to the side of the grinding ring remains on the grinding track due to the centrifugal force and is subjected to multiple compressive loads by the grinding roller. The ground material is discharged from the grinding ring by displacement and / or pneumatically and is usually fed to a classifier whose coarse material fraction is recirculated to the ring roller mill (DE-A-15 07 600). It goes without saying that the rotary grinding system comprising a ring roller mill and a sifter, together with the necessary material conveying lines and transport members, are particularly useful high circuit loads necessitates high investment costs and operating costs.

Der Erfindung liegt die Aufgabe zugrunde, eine Ringwalzenmühle bzw. eine Umlaufmahlanlage mit Ringwalzenmühle und Sichter zu schaffen, die sich durch eine möglichst kompakte Einheit und durch vergleichsweise niedrige Investitions- und Betriebskosten auszeichnet.The invention has for its object to provide a ring roller mill or a circulation grinding plant with ring roller mill and sifter, which is characterized by a compact unit and by comparatively low investment and operating costs.

Diese Aufgabe wird gemäß der Erfindung mit den Maßnahmen des Kennzeichnungsteils des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen angegeben.This object is achieved according to the invention with the measures of the characterizing part of claim 1. Advantageous refinements are specified in the subclaims.

Charakteristisch für die erfindungsgemäße Ringwalzenmühle ist, daß innerhalb des Mahlrings im Raum zwischen der Mahlbahn und der Mahlwalze der Stabkorb eines Stabkorbsichters angeordnet ist, durch welchen nicht ein externer, sondern ein interner Gutmaterialkreislauf zustande kommt. Das Feingut mit der gewünschten Feinheit, durch die Drehzahl des Stabkorbs und die Luft- bzw. Gasgeschwindigkeit eingestellt, strömt durch den Stabkorb und tritt an einer oder mehreren Öffnungen in den Stirnwänden der Ringwalzenmühle zusammen mit dem Gasstrom aus, während das Sichtergrobgut vom rotierenden Stabkorb auf die rotierende Mahlbahn abgewiesen und dort durch weitere Druckbeanspruchung vermittels der Mahlwalze weiter zerkleinert wird, bis die gewünschte Gutmaterialfeinheit erreicht ist.It is characteristic of the ring roller mill according to the invention that the rod basket of a rod basket sifter is arranged within the grinding ring in the space between the grinding path and the grinding roller, by means of which an internal, rather than an external, material material cycle takes place. The fine material with the desired fineness, set by the speed of the rod basket and the air or gas velocity, flows through the rod basket and exits at one or more openings in the end walls of the ring roller mill together with the gas stream, while the classifying coarse material emerges from the rotating rod basket the rotating grinding path is rejected and further crushed there by means of the grinding roller until the desired good material fineness is reached.

Nach einem besonderen Merkmal der Erfindung ist bei der erfindungsgemäßen Ringwalzenmühle der drehbar gelagerte Mahlring stirnseitig zwischen zwei feststehenden, den Mahlring zu einem Gehäuse ergänzenden Seiten-Stirnwänden angeordnet, wobei der Gutmaterialeinlauf durch eine oder mehrere Öffnungen in einer oder in beiden Gehäuse-Stirnwänden und der Gutmaterialaustrag durch eine oder mehrere Öffnungen in der Gehäuse-Stirnwand und/oder über einen oder mehrere Austragskrümmer seitlich oberhalb der Mahlwalze erfolgen. Die Lagerböcke der Mahlwalze sowie der Stabkorb-Rotorwelle sind zweckmäßiger Weise außerhalb der feststehenden Seiten-Stirnwände angeordnet.According to a special feature of the invention, in the ring roller mill according to the invention, the rotatably mounted grinding ring is arranged on the end face between two fixed side end walls which complement the grinding ring to form a housing, the good material inlet through one or more openings in one or in both housing end walls and the good material discharge through one or more openings in the housing end wall and / or via one or more discharge elbows laterally above the grinding roller. The bearing blocks of the grinding roller and the rod basket rotor shaft are expediently arranged outside the fixed side end walls.

Die Erfindung und deren weitere Merkmale und Vorteile werden anhand des in den Figuren schematisch dargestellten Ausführungsbeispieles näher erläutert.The invention and its further features and advantages are explained in more detail with reference to the exemplary embodiment shown schematically in the figures.

