EP0146852B1 - Rührwerksmühle - Google Patents

Rührwerksmühle Download PDF

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Publication number
EP0146852B1
EP0146852B1 EP84114919A EP84114919A EP0146852B1 EP 0146852 B1 EP0146852 B1 EP 0146852B1 EP 84114919 A EP84114919 A EP 84114919A EP 84114919 A EP84114919 A EP 84114919A EP 0146852 B1 EP0146852 B1 EP 0146852B1
Authority
EP
European Patent Office
Prior art keywords
agitator
cavity
grinding
shaft
separating means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84114919A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0146852A1 (de
Inventor
Giacomo Dr. Canepa
Klaus Ott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Erich Netzsch GmbH and Co Holding KG
Original Assignee
Erich Netzsch GmbH and Co Holding KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6217219&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0146852(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Erich Netzsch GmbH and Co Holding KG filed Critical Erich Netzsch GmbH and Co Holding KG
Publication of EP0146852A1 publication Critical patent/EP0146852A1/de
Application granted granted Critical
Publication of EP0146852B1 publication Critical patent/EP0146852B1/de
Expired legal-status Critical Current

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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
    • 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

Definitions

  • the separating device In a known agitator mill of this type (SU-A-737004), which is designed as a vertical agitator mill with a vertical agitator shaft, the separating device consists of a cylindrical screen basket which is arranged as an upper extension of the grinding chamber around the agitator shaft.
  • the bottom of the grinding bowl is bowl-shaped and has its deepest area immediately below the open inner shaft end. Grinding bodies that settle in this area are carried upwards into the cavity of the agitator shaft by a flow that forms during operation, pass through the recesses, which are arranged radially, back into the grinding area and are activated by bowl-shaped agitating elements that surround the device the cutouts are arranged on the agitator shaft.
  • an uppermost stirring element in the form of an inverted bowl is arranged in order to guide grinding media downward from the upper region of the grinding chamber. Due to the general, bottom-up flow of regrind, this top stirring element cannot prevent the sieve basket from being constantly hit by grinding media that have been activated directly by the stirrer shaft or by the top stirring element and therefore impact the sieve basket with great kinetic energy , so that it wears out quickly.
  • the invention is therefore based on the object of designing an agitator mill in such a way that its separating device is largely removed from the impact of grinding bodies activated directly by the agitator shaft and nevertheless does not tend to clog.
  • the object is achieved according to the invention in an agitator mill of the type described in the introduction in that the separating device is arranged at least essentially within the cavity.
  • the invention has the advantage that the separating device, whatever it may be in the individual, is protected within the cavity open at the end in the end section of the agitator shaft, so that grinding media activated directly by the agitator shaft have hardly any possibility of impacting the separating device . Nevertheless, the risk of the separating device becoming clogged is avoided by the rotation of the agitator shaft.
  • At least one conveying element is preferably formed on the agitator shaft, which promotes an axial flow of grinding media and grinding stock from the inner shaft end through the cavity to the recesses.
  • the conveying element can be formed by the wall of the cavity itself, for example in that the cavity widens conically away from the inner shaft end.
  • the separating device is preferably arranged at least approximately coaxially with the agitator shaft. Depending on the position of the agitator shaft in the room and on the type and nature of the material to be ground, it may also be expedient if the separating device is arranged parallel or at an angle to the axis of the agitator shaft.
  • the separating device can be arranged on a tube which extends through part of the grinding chamber from the inner shaft end into the cavity.
  • the separating device can be installed and removed particularly easily together with the tube.
  • the pipe is expediently guided to be pulled outward in a pipe socket which extends from an end wall of the grinding container into the cavity.
