EP0511515B1 - Floculation roller crusher - Google Patents
Floculation roller crusher Download PDFInfo
- Publication number
- EP0511515B1 EP0511515B1 EP92105749A EP92105749A EP0511515B1 EP 0511515 B1 EP0511515 B1 EP 0511515B1 EP 92105749 A EP92105749 A EP 92105749A EP 92105749 A EP92105749 A EP 92105749A EP 0511515 B1 EP0511515 B1 EP 0511515B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- pressure
- accumulator
- roll mill
- return
- 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 - Lifetime
Links
- 238000004140 cleaning Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 5
- 230000003311 flocculating effect Effects 0.000 claims 1
- 239000008187 granular material Substances 0.000 claims 1
- 230000016615 flocculation Effects 0.000 abstract 1
- 238000005189 flocculation Methods 0.000 abstract 1
- 239000012528 membrane Substances 0.000 description 9
- 238000005096 rolling process Methods 0.000 description 4
- 238000011109 contamination Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/286—Feeding devices
Definitions
- the invention relates to a rolling mill, in particular a flaking mill according to the preamble of claim 1.
- a flaking mill of this type is known for example from EP-A-0 271 828. It is essential that return lines are provided. So that these can act as return lines, they must open out above the nip, that is, above the point at which the rollers come closest to each other.
- the junction can be selected such that the material to be flocculated is fed directly into the nip. However, it has been shown for some products that the junction was difficult to choose correctly. The reason for the particles falling in at different distances from the end of the rollers was initially not clear.
- DE-A-26 15 585 discloses an improved sealing of the roll gap by means of a wedge arranged in front of the roll gap, which serves as a guide plate for the material to be treated. In this way, liquid material to be treated can escape laterally.
- the invention is therefore based on the object of achieving a further equalization of the wear of the rolls in that the particles are brought into the roll gap at a predetermined distance from their ends. This is achieved in a surprisingly simple manner by the characterizing features of claim 1.
- the invention is based on the knowledge gained through investigations that certain products tend to settle or settle in the return ducts, which occurs in particular on the return duct floor, thereby shifting the junction upwards.
- the arrangement of at least one cleaning device ensures that the confluence point always remains at the same height.
- Such a cleaning device can be designed differently within the scope of the invention and work in different ways.
- an intermittent mode of operation can be provided in which brushes, e.g. with a rotary drive, are dipped into the return shaft from time to time.
- the cleaning device is preferably designed in the sense of claim 2. In this case, a rigid arrangement is facilitated.
- a rolling mill according to FIG. 1 has two rolls 1 and 2, one roll preferably being designed as a fixed roll and the further roll being pressed against it in parallel.
- a nip 3 is formed between the two rolls 1 and 2, i.e. an area where the grains of the product are caught and crushed.
- a filling box 4 with an internal mixing device is provided above the rollers 1 and 2, vertically above the nip 3, a filling box 4 with an internal mixing device is provided. From the filling box 4, the material to be treated is fed to the nip 3 via a feed roller 5.
- return lines 6 are provided in a central area between the rolls 1 and 2, which are channel-shaped and open above the roll gap with a guide surface 7 into the area between the rolls.
- the product return can be impaired by the application of a contamination layer made of fine particles of the product in the return line 6, in particular on the guide surface 7.
- cleaning devices for the return lines are provided according to the invention.
- at least one blow pipe 8 is provided for each return line 6, which ends at one end in the return line 6.
- a compressed air device is provided to supply the blow pipes 8 with air, preferably consisting of a drive 9, a pump 10 and a switch 11 which switches the pump on and off.
- a valve 12 can optionally be used to set one of at least two operating modes of the air supply to the blowpipes 8.
- the simplest operating mode provides for a direct connection of the pump 10 via the valve 12 and lines 13 and 14 to the blowpipes 8. This operating mode is used during interruptions in operation and for shorter times during the operation of the rolling mill in order to remove deposits.
