EP0829301A1 - Machine having two rollers and method for pressure treatment of granular material - Google Patents
Machine having two rollers and method for pressure treatment of granular material Download PDFInfo
- Publication number
- EP0829301A1 EP0829301A1 EP97111955A EP97111955A EP0829301A1 EP 0829301 A1 EP0829301 A1 EP 0829301A1 EP 97111955 A EP97111955 A EP 97111955A EP 97111955 A EP97111955 A EP 97111955A EP 0829301 A1 EP0829301 A1 EP 0829301A1
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- Prior art keywords
- roller
- crushing
- gap
- roll machine
- sieve
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- 239000008187 granular material Substances 0.000 title claims description 16
- 238000000034 method Methods 0.000 title claims description 10
- 239000000463 material Substances 0.000 claims abstract description 19
- 230000003068 static effect Effects 0.000 claims abstract description 3
- 238000012216 screening Methods 0.000 claims description 16
- 239000013590 bulk material Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
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Classifications
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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
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
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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
- 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
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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
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/286—Feeding devices
Definitions
- the invention relates to a two-roller machine, in particular a high-pressure roller press for the pressure treatment of granular material with two rollers which rotate in opposite directions and are separated from one another by a nip, between which the granular material is drawn in and subjected to a material bed pressure comminution with a material feed chute above the roller nip.
- the invention relates to a method for pressure comminution of granular material with such a two-roll machine.
- the bulk material fed to the nip is gripped by the counter-rotating rollers and drawn into the nip by friction (friction within the bulk material and friction between bulk material and the roller surface).
- the individual particles of the drawn bulk material are mutually crushed in a material bed, ie in a material bed compressed between the two roller surfaces when high pressure is applied, so that this is referred to as material bed comminution (DE-PS 27 08 053).
- the product of this pressure treatment are crushed agglomerates Bulk goods that can then be digested with little mechanical effort.
- a correspondingly high level of friction for the formation of a high-pressure material bed comminution depends on the nature of the material to be comminuted (brittleness, grain structure, grain shape) and on the design of the roller surface.
- the maximum grain size that can still be drawn in by the rollers is limited.
- the maximum feed grain should be smaller than the roller gap. In the normal execution of the roll surfaces, the feed grain size should not exceed twice the value of the roll gap.
- EP-A-0 278 858 proposes to precede the high-pressure roller press with a crushing mill in which the entire bulk material is pre-shredded.
- a disadvantage of this process is that the entire bulk material, including particles with a sufficiently small grain size, is passed through the crushing mill, which unnecessarily increases the energy requirement of the entire process, and furthermore that the machine effort for high-pressure comminution increases with the crushing mill as an independent machine .
- a sieve device is arranged in the feed chute of the two-roller machine, in particular the high-pressure roller press, the screen overflow of which is crushed to a grain size in the crushing nip of a crushing roller, which forms this crushing gap with one of the two rollers of the two-roller machine, and is easily drawn in by the two-roller machine the two-roll machine is offered an optimal bulk material for pressure treatment.
- the two-roll machine designed in this way represents a compact unit in which a pre-screening, a partial pre-shredding and finally the desired bed pressure shredding takes place with minimal investment and operating costs. Since the screening and pre-shredding is carried out in the feed chute, no separate feed device, no separate discharge device is required for both process steps, and since these process steps take place in the feed chute which is closed to the outside, no otherwise expensive dedusting is required.
- the sieve device can consist of a vibrating sieve, a sieve trough or a static sieve grate. Which screening device is used depends on the task to be solved, which has to be solved by the screening device due to the nature of the granular material. It is important that the undersize grain has a grain size that is a maximum of only 2 to 2.5 times the roller gap. In special cases, for example with highly wear-resistant roller surfaces, should the screening device be able to produce a screen underflow whose maximum grain size is equal to or smaller than the gap width of the two-roll machine.
- the material to be screened which is separated from the other granular material by the screening device as oversize, is grasped within the material feed chute by the crushing gap between the crushing roller and one of the rollers of the two-roll machine and reduced to the grain size that corresponds to the screen gap width of the screening device and for a problem-free task on the two-roll machine is required.