Es zeigt:

Fig. 1:
einen Vertikalschnitt durch die erfindungsgemäße Ringwalzenmühle, teilweise in Ansicht, in einer Ebene quer zur Rotationsachse des Mahlrings, und
Fig. 2:
einen Vertikalschnitt durch die Ringwalzenmühle in einer Ebene, in welcher die Rotationsachse liegt.
It shows:
Fig. 1:
a vertical section through the ring roller mill according to the invention, partially in view, in a plane transverse to the axis of rotation of the grinding ring, and
Fig. 2:
a vertical section through the ring roller mill in a plane in which the axis of rotation lies.

Nach Fig. 1 ist der angetriebene Mahlring 10 der Ringwalzenmühle z. B. auf Gleitschuhlagern 11, 12 drehbar gelagert und innerhalb des Mahlrings 10 ist eine Mahlwalze 13 angeordnet, die an die zylindrische Innenwandung bzw. Mahlbahn 14 des Mahlrings andrückbar ist. Wie aus Fig. 2 hervorgeht, ist der Mahlring 10 stirnseitig zwischen zwei feststehenden, den Mahlring zu einem Gehäuse ergänzenden Seiten-Stirnwänden 15 und 16 angeordnet. Der Guteinlauf für das Mahlgut 17 erfolgt durch eine oder mehrere Öffnungen 18 in einer oder in beiden Gehäuse-Stirnwänden 15, 16 von der Seite, und der Gutmaterialaustrag erfolgt ebenfalls durch eine oder durch beide Gehäuse-Stirnwände 15, 16 durch Austragsöffnungen bzw. Austragskrümmer 19. Eine oder beide Seiten-Stirnwände 15, 16 können eine oder mehrere Öffnungen zum Eintritt von Gasströmungen 20 und eine oder mehrere Öffnungen zum Abzug der Gasströmungen 21 aufweisen.1, the driven grinding ring 10 of the ring roller mill z. B. on slide shoe bearings 11, 12 rotatably and within the grinding ring 10, a grinding roller 13 is arranged which can be pressed against the cylindrical inner wall or grinding track 14 of the grinding ring. As can be seen from FIG. 2, the grinding ring 10 is on the end face arranged between two fixed side end walls 15 and 16 which complement the grinding ring to form a housing. The incoming material for the regrind 17 takes place through one or more openings 18 in one or both housing end walls 15, 16 from the side, and the material discharge is also carried out through one or both housing end walls 15, 16 through discharge openings or discharge bends 19 One or both side end walls 15, 16 can have one or more openings for the entry of gas flows 20 and one or more openings for the discharge of the gas flows 21.

Auf diese Weise kann das Mühlengehäuse, je nach Anforderungen, entweder mit Frischluft oder auch mit Heißgasen beaufschlagt werden, das umlaufende Mahlgut kann also gleichzeitig gekühlt oder auch getrocknet werden.In this way, depending on the requirements, the mill housing can either be supplied with fresh air or also with hot gases, so the regrind can be cooled or dried at the same time.

Die Lagerböcke 22, 23 der Mahlwalze 13 sind außerhalb der feststehenden Seiten-Stirnwände 15, 16 angeordnet und im Maschinenrahmen 24 gelagert. Mittels der zwischen den Lagerböcken 22, 23 und dem Maschinenrahmen 24 angeordneten hydraulischen Spannvorrichtungen 25, 26 ist die Mahlwalze 13 gegen die Mahlbahn 14 des rotierenden Mahlrings 10 andrückbar. Wie in Fig. 1 zu erkennen, sind die Lagerböcke 22, 23 zwischen seitlich angebrachten Lagergehäuseführungen 27, 28 geführt. Die Anpreßkraft der Mahlwalze 13 kann dabei auch so groß gewählt werden, daß auf der Mahlbahn 14 des Mahlrings 10 auch die energiesparende Gutbettzerkleinerung durchgeführt werden kann.The bearing blocks 22, 23 of the grinding roller 13 are arranged outside the fixed side end walls 15, 16 and are mounted in the machine frame 24. By means of the hydraulic clamping devices 25, 26 arranged between the bearing blocks 22, 23 and the machine frame 24, the grinding roller 13 can be pressed against the grinding path 14 of the rotating grinding ring 10. As can be seen in FIG. 1, the bearing blocks 22, 23 are guided between laterally attached bearing housing guides 27, 28. The contact pressure of the grinding roller 13 can also be chosen so large that the energy-saving material bed comminution can also be carried out on the grinding path 14 of the grinding ring 10.