- a special embodiment of an air blast device essentially consists of a pressure accumulator 15, which is fed by the pump 10 via the line 16 and the valve 12. Inside the pressure accumulator 15 is at least one end of a tube 17, the other end of which is closed and the interior 18 of which is connected to the blowpipes 8 via lines 19 and 14. The end of the tube 17 located in the pressure accumulator 15 is covered by a membrane 20 projecting beyond the tube cross section. The edge of the membrane 20 is contained in the wall of the pressure accumulator 15, so that the membrane 20 divides the pressure accumulator into two partial spaces 21 and 22. Of the Partial space 21 is delimited by the inner surface of the wall of the pressure accumulator 15, by the outer surface of the tube 17 lying in the pressure accumulator 15 and by the area of the membrane 20 which extends beyond the tube cross section.
- the subspace 22 is located on the side of the membrane 20 opposite the tube 17 and serves to apply a contact pressure p1 of the membrane 20 to the end of the tube 17.
- the air supply from the pump 10 via the valve 12, a line, is used to generate the contact pressure p1 24, a throttle valve 26, a check valve 25 and a contact pressure opening 23 to the subspace 22, as well as the venting of the subspace 22 through a throttle cross section 27. If the pressure in the subspace 21 rises above a certain value above the contact pressure p1, the membrane becomes as a result of its part projecting beyond the pipe cross section, which is under the increased pressure, lifted off, so that the spaces 21 and 18 are connected to one another.
- a compressed air blast goes from the subspace 21 through the pipe interior 18, through the lines 19 and 14 and through the blow pipes 8 into the return lines 6.
- the compressed air blast also goes through a line 27 and a check valve 28 into the subspace 22 , where the pressure increase causes the membrane 20 to be applied to the pipe opening and then the pressure in the subspace 21 to rise and thus the start of a new pressure surge cycle.
- a special embodiment according to FIG. 2 provides 8 valve heads 29 at the ends of the blowpipes located in the return lines 6. These valve heads 29 have at least one, but possibly a plurality of nozzle openings 30 pointing in different directions.
- a blow pipe 8 or a nozzle head 29 could also be moved along the respective return duct 6 if this should be necessary.
- the device 15-28 is in itself arbitrary Modifiable, for example, that the membrane 20 is loaded by a spring instead of the action of the line 27.
- a correspondingly controlled valve could also be used, for example with a manually operable control and / or an electronic control instead of the pneumatic interval control shown.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Cleaning In General (AREA)
- Disintegrating Or Milling (AREA)
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
- Fats And Perfumes (AREA)
- Sink And Installation For Waste Water (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Crushing And Grinding (AREA)
Abstract
Description
Die Erfindung betrifft ein Walzwerk, insbesondere ein Flockierwalzwerk nach dem Oberbegriff des Anspruchs 1.The invention relates to a rolling mill, in particular a flaking mill according to the preamble of
Ein Flockierwalzwerk dieser Art ist beispielsweise aus der EP-A-0 271 828 bekannt. Wesentlich daran ist, dass Rückführleitungen vorgesehen sind. Damit diese als Rückführleitungen wirken können, müssen sie oberhalb des Walzenspaltes einmünden, also oberhalb jener Stelle an der die Walzen einander am nächsten kommen. Dabei ist die Einmündungsstelle gut derart wählbar, dass das zu flockierende Gut direkt in den Walzenspalt geführt wird. Allerdings hat sich bei einigen Produkten gezeigt, dass die Einmündungsstelle nur schwer richtig wählbar war. Der Grund für das Einfallen der Partikel in unterschiedlichen Entfernungen vom Stirnende der Walzen war zunächst nicht klar.A flaking mill of this type is known for example from EP-A-0 271 828. It is essential that return lines are provided. So that these can act as return lines, they must open out above the nip, that is, above the point at which the rollers come closest to each other. The junction can be selected such that the material to be flocculated is fed directly into the nip. However, it has been shown for some products that the junction was difficult to choose correctly. The reason for the particles falling in at different distances from the end of the rollers was initially not clear.
Die DE-A-26 15 585 offenbart eine verbesserte Abdichtung des Walzenspaltes mittels eines vor dem Walzenspalt angeordneten Keils, der als Führungsschild für das Behandlungsgut dient. Hierdurch soll ein seitliches Austreten von flüssigem Behandlungsgut erreicht werden.DE-A-26 15 585 discloses an improved sealing of the roll gap by means of a wedge arranged in front of the roll gap, which serves as a guide plate for the material to be treated. In this way, liquid material to be treated can escape laterally.