- the crushing roller is driven by a separate drive to a peripheral speed which corresponds to the peripheral speed of the roller of the two-roll machine, or the drive of the crushing roller takes place by frictional engagement over the oversize particles to be comminuted, which are located in the crushing gap, with the roller of the two-roller machine ie the crushing roller then works as a drag roller and only rotates when oversize particles that are to be crushed enter the crushing gap.
- the width of the crushing roller can correspond to the width of the roller of the two-roller machine. But it can also be made much narrower, so that the width then corresponds to, for example, only a quarter of the roller width.
- the drawing figure shows the vertical section through a two-roll machine for crushing granular material.
- the schematic drawing shows a two-roller machine or high-pressure roller press 10 for pressure treatment (material bed comminution) of granular material with two counter-rotating (the drives are not shown) rollers 12, 13, which via their shafts 26, 27 and bearings 22, 23 in one Machine frame 11 are stored.
- This machine frame 11 carries above the two rollers 12, 13 a feed hopper 15 in which the granular material 17 to be shredded is fed in via an opening at the top.
- a sieve device 16 is arranged inside the feed hopper 15, through which the feed material 17 is sieved and separated into the sieve overflow 18 and the sieve underflow 25. While the screen underflow 25 falls directly down into the nip 20 of the two-roll machine, the screen overflow 18 slips over the screening device 16 and over a guide plate 28 into the crushing gap 19, which is formed by the roller 13 and the crushing roller 14, and is there on the desired grain size - it corresponds to the mesh size - crushed.
- the crushing roller 14 with its bearing 24 and its shaft 29 is also mounted in the machine frame 11 in such a way that it can be moved obliquely upwards or downwards in order to be able to adapt and change the crushing gap 19 to the respective requirements.
- the bearing 24 is dimensioned accordingly for the small bearing forces required and the drive of the crushing roller is also designed to be small, if not, as is proposed in an advantageous embodiment of the invention, the crushing roller 14 is driven as a drag roller by the roller 13.
- the screen overflow 18 comminuted in the crushing gap 19 now also falls into the nip 20 of the two-roll machine 10, where the comminuted material, together with the screened underflow 25, is subjected to high pressure, i.e. is subjected to material bed comminution and discharged in the form of agglomerates 21 from the nip 20 below.
- the example shown represents only one possible embodiment of the feed chute and a possible arrangement of the machine parts arranged in the feed chute, screening device and crushing roller, which can however be changed accordingly depending on the material properties and the requirements for the screening and crushing process.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
Description
Die Erfindung betrifft eine Zweiwalzenmaschine, insbesondere eine Hochdruckwalzenpresse zur Druckbehandlung körnigen Gutes mit zwei gegenläufig rotierbaren und durch einen Walzenspalt voneinander getrennten Walzen, zwischen die das körnige Gut eingezogen und einer Gutbettdruckzerkleinerung unterworfen wird mit einem Gutaufgabeschacht oberhalb des Walzenspaltes.The invention relates to a two-roller machine, in particular a high-pressure roller press for the pressure treatment of granular material with two rollers which rotate in opposite directions and are separated from one another by a nip, between which the granular material is drawn in and subjected to a material bed pressure comminution with a material feed chute above the roller nip.
Weiterhin betrifft die Erfindung ein Verfahren zur Druckzerkleinerung körnigen Gutes mit einer solchen Zweiwalzenmaschine.Furthermore, the invention relates to a method for pressure comminution of granular material with such a two-roll machine.
