EP3311922A1 - Agitator ball mill - Google Patents
Agitator ball mill Download PDFInfo
- Publication number
- EP3311922A1 EP3311922A1 EP16194369.1A EP16194369A EP3311922A1 EP 3311922 A1 EP3311922 A1 EP 3311922A1 EP 16194369 A EP16194369 A EP 16194369A EP 3311922 A1 EP3311922 A1 EP 3311922A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- ball mill
- stirring
- agitator
- discs
- 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
Links
- 238000000227 grinding Methods 0.000 claims abstract description 153
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000003756 stirring Methods 0.000 claims description 66
- 239000007787 solid Substances 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 description 12
- 239000000725 suspension Substances 0.000 description 9
- 230000001133 acceleration Effects 0.000 description 8
- 230000001419 dependent effect Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 238000000926 separation method 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
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/002—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with rotary cutting or beating elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
- B02C17/161—Arrangements for separating milling media and ground 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
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
- B02C17/163—Stirring means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
- B02C17/166—Mills in which a fixed container houses stirring means tumbling the charge of the annular gap type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
- B02C17/1835—Discharging devices combined with sorting or separating of material
- B02C17/184—Discharging devices combined with sorting or separating of material with separator arranged in discharge path of crushing 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
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/20—Disintegrating members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
- B02C2017/165—Mills in which a fixed container houses stirring means tumbling the charge with stirring means comprising more than one agitator
Definitions
- the invention relates to a stirred ball mill according to the preamble of patent claim 1.
- Such agitator ball mill is from the EP 2 178 642 A1 known.
- flowable millbase a millbase suspension
- the grinding suspension consists of a carrier liquid and solids distributed therein, wherein the initial particle size in the range of a few microns up to several hundred microns.
- the final fineness of the grinding is in the micrometer, submicron and in special cases in the nanometer range.
- the grinding media are carried along by the walls bounding the opening in different directions, so that a completely disordered passage of grinding media and grinding stock takes place between adjacent grinding cells, whereby the Zopfströmonne are disturbed very strongly, so that there is a very non-uniform MahlSystemver republic throughout the grinding chamber and in each individual grinding cell. Furthermore, there is a broad residence time distribution for the ground material during the passage of the grinding chamber.
- Mahlgut passage openings are formed for the passage of ground material and grinding media in the separator in the last, part of a separator forming stirring disc.
- recesses are formed congruently with the mentioned large openings in the other upstream stirring disks, are entrained by the grinding bodies and accelerated centrifugally outwards. Because of the depressions, that is to say for reasons of space, the grinding medium through-passage openings are arranged relatively close to the agitator shaft.
- the MahlSystem Struct is offset by the Rhackeinbauten within the active grinding chamber in relative motion.
- the grinding suspension to be treated is conveyed by means of a suitable pump through the sealed under pressure up to about 5 bar, in special cases up to 10 bar, operable grinding chamber.
- the solid particles present in the millbase suspension that is to say the millbase, are stressed between the relatively moving bodies and, depending on the morphology, are comminuted or dispersed.
- the invention has for its object to ensure in a generic agitator ball mill with particularly simple means a uniform grinding media distribution along the grinding chamber up to the highest Mahlgut-throughputs in a wide operating range and at the same time to achieve a particularly uniform grinding action.
- stirred ball mill can be operated with extraordinarily high throughputs if the otherwise break-through-free, ie closed, stirring discs have only small grinding material passage openings in the immediate vicinity of the agitator shaft.
- the term "in the immediate vicinity” means that both cases in which the grinding chamber inner boundary coincides with the radially inner boundary of the grinding material through-openings, thus the Mahlgut-passage openings adjacent to the Mahlraum-inner boundary, as well such cases in which the radially inner boundary of the grinding material through-openings has a - although small - distance from the grinding chamber inner boundary, are detected.
- the distance of the radially inner boundary of Regrind passage opening have a distance from the grinding chamber inner boundary, which is in a range up to a tenth ( ⁇ 0.1) of the radial extent of the respective stirring disc from the grinding chamber inner boundary to the radially outer edge of the respective stirring disc.
- a small distance of the radially inner boundary of the grinding stock passage opening from the grinding chamber inner boundary can be advantageous or even necessary, for example, for manufacturing reasons.
- In a very wide throughput range results in an absolutely constant power consumption, which is an indication of a uniform grinding media distribution, which is not adversely affected by an increase in throughput.
- the dependent claims 5 to 8 specify particularly advantageous developments of the inventive agitator ball mill, can be effected by the targeted different accelerations of the grinding media over the radial extent of the stirring discs, whereby a targeted transport of the grinding media is achieved to the outside.
- FIG. 1 a horizontal agitator ball mill is shown. This has in the usual way a stand 1, which is supported on the bottom 2.
- a stand 1 which is supported on the bottom 2.
- an optionally variable speed drive motor 3 is housed, which is provided with a V-belt pulley 4, from which via V-belt 5 and another V-belt pulley 6, a drive shaft 7 of the agitator ball mill is rotatably driven.
- the drive shaft 7 is rotatably mounted in an upper portion 8 of the stator 1 by means of a plurality of bearings 9.
- a substantially cylindrical grinding container 10 is releasably secured at the upper portion 8 of the stator 1.
- the cylindrical grinding container 10 has an inner wall 11 and is closed at an end facing the upper section 8 by means of a first cover 12 and at the opposite end by means of a second cover 13. It encloses a grinding chamber 14.
- the inner wall 11 thus forms the Mahlraum-outer boundary.
- agitator shaft 16 Concentric with the common center-longitudinal axis 15 of the grinding container 10 and the drive shaft 7 is a rotationally fixed to the drive shaft 7 connected agitator shaft 16 is arranged in the grinding chamber 14.
- the grinding chamber 14 is sealed by means of seals 17 between the cover 12 and the drive shaft 7.
- the agitator shaft 16 is cantilevered, so no longer stored in the region of the second lid 13. It is provided over its entire length in the grinding chamber 14 with stirring tools, which are circular stirring discs 18.
- the stirring discs 18 are mounted on the agitator shaft 16 and there in the usual manner, for example by a keyway-groove connection, not shown rotatably held on the agitator shaft 16 and axially held by spacer sleeves 19 at a distance from each other.
- the agitator shaft 16 with the spacer sleeves 19 and the stirring discs 18 form an agitator 20.
- the spacer sleeves 19 define the substantially annular cylindrical grinding chamber 14 on its inner side, thus forming a Mahlraum-inner boundary.
- a grinding material feed 21 opens into the grinding chamber 14. From the end of the grinding container 10 opposite the grinding material feed 21, a grinding material discharge 22 issues from the second cover 13.
- a cylindrical cage 23 is formed on the outer circumference of the second cover 13 adjacent last stirring disc 18. He has distributed over its circumference openings 24. In the delimited by the last stirring disc 18 and the cage 23 separating chamber 25, a screen body 26 is arranged, which is attached to the second cover 13 and connected to the grinding stock removal 22. These parts form one of the EP 2 178 642 A1 known regrind grinding media separator 27.
