EP2498911B1 - Grinding roller of a roller mill - Google Patents
Grinding roller of a roller mill Download PDFInfo
- Publication number
- EP2498911B1 EP2498911B1 EP11790945.7A EP11790945A EP2498911B1 EP 2498911 B1 EP2498911 B1 EP 2498911B1 EP 11790945 A EP11790945 A EP 11790945A EP 2498911 B1 EP2498911 B1 EP 2498911B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- grinding
- mill
- grinding roller
- shrink fit
- 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.)
- Not-in-force
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
- B02C4/305—Wear resistant rollers
-
- 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
Definitions
- the invention relates to a grinding roller of a roller mill with a roller shaft, a roller body and an outer wear protection wear ring.
- the invention relates to a roller mill for crushing the brittle material to be ground with two counter-rotating grinding rollers.
- a roller for processing iron or steel into thin plates or strips according to the preamble of claim 1 is known. It consists of a roll shaft with shrunk roll body, wherein the roll body has a heat treated hardened surface.
- the DE 38 43 173 C2 As a wear-resistant surface armor for rolls of rolling machines, it provides a plurality of metallic layers of different materials or hardnesses welded onto a roll main body.
- a grinding roll for a roll press which has a roll base body applied to a stepped and integrally formed shaft 3 and a one-piece or split-ring wear ring attached thereto.
- the invention is therefore based on the object of reducing the operating costs of a grinding roller or roller mill by prolonged use of the roller body.
- the grinding roller of a roller mill consists essentially of a roller shaft, a roller base body and an outer, a wear protection wear ring, wherein the connection between the roller shaft and roller body is formed by shrink fit.
- the roller base body is formed by at least 3 or 4 coaxially arranged intermediate rings.
- roller body Due to the subdivision of the roller body in at least 3 or 4 coaxially arranged intermediate rings, it is sufficient if only the outermost intermediate ring is replaced after repeated processing, while previously the entire roller body was replaced. Due to this design, the operating costs of a roller mill can be reduced by up to 10% depending on the number of intermediate rings.
- the basic cylinder body or the intermediate rings are cast steel or forgings whose radial strength is limited in terms of manufacturing technology.
- the grinding roller according to the invention has the further advantage that the overall diameter of the roller body can be significantly increased by a correspondingly increased number of intermediate rings. Therefore, grinding rolls having large diameters of at least 3 m, preferably at least 3.5 m and more, can be easily produced.
- connections between the intermediate rings and between the outer intermediate ring and the wear ring are preferably also formed by shrink fit, with either a conical or a cylindrical shrink fit can be used.
- the cylindrical shrink fit will be chosen especially in later connections no longer to be solved, while the conical shrink fit can be solved easily.
- a conical shrink fit is particularly advantageous for the connection of the outermost intermediate ring with the wear ring and with the next inner intermediate ring.
- the grinding roller may have a diameter of at least 4.5 m and a width of at least 2.5 m.
- the wear protection can also be formed by protruding from the surface of the wear ring profile bodies and / or hard surfacing.
- the grinding rolls described above are used in a roll mill for the comminution of brittle material to be ground, in which two counter-rotating grinding rolls are provided. This can happen in particular to act a high-pressure roller mill, in which there is provided with at least one grinding roller in operative connection force application system for generating a grinding pressure of at least 50 MPa.
- roller mill shown for crushing brittle grinding material essentially comprises grinding rollers 1, 2, the roller shafts 3, 4 are mounted in bearings 5, 6 and 7, 8.
- the bearings 5 to 8 are preferably plain bearings.
- an adjustable grinding gap 9 is maintained and the required grinding pressure of, for example, at least 50 MPa is generated by a Kraftbeaufyerungssystem 10. Both grinding rollers 1, 2 are driven in opposite directions via coupled to the roller shafts 3, 4 drives 11, 12.
- roller mill is preferably a high-pressure roller press
- other mills are also conceivable within the scope of the invention, such as, for example, a vertical roller mill, in which the grinding rollers described in more detail below could also be used.
- both grinding rollers 1, 2 are constructed identically, will be described below with reference to the Fig. 2 and 3 two embodiments described in more detail only with reference to the grinding roller 1.