Der Erfindung liegt daher die Aufgabe zugrunde, eine weitere Vergleichmässigung der Abnützung der Walzen dadurch zu erreichen, dass die Partikel zum Einfallen in den Walzenspalt in vorbestimmter Entfernung von deren Stirnenden gebracht werden. Dies gelingt in überraschend einfacher Weise durch die kennzeichnenden Merkmale des Anspruches 1.The invention is therefore based on the object of achieving a further equalization of the wear of the rolls in that the particles are brought into the roll gap at a predetermined distance from their ends. This is achieved in a surprisingly simple manner by the characterizing features of
In einem ersten Schritt geht die Erfindung nämlich von der durch Untersuchungen gewonnenen Erkenntnis aus, dass gewisse Produkte dazu neigen, sich in den Rückführkanälen an- bzw. abzusetzen, was insbesondere am Rückführkanalboden geschieht, womit die Einmündungsstelle nach oben verschoben wird. Durch die Anordnung mindestens einer Reinigungseinrichtung wird gesichert, dass die Einmündungsstelle stets in derselben Höhe bleibt.In a first step, the invention is based on the knowledge gained through investigations that certain products tend to settle or settle in the return ducts, which occurs in particular on the return duct floor, thereby shifting the junction upwards. The arrangement of at least one cleaning device ensures that the confluence point always remains at the same height.
Eine solche Reinigungseinrichtung kann im Rahmen der Erfindung verschieden ausgebildet sein und auf verschiedene Weise arbeiten. Beispielsweise kann eine intermittierende Betriebsweise vorgesehen sein, bei der Bürsten, z.B. mit einem Rotationsantrieb, von Zeit zu Zeit in den Rückführschacht getaucht werden. Bevorzugt ist die Reinigungseinrichtung jedoch im Sinne des Anspruches 2 ausgebildet. In diesem Falle wird nämlich eine starre Anordnung erleichtert.Such a cleaning device can be designed differently within the scope of the invention and work in different ways. For example, an intermittent mode of operation can be provided in which brushes, e.g. with a rotary drive, are dipped into the return shaft from time to time. However, the cleaning device is preferably designed in the sense of
Die Erfindung wird anhand schematischer Zeichnungen näher erläutert. Es zeigen
- Fig. 1
- ein Walzwerk im Schrägriss mit einem Diagramm eines Reinigungs-Luftsystems; und
- Fig. 2
- eine Produktrückführung mit Reinigungs-Blasrohr in Seitenansicht, teilweise im Schnitt.
- Fig. 1
- a rolling mill in oblique crack with a diagram of a cleaning air system; and
- Fig. 2
- a product return with cleaning blowpipe in side view, partly in section.
Ein Walzwerk gemäss Fig. 1 weist zwei Walzen 1 und 2 auf, wobei vorzugsweise eine Walze als Festwalze ausgebildet ist und die weitere Walze gegen diese parallel gedrückt wird. Zwischen den beiden Walzen 1 und 2 ist ein Walzenspalt 3 gebildet, d.h. ein Bereich, in dem die Körner des Produktes erfasst und gequetscht werden. Oberhalb der Walzen 1 und 2 , vertikal über dem Walzenspaltes 3 ist ein Einfüllkasten 4 mit einer innliegenden Mischeinrichtung vorgesehen. Vom Einfüllkasten 4 wird das zu behandelnde Gut über eine Speisewalze 5 dem Walzenspalt 3 zugeführt.A rolling mill according to FIG. 1 has two
Zu beiden axialen Enden der Walzen 1 und 2 sind in einem mittleren Bereich zwischen den Walzen 1 und 2 Rückführleitungen 6 vorgesehen, die rinnenförmig ausgebildet sind und oberhalb des Walzenspaltes mit einer Führungsfläche 7 in den Bereich zwischen den Walzen münden. Durch die Rückführung des über den Walzenrand hinausgeförderten Produktes wird die Produktzuführung über die Walzenlänge vergleichmässigt, ja sogar am Walzenende etwas erhöht, sodass eine zu geringe Walzenabnützung an den axialen Enden vermieden wird.To both axial ends of the