- the stirring discs 18 (or 18a, 18b, see Fig. 4 - Fig. 7 ) have one or more regrind passage openings 28, which are formed circular in the embodiment. On the - with respect to the central longitudinal axis 15 - inside the Mahlgut-passage openings 28 adjoin the distance sleeves 19, so the Mahlraum-inner boundary on.
- the regrind passage openings 28 are arranged at regular angular intervals from each other, for example, six openings 28, as in FIG. 2 shown. Apart from the grinding material passage openings 28, the stirring discs 18 (or 18a, 18b) have no openings, so they are completely closed.
- the grinding stock through-openings 28 each have a radially outer boundary, which has a distance R28, starting from the spacer sleeve 19 (grinding chamber inner boundary) in the radial direction of the stirring disk 18.
- R28 the distance between the spacer sleeve 19
- R18 the grinding chamber inner boundary
- R18 the radial extent of the spacer sleeve 19
- up to the radial outer edge 30 (radially outer edge) of the stirring discs 18 is: 0.05 ⁇ R18 ⁇ R28 ⁇ 0.25 ⁇ R18, and thereby preferably R28 ⁇ 0.20 ⁇ R18 and more preferably R28 ⁇ 0.15 ⁇ R18.
- Adjacent stirring discs 18 each have a same axial distance a from each other. Further define adjacent to each other stirring discs 18 a separation angle ⁇ , each by a line 29 between the radial outer edge 30 of a stirring disc 18 and the foot of an adjacent stirring disc 18 on the agitator shaft 16, d. H. is formed on the respective spacer sleeve 19 and by a line 31 parallel to the central longitudinal axis 15. The following applies: 30 ° ⁇ ⁇ 60 °.
- the gap width b of the gap 32 between the radial outer edge 30 and the wall 11 is at most 20% of the free radius R14 of the grinding chamber 14.
- the grinding chamber 14 is substantially filled with grinding media 33, preferably with grinding media 33 of relatively high density materials, for example ZrO 2 (zirconia) high performance ceramics having a solids density of 6.0 g / cm 3 .
- the Mahl Eisengrad (bulk volume of the grinding media relative to the volume of the grinding chamber) is in the range of 50% to 90%, in particular in the range of 80% to 90%.
- the high solids density of the grinding bodies 33 relative to the density of the grinding suspension is important for the desired effects, namely to promote the grinding media 33 in the area of the surfaces of the respective stirring disks 18 in the grinding element-compressed zone to the outside.
- each in FIG. 3 form plait flows 35 shown.
- the grinding media 33 and the grinding stock to be treated respectively flow in the area of a stirring disk 18 due to the tangential acceleration caused by the stirring disks 18 and then inwardly in the axially central region of the grinding cell 34 Agitator shaft 16 out.
- the grinding medium concentration is the lowest.
- material to be ground flows from a grinding cell 34 through the grinding material passage openings 28 into an adjacent grinding cell 34.
- the grinding stock flow through the grinding medium passage openings 28 is indicated by flow direction arrows 36 in FIG FIG. 3 indicated.
- the total flow direction 37 of the agitator ball mill is in the FIGS. 1 and 3 from left to right, ie from the grinding stock feed 21 to the grinding stock removal 22.
- the regrind passage openings 28 are not adjacent to the spacer sleeve 19, but the radially inner boundary of the respective regrind passage opening 28 has a small distance A in the radial direction of the spacer sleeve 19, which in the area may be up to a tenth ( ⁇ 0.1) of the radial extent R18 of the stirring disk from the distance sleeve 19 (Mahlraum-inner boundary) to the outer edge 30 (radially outer edge) of the stirring disk 18, so that in general 0 ⁇ A ⁇ 0.1 ⁇ R18 (in the case of the distance 0, the radially inner boundary of the respective regrind passage opening 28 adjoins the spacer sleeve 19, see FIG Fig. 2 ).
- the acceleration of the grinding media 33 by the stirring disks 18 can be achieved by groove-like channels formed in the stirring disks 18 (or 18a, 18b) 38a, 38b (see Fig. 4 - Fig. 7 ), which each begin at a grinding material passage opening 28 and are directed towards the radial outer edge 30 of the respective stirring disk 18 (or 18a, 18b), but without the radial outer edge 30 of the respective stirring disk 18 (FIG. or 18a, 18b) to break.
- a stirring disk outer ring 39 remains, which in the example shown has the thickness c of the stirring disk 18 (or 18a, 18b).
- the respective stirring discs 18 (or 18a, 18b) are not broken parallel to the central longitudinal axis 15.
- the respective stirring disk 18 (or 18a, 18b) is thus completely closed and has only the described grinding material passage openings 28.
- the channels 38a extend radially outward relative to the central longitudinal axis 15 and have a width d which corresponds to the diameter of the grinding material passage openings 28.
- the respective channels 38a are formed on both sides of the corresponding stirring disc 18a, so that between them - like FIG. 5 is removable - a thin wall portion 40a remains.
- the grinding media 33 are tangentially taken in the respective channel 38a of the trailing in the direction of rotation 41 channel wall 42a and thereby accelerated centrifugally.
- the tangential velocities and thus the resulting radially directed centrifugal accelerations increase radially outwards, as indicated by the radially outwardly increasing length of the speed arrows 43a.
- the stirring discs 18b after the FIGS. 6 and 7 also have a width d (corresponding to the diameter of the grinding material passage openings 28), through a wall portion 40b from each other channels 38b, starting from the respective regrind passage opening 28 a radially to the central longitudinal axis 15 extending inner rectilinear channel section 44, to which radially outwardly bent against the direction of rotation 41 of the stirring discs 18b outer Channel section 45 connects, which also ends in front of the outer ring 39. Due to the mentioned embodiment, the grinding media 33 receive accelerations in different directions.
- the entrainment of the grinding media 33 through the channel wall 42 b is tangential, while in the radially outer channel portion 45 due to the course of the channel wall 42 b is directed radially tangentially.
- the different lengths of speed arrows 43b symbolize the different directions and amounts of the forces exerted on the grinding media 33 accelerations.
- the channel 38b runs over its full width in the outer ring 39.
- the trailing channel wall 42b thus effects exclusively outward accelerations on the grinding bodies 33 up to its outermost end.
- the grinding bodies 33 which are in engagement with the channel 38b are thus pressed outwards, as it were, in a form-fitting manner.
- FIG. 8 shows a further usable in all the aforementioned embodiments development in which in relation to the total flow direction 37 of the agitator ball mill each between a spacer sleeve 19c and the grinding material passage opening 28 of the upstream stirring disc 18, a deflection channel 46 is formed which deflects the millbase flow radially from a grinding cell 34 located upstream in relation to the total flow-through direction 37 into the downstream grinding cell 34 and introduces it into the outwardly directed braid flow 35 in the downstream grinding cell 34.