- the roller base 13 is formed in the illustrated embodiment by 3 coaxially arranged intermediate rings 13a, 13b and 13c, the intermediate rings 13a to 13c forming the roller base 1 of the roller body can be made of different materials. So it is conceivable that only the outer intermediate ring 13c from the usual, relatively expensive bearing steel, e.g. 18NiCrMo14-6 is manufactured, while for the other intermediate rings 13a and 13b a sufficiently strong structural steel, for example S355J2G3 is used. Through this possibility, the procurement situation for the material of the roll body is noticeably relaxed. In addition, the mild steel compared to the bearing steel is excellentgüstiger.
- Fig. 2 are the connections between the intermediate ring 13a and shaft 3 and between the intermediate rings and the connection between the outer intermediate ring 13c and the wear ring 14 carried out by means of cylindrical shrink fit.
- connection between the two intermediate rings 13'c and 13'b and between the wear ring 14 'and the intermediate ring 13'c are provided by means of conical shrink fit.
- the conical Shrink fit allows for easier release of the connection, if this should be required later in the treatment.
- the grinding roller according to the invention can initially be processed several times only by processing the wear ring. Once the wear ring allows no further treatment and the roll body is attacked, only the outermost intermediate ring must be replaced 13c and 13'c of the roll body. The remaining roll body can therefore remain in use. Of course, it is also possible to convert a large grinding roller instead of removing the worn outer intermediate ring in a correspondingly smaller grinding roller. The operating costs of a grinding roller can be significantly reduced in this way.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Rolls And Other Rotary Bodies (AREA)
Description
Die Erfindung betrifft eine Mahlwalze einer Walzenmühle mit einer Walzenwelle, einem Walzengrundkörper und einem äußeren, einen Verschleißschutz aufweisenden Verschleißring. Außerdem bezieht sich die Erfindung auf eine Walzenmühle zur Zerkleinerung vom sprödem Mahlgut mit zwei gegensinnig antreibbaren Mahlwalzen.The invention relates to a grinding roller of a roller mill with a roller shaft, a roller body and an outer wear protection wear ring. In addition, the invention relates to a roller mill for crushing the brittle material to be ground with two counter-rotating grinding rollers.
Aus der
Die
Aus der
Weiterhin ist aus der
Bei Rollenmühlen oder Walzenpressen können sehr hohen Mahldrücke von bis zu 50 MPa und mehr zur Anwendung kommen. Bei der Zerkleinerung von sprödem Material, wie beispielsweise Kalkstein, kommt es dabei während des Betriebes zu einem Verschleiß des äußeren Verschleißringes. Es ist daher üblich, verschlissene Mahlwalzen mehrmals aufzubereiten, indem der Verschleißring abgedreht wird und beispielsweise durch Auftragsschweißung mit einem neuen Verschleißschutz versehen wird. Bei einer mehrmalig wiederaufbereiteten Mahlwalze mit einem Durchmesser von 240 cm und einer Breite von 170 cm müssen dennoch etwa 40 t Material verschrottet werden.In roller mills or roller presses very high grinding pressures of up to 50 MPa and more can be used. In the crushing of brittle material, such as limestone, it comes during operation to a wear of the outer wear ring. It is therefore common to recycle worn grinding rolls several times by the wear ring is turned off and, for example, by build-up welding with a new wear protection is provided. Nevertheless, in the case of a refurbished grinding roller having a diameter of 240 cm and a width of 170 cm, about 40 t of material still needs to be scrapped.
Außerdem ist es bekannt, den Verschleißschutz durch aus der Oberfläche des Verschleißringes herausragenden Profilkörpern zu bilden, die nach Abnutzung ebenfalls ersetzt werden können.Moreover, it is known to form the wear protection by protruding from the surface of the wear ring profile bodies, which can also be replaced after wear.
Nach üblicherweise etwa 2 bis 4 Aufbereitungen ist der verbleibende Walzengrundkörper zu entsorgen, sofern er nicht für eine Mahlwalze mit einem kleineren Durchmesser verwendet werden kann.After usually about 2 to 4 treatments, discard the remaining roll body unless it can be used for a smaller diameter grinding roll.
Der Erfindung liegt daher die Aufgabe zugrunde, die Betriebskosten einer Mahlwalze bzw. Walzenmühle durch eine verlängerte Nutzung des Walzenkörpers zu senken.The invention is therefore based on the object of reducing the operating costs of a grinding roller or roller mill by prolonged use of the roller body.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruchs 1 bzw. des Anspruchs 7 gelöst.According to the invention this object is solved by the features of
Die erfindungsgemäße Mahlwalze einer Walzenmühle besteht im Wesentlichen aus einer Walzenwelle, einem Walzengrundkörper und einem äußeren, einen Verschleißschutz aufweisenden Verschleißring, wobei die Verbindung zwischen Walzenwelle und Walzengrundkörper durch Schrumpfsitz gebildet wird. Der Walzengrundkörper wird dabei durch wenigstens 3 oder 4 koaxial angeordnete Zwischenringe gebildet.The grinding roller of a roller mill according to the invention consists essentially of a roller shaft, a roller base body and an outer, a wear protection wear ring, wherein the connection between the roller shaft and roller body is formed by shrink fit. The roller base body is formed by at least 3 or 4 coaxially arranged intermediate rings.