Die Produkte-Rückführung kann durch das Ansetzen einer Verschmutzungsschicht aus Feinteilen des Produktes in der Rückführleitung 6, insbesondere auf der Führungsfläche 7, beeinträchtigt werden. Um eine solche Verschmutzung zu vermeiden, sind erfindungsgemäss Reinigungsvorrichtungen für die Rückführleitungen vorgesehen. In einer speziellen Ausführungsform ist für jede Rückführleitung 6 mindestens ein Blasrohr 8 vorgesehen, welches mit einem Ende in die Rückführleitung 6 mündet. Zur Speisung der Blasrohre 8 mit Luft ist ein Druckluftgerät vorgesehen, vorzugsweise aus einem Antrieb 9, einer Pumpe 10 und einem Schalter 11, der die Pumpe ein- und ausschaltet, bestehend. Mit einem Ventil 12 kann wahlweise eine von mindestens zwei Betriebsarten der Luftspeisung der Blasrohre 8 eingestellt werden. Die einfachste Betriebsart sieht eine direkte Verbindung der Pumpe 10 über das Ventil 12 und Leitungen 13 und 14 zu den Blasrohren 8 vor. Diese Betriebsart wird während Betriebsunterbrüchen und für kürzere Zeiten während des Betriebs des Walzwerkes verwendet, um Ablagerungsansätze zu beseitigen.The product return can be impaired by the application of a contamination layer made of fine particles of the product in the
Eine weitere Betriebsart erzeugt mit der Hilfe einer Luftstoss-Vorrichtung einen intermitierenden Reinigungs-Luftstrom, der während des Walzenbetriebes das Ansetzen von Feinteilen in den Rückführleitungen 6 verhindert. Eine spezielle Ausführung einer Luftstoss-Vorrichtung besteht im Wesentlichen aus einem Druckspeicher 15, der über die Leitung 16 und das Ventil 12 von der Pumpe 10 gespiesen wird. Im Innern des Druckspeichers 15 liegt mindestens das eine Ende eines Rohres 17, dessen anderes Ende verschlossen ist und dessen Innenraum 18 über die Leitungen 19 und 14 mit den Blasrohren 8 verbunden ist. Das im Druckspeicher 15 liegende Ende des Rohres 17 wird von einer über den Rohrquerschnitt hinausragenden Membran 20 überdeckt. Der Rand der Membran 20 ist in der Wandung des Druckspeichers 15 gefasst, sodass die Membran 20 den Druckspeicher in zwei Teilräume 21 und 22 unterteilt. Der Teilraum 21 wird durch die Innenfläche der Wandung des Druckspeichers 15, durch die im Druckspeicher 15 liegende Aussenfläche des Rohres 17 und durch den über den Rohrquerschnitt hinausstehenden Bereich der Membran 20 begrenzt.Another mode of operation generates an intermittent cleaning air flow with the help of an air blast device, which prevents fine particles from accumulating in the
Der Teilraum 22 liegt auf der dem Rohr 17 gegenüberliegenden Seite der Membran 20 und dient zum Anlegen eines Anpressdruckes p1 der Membran 20 an das Ende des Rohres 17. Zur Erzeugung des Anpressdruckes p1 dient die Luftzufuhr von der Pumpe 10 über das Ventil 12, eine Leitung 24, ein Drosselventil 26, ein Rückschlagventil 25 und eine Anpressdruck-Oeffnung 23 zum Teilraum 22, sowie die Entlüftung des Teilraumes 22 durch einen Drosselquerschnitt 27. Steigt der Druck im Teilraum 21 über einen bestimmten über dem Anpressdruck p1 liegenden Wert, so wird die Membran infolge ihres über den Rohrquerschnitt hinausragenden Teils, der unter dem erhöhten Druck steht, abgehoben, sodass die Räume 21 und 18 miteinander verbunden werden. Durch diese Verbindung geht vom Teilraum 21 ein Druckluft-Stoss durch den Rohrinnenraum 18, durch die Leitungen 19 und 14 und durch die Blasrohre 8 in die Rückführleitungen 6. Der Druckluft-Stoss geht ebenfalls durch eine Leitung 27 und ein Rückschlagventil 28 in den Teilraum 22, wo die Druckerhöhung ein Anlegen der Membran 20 an die Rohröffnung und ein anschliessendes Ansteigen des Druckes im Teilraum 21 und somit den Beginn eines neuen Druckstoss-Zyklus bewirkt.The
Eine spezielle Ausführungsform gemäss Fig. 2 sieht an den in den Rückführleitungen 6 liegenden Enden der Blasrohre 8 Ventilköpfe 29 vor. Diese Ventilköpfe 29 haben mindestens eine, gegebenenfalls aber mehrere in verschiedene Richtungen weisende Düsenöffnungen 30.A special embodiment according to FIG. 2 provides 8
