EP2272591B1 - Broyeur à billes à agitateur - Google Patents

Broyeur à billes à agitateur Download PDF

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Publication number
EP2272591B1
EP2272591B1 EP09164693.5A EP09164693A EP2272591B1 EP 2272591 B1 EP2272591 B1 EP 2272591B1 EP 09164693 A EP09164693 A EP 09164693A EP 2272591 B1 EP2272591 B1 EP 2272591B1
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EP
European Patent Office
Prior art keywords
grinding chamber
ground
grinding
dispersed
gas exhaust
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.)
Active
Application number
EP09164693.5A
Other languages
German (de)
English (en)
Other versions
EP2272591A1 (fr
Inventor
Frank Ronald Dr. Lang
Marc Weider
Erich Jeker
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.)
Willy A Bachofen AG
Original Assignee
Willy A Bachofen AG
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
Priority to EP09164693.5A priority Critical patent/EP2272591B1/fr
Application filed by Willy A Bachofen AG filed Critical Willy A Bachofen AG
Priority to DK09164693.5T priority patent/DK2272591T3/da
Priority to PL09164693T priority patent/PL2272591T3/pl
Priority to ES09164693T priority patent/ES2432617T3/es
Priority to US12/828,173 priority patent/US8118247B2/en
Priority to KR1020100064635A priority patent/KR101667820B1/ko
Priority to CN2010102186416A priority patent/CN101890388B/zh
Priority to JP2010154211A priority patent/JP5763307B2/ja
Publication of EP2272591A1 publication Critical patent/EP2272591A1/fr
Application granted granted Critical
Publication of EP2272591B1 publication Critical patent/EP2272591B1/fr
Active 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
    • B02C13/06—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor
    • 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
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating

