EP2692445A2 - Broyeur à billes à agitateur - Google Patents

Broyeur à billes à agitateur Download PDF

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Publication number
EP2692445A2
EP2692445A2 EP13003736.9A EP13003736A EP2692445A2 EP 2692445 A2 EP2692445 A2 EP 2692445A2 EP 13003736 A EP13003736 A EP 13003736A EP 2692445 A2 EP2692445 A2 EP 2692445A2
Authority
EP
European Patent Office
Prior art keywords
grinding
fluid
ball mill
outlet
agitator
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.)
Withdrawn
Application number
EP13003736.9A
Other languages
German (de)
English (en)
Other versions
EP2692445A3 (fr
Inventor
Udo Enderle
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.)
Netzsch Feinmahltechnik GmbH
Original Assignee
Netzsch Feinmahltechnik GmbH
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
Application filed by Netzsch Feinmahltechnik GmbH filed Critical Netzsch Feinmahltechnik GmbH
Publication of EP2692445A2 publication Critical patent/EP2692445A2/fr
Publication of EP2692445A3 publication Critical patent/EP2692445A3/fr
Withdrawn legal-status Critical Current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
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/186—Adding fluid, other than for crushing by fluid energy
    • 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
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/186—Adding fluid, other than for crushing by fluid energy
    • B02C17/1875—Adding fluid, other than for crushing by fluid energy passing gas through crushing zone
    • B02C17/188—Adding fluid, other than for crushing by fluid energy passing gas through crushing zone characterised by point of gas entry or exit or by gas flow path