Im Rahmen der Erfindung sind zahlreiche Varianten denkbar; so könnte auch ein Blasrohr 8 bzw. ein Düsenkopf 29 entlang des jeweiligen Rückführkanales 6 bewegt werden, falls dies erforderlich sein sollte. Auch ist die Einrichtung 15-28 an sich beliebig abwandelbar, z.B. dass an Stelle der Beaufschlagung durch die Leitung 27 die Membrane 20 durch eine Feder belastet wird. Natürlich wäre statt des druckabhängig öffnenden Membranventiles 20 auch ein entsprechend gesteuertes Ventil einsetzbar, z.B. mit einer von Hand aus betätigbaren Steuerung und/oder einer elektronischen Steuerung an Stelle der gezeigten pneumatischen Intervallsteuerung.Numerous variants are conceivable within the scope of the invention; a
Claims (6)
- A roll mill, particularly a flocculating roll mill, for granular material, having at least two rolls (1, 2) which are held or pressed against each other via a pressure device, having a product feed via which the material can be fed out on both sides over the axial ends of the rolls, and having product guides situated on both sides of the axial ends of the rolls and at least partially covering the region between the rolls and which are constructed as return lines (6) into the roll gap (3) for the material supplied axially over the ends of the rolls (1, 2), characterised in that at least one cleaning device (8) for cleaning the return line (6) is provided inside at least one of the return lines (6).
- A roll mill according to claim 1, characterised in that the cleaning device of each return line (6) has at least one blast tube (8).
- A roll mill according to claim 2, characterised in that a pump (10), a fan or the like are provided with a switch (11) and optionally a multi-way valve (12), and thata) the pump (10) is directly connected, optionally via the valve (12), to the blast tubes (8), and a continuous cleaning gas stream is thus produced, or thatb) the pump (10) is connected, optionally via the valve (12), to a gas impact device (15-28), and the latter is connected to the blast tubes (8) so that an intermittent cleaning gas stream is fed to the blast tubes (8).
- A roll mill according to claim 3, characterised in that the gas impact device (15-28) comprises:- an accummulator (15);- an outlet tube (17), one end of which is situated in the accumulator (15) and the other end of which is closed and from which a connecting line (19) leads to the blast tubes (8);- a device (22) forming a reference pressure; and- a valve clement (20), which can move from a closed position into an open position, having two opposite faces, one of which is exposed to the pressure of the accumulator (15) and the other of which is exposed to the reference pressure, wherein the valve element (20) closes the outlet from the accumulator (15) and exposes it in its open position.
- A roll mill according to claim 4, characterised in that at least one of the following features is provided:a) the face of the valve element (20) which is exposed to the reference pressure is larger than that which is exposed to the pressure of the accumulator;b) the valve element comprises a diaphragm (20), which in the closed position preferably covers the inner end of the outlet tube (17) and in particular projects beyond it so that the projecting surface is exposed to the pressure of the accumulator;c) the reference device comprises a reference pressure space (22), to which pressure call be fed periodically via a contact pressure opening (23) and can be discharged via a throttle cross-section (31);d) a return line (27) with a non-return valve (28) is provided, which leads from tile inside (18) of the outlet tube (17) to the contact pressure opening (23);e) a return line (24) with a throttle valve (26) and a non-return valve (25) is provided, which is connected to the pump (10) supplying the accumulator (15) and which has its throttle valve (26) in parallel with the accumulator (15) between the pump (10) and the contact pressure opening (23).