Beim Betrieb der Hochdruckwalzenpresse zum Verdichten bzw. zur Druckzerkleinerung körnigen Gutes wird das dem Walzenspalt zugeführte Schüttgut von den gegenläufig rotierenden Walzen erfaßt und durch Reibung (Reibung innerhalb des Schüttgutes und Reibung zwischen Schüttgut und der Walzenoberfläche) in den Walzenspalt eingezogen. Dabei werden die einzelnen Partikel des eingezogenen Schüttgutes in einem Gutbett, d.h. in einer zwischen den beiden Walzenoberflächen zusammengedrückten Materialschüttung bei Anwendung hohen Drucks gegenseitig zerdrückt, so daß man hierbei von der Gutbettzerkleinerung spricht (DE-PS 27 08 053). Das Produkt dieser Druckbehandlung sind Agglomerate aus zerkleinertem Schüttgut, die sich anschließend mit geringem mechanischen Aufwand aufschließen lassen.When operating the high-pressure roller press for compacting or crushing granular material, the bulk material fed to the nip is gripped by the counter-rotating rollers and drawn into the nip by friction (friction within the bulk material and friction between bulk material and the roller surface). The individual particles of the drawn bulk material are mutually crushed in a material bed, ie in a material bed compressed between the two roller surfaces when high pressure is applied, so that this is referred to as material bed comminution (DE-PS 27 08 053). The product of this pressure treatment are crushed agglomerates Bulk goods that can then be digested with little mechanical effort.
Eine entsprechend hohe Reibung für das Zustandekommen einer Hochdruckgutbettzerkleinerung ist von der Beschaffenheit des zu zerkleinernden Materials (Sprödigkeit, Kornaufbau, Kornform) und von der Ausführung der Walzenoberfläche abhängig. Insbesondere ist die maximale Korngröße, die von den Walzen noch eingezogen werden kann, begrenzt. So sollte bei hochverschleißfest ausgeführten Walzenoberflächen das maximale Aufgabekorn kleiner als der Walzenspalt sein. Bei normaler Ausführung der Walzenoberflächen sollte die Aufgabekorngröße den zweifachen Wert des Walzenspaltes nicht überschreiten.A correspondingly high level of friction for the formation of a high-pressure material bed comminution depends on the nature of the material to be comminuted (brittleness, grain structure, grain shape) and on the design of the roller surface. In particular, the maximum grain size that can still be drawn in by the rollers is limited. In the case of highly wear-resistant roller surfaces, the maximum feed grain should be smaller than the roller gap. In the normal execution of the roll surfaces, the feed grain size should not exceed twice the value of the roll gap.
Um diese Forderung zu erfüllen, wird in der EP-A- 0 278 858 vorgeschlagen, der Hochdruckwalzenpresse ein Brechwalzwerk vorzuschalten, in dem das gesamte Schüttgut vorzerkleinert wird. Nachteilig bei diesem Verfahren ist, daß das gesamte Schüttgut, also auch Partikel mit genügend kleiner Korngröße durch das Brechwalzwerk geführt wird, wodurch der Energiebedarf des gesamten Verfahrens unnötig vergrößert wird und weiter, daß mit dem Brechwalzwerk als eigenständige Maschine der maschinelle Aufwand für die Hochdruckzerkleinerung zunimmt.To meet this requirement, EP-A-0 278 858 proposes to precede the high-pressure roller press with a crushing mill in which the entire bulk material is pre-shredded. A disadvantage of this process is that the entire bulk material, including particles with a sufficiently small grain size, is passed through the crushing mill, which unnecessarily increases the energy requirement of the entire process, and furthermore that the machine effort for high-pressure comminution increases with the crushing mill as an independent machine .
Es ist Aufgabe der Erfindung, bei der Druckzerkleinerung körnigen Gutes im Walzenspalt einer Walzenmaschine insbesondere Zweiwalzenpresse sicherzustellen, daß dem Walzenspalt stets nur ein Schüttgut zugeführt wird, das frei von unerwünscht großen Einzelpartikeln ist.It is an object of the invention to ensure in the crushing of granular material in the nip of a roller machine, in particular a two-roller press, that only one bulk material is fed to the nip which is free of undesirably large individual particles.
Die gestellte Aufgabe wird anlagenmäßig mit den Merkmalen des Kennzeichnungsteils des Anspruchs 1 und verfahrensmäßig mit den Maßnahmen des Kennzeichnungsteils des Anspruchs 9 gelöst.The object is achieved in terms of the system with the features of the characterizing part of claim 1 and procedurally with the measures of the characterizing part of claim 9.
Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments of the invention are specified in the subclaims.