Durch die Unterteilung des Walzengrundkörpers in wenigstens 3 oder 4 koaxial angeordnete Zwischenringe ist es ausreichend, wenn nach mehrmaligen Aufbereiten lediglich der äußerste Zwischenring ausgetauscht wird, während bisher der gesamte Walzengrundkörper auszutauschen war. Durch diese Konstruktion lassen sich die Betriebskosten einer Walzenmühle je nach Anzahl der Zwischenringe um bis zu 10% reduzieren.Due to the subdivision of the roller body in at least 3 or 4 coaxially arranged intermediate rings, it is sufficient if only the outermost intermediate ring is replaced after repeated processing, while previously the entire roller body was replaced. Due to this design, the operating costs of a roller mill can be reduced by up to 10% depending on the number of intermediate rings.
Bei dem Walzengrundkörper bzw. den Zwischenringen handelt es sich um Stahlguss-oder Schmiedeteile, deren radialen Stärke fertigungstechnisch begrenzt ist. Durch die Unterteilung in mehrere Zwischenringe hat die erfindungsgemäße Mahlwalze den weiteren Vorteil, dass der Gesamtdurchmesser des Walzengrundkörpers durch eine entsprechend erhöhte Anzahl an Zwischenringen deutlich vergrößert werden kann. Es können daher Mahlwalzen mit großen Durchmessern von wenigstens 3 m, vorzugsweise wenigstens 3,5 m und mehr problemlos hergestellt werden.The basic cylinder body or the intermediate rings are cast steel or forgings whose radial strength is limited in terms of manufacturing technology. By dividing into a plurality of intermediate rings, the grinding roller according to the invention has the further advantage that the overall diameter of the roller body can be significantly increased by a correspondingly increased number of intermediate rings. Therefore, grinding rolls having large diameters of at least 3 m, preferably at least 3.5 m and more, can be easily produced.
Weitere Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Further embodiments of the invention are the subject of the dependent claims.
Die Verbindungen zwischen den Zwischenringen und zwischen dem äußeren Zwischenring und dem Verschleißring werden vorzugsweise ebenfalls durch Schrumpfsitze gebildet, wobei wahlweise ein konischer oder ein zylindrischer Schrumpfsitz zur Anwendung kommen kann. Den zylindrischen Schrumpfsitz wird man vor allem bei später nicht mehr zu lösenden Verbindungen wählen, während der konische Schrumpfsitz problemlos gelöst werden kann. Insofern ist für die Verbindung des äußersten Zwischenringes mit dem Verschleißring und mit dem nächst innen liegenden Zwischenring ein konischer Schrumpfsitz besonders vorteilhaft.The connections between the intermediate rings and between the outer intermediate ring and the wear ring are preferably also formed by shrink fit, with either a conical or a cylindrical shrink fit can be used. The cylindrical shrink fit will be chosen especially in later connections no longer to be solved, while the conical shrink fit can be solved easily. In this respect, a conical shrink fit is particularly advantageous for the connection of the outermost intermediate ring with the wear ring and with the next inner intermediate ring.
Gemäß einer weiteren Ausgestaltung der Erfindung kann die Mahlwalze einen Durchmesser von wenigstens 4,5 m und eine Breite von wenigstens 2,5 m aufweisen. Außerdem ist es bei Mahlwalzen mit größeren Durchmessern von Vorteil, wenn wenigstens drei oder vier Zwischenringe vorgesehen werden.According to a further embodiment of the invention, the grinding roller may have a diameter of at least 4.5 m and a width of at least 2.5 m. In addition, it is advantageous in larger diameter grinding rolls when at least three or four intermediate rings are provided.
Der Verschleißschutz kann weiterhin durch aus der Oberfläche des Verschleißrings herausragenden Profilkörpern und/oder ein Hartauftragschweißung gebildet werden.The wear protection can also be formed by protruding from the surface of the wear ring profile bodies and / or hard surfacing.