  • the tube is guided to be pulled outwards in a sleeve which is arranged on an end wall of the grinding container and is adjustable between a normal operating position, in which it is arranged essentially outside the grinding chamber, and a position for exchanging the Separating device in which the sleeve protrudes into the cavity and seals off the agitator shaft in a manner that restricts the grinding media.
  • the separating device is connected through the generally hollow stirring shaft to the regrind outlet, which is arranged at an outer shaft end.
  • the separating device can have a tubular sieve cartridge.
  • the separating device can be fastened to the agitator shaft and circulate with it.
  • the separation device has two per se Known, coaxial with the agitator shaft, forming an annular gap on separating disks, one of which is rotatable and the other is arranged in a fixed position.
  • the lying agitator mill shown in FIGS. 1 to 3 has a box-shaped frame 10 on which a substantially cylindrical grinding container 12 and axially next to this a bearing housing 14 are fastened.
  • the frame 10 contains a drive motor, not shown, and is connected to the bearing housing 14 by a gear housing 16, in which a gear, also not shown, with an adjustable transmission ratio is arranged.
  • the grinding container 12 contains a circular cylindrical grinding chamber 18 in which an agitator 20 is arranged.
  • the agitator 20 consists essentially of an agitator shaft 22 which is mounted in the bearing housing 14 and extends coaxially with the grinding container 12 through almost the entire grinding chamber 18, and a number of rod-shaped stirring elements 24 which are attached to the agitator shaft 22 at equal axial intervals and protrude into spaces between counter-bars 26 attached to the grinding container 12.
  • a grinding material inlet 28 through which a suspension or slurry of grinding material and liquid is continuously pumped into the grinding chamber 18 during operation.
  • a grinding material outlet 30 is arranged, through which the finished grinding material is continuously pumped out.
  • the regrind outlet 30 is formed by a threaded connector at the end of a tube 32 to which a flange 34 is attached.
  • the flange 34 is screwed to a cover which forms an end wall 36 of the grinding container 12 facing away from the gear housing 16.
  • the tube 32 extends - coaxially with the stirring shaft 22 in the example shown - through the end wall 36 and the adjacent area of the grinding chamber 18 to an end section 38 of the stirring shaft 22.
  • the end section 38 is detachably screwed to the main part of the stirring shaft 22 and points a cavity 40 open at the end or end, in which a separating device 42 is arranged.
  • the separating device 42 is formed by a cylindrical sieve cartridge which has the same diameter as the tube 32 and consists of one piece with it.
  • the separator 42 extends coaxially with the agitator shaft 22 over the greater part of the length of the cavity 40 and has a closed end 44, the distance from the axially inner end of the cavity 40 as well as the radial width of the annular space between the cylindrical part of the filter cartridge and Inner wall of the end portion 38 corresponds to approximately 15 to 20% of the diameter of the cavity 40.
  • slot-shaped, axially parallel recesses 46 are machined, each of which has an annular sector-shaped cross section and extend over the greater part of the length of the cavity 40, so that the filter cartridge 42 is enclosed by these recesses almost over its entire length.
  • the recesses 46 extend in the shape of an annular sector over an angular range of 45 ° in each case and allow webs 48 of the same cross-section to stand between them, so that the end section 38 as a whole resembles a cylindrical cage which is open at one end face.
  • Three of the rod-shaped stirring elements 24 are fastened to each of the webs 48, so that the end section 38 is completely comparable with the main part of the stirring shaft 22 with regard to the fitting with stirring elements.
  • the agitator shaft 22 rotates, depending on its diameter and the nature of the material to be ground, at a speed which is customary in agitator mills in the order of magnitude of, for example, 200 to 3000 revolutions per minute, as a result of which the mixture of grinding media 50 and material to be ground 52 contained in the grinding chamber 18 is activated becomes.
  • a vacuum is generated in the tube 32 by a pump device, not shown, which allows the grinding media 50 and grinding stock 52 to flow from the grinding chamber 18 into the cavity 40.
  • the finished grinding material passes through the sieve cartridge 42 into the tube 32, while the grinding media 50 are retained and flow back into the grinding chamber 18 through the cutouts 46. This backflow. Mung is promoted by centrifugal forces resulting from the action of the webs 48 and the stirring elements 24 attached to them on the grinding media 50.