Durch die Maßnahme der Erfindung, im Gutaufgabeschacht der Zweiwalzenmaschine, inbesondere der Hochdruckwalzenpresse, eine Siebvorrichtung anzuordnen, deren Siebüberlauf im Brechspalt einer Brechwalze, die diesen Brechspalt mit einer der beiden Walzen der Zweiwalzenmaschine bildet, auf eine Korngröße zerkleinert wird, die problemlos von der Zweiwalzenmaschine eingezogen werden kann, wird der Zweiwalzenmaschine ein für die Druckbehandlung optimales Schüttgut angeboten.As a result of the measure of the invention, a sieve device is arranged in the feed chute of the two-roller machine, in particular the high-pressure roller press, the screen overflow of which is crushed to a grain size in the crushing nip of a crushing roller, which forms this crushing gap with one of the two rollers of the two-roller machine, and is easily drawn in by the two-roller machine the two-roll machine is offered an optimal bulk material for pressure treatment.
Die auf diese erfindungsgemäße Weise gestaltete Zweiwalzenmaschine stellt eine kompakte Einheit dar, in der mit minimalen Investitions- und Betriebskosten eine Vorabsiebung, eine partielle Vorzerkleinerung und schließlich die gewünschte Gutbettdruckzerkleinerung erfolgt. Da die Absiebung und die Vorzerkleinerung im Gutaufgabeschacht durchgeführt wird, ist für beide Verfahrensschritte keine separate Aufgabevorrichtung, keine separate Austragsvorrichtung sowie, da sich diese Verfahrensschritte im nach außen geschlossenen Gutaufgabeschacht abspielen, keine sonst aufwendige Entstaubung erforderlich.The two-roll machine designed in this way according to the invention represents a compact unit in which a pre-screening, a partial pre-shredding and finally the desired bed pressure shredding takes place with minimal investment and operating costs. Since the screening and pre-shredding is carried out in the feed chute, no separate feed device, no separate discharge device is required for both process steps, and since these process steps take place in the feed chute which is closed to the outside, no otherwise expensive dedusting is required.
Gemäß der Erfindung kann die Siebvorrichtung aus einem Vibrationssieb, einer Siebrinne oder einem statischen Siebrost bestehen. Welche Siebvorrichtung zur Anwendung gelangt, ist von der zu lösenden Aufgabe, die aufgrund der Beschaffenheit des körnigen Gutes von der Siebvorrichtung zu lösen ist, abhängig. Wichtig ist, daß das Siebunterkorn eine Korngröße aufweist, die maximal nur das 2- bis 2,5-fache des Walzenspaltes beträgt. In speziellen Fällen, beispielsweise bei hochverschleißfest ausgeführten Walzenoberflächen, sollte die Siebvorrichtung in der Lage sein, einen Siebunterlauf zu erzeugen, dessen maximale Korngröße gleich groß oder kleiner als die Spaltweite der Zweiwalzenmaschine ist.According to the invention, the sieve device can consist of a vibrating sieve, a sieve trough or a static sieve grate. Which screening device is used depends on the task to be solved, which has to be solved by the screening device due to the nature of the granular material. It is important that the undersize grain has a grain size that is a maximum of only 2 to 2.5 times the roller gap. In special cases, for example with highly wear-resistant roller surfaces, should the screening device be able to produce a screen underflow whose maximum grain size is equal to or smaller than the gap width of the two-roll machine.
Das Siebgut, das von der Siebvorrichtung als Überkorn vom übrigen körnigen Gut abgetrennt wird, wird innerhalb des Gutaufgabeschachtes vom Brechspalt zwischen der Brechwalze und einer der Walzen der Zweiwalzenmaschine erfaßt und auf die Korngröße zerkleinert, die der Siebspaltweite der Siebvorrichtung entspricht und die für eine problemlose Aufgabe auf die Zweiwalzenmaschine erforderlich ist.The material to be screened, which is separated from the other granular material by the screening device as oversize, is grasped within the material feed chute by the crushing gap between the crushing roller and one of the rollers of the two-roll machine and reduced to the grain size that corresponds to the screen gap width of the screening device and for a problem-free task on the two-roll machine is required.