- the spacer sleeve 19c is designed such that the grinding material passage opening arranged downstream in the overall flow-through direction 37 28 is freely accessible from the millbase flow in the grinding cell 34.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
Eine Rührwerkskugelmühle weist auf einer Rührwerks-Welle Rührscheiben (18) auf, wobei jeweils zwei benachbarte Rührscheiben (18) eine Mahlzelle begrenzen. Die Rührscheiben (18) weisen benachbarte Mahlzellen miteinander verbindende Mahlgut-Durchlass-Öffnungen (28) auf, die nur in unmittelbarer Nähe einer Mahlraum-Innenbegrenzung (19) ausgebildet sind und die eine radial äussere Begrenzung aufweisen, die einen Abstand R28 ausgehend von der Mahlraum-Innenbegrenzung (19) in radialer Richtung der Rührscheibe (18) aufweisen. Für das Verhältnis des Abstands R28 der radial äusseren Begrenzungen der Mahlgut-Durchlass-Öffnungen (28) zu einer radialen Erstreckung R18 der Rührscheiben (18) gilt: 0.05 · R18 ¤ R28 ¤ 0.25· R18. Im Übrigen sind die Rührscheiben (18) geschlossen ausgebildet.An agitator ball mill has agitator disks (18) on an agitator shaft, with two adjacent agitator disks (18) each delimiting a grinding cell. The agitator discs (18) have grinding material passage openings (28) connecting adjacent grinding cells to one another, which are only formed in the immediate vicinity of an inner grinding chamber boundary (19) and which have a radially outer boundary which is a distance R28 from the grinding chamber - Have an inner limit (19) in the radial direction of the agitator disc (18). The following applies to the ratio of the distance R28 between the radially outer limits of the grinding material passage openings (28) and a radial extension R18 of the agitator disks (18): 0.05 R18 ¤ R28 ¤ 0.25 R18. Otherwise, the agitator discs (18) are closed.
Description
Die Erfindung betrifft eine Rührwerkskugelmühle nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a stirred ball mill according to the preamble of
Eine derartige Rührwerkskugelmühle ist aus der
Bei der aus der
Bei der bekannten Rührwerkskugelmühle sind in der letzten, Teil einer Trenneinrichtung bildenden Rührscheibe Mahlkörper-Mahlgut-Durchtritts-Öffnungen zum Durchtritt von Mahlgut und Mahlkörpern in die Trenneinrichtung ausgebildet. In der letzten Rührscheibe sind deckungsgleich mit den erwähnten grossen Öffnungen in den anderen vorgeordneten Rührscheiben Vertiefungen ausgebildet, durch die Mahlkörper mitgenommen und zentrifugal nach aussen beschleunigt werden. Die Mahlgut-Mahlkörper-Durchtritts-Öffnungen sind wegen der Vertiefungen, also aus Platzgründen, relativ nahe zur Rührwerkswelle angeordnet.In the known agitator ball mill grinding media Mahlgut passage openings are formed for the passage of ground material and grinding media in the separator in the last, part of a separator forming stirring disc. In the last stirring disk, recesses are formed congruently with the mentioned large openings in the other upstream stirring disks, are entrained by the grinding bodies and accelerated centrifugally outwards. Because of the depressions, that is to say for reasons of space, the grinding medium through-passage openings are arranged relatively close to the agitator shaft.
Die Mahlkörperfüllung wird durch die Rühreinbauten innerhalb des aktiven Mahlraums in Relativbewegung versetzt. Die zu behandelnde Mahlsuspension wird mittels einer geeigneten Pumpe durch den abgedichteten unter Drücken bis zu ca. 5 bar, in Sonderfällen bis zu 10 bar, betreibbaren Mahlraum gefördert. Die in der Mahlsuspension, also dem Mahlgut, befindlichen Feststoffpartikel werden zwischen den relativ zueinander bewegten Mahlkörpern beansprucht und je nach Morphologie zerkleinert oder dispergiert.The Mahlkörperfüllung is offset by the Rühreinbauten within the active grinding chamber in relative motion. The grinding suspension to be treated is conveyed by means of a suitable pump through the sealed under pressure up to about 5 bar, in special cases up to 10 bar, operable grinding chamber. The solid particles present in the millbase suspension, that is to say the millbase, are stressed between the relatively moving bodies and, depending on the morphology, are comminuted or dispersed.
Durch die von dem Mahlgut in Folge seiner Viskosität auf die Mahlkörper ausgeübten Schleppkräfte werden letztere mit der Strömung in Richtung zur Mahlgut-Abführung transportiert. Hierdurch ergibt sich grundsätzlich eine ungleichmässige Mahlkörperverteilung entlang der Achse des Mahlraums. Hinzu kommt die ungleichförmige Verteilung der Mahlkörper in den einzelnen Mahlzellen aufgrund der ungeordneten Beschleunigung der Mahlkörper an den Wänden der grossen Öffnungen in den Rührscheiben. Bei relativ hohen Durchsätzen und/oder relativ hohen Viskositäten des Mahlguts stellt sich sehr leicht eine verschleissintensive Mahlkörperverpressung ein. Hierbei kommt es oft auch zu einer Überbeanspruchung des Mahlguts und in der Folge zu dessen Schädigung.As a result of the drag forces exerted by the millbase on the grinding media as a result of its viscosity, the latter are transported with the flow in the direction of the grinding stock removal. This results in principle in an uneven Mahlkörperverteilung along the axis of the grinding chamber. In addition, there is the non-uniform distribution of the grinding media in the individual grinding cells due to the disordered acceleration of the grinding media on the walls of the large openings in the stirring discs. With relatively high throughputs and / or relatively high viscosities of the millbase, a wear-intensive grinding media compacting is very easily established. This often leads to an overuse of the ground material and as a result to its damage.
Der Erfindung liegt die Aufgabe zugrunde, in einer gattungsgemässen Rührwerkskugelmühle mit besonders einfachen Mitteln eine gleichmässige Mahlkörperverteilung entlang des Mahlraumes bis zu höchsten Mahlgut-Durchsätzen in einem breiten Betriebsbereich sicherzustellen und gleichzeitig eine besonders gleichförmige Mahlwirkung zu erzielen.The invention has for its object to ensure in a generic agitator ball mill with particularly simple means a uniform grinding media distribution along the grinding chamber up to the highest Mahlgut-throughputs in a wide operating range and at the same time to achieve a particularly uniform grinding action.