Definitions

  • the present invention relates to a stirred ball mill for preferably grinding dry or non-dry substances, and to a method for grinding dry or non-dry substances in a stirred ball mill.
  • the agitator ball mill according to the invention for grinding dry or dry substances is provided with a grinding container.
  • the grinding container is provided with an inlet for the material to be ground and a material outlet, the outlet area being provided with a sieve.
  • a stirrer shaft In the center or in the vicinity of the center of the grinding container runs a stirrer shaft, on which a plurality of grinding elements are arranged.
  • the grinding container is at least partially filled with Mahltosête.
  • the German patent DE 36 42 320 C2 discloses an agitator mill for grinding, in particular for dry milling of pigments, comprising a cylindrical container in which there are grinding bodies and which is provided with an inlet for the material to be ground and an outlet for the ground material.
  • a drivable stirrer is arranged, whose effective surfaces of the inner wall of the container have a smaller distance than the diameter of the grinding media.
  • German Auslegeschrift DE 1 288 890 discloses a method for dry micronizing of solids in a high-speed agitator mill disclosed.
  • the vertically arranged grinding container of the agitator mill is partially filled with grinding media and is traversed by a gas.
  • Mahlgutstrom and also the steadily directly and almost exclusively by the Mahl stresses-Mahlgut-heap directed gas stream are controlled so that the space between the grinding media is filled to 10 to 60% with regrind.
  • the agitator consists of concentric mounted on an agitator shaft flat full discs.
  • the German patent application DE 10 2010 049 827 discloses an agitating ball mill for grinding dry or non-dry substances.
  • This agitator ball mill is equipped with a grinding container.
  • the grinding container is provided with an inlet for the material to be ground, a separate fluid inlet and a material outlet, wherein the outlet region is provided with a sieve.
  • In the center or in the vicinity of the center of the grinding container runs a stirrer shaft, on which a plurality of grinding elements are arranged.
  • the grinding container is at least partially filled with Mahltosêtn.
  • the inlet region of the agitator ball mill is assigned a first cage and the outlet region is assigned a second cage.
  • the invention has for its object to provide a method for economical and reliable grinding of dry or non-dry substances to very fine material to be ground and to optimize the flow of transport media (fluids) in the grinding container
  • the invention has the object to provide a stirred ball mill, dry and dry substances can be used to very fine ground both dry and dry substances can be economically and reliably grinding with the dry and dry substances.
  • a fluid is introduced into a grinding container.
  • the fluid is introduced in close proximity to a last grinding element, which is connected upstream of the outlet of the agitator ball mill.
  • the fluid is introduced between the grinding elements and the last grinding element in the agitator ball mill.
  • the fluid is injected into the grinding container between the last grinding element and the outlet region of the agitator ball mill, blown or sucked.
  • the way in which the fluid is introduced into it changes. If the agitator ball mill, for example, operated with a negative pressure (vacuum), so the fluid is sucked into the mill.
  • the fluid After introduction or injection, the fluid is moved at a speed of 5 to 50 m / s in the grinding container. Preferably, the fluid is moved at a speed between 0 and 5 m / s in the grinding container.
  • the velocity and the way the fluid flows through the grinding container refers to the free cross-sectional area in the grinding container. In the case of a grinding container with many built-in elements / grinding elements, the flow velocity will be higher due to the smaller free cross-sectional area at the same injection velocity than in the case of a grinding container with few internals / grinding elements.
  • the stream of fluid and millbase is conveyed through a separator through the grinding container. The separator is followed by a further separation unit for separating fluid and ground material.
  • the fluid When grinding dry substances, air, inert gases or steam are preferably used as the fluid. To ensure dry grinding, superheated dry steam is used as the fluid.
  • the addition amount and / or the addition frequency of the fluid into the grinding container of the stirred ball mill can be controlled as required.
  • an agitating ball mill for grinding dry or non-dry substances.
  • the agitator ball mill consists of a grinding container which is at least partially filled with grinding media.
  • the grinding container has an inlet for the material to be ground and an outlet for the ground material to be ground.
  • a separation device is arranged in the outlet of the agitator ball mill.
  • a stirrer shaft In the center of the grinding container runs a stirrer shaft, on which several grinding elements are arranged.
  • Through the agitator shaft runs a fluid channel through which a fluid can be introduced into the grinding container.
  • At least one outlet opening for the fluid is associated with the last grinding element, which is arranged in front of the outlet area of the agitator ball mill, in the vicinity of the space.
  • At least one of the outlet openings is designed as a nozzle.
  • At least one outlet opening is arranged between the grinding elements and the last grinding element. In a further embodiment, at least one outlet opening is arranged between the last grinding element and the outlet area. At least one separating unit for separating ground material and fluid is connected downstream of the outlet region and the separating device arranged therein. The at least one separation unit is an air classifier.
  • the Fig. 1 shows an agitator ball mill according to the invention 10.
  • the agitator ball mill 10 consists of a grinding container 16 and a stirring shaft 12. On the stirring shaft 12 a plurality of grinding elements 18 are arranged. At the end of the stirring shaft 12 is a separating device 20, with which the Mahlcous stresses (not shown) and the material to be ground can be separated. The material to be ground is fed via the inlet 24 into the grinding container 16. The milled ground material leaves the grinding container 16 via the outlet 26.
  • the end of the stirring shaft 12 is designed such that the separating device 20 is arranged in the interior of an outlet region 28. Inside the agitator shaft 12 there is a fluid channel 30, via which various fluids 14 can be introduced into the grinding container 16 of the agitator ball mill 10.
  • the fluid 14 leaves the fluid channel 30 via the outlet opening 32, which is designed in a preferred embodiment as a nozzle.
  • the outlet openings 32 are arranged in the vicinity of a last grinding element 19. In the FIG. 1 the outlet openings 32 are arranged between the grinding elements 18 and the last grinding element 19.
  • the mixture of fluid 14 and millbase leaves the agitator ball mill 10 via the outlet 26, which is followed by a separation unit 22. In the separation unit 22, the fluid 14 and the material to be ground are separated from each other.
  • fluids 14 or separators 22 may be employed.
  • fluids 14 are used in the dry grinding air, inert gases or superheated steam.
  • a separation unit 22 comes in the illustrated here FIG. 1 an air classifier is used. The lists made in advance do not constitute a final limitation of the invention.
  • Fig. 2 shows an agitator ball mill 10 according to the invention in which the outlet openings 32 are arranged between the last grinding element 19 and the outlet region 28.
  • the agitator ball mill 10 Through the agitator shaft 12, the agitator ball mill 10, a fluid passage 30 through which the fluid 14 is the outlet openings 32 is fed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP13003736.9A 2012-07-31 2013-07-26 Broyeur à billes à agitateur Withdrawn EP2692445A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012107005.9A DE102012107005A1 (de) 2012-07-31 2012-07-31 Rührwerkskugelmühle