Definitions

  • the invention relates to a stirred ball mill according to the preamble of the independent claims 1 and 2.
  • Agitated ball mills are used, for example, for comminuting or dispersing solids in a liquid phase, in particular for products from nanotechnology, but also, for example, for dye suspensions, coating colors, printing inks, agrochemicals, filler suspensions, cosmetics, foodstuffs, pharmaceuticals or microorganisms.
  • the material to be ground or dispersed in a liquid is introduced into the grinding chamber through the inlet arranged at one end of a grinding chamber and is ground or dispersed therein.
  • the material is thereby successively moved through the grinding chamber, whereupon the ground or dispersed material is passed through a separating member, e.g. can be removed through a dynamic separation gap or through a slotted screen, and then through an outlet arranged at the inlet end.
  • a separating member e.g. can be removed through a dynamic separation gap or through a slotted screen
  • the material to be ground or to be dispersed is pumped from a container into the agitator ball mill and back into the same container until the desired fineness of the ground or dispersed product (product) is reached.
  • the basic operation of such stirred ball mills is known and, for example, in the EP 0 627 262 or the DE 2 215 790 described.
  • the WO-A-03/004168 discloses a stirred ball mill with a valve through which gas is precipitated together with the ground product from the grinding chamber.
  • this outlet valve the product outlet and the gas outlet form a common channel over their entire length.
  • the centrifugal force generated by the agitator with its stirring elements is used to separate the gaseous components, in particular gas bubbles, from a solid suspension.
  • the solid suspension and the media are flung outward due to their higher density (as compared to the gas bubbles), while the gas bubbles, e.g. Air bubbles, stay in the central area (approximately in the center).
  • This separation effect is basically independent of the type and shape of the stirring elements of the agitator.
  • the grinding chamber Due to the gas outlet in the central region of the grinding chamber at the outlet end of the same, the grinding chamber can be "vented" in this way.
  • the gas outlet may preferably be provided with a sieve in order to prevent a flow of grinding media.
  • the agitator ball mill according to the invention, the agitator on a shaft on which the stirring elements are fixed, and extending in the axial direction extending gas outlet channel through the Wave through.
  • the product outlet for the ground or dispersed material is likewise arranged in the central region of the outlet-side end wall, which comprises a product outlet channel extending in the axial direction through the outlet-side end wall.
  • the product outlet channel and the gas outlet channel are formed as separate outlet channels.
  • the outlet of the gas outlet channel opens into the product outlet channel in front of the outlet of the product outlet channel.
  • a separating element permeable to the ground or dispersed material eg a slotted screen
  • the ground or dispersed material is only in the essential radial direction through the separating element can pass through and then into the product outlet or the product outlet.
  • the grinding media are thereby retained by the separating member, while the milled or dispersed product with the desired specifications (particle size) can flow through the separating member (eg the slotted screen) towards the product outlet.
  • the separating member may be formed as a cylindrical sieve cartridge, wherein the gas outlet passage in the axial direction passes centrally through the interior of the sieve cartridge.
  • the cylindrical screen cartridge can be easily replaced or cleaned, should this be necessary.
  • the agitator ball mill at the inlet of the gas outlet or the gas outlet channel may be arranged a sieve, which is designed so that it retains at least the grinding media in the grinding chamber.
  • the outlet of the gas outlet or the gas outlet channel can be connected to a vacuum tank.
  • the product, which is sucked in by the vacuum, can be separated and fed separately back to the inlet of the agitator ball mill.
  • the type and shape of the stirring elements on the shaft of the agitator can be optimally chosen according to the purpose.
  • the agitator a Have elle are fixedly mounted on the stirring elements as paddle wheels, discs or pins.
  • Fig. 1 is a section (outlet end) of a first embodiment of the inventive agitator ball mill 1 shown, in which a gas outlet channel 140 out through the outlet-side end wall 100 of the grinding chamber 10 out.
  • the separate product outlet or product outlet channel is not shown in this embodiment.
  • stirrers 131 are arranged, which are formed as disks.
  • Fig. 2 is a section (outlet end) of a second embodiment of the inventive agitator ball mill 1a with an axially extending through the shaft 130a of the agitator 13a gas outlet channel 140a.
  • the gas discharge passage 140a is not led out through the discharge side end wall 100a of the grinding chamber 10a, but instead, it is carried out out outwardly in the shaft 130a of the agitator.
  • the stirring members 131a are similar to the embodiment according to FIG Fig. 1 , designed as discs.
  • Fig. 3 is a section (outlet end) of a third embodiment of the inventive agitator ball mill 1b to recognize, with the grinding chamber 10b and with the shaft 130b of the agitator 13b, on which stirrers 131b are arranged in the form of Schaufelradartigen accelerators.
  • the gas outlet channel 140b passes centrally through the interior of a screen cartridge 150b, but is not led out of the grinding chamber 10b as a separate gas outlet channel 140b, but instead opens into the product outlet channel 120b in the region of the outlet end wall 100b.
  • a kind Venturi effect can be achieved, namely by the gaseous components, such as gas bubbles are entrained by the pumped through the Artsauslasskanal 120b solid suspension.
  • Fig. 4 is a section (outlet side end) of a fourth embodiment of the inventive agitator ball mill 1c to recognize, in which in the region of the end of the shaft 130c of the agitator 13c in addition to the blade-like stirrers 131c (accelerators), an additional stirrer 131c on the shaft 130c can be seen.
  • the gas discharge passage 140c is separately led out of the grinding chamber 10c through the sieve cartridge 150c and through the outlet side end wall 100c, thus discharging, unlike the embodiment Fig. 3 - not in the product outlet channel 120c.
  • Fig. 5 is a schematic representation of a fifth embodiment of the inventive agitator ball mill 1d shown with a vacuum container 2, which is connected to the gas outlet channel 140d of the agitator ball mill 1d.
  • the fifth embodiment of the agitator ball mill 1 according to the invention again comprises a cylindrical grinding chamber 10d and an inlet 11 arranged at one end of the grinding chamber 10d for the material to be ground or dispersed, for example a solid suspension. Through the inlet 11, the material to be ground or to be dispersed can be fed to the grinding chamber 10d.
  • the grinding chamber 10d are in operation - - typically spherical - grinding media (not shown), which consist for example of a ceramic or other highly abrasion-resistant material.
  • the agitator 13d rotatable about the chamber axis as a rotation axis 101d is also arranged, on the shaft 130d of which stirring elements 131d are fixedly arranged.
  • the embodiment of the agitator ball mill 1d according to Fig. 5 a product outlet 12 for the ground or dispersed material arranged at the other end (outlet-side end) of the grinding chamber 10d.
  • the product outlet 12 comprises a product outlet channel 120d, which extends through the outlet-side end wall 100d of the grinding chamber 10d and here exemplarily has the shape of a pipe section with a curvature.
  • a gas outlet 14 is provided in the form of a gas outlet channel 140d, which is arranged at the outlet end of the grinding chamber 10d in the central region and is exemplified here as a separate piece of pipe, which is led out of the grinding chamber 10d separated from the pipe section designed as a product outlet 120d.
  • the separation of the ground or dispersed material and the grinding media can also be carried out in other ways, for example with the aid of rotating separation gaps or other suitable methods.
  • agitators 131d are again designed as accelerator-type accelerators in order to convey the grinding bodies and the material to be ground or to be dispersed radially to agitator shaft 130d.
  • paddle wheel-like agitators 131d acts on the grinding media a centrifugal force, which conveys the grinding media radially outward.
  • the outlet of the gas outlet channel 140d which is passed through the outlet-side end wall of the grinding chamber 10d, is here connected to the already mentioned vacuum container 2, which in turn is connected to a vacuum pump 3. So that no grinding media can flow out of the grinding chamber 10d, a sieve can be arranged at the inlet of the gas outlet channel 140d (not shown).
  • the vacuum pump 3 generates a negative pressure in the vacuum container 2, whereby the gaseous components are discharged from the grinding chamber 10d through the gas outlet channel 140d extending centrally through the interior of the screen cartridge 150d in the axial direction.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crushing And Grinding (AREA)