  • FIG. 4 shows a simplified axial section of an embodiment in which the separating device 42 is also designed as a sieve cartridge and is arranged in the cavity 40 of the end section 38 of the stirring shaft 22.
  • the separating device 42 is fastened to the end of a tube 54 which extends through the bearing housing 14 (FIG. 1) within the overall hollow stirrer shaft 22 and is connected there to a regrind outlet which is the regrind outlet 30 shown in FIGS. 1 and 3 replaced.
  • FIGS. 5 and 6 are comparable in their overall arrangement with FIG. 2; here too, the separating device 42 is arranged on a tube 32 which extends through part of the grinding chamber 18. However, the separating device 42 is formed by two annular cutting disks 56 and 58 which are arranged coaxially with the agitator shaft 22
  • the cutting disc 56 is attached to the agitator shaft 22 and rotates with it; the cutting disc 58 is attached to the tube 32 and is therefore stationary.
  • Fig. 7 shows a modification which differs from Fig. 5 and 6 in that the two cutting discs 56 and 58 are approximately the same size and axially opposed to each other, so that they form a substantially flat, radial annular gap 60.
  • the cutting discs 56 and 58 could also be conical and delimit a conical annular gap between them.
  • FIG. 8 and 9 show two further embodiments in which the separating device 42, which is likewise formed by two separating disks 56 and 58 and is arranged in the cavity 40, has no component rotating with the agitator shaft 22.
  • the rotatable cutting disc 56 is fastened to a shaft 62 which is arranged coaxially within the tube 32 with the agitator shaft 22 and can be driven by its own motor 64 which is flanged to the end wall 36.
  • the stationary cutting disc 58 is in each case attached to the tube 32, as shown in FIG. 8 radially outside the rotating disc 56; 9, however, axially next to this.
  • a conveying element 66 is arranged around the separating device 42, which is again formed here by a sieve cartridge, which has the shape of a spiral and is fastened within the cavity 40 to the end section 38 of the agitator shaft 22.
  • the conveying element 66 is coiled in such a way that it conveys grinding media 50 and regrind 52 within the cavity 40 from its open end, ie to the left in FIG. 10, when the agitator shaft 22 is driven in its operating direction of rotation.
  • the sieve cartridge which forms the separating device 42, is flowed around substantially uniformly by grinding media 50 and grinding stock 52.
  • the inner wall of the hollow end portion 38 widens in a truncated cone shape away from the open end of the cavity 40.
  • this design has the effect that the centrifugal forces acting on the grinding body 50 and the material to be ground 52 generate propulsive forces in the direction of the expansion of the cavity 40, that is to say away from its open end.
  • the inner wall of the end section 38 thus itself forms a conveying element 66.
  • the separating device 42 which in turn is formed by a sieve cartridge, expands in a manner corresponding to the cavity 40, but only to a diameter which is somewhat smaller than the smallest inner diameter of the cavity 40, so that as in all other embodiments, the separating device 42 can be pulled axially out of the end section 38 and replaced.
  • the conveyor elements 66 shown in FIGS. 10 and 11 can be combined with one another.
  • a pipe socket 68 is arranged on the end wall 36 or a comparable end part of the grinding container 12 according to FIG Screening cartridge trained separator 42 is pulled out.
  • the pipe socket 68 projects into an extension 70 of the cavity 40, but ends at or shortly before the start of the recesses 46, so that it does not hinder the flow of grinding media 50 and regrind 52 through the cavity 40 and the recesses 46 during normal operation .
  • a sleeve 72 can be provided according to FIGS. 13 and 14, which is axially adjustably guided on the end wall 36 and / or a holder 74 fastened to it.
  • 13 shows the normal operating position, in which the sleeve 72 does not protrude into the grinding chamber 18 or only protrudes slightly.
  • the sleeve 72 can be moved into a position in which it engages in a recess 76 in the end section 38, as a result of which the interior of the sleeve 72 is completely sealed off from the surrounding cavity 40 and from the grinding chamber 18. In this position, the sleeve 72 can be fastened so that the separating device 42 can be replaced while the agitator shaft 22 is running, without grinding media 50 or grinding stock 52 being able to flow out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP84114919A 1983-12-16 1984-12-07 Rührwerksmühle Expired EP0146852B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833345680 DE3345680A1 (de) 1983-12-16 1983-12-16 Ruehrwerksmuehle
DE3345680 1983-12-16