Innerhalb des Mahlrings 10 ist im Raum zwischen der Mahlbahn 14 und der Walze 13 oberhalb derselben der Stabkorb 29 eines Stabkorbsichters angeordnet, dessen Rotationsachse parallel zur Rotationsachse des Mahlrings 10 sowie der Walze 13 liegt. Der Stabkorb 29 wird z. B. über einen drehzahlregelbaren Elektromotor über eine Welle angetrieben, deren Lagerungen sich zweckmäßiger Weise außerhalb der Seiten-Stirnwände 15, 16 befinden. An beiden Stirnenden des horizontal gelagerten Stabkorbs 29 schließen sich die Austragskrümmer 19 an, mit deren Gasabzügen 21 das fertigfeine Produkt aus dem Mahlkreislauf ausgetragen wird, während die am Stabkorb 29 abgeschiedenen Sichtergrieße direkt zur Mahlbahn 14 abgeleitet und dort einer weiteren Druckzerkleinerung unterzogen werden.Within the grinding ring 10 in the space between the grinding track 14 and the roller 13 above the rod basket 29 of a rod basket classifier is arranged, whose axis of rotation is parallel to the axis of rotation of the grinding ring 10 and the roller 13. The rod basket 29 is z. B. driven by a speed-adjustable electric motor via a shaft, the bearings of which are conveniently located outside the side end walls 15, 16. On both ends of the horizontally mounted rod basket 29 are the discharge bends 19, with the gas outlets 21 of which the finely fine product is discharged from the grinding circuit, while the separator sizes separated on the rod basket 29 are discharged directly to the grinding path 14 and subjected to a further pressure reduction there.

Der Mahlring 10 dreht mit überkritischer Drehzahl, so daß das Mahlgut auf der Mahlbahn 14 liegen bleibt. Das an der Mahlbahn 14 liegenbleibende Mahlgut wird mittels feststehender Materialabstreifer 30, 31, 32, die oberhalb oder seitlich des Stabkorbs 29 an den feststehenden Seiten-Stirnwänden 15, 16 befestigt sind und die das Mahlgut von der rotierenden Mahlbahn abstreifen, dem Stabkorb 29 zugeführt und dort der Sichtung unterzogen. Die Materialabstreifer 30, 31, 32 können z. B. aus verschleißgeschützten Blechen bestehen, die sich über die gesamte Länge des Stabkorbs 29 erstrecken, oder bei Anwendung mehrerer Materialabstreifer können einzelne Abstreifer auch nur Teilbereiche oberhalb des Stabkorbs 29 abdecken.The grinding ring 10 rotates at supercritical speed, so that the ground material remains on the grinding track 14. The ground material remaining on the grinding path 14 is fed to the rod basket 29 by means of fixed material wipers 30, 31, 32, which are attached to the fixed side end walls 15, 16 above or to the side of the rod basket 29 and which strip off the ground material from the rotating grinding path subjected to the sighting there. The material wipers 30, 31, 32 can, for. B. consist of wear-protected sheets that extend over the entire length of the rod basket 29, or when using several material wipers, individual wipers can also cover only partial areas above the rod basket 29.

Die erfindungsgemäße Ringwalzenmühle macht einen äußeren Materialumlauftransport überflüssig. Die Ringwalzenmühle bzw. die Mahlanlage kann sehr kompakt und mit geringem Bauvolumen ausgeführt werden. Aus dem Mühlengehäuse wird bereits das Fertigprodukt mit der gewünschten Feinheit ausgetragen.The ring roller mill according to the invention eliminates the need for external material circulation. The ring roller mill or the grinding plant can be made very compact and with a small construction volume. The finished product with the desired fineness is already discharged from the mill housing.

Claims (4)