Gemäß einer bevorzugten Anwendung kommen die oben beschriebenen Mahlwalzen in einer Walzenmühle zur Zerkleinerung von sprödem Mahlgut zur Anwendung, bei der zwei gegensinnig antreibbare Mahlwalzen vorgesehen sind. Hierbei kann es sich insbesondere um eine Hochdruckwalzenmühle handeln, bei welcher ein mit wenigstens einer Mahlwalze in Wirkverbindung stehendes Kraftbeaufschlagungssystem zur Erzeugung eines Mahldrucks von wenigstens 50 MPa vorgesehen ist.According to a preferred application, the grinding rolls described above are used in a roll mill for the comminution of brittle material to be ground, in which two counter-rotating grinding rolls are provided. This can happen in particular to act a high-pressure roller mill, in which there is provided with at least one grinding roller in operative connection force application system for generating a grinding pressure of at least 50 MPa.
Weitere Ausgestaltungen und Vorteile der Erfindung werden im Folgenden anhand der Beschreibung und der Zeichnung näher erläutert.Further embodiments and advantages of the invention are explained in more detail below with reference to the description and the drawing.
In der Zeichnung zeigen
- Fig. 1
- eine schematische Draufsicht einer Walzenmühle,
- Fig. 2
- eine schematische Schnittdarstellung einer Mahlwalze gemäß einem ersten Ausführungsbeispiel und
- Fig. 3
- eine schematische Schnittdarstellung einer Mahlwalze gemäß einem zweiten Ausführungsbeispiel.
- Fig. 1
- a schematic plan view of a roll mill,
- Fig. 2
- a schematic sectional view of a grinding roller according to a first embodiment and
- Fig. 3
- a schematic sectional view of a grinding roller according to a second embodiment.
Die in
Wenngleich es sich bei der dargestellten Walzenmühle vorzugsweise um eine Hochdruckwalzenpresse handelt, sind im Rahmen der Erfindung aber auch andere Mühlen denkbar, wie beispielsweise eine Vertikalrollenmühle, bei der die nachfolgend näher beschriebenen Mahlwalzen ebenfalls zum Einsatz kommen könnten.Although the illustrated roller mill is preferably a high-pressure roller press, other mills are also conceivable within the scope of the invention, such as, for example, a vertical roller mill, in which the grinding rollers described in more detail below could also be used.
Nachdem beide Mahlwalzen 1, 2 identisch aufgebaut sind, werden im Folgenden anhand der
Die Mahlwalze 1 besteht im dargestellten Ausführungsbeispiel aus der Walzenwelle 3, einem Walzengrundkörper 13 und einem äußeren, einen Verschleißschutz aufweisenden Verschleißring 14. Der Walzengrundkörper 13 wird im dargestellten Ausführungsbeispiel durch 3 koaxial angeordnete Zwischenringe 13a, 13b und 13c gebildet, wobei die Zwischenringe 13a bis 13c des Walzenkörper aus unterschiedlichem Material gefertigt werden können. So ist es denkbar, dass lediglich der äußere Zwischenring 13c aus dem üblichen, relativ teuren Wälzlagerstahl, z.B. 18NiCrMo14-6 gefertigt wird, während für die anderen Zwischenringe 13a und 13b ein ausreichend fester Baustahl, beispielsweise S355J2G3 zur Anwendung kommt. Durch diese Möglichkeit ist die Beschaffungssituation für das Material des Walzenkörpers spürbar entspannt. Darüber hinaus ist der Baustahl gegenüber dem Wälzlagerstahl kostengüstiger.In the exemplary embodiment illustrated, the
Die Verbindung der einzelnen Teile der Mahlwalze erfolgt mittels Schrumpfsitz, wobei grundsätzlich sowohl ein konische als auch ein zylindrisch ausgebildeter Schrumpfsitz denkbar ist. Konische Schrumpfsitze werden vor allem bei später noch mal zu lösenden Verbindungen bevorzugt.The connection of the individual parts of the grinding roller by means of shrink fit, in principle, both a conical and a cylindrical trained shrink fit is conceivable. Conical shrink seats are preferred especially in later to be solved again connections.