Publications (2)

Publication Number Publication Date
EP0146852A1 EP0146852A1 (de) 1985-07-03
EP0146852B1 true EP0146852B1 (de) 1987-03-04

Family

ID=6217219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84114919A Expired EP0146852B1 (de) 1983-12-16 1984-12-07 Rührwerksmühle

Country Status (5)

Country Link
US (1) US4620673A (nl)
EP (1) EP0146852B1 (nl)
JP (1) JPS61500715A (nl)
DE (3) DE3345680A1 (nl)
WO (1) WO1985002559A1 (nl)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0206207A2 (de) * 1985-06-18 1986-12-30 Erich Netzsch GmbH & Co. Holding KG Rührwerksmühle
EP0260604A2 (de) * 1986-09-15 1988-03-23 Erich Netzsch GmbH & Co. Holding KG Rührwerksmühle
DE3716587C1 (de) * 1987-05-18 1988-04-28 Draiswerke Gmbh Ruehrwerksmuehle
EP0304062A2 (de) * 1987-08-20 1989-02-22 Erich Netzsch GmbH & Co. Holding KG Rührwerksmühle mit Zuführrohr für Mahlkörper
DE3844380C1 (en) * 1988-12-30 1990-01-18 Erich Netzsch Gmbh & Co Holding Kg, 8672 Selb, De Agitator mill with separating device in a rotating cage
EP0376001A1 (de) * 1988-12-30 1990-07-04 Erich Netzsch GmbH & Co. Holding KG Rührwerksmühle mit Trennvorrichtung in einem rotierenden Käfig
DE4009092C1 (nl) * 1990-03-21 1991-05-23 Erich Netzsch Gmbh & Co Holding Kg, 8672 Selb, De
EP0504836A1 (de) * 1991-03-21 1992-09-23 Erich Netzsch GmbH & Co. Holding KG Rührwerksmühle
DE4240779C1 (de) * 1992-12-04 1994-02-10 Netzsch Erich Holding Rührwerksmühle
DE4432200C1 (de) * 1994-09-09 1996-02-29 Evv Vermoegensverwaltungs Gmbh Rührwerksmühle
EP0700723A1 (de) 1994-09-09 1996-03-13 EVV-Vermögensverwaltungs-GmbH Rührwerksmühle