- A roll mill according to any one of claims 2 to 5, characterised in that the ends of the blast tubes (8) situated in the return lines (6) are constructed as valve blocks which have at least one, but optionally a plurality, of nozzle openings pointing in different directions.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4114081A DE4114081A1 (en) | 1991-04-30 | 1991-04-30 | BLOCKING ROLLING MILL |
DE4114081 | 1991-04-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0511515A1 EP0511515A1 (en) | 1992-11-04 |
EP0511515B1 true EP0511515B1 (en) | 1995-03-01 |
Family
ID=6430661
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92105749A Expired - Lifetime EP0511515B1 (en) | 1991-04-30 | 1992-04-03 | Floculation roller crusher |
Country Status (7)
Country | Link |
---|---|
US (1) | US5246176A (en) |
EP (1) | EP0511515B1 (en) |
AT (1) | ATE119072T1 (en) |
DE (2) | DE4114081A1 (en) |
DK (1) | DK0511515T3 (en) |
ES (1) | ES2071368T3 (en) |
GR (1) | GR3015257T3 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1026171C2 (en) * | 2004-05-11 | 2005-11-14 | Stork Titan Bv | To shape. |
US10710090B2 (en) * | 2016-04-28 | 2020-07-14 | Gerard Devloo | Canola seed sample crusher |
CN112675970B (en) * | 2020-11-30 | 2022-03-18 | 苏州太湖美药业有限公司 | Pearl powder grinds processing and smashes tip device with wet process |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3282199A (en) * | 1965-05-28 | 1966-11-01 | French Oil Mill Machinery | Flaking or crushing rolls |
GB1304006A (en) * | 1969-08-06 | 1973-01-24 | ||
US3667502A (en) * | 1970-03-19 | 1972-06-06 | Automatic Switch Co | Self-recycling actuator and valve incorporating it |
US3826280A (en) * | 1973-02-16 | 1974-07-30 | Us Army | Quick-acting, self-resetting fluid pressure release valve assembly |
NO742038L (en) * | 1973-06-08 | 1975-01-06 | Sigge Rydberg | |
US3924652A (en) * | 1973-09-18 | 1975-12-09 | Jr Carl L C Kah | Sequencing valve |
US4114515A (en) * | 1975-07-30 | 1978-09-19 | Pauliukonis Richard S | Adjustable self-reciprocating operator |
DE2615585A1 (en) * | 1976-04-09 | 1977-10-20 | Helmut Schwerdtfeger | Paste material roll gap seal - using hollow wedge shaped shields on intake forming peripheral air cushions |
SU640052A1 (en) * | 1977-08-17 | 1978-12-30 | Научно-исследовательский и проектный институт по газоочистным сооружениям, технике безопасности и охране труда в промышленности строительных материалов | Pulse generator |
DE3642974A1 (en) * | 1986-12-17 | 1988-06-30 | Buehler Ag Geb | ROLLING MILL AND METHOD FOR FEEDING GRINNED GOODS |
DE3707855A1 (en) * | 1987-03-11 | 1988-09-22 | Lonza Ag | DEVICE FOR CONTINUOUSLY MOLTING MATERIALS, IN PARTICULAR METAL OXYDES |
US5102058A (en) * | 1990-05-07 | 1992-04-07 | Ag Processing Inc., A Cooperative | Cheek plate for milling apparatus |
-
1991
- 1991-04-30 DE DE4114081A patent/DE4114081A1/en not_active Withdrawn
-
1992
- 1992-04-02 US US07/862,354 patent/US5246176A/en not_active Expired - Lifetime
- 1992-04-03 DK DK92105749.3T patent/DK0511515T3/en active
- 1992-04-03 AT AT92105749T patent/ATE119072T1/en not_active IP Right Cessation
- 1992-04-03 EP EP92105749A patent/EP0511515B1/en not_active Expired - Lifetime
- 1992-04-03 ES ES92105749T patent/ES2071368T3/en not_active Expired - Lifetime
- 1992-04-03 DE DE59201499T patent/DE59201499D1/en not_active Expired - Fee Related
-
1995
- 1995-03-02 GR GR950400311T patent/GR3015257T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
DK0511515T3 (en) | 1995-07-17 |
DE59201499D1 (en) | 1995-04-06 |
ES2071368T3 (en) | 1995-06-16 |
GR3015257T3 (en) | 1995-06-30 |
US5246176A (en) | 1993-09-21 |
DE4114081A1 (en) | 1992-11-05 |
ATE119072T1 (en) | 1995-03-15 |
EP0511515A1 (en) | 1992-11-04 |
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