Zu diesem Zweck wird die Brechwalze durch einen separaten Antrieb auf eine Umfangsgeschwindigkeit angetrieben, die der Umfangsgeschwindigkeit der Walze der Zweiwalzenmaschine entspricht oder aber der Antrieb der Brechwalze erfolgt durch Kraftschluß über die zu zerkleinernden Überkörner, die sich im Brechspalt befinden, mit der Walze der Zweiwalzenmaschine, d.h. die Brechwalze arbeitet dann als Schleppwalze und dreht sich nur dann, wenn zu zerkleinerndes Überkorn in den Brechspalt gelangt.For this purpose, the crushing roller is driven by a separate drive to a peripheral speed which corresponds to the peripheral speed of the roller of the two-roll machine, or the drive of the crushing roller takes place by frictional engagement over the oversize particles to be comminuted, which are located in the crushing gap, with the roller of the two-roller machine ie the crushing roller then works as a drag roller and only rotates when oversize particles that are to be crushed enter the crushing gap.
Je nach der Menge des zu zerkleinernden Überkorns kann die Breite der Brechwalze der Breite der Walze der Zweiwalzenmaschine entsprechen. Sie kann aber auch wesentlich schmäler ausgeführt sein, so daß die Breite dann beispielsweise nur einem Viertel der Walzenbreite entspricht.Depending on the amount of oversize to be crushed, the width of the crushing roller can correspond to the width of the roller of the two-roller machine. But it can also be made much narrower, so that the width then corresponds to, for example, only a quarter of the roller width.
Weitere Einzelheiten, Vorteile und Merkmale der Erfindung ergeben sich aus den nachfolgenden Erläuterungen zu einem in einer Zeichnungsfigur dargestellten Ausführungsbeispiel.Further details, advantages and features of the invention result from the following explanations of an embodiment shown in a drawing figure.
Die Zeichnungsfigur zeigt den vertikalen Schnitt durch eine Zweiwalzenmaschine zur Druckzerkleinerung körnigen Gutes.The drawing figure shows the vertical section through a two-roll machine for crushing granular material.
Die schematische Zeichnungsfigur zeigt eine Zweiwalzenmaschine bzw. Hochdruck-Walzenpresse 10 zur Druckbehandlung (Gutbettzerkleinerung) von körnigem Gut mit zwei gegenläufig rotierbaren (die Antriebe sind nicht eingezeichnet) Walzen 12, 13, die über ihre Wellen 26, 27 und Lager 22, 23 in einem Maschinenrahmen 11 gelagert sind. Dieser Maschinenrahmen 11 trägt oberhalb der beiden Walzen 12, 13 einen Gutaufgabeschacht 15, in dem oben über eine Öffnung das zu zerkleinernde körnige Gut 17 aufgegeben wird.The schematic drawing shows a two-roller machine or high-
Innerhalb des Gutaufgabeschachtes 15 ist eine Siebvorrichtung 16 angeordnet, durch die das Aufgabegut 17 abgesiebt und in den Siebüberlauf 18 und in den Siebunterlauf 25 aufgetrennt wird. Während der Siebunterlauf 25 direkt nach unten in den Walzenspalt 20 der Zweiwalzenmaschine fällt, rutscht der Siebüberlauf 18 über die Siebvorrichtung 16 und über ein Leitblech 28 in den Brechspalt 19, der von der Walze 13 und der Brechwalze 14 gebildet wird, und wird dort auf die gewünschte Korngröße - sie entspricht der Siebmaschenweite - zerkleinert.A
Die Brechwalze 14 mit ihrem Lager 24 und ihrer Welle 29 ist gleichfalls im Maschinenrahmen 11 gelagert und zwar so, daß sie schräg nach oben oder schräg nach unten verschoben werden kann, um auf diese Weise den Brechspalt 19 den jeweiligen Erfordernissen anpassen und verändern zu können.The crushing
Da der Brechvorgang selbst keine Hochdruck- bzw. Gutbettzerkleinerung ist, ist das Lager 24 für die erforderlichen kleinen Lagerkräfte entsprechend dimensioniert und auch der Antrieb der Brechwalze ist entsprechend klein ausgelegt, wenn nicht, wie in einer vorteilhaften Ausgestaltung der Erfindung vorgeschlagen wird, die Brechwalze 14 als Schleppwalze durch die Walze 13 angetrieben wird.Since the crushing process itself is not a high-pressure or material bed comminution, the
Der im Brechspalt 19 zerkleinerte Siebüberlauf 18 fällt nun ebenfalls in den Walzenspalt 20 der Zweiwalzenmaschine 10, wo das zerkleinerte Gut nun gemeinsam mit dem abgesiebten Siebunterlauf 25 einer Hochdruckbeanspruchung, d.h. einer Gutbettzerkleinerung unterworfen wird und in Form von Agglomeraten 21 unten aus dem Walzenspalt 20 ausgetragen wird.The
Das dargestellte Beispiel stellt nur eine mögliche Ausführungsform des Gutaufgabeschachtes und eine mögliche Anordnung der im Gutaufgabeschacht angeordneten Maschinenteile Siebvorrichtung und Brechwalze dar, die aber je nach Materialeigenschaften und Anforderung an den Sieb- und Brechvorgang entsprechend verändert werden kann.The example shown represents only one possible embodiment of the feed chute and a possible arrangement of the machine parts arranged in the feed chute, screening device and crushing roller, which can however be changed accordingly depending on the material properties and the requirements for the screening and crushing process.