Diese Aufgabe wird erfindungsgemäss durch eine Rührwerkskugelmühle mit den Merkmalen des unabhängigen Patentanspruchs 1 gelöst.This object is achieved according to the invention by a stirred ball mill having the features of
Überraschenderweise hat sich gezeigt, dass eine solche Rührwerkskugelmühle mit ausserordentlich hohen Durchsätzen betreibbar ist, wenn die ansonsten durchbruchfreien, also geschlossenen Rührscheiben nur kleine Mahlgut-Durchlass-Öffnungen in unmittelbarer Nähe der Rührwerks-Welle aufweisen. Der Begriff "in unmittelbarer Nähe" bedeutet, dass damit sowohl solche Fälle, in denen die Mahlraum-Innenbegrenzung mit der radial inneren Begrenzung der Mahlgut-Durchlass-Öffnungen zusammenfällt, somit die Mahlgut-Durchlass-Öffnungen an die Mahlraum-Innenbegrenzung angrenzen, als auch solche Fälle, in denen die radial innere Begrenzung der Mahlgut-Durchlass-Öffnungen einen - wenn auch geringen - Abstand von der Mahlraum-Innenbegrenzung aufweist, erfasst sind. Beispielsweise kann der Abstand der radial inneren Begrenzung der Mahlgut-Durchlass-Öffnung einen Abstand von der Mahlraum-Innenbegrenzung haben, der in einem Bereich bis zu einem Zehntel (≤ 0.1) der radialen Erstreckung der jeweiligen Rührscheibe von der Mahlraum-Innenbegrenzung bis zum radial äusseren Rand der jeweiligen Rührscheibe liegt. Ein solcher geringer Abstand der radial inneren Begrenzung der Mahlgut-Durchlass-Öffnung von der Mahlraum-Innenbegrenzung kann beispielsweise aus fertigungstechnischen Gründen vorteilhaft oder sogar erforderlich sein. In einem sehr weiten Durchsatzbereich ergibt sich eine absolut konstante Leistungsaufnahme, was ein Indiz für eine gleichmässige Mahlkörperverteilung darstellt, die durch eine Durchsatzsteigerung nicht negativ beeinflusst wird. Weiterhin ergeben sich im gesamten Betriebsbereich deutlich engere Partikelverteilungen, als sie ansonsten im Einpassagen-Betrieb mit Rührwerkskugelmühlen mit Rührscheiben erzielbar sind, die die ansonsten üblichen grossen Durchbrüche im radial weiter aussen gelegenen Bereich aufweisen. Wesentlich für die geschilderten Effekte ist, dass die unmittelbar zur Rührwerks-Welle benachbart angeordneten Mahlgut-Durchlass-Öffnungen in den benachbarte Mahlzellen begrenzenden Rührscheiben ausgebildet sind. Die Mahlkörper werden über den grössten Teil der Oberfläche der Rührscheiben nach aussen beschleunigt, so dass im Bereich der Mahlbehälter-Wand eine hohe Verdichtung der Mahlkörper eintritt, die einen entsprechend hohen Strömungswiderstand für das Mahlgut, also die Mahlsuspension, bildet. Es erfolgt also kein sogenanntes Durchschiessen, das heisst freies Durchströmen, des Mahlgutes im Aussenbereich des Mahlraums. Dieser Effekt wird besonders gefördert, wenn die Differenz der Feststoffdichte der Mahlkörper und der Gemisch-Dichte der Mahlsuspension, also des aus Feststoffen und einer Trägerflüssigkeit bestehenden Mahlguts, möglichst gross ist, vorzugsweise gleich oder grösser 2 g/cm3. Da sich die verhältnismässig kleinen Mahlgut-Durchtritts-Öffnungen in mahlkörperarmen Bereichen der Mahlzellen befinden, tritt kein unkontrollierter Mahlgut-Austausch zwischen benachbarten Mahlzellen auf und insbesondere treten keine nennenswerten Mahlkörper-Durchtritte durch die Mahlgut-Durchtritts-Öffnungen auf.Surprisingly, it has been found that such a stirred ball mill can be operated with extraordinarily high throughputs if the otherwise break-through-free, ie closed, stirring discs have only small grinding material passage openings in the immediate vicinity of the agitator shaft. The term "in the immediate vicinity" means that both cases in which the grinding chamber inner boundary coincides with the radially inner boundary of the grinding material through-openings, thus the Mahlgut-passage openings adjacent to the Mahlraum-inner boundary, as well such cases in which the radially inner boundary of the grinding material through-openings has a - although small - distance from the grinding chamber inner boundary, are detected. For example, the distance of the radially inner boundary of Regrind passage opening have a distance from the grinding chamber inner boundary, which is in a range up to a tenth (≤ 0.1) of the radial extent of the respective stirring disc from the grinding chamber inner boundary to the radially outer edge of the respective stirring disc. Such a small distance of the radially inner boundary of the grinding stock passage opening from the grinding chamber inner boundary can be advantageous or even necessary, for example, for manufacturing reasons. In a very wide throughput range results in an absolutely constant power consumption, which is an indication of a uniform grinding media distribution, which is not adversely affected by an increase in throughput. Furthermore, significantly narrower particle distributions result over the entire operating range than can otherwise be achieved in one-pass operation with stirred ball mills with stirrer disks, which have the otherwise usual large apertures in the radially outward-lying region. Essential for the described effects is that the immediately adjacent to the agitator shaft arranged Mahlgut-passage openings are formed in the adjacent Mahlzellen limiting stirring discs. The grinding media are accelerated outwards over most of the surface of the stirring disks so that a high compression of the grinding bodies occurs in the region of the grinding container wall, which forms a correspondingly high flow resistance for the grinding material, ie the grinding suspension. So there is no so-called shooting through, that is, free flow, the ground material in the outer region of the grinding chamber. This effect is particularly promoted when the difference between the solids density of the grinding media and the mixture density of the grinding suspension, ie the grinding stock consisting of solids and a carrier liquid, is as large as possible, preferably equal to or greater than 2 g / cm 3 . Since the relatively small regrind passage openings are in low-milling areas of the grinding cells, occurs no uncontrolled grinding material exchange between adjacent grinding cells and in particular no appreciable grinding media passages through the grinding material through openings occur.
Besonders vorteilhafte relative radiale Erstreckungen der Mahlgut-Durchlass-Öffnungen der erfindungsgemässen Rührwerkskugelmühle ergeben sich aus den Merkmalen der abhängigen Patentansprüche 2 und 3.Particularly advantageous relative radial extensions of the grinding stock through-openings of the agitator ball mill according to the invention result from the features of the
Grundsätzlich kann nur eine Mahlgut-Durchlass-Öffnung vorhanden sein. Im abhängigen Patentanspruch 4 ist eine vorteilhafte Anordnung der Mahlgut-Durchlass-Öffnungen um die Rührwerks-Welle der erfindungsgemässen Rührwerkskugelmühle spezifiziert.In principle, only one regrind passage opening can be present. In the
Die abhängigen Patentansprüche 5 bis 8 spezifizieren besonders vorteilhafte Weiterbildungen der erfindungsgemässen Rührwerkskugelmühle, durch die gezielt unterschiedliche Beschleunigungen der Mahlkörper über die radiale Erstreckung der Rührscheiben bewirkt werden können, wodurch ein gezielter Transport der Mahlkörper nach aussen erreicht wird.The dependent claims 5 to 8 specify particularly advantageous developments of the inventive agitator ball mill, can be effected by the targeted different accelerations of the grinding media over the radial extent of the stirring discs, whereby a targeted transport of the grinding media is achieved to the outside.
Durch die Merkmale des abhängigen Patentanspruchs 9 wird bei der erfindungsgemässen Rührwerkskugelmühle erreicht, dass das Mahlgut geführt aus der Zirkularströmung, d. h. der Zopfströmung einer Mahlzelle in eine gleichartige Strömung in einer nachgeordneten Mahlzelle strömt.Due to the features of dependent claim 9 is achieved in the inventive agitator ball mill, that the ground material out of the circular flow, d. H. the Zopfströmung a Mahlzelle flows into a similar flow in a downstream Mahlzelle.