Claims (7)

  1. Broyeur à boulets à agitateur (1c ; 1d) pour le broyage fin ou la dispersion d'un matériau, comprenant une chambre de broyage cylindrique ou conique (10c ; 10d) destinée à recevoir des corps de broyage ainsi qu'à recevoir le matériau à broyer ou à disperser,
    comprenant une entrée (11) pour le matériau à broyer ou à disperser, laquelle est disposée à une extrémité de la chambre de broyage (10c ; 10d),
    comprenant un agitateur (13c ; 13d) qui s'étend en direction axiale dans la chambre de broyage (10c ; 10d) et qui comprend des organes d'agitation (131c ; 131d) pour déplacer les corps de broyage et le matériau à broyer ou à disperser dans la chambre de broyage (10c ; 10d),
    ainsi que comprenant une sortie de produit pour le matériau broyé ou dispersé, laquelle est disposée à l'autre extrémité de la chambre de broyage (10c ; 10d), une sortie de gaz étant disposée à l'extrémité côté sortie de la chambre de broyage (10c ; 10d), dans la zone centrale, à travers laquelle des composants gazeux, mais pas les corps de broyage, peuvent être évacués de la chambre de broyage (10c ; 10d), la sortie de gaz comprenant un canal de sortie de gaz (140c ; 140d) qui s'étend en direction axiale, et le canal de sortie de gaz (140c ; 140d) qui s'étend en direction axiale s'étendant à travers une paroi de fermeture (100c ; 100d) qui est disposée à l'extrémité côté sortie et qui limite la chambre de broyage cylindrique ou conique (10c ; 10d), et la sortie de produit pour le matériau broyé ou dispersé étant également disposée dans la zone centrale de la paroi de fermeture côté sortie (100c ; 100d) et comprenant un canal de sortie de produit (120c ; 120d) qui s'étend en direction axiale à travers la paroi de fermeture côté sortie (100c ; 100d),
    caractérisé en ce que le canal de sortie de produit (120c ; 120d) et le canal de sortie de gaz (140c ; 140d) sont réalisés sous la forme de canaux de sortie séparés l'un de l'autre.
  2. Broyeur à boulets à agitateur (1b) pour le broyage fin ou la dispersion d'un matériau, comprenant une chambre de broyage cylindrique ou conique (10b) destinée à recevoir des corps de broyage ainsi qu'à recevoir le matériau à broyer ou à disperser,
    comprenant une entrée pour le matériau à broyer ou à disperser, laquelle est disposée à une extrémité de la chambre de broyage (10b),
    comprenant un agitateur (13b) qui s'étend en direction axiale dans la chambre de broyage (10b) et qui comprend des organes d'agitation (131b) pour déplacer les corps de broyage et le matériau à broyer ou à disperser dans la chambre de broyage (10b),
    ainsi que comprenant une sortie de produit pour le matériau broyé ou dispersé, laquelle est disposée à l'autre extrémité de la chambre de broyage (10b), une sortie de gaz étant disposée à l'extrémité côté sortie de la chambre de broyage (10b), dans la zone centrale, à travers laquelle des composants gazeux, mais pas les corps de broyage, peuvent être évacués de la chambre de broyage (10b), la sortie de gaz comprenant un canal de sortie de gaz (140b) qui s'étend en direction axiale, et le canal de sortie de gaz (140b) qui s'étend en direction axiale s'étendant à travers une paroi de fermeture (100b) qui est disposée à l'extrémité côté sortie et qui limite la chambre de broyage cylindrique ou conique (10b), et la sortie de produit pour le matériau broyé ou dispersé étant également disposée dans la zone centrale de la paroi de fermeture côté sortie (100b) et comprenant un canal de sortie de produit (120b) qui s'étend en direction axiale à travers la paroi de fermeture côté sortie (100b),
    caractérisé en ce que la sortie du canal de sortie de gaz (140b) débouche dans le canal de sortie de produit (120b) avant la sortie du canal de sortie de produit (120b).
  3. Broyeur à boulets à agitateur selon une des revendications 1 ou 2, dans lequel un organe de séparation (150b ; 150c ; 150d) qui laisse passer le matériau broyé ou dispersé, mais pas les corps de broyage, est disposé avant la sortie de produit ou avant le canal de sortie de produit (120b ; 120c ; 120d), de façon que le matériau broyé ou dispersé puisse passer seulement dans une direction sensiblement radiale à travers l'organe de séparation (150b ;150c ; 150d) et ensuite parvenir dans le canal de sortie de produit (120b ; 120c ; 120d).
  4. Broyeur à boulets à agitateur selon la revendication 3, caractérisé en ce que l'organe de séparation est réalisé sous la forme d'une cartouche de tamisage cylindrique (150b ; 150c ; 150d), et en ce que le canal de sortie de gaz (140b ; 140c ; 140d) s'étend en direction axiale centralement à travers l'intérieur de la cartouche de tamisage (150b ; 150c ; 150d).
  5. Broyeur à boulets à agitateur selon une des revendications précédentes, caractérisé en ce qu'à l'entrée du canal de sortie de gaz (140b ; 140c ; 140d) est disposé un tamis qui est conçu pour retenir au moins les corps de broyage dans la chambre de broyage (10b ; 10c ; 10d).
  6. Broyeur à boulets à agitateur selon une des revendications 1 ou 3-5, caractérisé en ce que la sortie du canal de sortie de gaz (120d) est reliée à un réservoir à vide (2) et/ou à une pompe à vide (3).
  7. Broyeur à boulets à agitateur selon une des revendications précédentes, caractérisé en ce que l'agitateur (13b ; 13c ; 13d) comporte un arbre (130b ; 130c ; 130d) sur lequel sont disposés de manière fixe des roues à aubes, des disques ou des broches faisant fonction d'organes d'agitation (131b ; 131c ; 131d).
EP09164693.5A 2009-07-06 2009-07-06 Broyeur à billes à agitateur Active EP2272591B1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DK09164693.5T DK2272591T3 (da) 2009-07-06 2009-07-06 Kuglemølle med omrører
PL09164693T PL2272591T3 (pl) 2009-07-06 2009-07-06 Młyn kulowy z mieszadłem
ES09164693T ES2432617T3 (es) 2009-07-06 2009-07-06 Molino de bolas con agitador
EP09164693.5A EP2272591B1 (fr) 2009-07-06 2009-07-06 Broyeur à billes à agitateur
US12/828,173 US8118247B2 (en) 2009-07-06 2010-06-30 Agitator ball mill
KR1020100064635A KR101667820B1 (ko) 2009-07-06 2010-07-06 교반기 볼 밀
CN2010102186416A CN101890388B (zh) 2009-07-06 2010-07-06 搅拌式球磨机
JP2010154211A JP5763307B2 (ja) 2009-07-06 2010-07-06 攪拌ボールミル