Claims (10)
gekennzeichnet durch
marked by
dadurch gekennzeichnet, daß die Siebvorrichtung (16) ein Vibrationssieb ist.Two-roll machine (10) according to claim 1,
characterized in that the screening device (16) is a vibrating screen.
dadurch gekennzeichnet, daß die Siebvorrichtung (16) eine Siebrinne ist.Two-roll machine (10) according to claim 1,
characterized in that the sieve device (16) is a sieve trough.
dadurch gekennzeichnet, daß die Siebvorrichtung (16) ein statischer Siebrost ist.Two-roll machine (10) according to claim 1,
characterized in that the screening device (16) is a static screening grid.
dadurch gekennzeichnet, daß die Breite der Brechwalze (14) der Breite der Walze (13) entspricht.Two-roll machine (10) according to claim 1, 2, 3 or 4,
characterized in that the width of the crushing roller (14) corresponds to the width of the roller (13).
dadurch gekennzeichnet, daß die Breite der Brechwalze (14) kleiner als die Breite der Walze (13) ist.Two-roll machine (10) according to claim 1, 2, 3 or 4,
characterized in that the width of the crushing roller (14) is smaller than the width of the roller (13).
dadurch gekennzeichnet, daß der Antrieb der Brechwalze (14) über im Brechspalt (19) befindliches Siebüberlaufkorn (18), das einen Kraftschluß herstellt, durch die Walze (13) erfolgt.Two-roll machine (10) according to one or more of claims 1 to 6,
characterized in that the crushing roller (14) is driven by the roller (13) via sieve overflow grain (18) located in the crushing gap (19), which produces a frictional connection.
dadurch gekennzeichnet, daß die Brechwalze (14) einen separaten Antrieb aufweist.Two-roll machine (10) according to one or more of claims 1 to 6,
characterized in that the crushing roller (14) has a separate drive.
dadurch gekennzeichnet, daß das körnige Gut (17) im Gutaufgabeschacht (15) der Zweiwalzenmaschine (10) abgesiebt wird, daß das Überkorn (18) der Absiebung im Brechspalt (19), der von der Brechwalze (14) und der Walze (13) gebildet wird, zerkleinert und das zerkleinerte Überkorn (18) und das Unterkorn (25) der Absiebung gemeinsam im Walzenspalt (20) der Zweiwalzenmaschine einer Druckbehandlung unterworfen wird.Method for pressure treatment of granular material in the nip (20) of a two-roll machine (10) according to one or more of the preceding claims,
characterized in that the granular material (17) is screened in the material feed shaft (15) of the two-roll machine (10), that the oversize (18) of the screening in the crushing gap (19), that of the crushing roller (14) and the roller (13) is formed, crushed and the crushed oversize (18) and the undersize (25) of the screening together in the nip (20) of the two-roll machine is subjected to a pressure treatment.