Weitere Vorteile und Einzelheiten der Erfindung ergeben sich aus weiteren abhängigen Patentansprüchen und der nachfolgenden Beschreibung von Ausführungsbeispielen der Erfindung anhand der Zeichnung. Es zeigt:
- Fig. 1
- ein Ausführungsbeispiel der erfindungsgemässen Rührwerkskugelmühle in schematischer Darstellung in einer Seitenansicht in teilweise aufgebrochener Darstellung,
- Fig. 2
- eine Draufsicht auf ein erstes Ausführungsbeispiel einer Rührscheibe der erfindungsgemässen Rührwerkskugelmühle,
- Fig. 3
- eine Teildarstellung aus
Fig. 1 in gegenüberFig. 1 vergrössertem Massstab, - Fig.4
- eine Draufsicht auf ein zweites Ausführungsbeispiel einer Rührscheibe der erfindungsgemässen Rührwerkskugelmühle,
- Fig. 5
- einen Teilquerschnitt durch die Rührscheibe nach
Fig. 4 , - Fig. 6
- eine Draufsicht auf ein drittes Ausführungsbeispiel einer Rührscheibe der erfindungsgemässen Rührwerkskugelmühle,
- Fig. 7
- einen Teilquerschnitt durch die Rührscheibe nach
Fig. 6 und - Fig. 8
- eine Darstellung entsprechend
Fig. 3 mit gegenüberFig. 1 undFig. 3 geänderter Mahlraum-Innenbegrenzung.
- Fig. 1
- an embodiment of the inventive agitator ball mill in a schematic representation in a side view in a partially broken view,
- Fig. 2
- a top view of a first embodiment of a stirring disk of the inventive agitator ball mill,
- Fig. 3
- a partial view
Fig. 1 in oppositeFig. 1 enlarged scale, - Figure 4
- a top view of a second embodiment of a stirring disk of the inventive agitator ball mill,
- Fig. 5
- a partial cross section through the stirring disc after
Fig. 4 . - Fig. 6
- a top view of a third embodiment of a stirring disk of the inventive agitator ball mill,
- Fig. 7
- a partial cross section through the stirring disc after
Fig. 6 and - Fig. 8
- a representation accordingly
Fig. 3 with oppositeFig. 1 andFig. 3 modified grinding chamber inner boundary.
In
An dem oberen Abschnitt 8 des Ständers 1 ist ein im Wesentlichen zylindrischer Mahlbehälter 10 lösbar befestigt. Der zylindrische Mahlbehälter 10 weist eine Innen-Wand 11 auf und ist an einem dem oberen Abschnitt 8 zugewandten Ende mittels eines ersten Deckels 12 und am gegenüberliegenden Ende mittels eines zweiten Deckels 13 verschlossen. Er umschliesst einen Mahlraum 14. Die Innen-Wand 11 bildet also die Mahlraum-Aussenbegrenzung.At the
Konzentrisch zur gemeinsamen Mittel-Längs-Achse 15 von Mahlbehälter 10 und Antriebswelle 7 ist im Mahlraum 14 eine drehfest mit der Antriebswelle 7 verbundene Rührwerks-Welle 16 angeordnet. Der Mahlraum 14 ist mittels Dichtungen 17 zwischen dem Deckel 12 und der Antriebswelle 7 abgedichtet. Die Rührwerks-Welle 16 ist fliegend gelagert, also im Bereich des zweiten Deckels 13 nicht mehr gelagert. Sie ist über ihre volle Länge im Mahlraum 14 mit Rührwerkzeugen versehen, bei denen es sich um kreisförmige Rührscheiben 18 handelt.Concentric with the common center-
Die Rührscheiben 18 sind auf die Rührwerks-Welle 16 aufgesteckt und werden dort in üblicher Weise, beispielsweise durch eine nicht dargestellte Passfeder-Nut-Verbindung, drehfest auf der Rührwerks-Welle 16 gehalten und axial durch Distanz-Hülsen 19 auf Abstand voneinander gehalten. Die Rührwerks-Welle 16 mit den Distanz-Hülsen 19 und den Rührscheiben 18 bilden ein Rührwerk 20. Die Distanz-Hülsen 19 begrenzen den im Wesentlichen ringzylindrischen Mahlraum 14 an seiner Innenseite, bilden also eine Mahlraum-Innenbegrenzung.The stirring
Im Bereich des ersten Deckels 12 mündet eine Mahlgut-Zuführung 21 in den Mahlraum 14. Aus dem der Mahlgut-Zuführung 21 entgegengesetzten Ende des Mahlbehälters 10 mündet aus dem zweiten Deckel 13 eine Mahlgut-Abführung 22 aus.In the region of the
Am Aussenumfang der dem zweiten Deckel 13 benachbarten letzten Rührscheibe 18 ist ein zylinderförmiger Käfig 23 ausgebildet. Er weist über seinen Umfang verteilt Durchbrechungen 24 auf. In den von der letzten Rührscheibe 18 und dem Käfig 23 umgrenzten Abtrenn-Raum 25 ist ein Siebkörper 26 angeordnet, der am zweiten Deckel 13 angebracht und mit der Mahlgut-Abführung 22 verbunden ist. Diese Teile bilden eine aus der
Die Rührscheiben 18 (bzw. 18a, 18b; siehe
Die Mahlgut-Durchlass-Öffnungen 28 weisen jeweils eine radial äussere Begrenzung auf, die einen Abstand R28 ausgehend von der Distanz-Hülse 19 (Mahlraum-Innenbegrenzung) in radialer Richtung der Rührscheibe 18 aufweist. Für das Verhältnis des Abstands R28 der radial äusseren Begrenzung der jeweiligen Mahlgut-Durchlass-Öffnung 28 von der Distanz-Hülse 19, also der Mahlraum-Innenbegrenzung, zur radialen Erstreckung R18 von der Distanz-Hülse 19, also der Mahlraum-Innenbegrenzung, bis zum radialen Aussen-Rand 30 (radial äusserer Rand) der Rührscheiben 18 gilt: 0.05 · R18 ≤ R28 ≤ 0.25 · R18, und dabei bevorzugt R28 ≤ 0.20 · R18 und weiter bevorzugt R28 ≤ 0.15 · R18.The grinding stock through-
Zueinander benachbart angeordnete Rührscheiben 18 weisen jeweils einen gleichen axialen Abstand a voneinander auf. Weiterhin definieren zueinander benachbart angeordnete Rührscheiben 18 einen Trennwinkel α, der jeweils durch eine Linie 29 zwischen dem radialen Aussen-Rand 30 einer Rührscheibe 18 und dem Fuss einer benachbarten Rührscheibe 18 an der Rührwerks-Welle 16, d. h. an der jeweiligen Distanz-Hülse 19 und durch eine zur Mittel-Längs-Achse 15 parallele Linie 31 gebildet ist. Es gilt hierbei: 30° < α < 60°.Adjacent
Die Spaltbreite b des Spaltes 32 zwischen dem radialen Aussen-Rand 30 und der Wand 11 beträgt höchstens 20% vom freien Radius R14 des Mahlraums 14.The gap width b of the
Der Mahlraum 14 ist im Wesentlichen mit Mahlkörpern 33 gefüllt, und zwar vorzugsweise mit Mahlkörpern 33 aus Materialien relativ hoher Dichte, zum Beispiel Hochleistungskeramik aus ZrO2 (Zirkondioxid) mit einer Feststoffdichte von 6.0 g/cm3. Der Mahlkörperfüllgrad (Schüttvolumen der Mahlkörper relativ zum Volumen des Mahlraums) liegt im Bereich von 50% bis 90%, insbesondere im Bereich von 80% bis 90%. Die hohe Feststoffdichte der Mahlkörper 33 relativ zur Dichte der Mahlsuspension ist wichtig für die angestrebten Effekte, nämlich die Mahlkörper 33 im Bereich der Oberflächen der jeweiligen Rührscheiben 18 in die mahlkörperverdichtete Zone nach aussen zu fördern.The grinding