Publications (2)

Publication Number Publication Date
EP2692445A2 true EP2692445A2 (fr) 2014-02-05
EP2692445A3 EP2692445A3 (fr) 2017-06-14

Family

ID=48906081

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13003736.9A Withdrawn EP2692445A3 (fr) 2012-07-31 2013-07-26 Broyeur à billes à agitateur

Country Status (3)

Country Link
EP (1) EP2692445A3 (fr)
CN (1) CN103567028B (fr)
DE (1) DE102012107005A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112808393A (zh) * 2020-12-31 2021-05-18 生态环境部南京环境科学研究所 一种立式连续搅拌球磨设备及其工作方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015105804A1 (de) * 2015-04-16 2016-10-20 Netzsch-Feinmahltechnik Gmbh Rührwerkskugelmühle
CN110385175A (zh) * 2019-07-29 2019-10-29 成都利君实业股份有限公司 一种可连续生产的水泥熟料粉磨实施装备

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1288890B (de) 1964-04-10 1969-02-06 Draiswerke Gmbh Verfahren und Vorrichtung zum trockenen Feinstzerkleinern von Feststoffen
DE3642320A1 (de) 1986-12-11 1988-06-23 Thomson Brandt Gmbh Videorecorder
DE102010049827A1 (de) 2010-10-27 2012-05-03 Netzsch-Feinmahltechnik Gmbh Rührwerkskugelmühle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU594294A2 (ru) * 1974-11-05 1978-02-25 Всесоюзный научно-исследовательский институт по креплению скважин и буровым растворам Бисерна мельница
DE3440993C2 (de) * 1984-11-09 1987-02-26 Omya GmbH, 5000 Köln Rührwerksmühle, insbesondere Rührwerkskugelmühle
FR2650198B1 (fr) * 1989-07-26 1995-02-17 Chauveau Jean Marie Procede et broyeur pour la fabrication d'un produit forme par une suspension de particules solides dans un vehicule gras
DE4432203A1 (de) * 1994-09-09 1996-03-14 Evv Vermoegensverwaltungs Gmbh Rührwerksmühle
JP3165628B2 (ja) * 1995-10-31 2001-05-14 三菱重工業株式会社 横型湿式ミル
JP2001259452A (ja) * 2000-03-16 2001-09-25 Masumi Kusunoki 循環式粉砕システム及び粉砕方法
JP2004188835A (ja) * 2002-12-12 2004-07-08 Chuo Kakoki Kk 木質材の粉砕装置
CN1299829C (zh) * 2004-06-03 2007-02-14 袁运法 球磨机回粉无动力螺旋喂料方法及喂料装置
CN202113904U (zh) * 2011-05-31 2012-01-18 陈波 新型研磨装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1288890B (de) 1964-04-10 1969-02-06 Draiswerke Gmbh Verfahren und Vorrichtung zum trockenen Feinstzerkleinern von Feststoffen
DE3642320A1 (de) 1986-12-11 1988-06-23 Thomson Brandt Gmbh Videorecorder
DE102010049827A1 (de) 2010-10-27 2012-05-03 Netzsch-Feinmahltechnik Gmbh Rührwerkskugelmühle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112808393A (zh) * 2020-12-31 2021-05-18 生态环境部南京环境科学研究所 一种立式连续搅拌球磨设备及其工作方法

Also Published As

Publication number Publication date
EP2692445A3 (fr) 2017-06-14
DE102012107005A1 (de) 2014-05-22
CN103567028A (zh) 2014-02-12
CN103567028B (zh) 2016-10-19

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