In
Im Ausführungsbeispiel gemäß
Anstelle der drei Zwischenringe können aber auch vier oder noch mehr Zwischenringe vorgesehen werden, um dadurch Mahlwalzen zu schaffen, die einen Durchmesser von 3 m, 3,5 m, 4 m, 4,5 m oder mehr aufweisen. Es besteht somit erstmals die Möglichkeit Mahlwalzen mit sehr großen Durchmessern zu fertigen, sodass Walzenmühlen mit einem entsprechend größeren Durchsatz realisiert werden können.Instead of the three intermediate rings but also four or more intermediate rings can be provided to thereby create grinding rollers having a diameter of 3 m, 3.5 m, 4 m, 4.5 m or more. Thus, for the first time it is possible to manufacture grinding rolls with very large diameters so that roll mills can be realized with a correspondingly higher throughput.
Die erfindungsgemäße Mahlwalze kann zunächst lediglich durch Bearbeitung des Verschleißringes mehrfach aufbereitet werden. Sobald der Verschleißring keine weitere Aufbereitung zulässt und auch der Walzenkörper angegriffen ist, muss lediglich der äußerste Zwischenring 13c bzw. 13'c des Walzenkörpers ersetzt werden. Der restliche Walzenkörper kann daher weiterhin im Einsatz bleiben. Selbstverständlich ist es auch möglich, eine große Mahlwalze statt durch Entfernen des verschlissenen äußeren Zwischenringes in eine entsprechend kleinere Mahlwalze überzuführen. Die Betriebskosten einer Mahlwalze können auf diese Weise erheblich reduziert werden.The grinding roller according to the invention can initially be processed several times only by processing the wear ring. Once the wear ring allows no further treatment and the roll body is attacked, only the outermost intermediate ring must be replaced 13c and 13'c of the roll body. The remaining roll body can therefore remain in use. Of course, it is also possible to convert a large grinding roller instead of removing the worn outer intermediate ring in a correspondingly smaller grinding roller. The operating costs of a grinding roller can be significantly reduced in this way.
Claims (9)
- Grinding roller of a roller mill, having a roller shaft (3), a main roller body (13), and an outer wear ring (14) having wear protection, the connection between the roller shaft and the main roller body (13) being formed by a shrink fit,
characterised in that the main roller body (13) is formed by at least 3 or 4 coaxially arranged intermediate rings (13a, 13b, 13c). - Grinding roller according to claim 1, characterised in that the connections between the intermediate rings (13a, 13b, 13c) and the wear ring (11) are likewise formed by a shrink fit.
- Grinding roller according to claim 2, characterised in that the shrink fit is in conical or cylindrical form.
- Grinding roller according to claim 1, characterised in that the diameter of the grinding roller (1) is at least 3.00 m, preferably at least 3.50 m.
- Grinding roller according to claim 1, characterised in that the diameter of the grinding roller is at least 4.50 m and the width is at least 2.00 m.
- Grinding roller according to claim 1, characterised in that the wear protection is formed by shaped bodies which protrude from the surface of the wear ring (14) and/or by a hard build-up weld.
- Roller mill for the comminution of brittle grinding stock, having two grinding rollers (1, 2) according to one or more of the preceding claims which can be driven in opposite directions.
- Roller mill according to claim 7, characterised in that the roller mill is formed by a high-pressure roller mill which comprises a force application system (10) that is in operative connection with at least one grinding roller (13) for generating a grinding pressure of at least 50 MPa.