Zwischen jeweils benachbarten Rührscheiben 18 sind Mahlzellen 34 gebildet, in denen sich bei Drehantrieb der Rührwerks-Welle 16 jeweils in
Die Beschleunigung der Mahlkörper 33 durch die Rührscheiben 18 kann durch in den Rührscheiben 18 (bzw. 18a, 18b) ausgebildete nutartige Kanäle 38a, 38b (siehe
Gemäss einem ersten Ausführungsbeispiel nach den
Bei der Ausgestaltung der Rührscheiben 18b nach den
Claims (13)
dass die Öffnungen als Mahlgut-Durchlass-Öffnungen (28) ausgebildet und nur in unmittelbarer Nähe der Mahlraum-Innenbegrenzung (19) angeordnet sind, wobei die Mahlgut-Durchlass-Öffnungen (28) jeweils eine radial äussere Begrenzung aufweisen, die einen Abstand R28 ausgehend von der Mahlraum-Innenbegrenzung in radialer Richtung der Rührscheibe (18) aufweist,
wobei für das Verhältnis des Abstands R28 der radial äusseren Begrenzung der Mahlgut-Durchlass-Öffnungen (28) zur radialen Erstreckung R18 der Rührscheiben (18) gilt: 0.05 · R18 ≤ R28 ≤ 0.25 · R18, und dass die Rührscheiben (18) ansonsten geschlossen ausgebildet sind.stirred ball mill
in that the openings are designed as regrind passage openings (28) and only in the immediate vicinity of the grinding chamber inner boundary (19) are arranged, wherein the Mahlgut-passage openings (28) each have a radially outer boundary, which has a distance R28 from the Mahlraum-inner boundary in the radial direction of the stirring disc (18),
for the ratio of the distance R28 of the radially outer boundary of the regrind passage openings (28) to the radial extent R18 of the agitating discs (18): 0.05 · R18 ≤ R28 ≤ 0.25 · R18, and that the stirring discs (18) are otherwise closed are formed.
dass für das Verhältnis des Abstands R28 der radial äusseren Begrenzung der Mahlgut-Durchlass-Öffnungen (28) zur radialen Erstreckung R18 der Rührscheiben (18) zusätzlich gilt: R28 ≤ 0.20 · R18.Agitator ball mill according to claim 1, characterized
in that for the ratio of the distance R28 of the radially outer boundary of the grinding material passage openings (28) to the radial extent R18 of the stirring disks (18), in addition: R28 ≦ 0.20 · R18.
dass die Mahlgut-Durchlass-Öffnungen (28) in gleichmässigen Winkelabständen voneinander angeordnet sind.Agitator ball mill according to one of claims 1 to 3, characterized
in that the regrind passage openings (28) are arranged at uniform angular intervals from one another.
dass an beiden Seiten der Rührscheiben (18a, 18b) - ausgehend von den Mahlgut-Durchlass-Öffnungen (28) - die jeweilige Rührscheibe (18a, 18b) in Richtung der Mittel-Längs-Achse (15) der Rührscheibe (18a, 18b) nicht durchbrechende nutartige Kanäle (38a, 38b) ausgebildet sind, die zum radial äusseren Rand (30) der Rührscheibe (18a, 18b) gerichtet und zum radial äusseren Rand (3) der Rührscheibe (18a, 18b) hin geschlossen sind.Agitator ball mill according to one of claims 1 to 4, characterized
that on both sides of the stirring discs (18a, 18b) - starting from the grinding material passage openings (28) - the respective stirring disc (18a, 18b) in the direction of the central longitudinal axis (15) of the stirring disc (18a, 18b) are not formed by groove-like channels (38a, 38b) are formed, which are directed to the radially outer edge (30) of the stirring disc (18a, 18b) and to the radially outer edge (3) of the stirring disc (18a, 18b) out are.
dass die an unterschiedlichen der beiden Seiten der Rührscheiben (18a, 18b) ausgebildeten, von einer Mahlgut-Durchlass-Öffnung (28) ausgehenden Kanäle (38a, 38b) jeweils paarweise deckungsgleich angeordnet sind.Agitator ball mill according to claim 5, characterized in that
in that the channels (38a, 38b) formed on different sides of the agitating discs (18a, 18b) and extending from a grinding material through-passage opening (28) are each arranged congruently in pairs.
dass die an den beiden Seiten der Rührscheiben (18a) ausgebildeten Kanäle (38a) geradlinig und radial zur Mittel-Längs-Achse (15) verlaufend ausgebildet sind.Agitator ball mill according to one of claims 5 or 6, characterized
in that the channels (38a) formed on the two sides of the agitating discs (18a) are rectilinear and extend radially to the central longitudinal axis (15).
dass die an den beiden Seiten der Rührscheiben (18b) ausgebildeten Kanäle (38b) einen äusseren, entgegen der Drehrichtung (38) der Rührscheibe (18b) abgebogenen Kanal-Abschnitt (45) aufweisen.Agitator ball mill according to one of claims 5 or 6, characterized
in that the channels (38b) formed on the two sides of the agitating discs (18b) have an outer channel section (45) bent counter to the direction of rotation (38) of the agitating disc (18b).
dass die Rührscheiben (18a, 18b) einen radial aussen angeordneten Rührscheiben-Aussenring (39) aufweisen.Agitator ball mill according to one of claims 5 to 8, characterized
that the stirring discs (18a, 18b) have a radially outer agitator discs-outer ring (39).
dass in einer Mahlzelle (34) hinter einer Mahlgut-Durchlass-Öffnung (28), die eine in Bezug auf eine Gesamt-Durchström-Richtung (37) der Rührwerkskugelmühle vorgeordnete Mahlzelle (34) mit einer nachgeordneten Mahlzelle (34) verbindet, ein radial nach aussen in die Mahlzelle (34) einmündender Umlenkkanal (46) ausgebildet ist.Agitator ball mill according to one of claims 1 to 9, characterized
that in a grinding cell (34) behind a Mahlgut-passage opening (28) which connects a with respect to a total flow direction (37) of the agitator ball mill upstream Mahlzelle (34) with a downstream Mahlzelle (34), a radial to the outside in the grinding cell (34) opening deflection channel (46) is formed.
dass zwischen dem radial äusseren Rand (30) der Rührscheiben (18) und der Wand (11) des Mahlbehälters (10) jeweils ein Spalt (32) ausgebildet ist, dessen radiale Spaltbreite b maximal 20% eines freien Radius R14 des Mahlraums (14) zwischen der Mahlraum-Innenbegrenzung (19) und der Mahlbehälter-Wand (11) beträgt.Agitator ball mill according to one of claims 1 to 10, characterized
that between the radially outer edge (30) of the stirring discs (18) and the wall (11) of the grinding container (10) in each case a gap (32) is formed, the radial gap width b at most 20% of a free radius R14 of the grinding chamber (14) between the grinding chamber inner boundary (19) and the grinding container wall (11).