Ringwalzenmühle mit einem drehbar gelagerten Mahlring (10), an dessen zylindrische Innenwandung bzw. Mahlbahn (14) eine Walze (13) andrückbar ist, mit wenigstens einem Gutmaterialeinlauf und einem Gutmaterialaustrag und mit wenigstens einem Gaseintritt und einem Gasabzug, dadurch gekennzeichnet, daß innerhalb des Mahlrings (10) im Raum zwischen der Mahlbahn (14) und der Walze (13) der Stabkorb (29) eines Stabkorbsichters angeordnet ist.Ring roller mill with a rotatably mounted grinding ring (10), on the cylindrical inner wall or grinding track (14) of which a roller (13) can be pressed, with at least one good material inlet and one good material discharge and with at least one gas inlet and one gas outlet, characterized in that within the Grinding rings (10) in the space between the grinding track (14) and the roller (13) of the rod basket (29) of a rod basket sifter is arranged. Ringwalzenmühle insbesondere nach Anspruch 1, dadurch gekennzeichnet, daß der drehbar gelagerte Mahlring (10) stirnseitig zwischen zwei feststehenden, den Mahlring zu einem Gehäuse ergänzenden Seiten-Stirnwänden (15, 16) angeordnet ist, wobei der Gutmaterialeinlauf (17) durch eine oder mehrere Öffnungen (18) in einer oder in beiden Gehäuse-Stirnwänden (15, 16) und der Gutmaterialaustrag (21) durch eine oder mehrere Öffnungen in der Gehäuse-Stirnwand und/oder über einen oder mehrere Austragskrümmer (19) seitlich oberhalb der Mahlwalze (13) erfolgen.Ring roller mill in particular according to claim 1, characterized in that the rotatably mounted grinding ring (10) is arranged on the face between two fixed side end walls (15, 16) which complement the grinding ring to form a housing, the good material inlet (17) through one or more openings (18) in one or both housing end walls (15, 16) and the material discharge (21) through one or more openings in the housing end wall and / or via one or more discharge elbows (19) laterally above the grinding roller (13) respectively. Ringwalzenmühle nach Anspruch 2, dadurch gekennzeichnet, daß die Lagerböcke (22, 23) der Walze (13) außerhalb der feststehenden Seiten-Stirnwände (15, 16) angeordnet sind.Ring roller mill according to claim 2, characterized in that the bearing blocks (22, 23) of the roller (13) are arranged outside the fixed side end walls (15, 16). Ringwalzenmühle nach Anspruch 1, dadurch gekennzeichnet, daß oberhalb oder seitlich des Stabkorbs (29) wenigstens ein feststehender Materialabstreifer (30, 31, 32) angeordnet ist, der an den feststehenden Seiten-Stirnwänden (15, 16) befestigt ist, wodurch Mahlgut von der rotierenden Mahlbahn (14) des Mahlrings (10) abgestreift und dem Stabkorb (29) zur Sichtung aufgegeben wird.Ring roller mill according to claim 1, characterized in that above or to the side of the rod basket (29) at least one fixed material scraper (30, 31, 32) is arranged, which is fastened to the fixed side end walls (15, 16), whereby regrind from the stripped rotating grinding track (14) of the grinding ring (10) and the rod basket (29) is given for sifting.
EP97114172A 1996-09-13 1997-08-16 Ring roller mill for pressure milling of granular material Expired - Lifetime EP0829303B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19637274A DE19637274A1 (en) 1996-09-13 1996-09-13 Ring roller mill for pressure reduction of granular good material
DE19637274 1996-09-13

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EP0829303A1 true EP0829303A1 (en) 1998-03-18
EP0829303B1 EP0829303B1 (en) 2001-12-12

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DE (2) DE19637274A1 (en)
DK (1) DK0829303T3 (en)

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WO2013079883A1 (en) * 2011-12-02 2013-06-06 Fives Fcb Compressive grinder for a bed of materials
CN107520038A (en) * 2017-09-02 2017-12-29 合肥今越制药有限公司 One kind makes Bike tablet whole grain screening machine
RU2701679C2 (en) * 2014-10-10 2019-09-30 Фив Фсб Grinder for crushing by compressing material layer
CN114193612A (en) * 2021-12-07 2022-03-18 陈晶亮 Ceramic glaze processing method

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DE19955139A1 (en) * 1999-11-17 2001-07-05 Thomas Adamec Method of comminuting electronic scrap, involves using an annular roller mill in which several rollers rotate towards an outer ring and comminution of the electronic scrap takes place

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FR2983418A1 (en) * 2011-12-02 2013-06-07 Fives Fcb COMPRESSOR BINDER OF BED OF MATERIALS
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RU2701679C2 (en) * 2014-10-10 2019-09-30 Фив Фсб Grinder for crushing by compressing material layer
CN107520038A (en) * 2017-09-02 2017-12-29 合肥今越制药有限公司 One kind makes Bike tablet whole grain screening machine
CN114193612A (en) * 2021-12-07 2022-03-18 陈晶亮 Ceramic glaze processing method

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DE59705747D1 (en) 2002-01-24
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EP0829303B1 (en) 2001-12-12

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