dadurch gekennzeichnet, daß das Überkorn (18) durch Einstellung der Breite des Brechspaltes (19) auf eine Korngröße von kleiner 1-fach, z.B. 0,8-fach, bis zum 2,5-fachen des Walzenspaltes (20) durch die Brechwalze (14) vorzerkleinert wird.Method according to claim 9,
characterized in that the oversize (18) by adjusting the width of the crushing gap (19) to a grain size of less than 1 times, for example 0.8 times, up to 2.5 times the roll gap (20) by the crushing roller ( 14) is pre-crushed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19632976A DE19632976A1 (en) | 1996-08-16 | 1996-08-16 | Two-roll machine and process for pressure treatment of granular goods |
| DE19632976 | 1996-08-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0829301A1 true EP0829301A1 (en) | 1998-03-18 |
| EP0829301B1 EP0829301B1 (en) | 2001-05-30 |
Family
ID=7802756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97111955A Expired - Lifetime EP0829301B1 (en) | 1996-08-16 | 1997-07-12 | Machine having two rollers and method for pressure treatment of granular material |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5876648A (en) |
| EP (1) | EP0829301B1 (en) |
| DE (2) | DE19632976A1 (en) |
| DK (1) | DK0829301T3 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0901828A1 (en) * | 1997-09-02 | 1999-03-17 | KHD Humboldt-Wedag AG | Method and plant for closed circuit grinding of friable material |
| EP2689852A3 (en) * | 2012-07-24 | 2015-09-02 | Golfetto Sangati S.r.l. | Machine for grinding granular products with vibratory feeding of the product |
| CN110605158A (en) * | 2019-09-20 | 2019-12-24 | 张家港南光包装容器再生利用有限公司 | Crushing machine |
| CN113801702A (en) * | 2021-10-20 | 2021-12-17 | 西南石油大学 | Organic domestic garbage hydrogen production device |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3743599B2 (en) | 1998-05-15 | 2006-02-08 | 株式会社サタケ | Milling method and milling system using the milling method |
| US7913939B2 (en) * | 2005-04-29 | 2011-03-29 | GTL Energy, Ltd. | Method to transform bulk material |
| WO2008112893A1 (en) * | 2007-03-13 | 2008-09-18 | Gtl Energy Ltd | Method to improve the efficiency of removal of liquid water from solid bulk fuel materials |
| NZ594100A (en) * | 2007-08-01 | 2013-01-25 | Gtl Energy Ltd | A coal based water resiatant solid carbonaceous fuel of density 500-750 Kg/m^3 |
| RU2498854C2 (en) * | 2008-07-02 | 2013-11-20 | Бюлер Аг | Method of flour production from grain, roll mill, application of roll mill, zigzag sieving machine and its application |
| US8439288B2 (en) | 2008-07-09 | 2013-05-14 | Khd Humboldt Wedag Gmbh | Feed device with two rotary valves which are variable independently of each other |
| US9494260B2 (en) | 2012-04-13 | 2016-11-15 | Ticona Llc | Dynamically vulcanized polyarylene sulfide composition |
| RU2680580C1 (en) * | 2018-04-05 | 2019-02-22 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") | Two-roller mill |
| RU2714245C1 (en) * | 2019-05-13 | 2020-02-13 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Кубанский государственный технологический университет" (ФГБОУ ВО "КубГТУ") | Twin-roll mill |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1796963U (en) * | 1958-05-24 | 1959-10-01 | Esch Werke Kg | ROLLER CRUSHER FOR THE PRODUCTION OF CRASHED MATERIAL WITH A LOW FINE GRAIN CONTENT. |
| GB2016952A (en) * | 1978-03-06 | 1979-10-03 | Peters Ag Claudius | Roller mills |
| EP0278858A2 (en) * | 1987-02-10 | 1988-08-17 | Technip | Method for milling mineral material and arrangement for carrying out this method |
| DE3823929A1 (en) * | 1987-08-11 | 1989-02-23 | Smidth & Co As F L | Method and apparatus for roll-crushing and -grinding or for mineral substances |