dass der Mahlraum (14) mit Mahlkörpern (33) gefüllt ist, deren Schüttvolumen 50% bis 90% des Volumens des Mahlraums (14) entspricht, insbesondere 80% bis 90% des Volumens des Mahlraums (14).Agitator ball mill according to one of claims 1 to 11, characterized
that the grinding chamber (14) is filled with grinding bodies (33) whose bulk volume corresponds to 50% to 90% of the volume of the grinding chamber (14), in particular 80% to 90% of the volume of the grinding chamber (14).
dass die Mahlkörper (33) eine Feststoffdichte aufweisen, die um mindestens 2 g/cm3 grösser ist als die Gemisch-Dichte des Mahlguts.Agitator ball mill according to one of claims 1 to 12, characterized
that the grinding media (33) have a solids density, which is greater by at least 2 g / cm 3 as the mixture density of the mill-base.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16194369T PL3311922T3 (en) | 2016-10-18 | 2016-10-18 | Agitator ball mill |
DK16194369.1T DK3311922T3 (en) | 2016-10-18 | 2016-10-18 | Stirring Ball Mill |
ES16194369T ES2713001T3 (en) | 2016-10-18 | 2016-10-18 | Ball mill |
EP16194369.1A EP3311922B1 (en) | 2016-10-18 | 2016-10-18 | Agitator ball mill |
MYPI2017703643A MY188730A (en) | 2016-10-18 | 2017-09-27 | Agitator ball mill |
CN201710945790.4A CN107952529B (en) | 2016-10-18 | 2017-10-12 | Stirrer type ball mill |
US15/783,431 US10792665B2 (en) | 2016-10-18 | 2017-10-13 | Agitator ball mill |
KR1020170133970A KR102501892B1 (en) | 2016-10-18 | 2017-10-16 | Agitator ball mill |
JP2017201897A JP2018108573A (en) | 2016-10-18 | 2017-10-18 | Agitator ball mill |
HK18107541.9A HK1248173A1 (en) | 2016-10-18 | 2018-06-11 | Agitator ball mill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16194369.1A EP3311922B1 (en) | 2016-10-18 | 2016-10-18 | Agitator ball mill |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3311922A1 true EP3311922A1 (en) | 2018-04-25 |
EP3311922B1 EP3311922B1 (en) | 2018-12-05 |
Family
ID=57144920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16194369.1A Active EP3311922B1 (en) | 2016-10-18 | 2016-10-18 | Agitator ball mill |
Country Status (10)
Country | Link |
---|---|
US (1) | US10792665B2 (en) |
EP (1) | EP3311922B1 (en) |
JP (1) | JP2018108573A (en) |
KR (1) | KR102501892B1 (en) |
CN (1) | CN107952529B (en) |
DK (1) | DK3311922T3 (en) |
ES (1) | ES2713001T3 (en) |
HK (1) | HK1248173A1 (en) |
MY (1) | MY188730A (en) |
PL (1) | PL3311922T3 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013111762A1 (en) * | 2013-07-08 | 2015-01-08 | Netzsch-Feinmahltechnik Gmbh | Agitator ball mill with axial channels |
EP3311921B1 (en) * | 2016-10-18 | 2018-09-26 | Willy A. Bachofen AG | Agitator ball mill |
DE102018123096B4 (en) * | 2018-09-20 | 2022-01-27 | Netzsch Feinmahltechnik Gmbh | Agitator ball mill and method for operating an agitator ball mill |
CN110385175A (en) * | 2019-07-29 | 2019-10-29 | 成都利君实业股份有限公司 | One kind can quantity-produced cement grog grinding implementation equipment |
CN110449226B (en) * | 2019-07-29 | 2024-04-05 | 成都利君实业股份有限公司 | Cement clinker grinding implementation equipment and stirring device thereof |
DE102021123408A1 (en) * | 2021-09-09 | 2023-03-09 | Netzsch-Feinmahltechnik Gmbh | agitator mill |
CN113856841A (en) * | 2021-09-23 | 2021-12-31 | 深圳市叁星飞荣机械有限公司 | Circulating grinding mechanism of sand mill and sand mill |
DE102022122868A1 (en) * | 2022-09-08 | 2024-03-14 | Netzsch-Feinmahltechnik Gmbh | AGITATOR MILL WITH SPECIAL DRIVERS |
CN116851099B (en) * | 2023-07-11 | 2023-12-08 | 浙江艾领创矿业科技有限公司 | Small-size ring dislocation distribution's stirring structure and contain its sand mill |
CN117463468B (en) * | 2023-12-08 | 2024-08-16 | 浙江艾领创矿业科技有限公司 | Molding sand mill for mineral separation |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2178642A1 (en) | 2007-08-17 | 2010-04-28 | Bühler Ag | Stirrer mill |
CH700446A1 (en) * | 2009-02-24 | 2010-08-31 | Bachofen Willy A Ag | Stirred ball. |
CN202570278U (en) * | 2012-03-13 | 2012-12-05 | 资阳赛特化工有限公司 | Coating horizontal type sand mill |
DE102013111762A1 (en) * | 2013-07-08 | 2015-01-08 | Netzsch-Feinmahltechnik Gmbh | Agitator ball mill with axial channels |
EP2905080A1 (en) * | 2014-02-07 | 2015-08-12 | Willy A. Bachofen AG | Agitator ball mill |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH477229A (en) | 1967-03-21 | 1969-08-31 | Vyzk Ustav Organ Syntez | Device for dispersing suspensions of solid particles to colloidal fineness |
US3550915A (en) * | 1968-04-10 | 1970-12-29 | Vyzk Ustav Organ Syntez | Agitating apparatus |
JPS5645768A (en) * | 1979-09-25 | 1981-04-25 | Ashizawa Tetsukou Kk | Ball mill for crushing solid grain |
US4513917A (en) * | 1983-06-16 | 1985-04-30 | Morehouse Industries, Inc. | Sand mill rotor discs |
DE3716295A1 (en) | 1987-05-15 | 1988-11-24 | Fryma Maschinenbau Gmbh | SPLIT BALL MILL FOR CONTINUOUS FINE-SIZING, ESPECIALLY UNLOCKING MICRO-ORGANISMS AND DISPERSING SOLIDS IN LIQUID |
DE4142213C2 (en) * | 1991-12-20 | 2003-01-09 | Draiswerke Gmbh | agitating mill |
US5333804A (en) * | 1993-08-20 | 1994-08-02 | Premier Mill Corp. | Agitator mill |
WO1995027563A1 (en) * | 1994-04-11 | 1995-10-19 | Mount Isa Mines Limited | Attrition mill |
DE4432203A1 (en) * | 1994-09-09 | 1996-03-14 | Evv Vermoegensverwaltungs Gmbh | Agitator mill |
DE4432198A1 (en) * | 1994-09-09 | 1996-03-14 | Evv Vermoegensverwaltungs Gmbh | Agitator mill |
JP3830194B2 (en) * | 1996-02-27 | 2006-10-04 | 浅田鉄工株式会社 | Stirring disk and media stirring mill |
JPH11319607A (en) * | 1998-05-15 | 1999-11-24 | Toray Ind Inc | Micronizing device for granule |
DE60115392T2 (en) * | 2000-01-10 | 2006-08-17 | Premier Mill Corp. | FINE MILL WITH IMPROVED WASHER |
JP4073815B2 (en) * | 2002-04-30 | 2008-04-09 | 大日本インキ化学工業株式会社 | Dispersing apparatus and dispersing method |
EP1468739B1 (en) * | 2003-04-15 | 2008-03-19 | Willy A. Bachofen AG | Agitator ball mill |
DE102008058585A1 (en) * | 2008-11-22 | 2010-05-27 | Netzsch-Feinmahltechnik Gmbh | stirred ball mill |
CA2747175C (en) * | 2008-12-19 | 2017-10-10 | Xstrata Technology Pty Ltd | Attrition mill |
ES2432617T3 (en) * | 2009-07-06 | 2013-12-04 | Willy A. Bachofen Ag | Ball mill with stirrer |
EP2683487B1 (en) * | 2011-03-11 | 2016-03-09 | Willy A. Bachofen AG | Stirred ball mill |