- Roller mill according to claim 8, characterised in that the roller shafts (3, 4) of the grinding rollers (1, 2) are mounted in slide bearings (5-8).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010061309A DE102010061309B3 (en) | 2010-12-17 | 2010-12-17 | Grinding roller of a roller mill |
PCT/EP2011/071156 WO2012079965A2 (en) | 2010-12-17 | 2011-11-28 | Grinding roller of a roller mill |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2498911A2 EP2498911A2 (en) | 2012-09-19 |
EP2498911B1 true EP2498911B1 (en) | 2013-08-28 |
Family
ID=45093738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11790945.7A Not-in-force EP2498911B1 (en) | 2010-12-17 | 2011-11-28 | Grinding roller of a roller mill |
Country Status (11)
Country | Link |
---|---|
US (1) | US9272284B2 (en) |
EP (1) | EP2498911B1 (en) |
AU (1) | AU2011344551B2 (en) |
BR (1) | BR112013013401A8 (en) |
CA (1) | CA2818801C (en) |
CL (1) | CL2013001688A1 (en) |
DE (1) | DE102010061309B3 (en) |
DK (1) | DK2498911T3 (en) |
MX (1) | MX2013006890A (en) |
PE (1) | PE20131507A1 (en) |
WO (1) | WO2012079965A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110639218A (en) * | 2019-09-10 | 2020-01-03 | 上海上诺精细化学有限公司 | Method and device for drying polymer fluid loss agent and improving bulk density |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015091086A1 (en) * | 2013-12-20 | 2015-06-25 | Khd Humboldt Wedag Gmbh | Method for making recesses in a rolling roller |
DE102015222020A1 (en) | 2015-11-09 | 2017-05-11 | Thyssenkrupp Ag | Tool for machining abrasive materials |
DE102019200190A1 (en) * | 2019-01-09 | 2020-07-09 | Thyssenkrupp Ag | Grinding roller with edge elements |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1885241A (en) * | 1930-10-24 | 1932-11-01 | Charles B Duckworth | Crushing roll |
US1938995A (en) * | 1931-08-17 | 1933-12-12 | Ross E Beynon | Built-up roll |
US2588900A (en) * | 1949-11-01 | 1952-03-11 | Jeffrey Mfg Co | Crusher-roll covering element |
SE408326B (en) | 1977-10-07 | 1979-06-05 | Asbrink Eiker Ab | CONTROL DEVICE FOR HYDRAULIC SYSTEM |
US4546527A (en) * | 1981-12-01 | 1985-10-15 | Kubota Ltd. | Composite sleeve for use in rolling rolls for H-section steel and channel steel |
DE3843173A1 (en) * | 1988-12-22 | 1990-07-05 | Kloeckner Humboldt Deutz Ag | WEAR-RESISTANT SURFACE ARMORING FOR THE ROLLS OF ROLLING MACHINES, IN PARTICULAR HIGH PRESSURE ROLLING PRESSES |
DE9422077U1 (en) * | 1993-07-20 | 1998-01-22 | Maschinenfabrik Köppern GmbH & Co KG, 45529 Hattingen | Roller press, especially for crushing highly abrasive substances |
WO1995003126A1 (en) | 1993-07-20 | 1995-02-02 | Maschinenfabrik Köppern Gmbh & Co. Kg | Roller presses, in particular for crushing strongly abrasive substances |
CA2759422A1 (en) * | 2009-04-20 | 2010-10-28 | Hofmann Engineering Pty Ltd. | Pressure roller |
-
2010
- 2010-12-17 DE DE102010061309A patent/DE102010061309B3/en not_active Expired - Fee Related
-
2011
- 2011-11-28 PE PE2013001419A patent/PE20131507A1/en active IP Right Grant
- 2011-11-28 WO PCT/EP2011/071156 patent/WO2012079965A2/en active Application Filing
- 2011-11-28 CA CA2818801A patent/CA2818801C/en not_active Expired - Fee Related
- 2011-11-28 EP EP11790945.7A patent/EP2498911B1/en not_active Not-in-force
- 2011-11-28 DK DK11790945.7T patent/DK2498911T3/en active
- 2011-11-28 AU AU2011344551A patent/AU2011344551B2/en not_active Ceased
- 2011-11-28 BR BR112013013401A patent/BR112013013401A8/en not_active Application Discontinuation
- 2011-11-28 MX MX2013006890A patent/MX2013006890A/en active IP Right Grant
- 2011-11-28 US US13/988,539 patent/US9272284B2/en not_active Expired - Fee Related
-
2013
- 2013-06-12 CL CL2013001688A patent/CL2013001688A1/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110639218A (en) * | 2019-09-10 | 2020-01-03 | 上海上诺精细化学有限公司 | Method and device for drying polymer fluid loss agent and improving bulk density |
Also Published As
Publication number | Publication date |
---|---|
DE102010061309B3 (en) | 2012-05-24 |
WO2012079965A2 (en) | 2012-06-21 |
PE20131507A1 (en) | 2014-01-10 |
WO2012079965A3 (en) | 2012-08-09 |
BR112013013401A8 (en) | 2018-02-06 |
MX2013006890A (en) | 2013-07-05 |
AU2011344551B2 (en) | 2016-03-03 |
CL2013001688A1 (en) | 2013-12-06 |
US20130248630A1 (en) | 2013-09-26 |
CA2818801A1 (en) | 2012-06-21 |
EP2498911A2 (en) | 2012-09-19 |
US9272284B2 (en) | 2016-03-01 |
AU2011344551A1 (en) | 2013-06-13 |
CA2818801C (en) | 2018-03-20 |
DK2498911T3 (en) | 2013-11-18 |
BR112013013401A2 (en) | 2016-09-06 |
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