| EP0399192A1 (en) * | 1989-05-22 | 1990-11-28 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Roller mill, especially for pressure milling of granular material |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE640609C (en) * | 1937-01-08 | Stille Fa F | Dirt separator for mill feeders | |
| US147665A (en) * | 1874-02-17 | Improvement in apparatus for mixing and molding artificial fuel | ||
| US2615404A (en) * | 1943-10-29 | 1952-10-28 | T & T Vicars Ltd | Dough molding and dough sheeting material |
| US2729855A (en) * | 1952-10-16 | 1956-01-10 | Kaiser Aluminium Chem Corp | Methods for making shaped articles |
| US2922189A (en) * | 1957-03-05 | 1960-01-26 | Int Nickel Co | Apparatus for the production of metal strip from metal powder |
| US3242530A (en) * | 1964-05-29 | 1966-03-29 | Gen Electric | Rolling mill |
| US3553775A (en) * | 1967-09-23 | 1971-01-12 | Kloeckner Humboldt Deutz Ag | Roll press |
| US3674397A (en) * | 1970-12-07 | 1972-07-04 | Kg Ind Inc | Material compacting apparatus |
| US3838958A (en) * | 1972-10-30 | 1974-10-01 | Mallory & Co Inc P R | Multi layer capacitor and apparatus for making same with screen vibrating means |
| US3998396A (en) * | 1973-12-17 | 1976-12-21 | Continental Oil Company | Scalping apparatus for a low profile two-roll crusher |
| DE2708053C3 (en) * | 1977-02-24 | 1986-05-07 | Schönert, Klaus, Prof. Dr.-Ing., 7500 Karlsruhe | Process for fine and ultra-fine comminution of materials with brittle behavior |
| DE3138259A1 (en) * | 1981-09-25 | 1983-04-14 | Eisenegger, Edwin, 9242 Oberuzwil | Impact grinding method and system |
| US4436682A (en) * | 1980-12-15 | 1984-03-13 | Revere Copper And Brass, Inc. | Roll compacting of polymer powders into fully dense products |
| US5462425A (en) * | 1994-07-11 | 1995-10-31 | Kuss; Thomas | Apparatus for demoisturizing coal |
-
1996
- 1996-08-16 DE DE19632976A patent/DE19632976A1/en not_active Withdrawn
-
1997
- 1997-07-12 DE DE59703657T patent/DE59703657D1/en not_active Expired - Fee Related
- 1997-07-12 DK DK97111955T patent/DK0829301T3/en active
- 1997-07-12 EP EP97111955A patent/EP0829301B1/en not_active Expired - Lifetime
- 1997-08-14 US US08/911,523 patent/US5876648A/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1796963U (en) * | 1958-05-24 | 1959-10-01 | Esch Werke Kg | ROLLER CRUSHER FOR THE PRODUCTION OF CRASHED MATERIAL WITH A LOW FINE GRAIN CONTENT. |
| GB2016952A (en) * | 1978-03-06 | 1979-10-03 | Peters Ag Claudius | Roller mills |
| EP0278858A2 (en) * | 1987-02-10 | 1988-08-17 | Technip | Method for milling mineral material and arrangement for carrying out this method |
| DE3823929A1 (en) * | 1987-08-11 | 1989-02-23 | Smidth & Co As F L | Method and apparatus for roll-crushing and -grinding or for mineral substances |
| EP0399192A1 (en) * | 1989-05-22 | 1990-11-28 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Roller mill, especially for pressure milling of granular material |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0901828A1 (en) * | 1997-09-02 | 1999-03-17 | KHD Humboldt-Wedag AG | Method and plant for closed circuit grinding of friable material |
| EP2689852A3 (en) * | 2012-07-24 | 2015-09-02 | Golfetto Sangati S.r.l. | Machine for grinding granular products with vibratory feeding of the product |
| CN110605158A (en) * | 2019-09-20 | 2019-12-24 | 张家港南光包装容器再生利用有限公司 | Crushing machine |
| CN113801702A (en) * | 2021-10-20 | 2021-12-17 | 西南石油大学 | Organic domestic garbage hydrogen production device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0829301B1 (en) | 2001-05-30 |
| DK0829301T3 (en) | 2001-08-06 |
| DE59703657D1 (en) | 2001-07-05 |
| US5876648A (en) | 1999-03-02 |
| DE19632976A1 (en) | 1998-02-19 |
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