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3345680A1 (de) * 1983-12-16 1985-06-20 Gebrüder Netzsch, Maschinenfabrik GmbH & Co, 8672 Selb Ruehrwerksmuehle
DE3437866A1 (de) * 1984-10-16 1986-04-17 Basf Farben + Fasern Ag, 2000 Hamburg Dispergierverfahren und ruehrwerksmuehle zu seiner durchfuehrung
DE3927076A1 (de) * 1988-08-26 1990-03-08 Netzsch Erich Holding Ruehrwerksmuehle
DE4002613A1 (de) * 1990-01-30 1991-08-01 Draiswerke Gmbh Ruehrwerksmuehle
DE4025987C2 (de) * 1990-08-16 1998-04-09 Buehler Ag Rührwerksmühle
DE4029139A1 (de) * 1990-09-13 1992-03-19 Netzsch Erich Holding Ruehrwerksmuehle
ES2030619A6 (es) * 1990-10-31 1992-11-01 Oliver & Battle Sa Separador de cuerpos moledores en molinos para triturar y desaglomerar solidos predispersados en liquidos.
ES2031788A6 (es) * 1991-06-27 1992-12-16 Oliver & Battle Sa Mejoras en el objeto de la patente principal n{ 9002767 por separador de cuerpos moledores, en molinos para triturar y desaglomerar solidos predispersados en liquidos.
DE4122680C2 (de) * 1991-07-09 1994-03-31 Draiswerke Gmbh Rührwerksmühle
JPH07106310B2 (ja) * 1991-12-13 1995-11-15 株式会社井上製作所 媒体分散機
US5333804A (en) * 1993-08-20 1994-08-02 Premier Mill Corp. Agitator mill
DE4402609C2 (de) * 1994-01-28 1997-05-07 Hosokawa Alpine Ag Rührwerkskugelmühle
DE19510807C2 (de) * 1994-03-24 1997-04-17 Netzsch Erich Holding Rührwerksmühle
DE4448043B4 (de) * 1994-04-11 2007-12-13 Erich Netzsch Gmbh & Co Holding Kg Rührwerksmühle
DE4432154A1 (de) * 1994-09-09 1996-03-14 Evv Vermoegensverwaltungs Gmbh Verfahren und Vorrichtung zum kontinuierlichen Aufschließen von organischen Bestandteilen eines fließfähigen Behandlungsguts
DE4432153A1 (de) * 1994-09-09 1996-03-14 Evv Vermoegensverwaltungs Gmbh Verfahren und Vorrichtung zum kontinuierlichen autogenen Mahlen eines fließfähigen Behandlungsguts
US5820040A (en) * 1995-12-19 1998-10-13 Hockmeyer Equipment Corp. Basket media mill with stirring rods and counterpart stators
DE19638354A1 (de) * 1996-09-19 1998-03-26 Draiswerke Inc Mahwah Rührwerksmühle
ES2195251T3 (es) * 1997-10-28 2003-12-01 Draiswerke Gmbh Molino con mecanismo agitador.
DE19819967B4 (de) * 1998-05-05 2007-04-26 BüHLER GMBH Rührwerksmühle
JP2000171931A (ja) 1998-09-30 2000-06-23 Fuji Photo Film Co Ltd 写真用固体微粒子分散物、その製造方法、及びそれを含有するハロゲン化銀写真感光材料
DE29819508U1 (de) 1998-11-02 1999-01-14 VMA-GETZMANN GmbH, 51580 Reichshof Dispergiervorrichtung
US6428591B1 (en) 2000-09-01 2002-08-06 Fluid-Quip, Inc. Pressurized cyclone including agitator assembly
DE10064828B4 (de) * 2000-12-22 2007-07-12 Erich Netzsch Gmbh & Co Holding Kg Rührwerksmühle
EP1392441B1 (en) * 2001-06-05 2008-07-23 Elan Pharma International Limited System and method for milling materials
US6976647B2 (en) * 2001-06-05 2005-12-20 Elan Pharma International, Limited System and method for milling materials
US20040176477A1 (en) * 2003-03-06 2004-09-09 The Procter & Gamble Company Chitosan powder
JP2006212489A (ja) * 2005-02-01 2006-08-17 Ashizawa Finetech Ltd 媒体攪拌型粉砕装置を用いる粉砕方法
JP2006212488A (ja) * 2005-02-01 2006-08-17 Ashizawa Finetech Ltd 媒体攪拌型粉砕装置
WO2006131698A2 (en) * 2005-06-08 2006-12-14 Cheshire Dispersion Company Limited Milling apparatus
US7571871B2 (en) * 2005-11-04 2009-08-11 Rutgers, The State University Of New Jersey Uniform shear application system and methods relating thereto
JP4953805B2 (ja) * 2006-12-28 2012-06-13 アシザワ・ファインテック株式会社 媒体攪拌型粉砕装置
US7559493B1 (en) 2007-08-27 2009-07-14 Hockmeyer Equipment Corp. Deterring wear at a bearing construct in a basket media mill
WO2010003990A1 (en) * 2008-07-10 2010-01-14 Frewitt Fabrique De Machines S.A. Bead mill with separator
RU2523078C2 (ru) * 2008-12-19 2014-07-20 Экстрейта Текнолоджи Пти Лтд Дисковая мельница
CH700446A1 (de) 2009-02-24 2010-08-31 Bachofen Willy A Ag Rührwerkskugelmühle.
EP2246113A1 (en) * 2009-04-29 2010-11-03 Sandvik Intellectual Property AB Process for milling cermet or cemented carbide powder mixtures
CA2912729A1 (en) 2013-05-21 2014-11-27 Flsmidth A/S Methods and apparatus for the continuous monitoring of wear in grinding circuits
JP5404955B1 (ja) 2013-06-03 2014-02-05 アシザワ・ファインテック株式会社 媒体攪拌型粉砕機
DE102013111762A1 (de) * 2013-07-08 2015-01-08 Netzsch-Feinmahltechnik Gmbh Rührwerkskugelmühle mit Axialkanälen
EP3283204B1 (de) 2015-04-17 2020-12-23 Bühler AG Vorrichtung und verfahren zum mischen, insbesondere zum dispergieren
EP3536406A1 (de) * 2018-03-07 2019-09-11 Bühler AG Rührwerksmühle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH477229A (de) * 1967-03-21 1969-08-31 Vyzk Ustav Organ Syntez Vorrichtung zum Dispergieren von Suspensionen fester Teilchen auf kolloidale Feinheit
DE2037258C3 (de) * 1970-07-28 1974-10-17 Draiswerke Gmbh, 6800 Mannheim Geschlossene Rührwerksmühle
DE2110336A1 (de) * 1971-03-04 1972-09-07 Draiswerke Gmbh Ruehrwerksmuehle
CH564373A5 (nl) * 1973-09-28 1975-07-31 Bicik Vladislav
DE2626757C2 (de) * 1975-07-09 1984-03-15 Meyer AG Zuchwil, Zuchwil Rührwerkmühle, insbesondere Kolloidmühle
SU737004A2 (ru) * 1978-03-01 1980-05-30 Среднеазиатский Филиал Специального Конструкторского Бюро Внпо "Союзгазавтоматика" Бисерна мельница
JPS5836242A (ja) * 1981-08-21 1983-03-03 津田駒工業株式会社 空気噴射式織機におけるサブノズルの噴射タイミング制御方法と装置
DE3245825C2 (de) * 1982-12-10 1994-01-27 Buehler Ag Geb Rührwerksmühle
DE3345680A1 (de) * 1983-12-16 1985-06-20 Gebrüder Netzsch, Maschinenfabrik GmbH & Co, 8672 Selb Ruehrwerksmuehle