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09164693.5A EP2272591B1 (fr) 2009-07-06 2009-07-06 Broyeur à billes à agitateur

Publications (2)

Publication Number Publication Date
EP2272591A1 EP2272591A1 (fr) 2011-01-12
EP2272591B1 true EP2272591B1 (fr) 2013-09-11

Family

ID=41258232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09164693.5A Active EP2272591B1 (fr) 2009-07-06 2009-07-06 Broyeur à billes à agitateur

Country Status (8)

Country Link
US (1) US8118247B2 (fr)
EP (1) EP2272591B1 (fr)
JP (1) JP5763307B2 (fr)
KR (1) KR101667820B1 (fr)
CN (1) CN101890388B (fr)
DK (1) DK2272591T3 (fr)
ES (1) ES2432617T3 (fr)
PL (1) PL2272591T3 (fr)

Cited By (1)

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EP2905080A1 (fr) 2014-02-07 2015-08-12 Willy A. Bachofen AG Broyeur à billes à agitateur

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JP4741931B2 (ja) * 2005-05-17 2011-08-10 アシザワ・ファインテック株式会社 循環型メディア撹拌ミル
JP2006346942A (ja) * 2005-06-14 2006-12-28 Refinverse Inc 樹脂粉処理装置及び樹脂粉処理方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2905080A1 (fr) 2014-02-07 2015-08-12 Willy A. Bachofen AG Broyeur à billes à agitateur

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DK2272591T3 (da) 2013-12-16
JP5763307B2 (ja) 2015-08-12
PL2272591T3 (pl) 2014-02-28
US20110000993A1 (en) 2011-01-06
EP2272591A1 (fr) 2011-01-12
JP2011016128A (ja) 2011-01-27
KR20110004313A (ko) 2011-01-13
KR101667820B1 (ko) 2016-10-28
CN101890388B (zh) 2013-02-13
CN101890388A (zh) 2010-11-24
ES2432617T3 (es) 2013-12-04
US8118247B2 (en) 2012-02-21

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