KR101310130B1 (en) * | 2012-02-10 | 2013-09-24 | 나노인텍 주식회사 | Grinding and dispersing apparatus for processing of minute particle of materials |
CN203304024U (en) * | 2013-05-08 | 2013-11-27 | 昆明理工大学 | Stirring mechanism of stirring mill |
CN203235524U (en) * | 2013-05-16 | 2013-10-16 | 中国矿业大学(北京) | Ultra-thin horizontal stirring mill mixer |
DE102014117188B3 (en) * | 2014-11-24 | 2016-05-12 | Netzsch-Feinmahltechnik Gmbh | Method for regulating the delivery rate of a rotor of a separating device of a stirred ball mill and agitator ball mill for comminuting material to be ground |
DE102015101476A1 (en) | 2015-02-02 | 2016-08-04 | Netzsch-Feinmahltechnik Gmbh | PULLER BALL MILL AND GRINDING DISK FOR EMPTY BALL MILLS |
CN205323895U (en) * | 2016-02-01 | 2016-06-22 | 南雄市星辉化工新材料有限公司 | Sand grinding machine |
-
2016
- 2016-10-18 EP EP16194369.1A patent/EP3311922B1/en active Active
- 2016-10-18 ES ES16194369T patent/ES2713001T3/en active Active
- 2016-10-18 PL PL16194369T patent/PL3311922T3/en unknown
- 2016-10-18 DK DK16194369.1T patent/DK3311922T3/en active
-
2017
- 2017-09-27 MY MYPI2017703643A patent/MY188730A/en unknown
- 2017-10-12 CN CN201710945790.4A patent/CN107952529B/en active Active
- 2017-10-13 US US15/783,431 patent/US10792665B2/en active Active
- 2017-10-16 KR KR1020170133970A patent/KR102501892B1/en active IP Right Grant
- 2017-10-18 JP JP2017201897A patent/JP2018108573A/en active Pending
-
2018
- 2018-06-11 HK HK18107541.9A patent/HK1248173A1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2178642A1 (en) | 2007-08-17 | 2010-04-28 | Bühler Ag | Stirrer mill |
CH700446A1 (en) * | 2009-02-24 | 2010-08-31 | Bachofen Willy A Ag | Stirred ball. |
CN202570278U (en) * | 2012-03-13 | 2012-12-05 | 资阳赛特化工有限公司 | Coating horizontal type sand mill |
DE102013111762A1 (en) * | 2013-07-08 | 2015-01-08 | Netzsch-Feinmahltechnik Gmbh | Agitator ball mill with axial channels |
EP2905080A1 (en) * | 2014-02-07 | 2015-08-12 | Willy A. Bachofen AG | Agitator ball mill |
Also Published As
Publication number | Publication date |
---|---|
MY188730A (en) | 2021-12-26 |
HK1248173A1 (en) | 2018-10-12 |
EP3311922B1 (en) | 2018-12-05 |
CN107952529B (en) | 2020-06-05 |
US10792665B2 (en) | 2020-10-06 |
CN107952529A (en) | 2018-04-24 |
KR20180042806A (en) | 2018-04-26 |
US20180104699A1 (en) | 2018-04-19 |
DK3311922T3 (en) | 2019-03-18 |
PL3311922T3 (en) | 2019-05-31 |
JP2018108573A (en) | 2018-07-12 |
KR102501892B1 (en) | 2023-02-20 |
ES2713001T3 (en) | 2019-05-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3311922B1 (en) | Agitator ball mill | |
DE4447321C2 (en) | Agitator mill for wet comminution, with separator to retain grinding beads | |
EP1468739B1 (en) | Agitator ball mill | |
EP2178642B1 (en) | Stirrer mill | |
EP2178643B1 (en) | Stirrer mill | |
DE4128074C2 (en) | Agitator ball mill | |
DE2458841A1 (en) | RUHRWERKSMÜHLE | |
EP0376001B1 (en) | Agitator mill with a separating device in a rotating cage | |
EP1724022B1 (en) | Stirring mill | |
EP3102332B1 (en) | Agitator ball mill | |
EP3573762B1 (en) | Stirring mill | |
CH620841A5 (en) | ||
CH709952B1 (en) | Media agitator pulverizer. | |
DE10011579B4 (en) | agitating mill | |
EP0638365B1 (en) | Method and device for separating fine-grained solids into two grain size fractions | |
WO2004020098A1 (en) | Ball mill provided with an agitator | |
DE10064828B4 (en) | agitating mill | |
AT253337B (en) | Device for the continuous grinding and dispersing of solids in liquids | |
DE3726610A1 (en) | Grinding-body separating system in agitator ball mills | |
EP0448100A1 (en) | Stirring mill | |
EP0645179A1 (en) | Grinding mill and its use | |
WO2021063995A1 (en) | Stirrer mill | |
DE4216939C2 (en) | Agitator mill with dynamic grinding media separation | |
DE4010926A1 (en) | Mill using grinder bodies - has rotary centrifuging funnel widening in discharge direction of bodies | |
EP1724021A1 (en) | Agitator mill |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20170503 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20180507 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1072389 Country of ref document: AT Kind code of ref document: T Effective date: 20181215 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502016002692 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: BOHEST AG, CH |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 Effective date: 20190311 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: FP |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190305 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190305 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2713001 Country of ref document: ES Kind code of ref document: T3 Effective date: 20190517 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190306 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190405 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190405 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502016002692 Country of ref document: DE |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20190906 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20191018 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20191031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20191031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20191018 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20161018 Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181205 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 1072389 Country of ref document: AT Kind code of ref document: T Effective date: 20211018 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20211018 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230503 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20230912 Year of fee payment: 8 Ref country code: CZ Payment date: 20230816 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: PL Payment date: 20230830 Year of fee payment: 8 Ref country code: NL Payment date: 20231013 Year of fee payment: 8 Ref country code: FR Payment date: 20230926 Year of fee payment: 8 Ref country code: DK Payment date: 20230926 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20231102 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20231005 Year of fee payment: 8 Ref country code: DE Payment date: 20230915 Year of fee payment: 8 Ref country code: CH Payment date: 20231102 Year of fee payment: 8 |