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0206207A2 (de) * 1985-06-18 1986-12-30 Erich Netzsch GmbH & Co. Holding KG Rührwerksmühle
EP0206207A3 (en) * 1985-06-18 1987-11-25 Gebruder Netzsch Maschinenfabrik Gmbh & Co Agitator mill
EP0260604A2 (de) * 1986-09-15 1988-03-23 Erich Netzsch GmbH & Co. Holding KG Rührwerksmühle
EP0260604A3 (en) * 1986-09-15 1989-02-22 Erich Netzsch Gmbh & Co. Holding Kg Agitator mill
DE3716587C1 (de) * 1987-05-18 1988-04-28 Draiswerke Gmbh Ruehrwerksmuehle
WO1988009212A1 (en) * 1987-05-18 1988-12-01 Draiswerke Gmbh Stirring mill
US5062577A (en) * 1987-05-18 1991-11-05 Draiswerke Gmbh Agitator mill
AU616412B2 (en) * 1987-05-18 1991-10-31 Buhler Gmbh Stirring mill
EP0304062A2 (de) * 1987-08-20 1989-02-22 Erich Netzsch GmbH & Co. Holding KG Rührwerksmühle mit Zuführrohr für Mahlkörper
EP0304062A3 (de) * 1987-08-20 1990-01-10 Erich Netzsch GmbH & Co. Holding KG Rührwerksmühle mit Zuführrohr für Mahlkörper
WO1990007378A1 (de) * 1988-12-30 1990-07-12 Erich Netzsch Gmbh & Co. Holding Kg Rührwerksmühle mit trennvorrichtung in einem rotierenden käfig
EP0376001A1 (de) * 1988-12-30 1990-07-04 Erich Netzsch GmbH & Co. Holding KG Rührwerksmühle mit Trennvorrichtung in einem rotierenden Käfig
DE3844380C1 (en) * 1988-12-30 1990-01-18 Erich Netzsch Gmbh & Co Holding Kg, 8672 Selb, De Agitator mill with separating device in a rotating cage
DE4009092C1 (nl) * 1990-03-21 1991-05-23 Erich Netzsch Gmbh & Co Holding Kg, 8672 Selb, De
EP0504836A1 (de) * 1991-03-21 1992-09-23 Erich Netzsch GmbH & Co. Holding KG Rührwerksmühle
DE4109332A1 (de) * 1991-03-21 1992-09-24 Netzsch Erich Holding Ruehrwerksmuehle
DE4240779C1 (de) * 1992-12-04 1994-02-10 Netzsch Erich Holding Rührwerksmühle
DE4432200C1 (de) * 1994-09-09 1996-02-29 Evv Vermoegensverwaltungs Gmbh Rührwerksmühle
EP0700723A1 (de) 1994-09-09 1996-03-13 EVV-Vermögensverwaltungs-GmbH Rührwerksmühle
US5566896A (en) * 1994-09-09 1996-10-22 Evv-Vermogensverwaltungs-Gmbh Agitator mill
US5624080A (en) * 1994-09-09 1997-04-29 Evv-Vermogensverwaltungs-Gmbh Agitator mill

Also Published As

Publication number Publication date
JPH0210699B2 (nl) 1990-03-09
DE3345680A1 (de) 1985-06-20
DE3521668C2 (nl) 1994-07-28
DE3462438D1 (en) 1987-04-09
DE3345680C2 (nl) 1988-03-10
US4620673A (en) 1986-11-04
DE3521668A1 (de) 1986-12-18
WO1985002559A1 (en) 1985-06-20
JPS61500715A (ja) 1986-04-17
EP0146852A1 (de) 1985-07-03
DE3521668C3 (de) 1994-07-28

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