EP2886198B1 - Betriebsverfahren für eine Mahlkörpermühle und Mahlkörpermühe dafür - Google Patents

Betriebsverfahren für eine Mahlkörpermühle und Mahlkörpermühe dafür Download PDF

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Publication number
EP2886198B1
EP2886198B1 EP14004298.7A EP14004298A EP2886198B1 EP 2886198 B1 EP2886198 B1 EP 2886198B1 EP 14004298 A EP14004298 A EP 14004298A EP 2886198 B1 EP2886198 B1 EP 2886198B1
Authority
EP
European Patent Office
Prior art keywords
grinding
mill
product outlet
discharge pipe
body mill
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
EP14004298.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2886198A1 (de
Inventor
Lars-Peter Weiland
Roland Nied
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 Trockenmahltechnik GmbH
Original Assignee
Netzsch Trockenmahltechnik GmbH
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Publication date
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Publication of EP2886198A1 publication Critical patent/EP2886198A1/de
Application granted granted Critical
Publication of EP2886198B1 publication Critical patent/EP2886198B1/de
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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
    • B02C17/10—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 one or a few disintegrating members arranged in the container
    • 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
    • B02C17/16—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
    • B02C17/18—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
    • 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

Definitions

  • the present invention relates to a method of operating a media mill such as e.g. an agitator ball mill, according to the preamble of claim 1 and a grinding media mill for carrying out this method of operation according to the preamble of claim 6.
  • a media mill such as e.g. an agitator ball mill
  • An agitator ball mill known from practice which is an example of a grinding mill in general 1 and in the Fig. 2 schematically illustrates in a sectional view, contains a surrounded by a housing 2 grinding chamber 3, is fed into the to be comminuted by a product inlet 4 regrind 5.
  • grinding media 6 and a stirrer 7 are included with a rotor 8, the rotation of which ensures the intensive movement of the grinding media 6, whereby the comminuted material to be comminuted 5 is comminuted.
  • a particular co-rotating separator 9 which serves the separation between on the one hand Mahl Sciencesn 6 and further to be comminuted material 5 and on the other hand finished ground regrind 10 and a product outlet 11 in the housing 2 is connected upstream.
  • the separating device 9 is formed, for example, by a bladed rotor body 12, which rotates together with the rotor 8, and designed and operated so that it or he Mahl stresses 6 is not allowed to let by the separator 9 in particular by the size of the spaces between the Blades 13 of the bladed rotor body 12 and the rotational movement of the bladed rotor body 12 rejects the grinding media 6 and thus prevents it from passing through the separator 9 from the grinding chamber 3 into the product outlet 11.
  • an agitating ball mill having a separation system formed of a separation component having two circular discs coaxial with the chamber axis and between which a plurality of vanes are installed symmetrically about the disc center point and leading inwardly from the disc rim.
  • the rotating transport or vane elements create a back pressure on the mixture of material and media such that the centrifugal force and various specific densities separate the media from the product and transport it to the internal chamber of the mill.
  • the DE 10 2007 043 670 A1 discloses an agitating ball mill having a cylindrical grinding container having at least one Mahlgüteinlass and at least one Mahlgutauslass, wherein in the grinding container is arranged a connected to a drive agitator shaft, which transfers a portion of the drive energy to Mahltos stresses loosely arranged in the grinding container, and one before the Mahlgutauslass arranged separator with a rotor.
  • the aim of the present invention is to improve a grinding media mill in such a way that a grinding media loss at the product outlet is reduced or avoided in a simple manner.
  • This object is achieved according to the invention with an operating method for a grinding media mill according to claim 1 and a grinding media mill according to claim 6.
  • the invention provides an operating method for a grinding mill having a housing surrounding a grinding chamber, are arranged in the grinding medium and set in motion for grinding a material to be ground grinding in motion, and a product inlet and a product outlet contains, between which the millbase to be ground flows through the moving grinding media, being prevented by a product outlet upstream of the separator with a rotor body grinding media in normal operation of the grinding media mill at the exit from the grinding chamber in the product outlet.
  • grinding bodies which have passed through the product outlet through the separating device pass into an upwardly inclined discharge nozzle, from where they are conducted from the discharge nozzle through the product outlet into the rotor body of the separating device during standstill of the grinding media mill and upon renewed operation of the grinding media mill the rotation of the rotor body are transported back into the grinding chamber.
  • the discharge nozzle is inclined relative to the horizontal by 2 ° to 15 °, in particular by 3 ° to 10 ° and particularly preferably by 4 ° to 6 ° upwards.
  • the media mill is an agitator ball mill.
  • the invention also provides a grinding mill with a housing surrounding a grinding chamber, arranged in the grinding body and set in motion for grinding a material to be ground grinding in motion, and contains a product inlet and a product outlet, between which the millbase to be ground through which moving grinding media wherein the product outlet is preceded by a separating device which contains a rotor body which rotates during operation and thereby acts on the grinding media radially outwardly, and is designed to prevent grinding media from exiting the grinding chamber into the product outlet during normal operation of the grinding media mill.
  • the product outlet is followed by a discharge nozzle, which is inclined upwards relative to the horizontal, so that in the discharge nozzle reached Mahl Sciences due to the inclination of the Austragsstutzens relative to the horizontal upwards at a standstill of the MahlSystemmühle from the discharge nozzle through the product outlet are passed into the rotor body and are conveyed on renewed operation of the MahlSystemmühle as a result of the rotation of the rotor body back into the grinding chamber.
  • the discharge nozzle is inclined relative to the horizontal by 2 ° to 15 °, in particular by 3 ° to 10 ° and particularly preferably by 4 ° to 6 ° upwards.
  • the media mill may be an agitator ball mill.
  • the first embodiment of a grinding mill 1 according to the Fig. 1 Contains alike and also in accordance with the grinding mill 1 according to the prior art in the Fig. 2 the grinding chamber 3 surrounded by the housing 2, into which the grinding stock 5 to be comminuted is introduced through the product inlet 4.
  • the grinding media 6 and the agitator 7 are included with the rotor 8, the rotation of which ensures the intensive movement of the grinding media 6, whereby the comminuted material to be comminuted 5 is comminuted.
  • the particular co-rotating separator 9 serves the separation between on the one hand Mahl Sciencesn 6 and further to be comminuted material to be ground 5 and on the other hand finished ground regrind 10 and the product outlet 11 in the housing 2 is connected upstream.
  • the grinding mill 1 according to the Fig. 1 and 2 is an agitating ball mill, which although a particularly preferred application of the invention, but is not limited thereto.
  • the separator 9 is formed in such a stirred ball mill 1, for example, by the bladed rotor body 12 which rotates together with the rotor 8, and designed and operated so that they or he grinding media 6 is not allowed to pass by the separator 9 in particular by the size of the spaces between the blades 13 of the bladed rotor body 12 and the rotational movement of the bladed rotor body 12, the grinding media 6 rejects and thus prevents the passage through the separator 9 from the grinding chamber 3 in the product outlet 11.
  • Such grinding media escaped from the grinding chamber 3 must be removed separately from the finished ground grinding material 10 in the case of grinding body mills 1 according to the state of the art on the one hand, if possible without obstructing a continuous flow of grinding material.
  • grinding media In order to keep the filling of the grinding chamber 3 with grinding media to a predetermined amount in spite of the grinding media losses that occur as a result, on the other hand grinding media must always be refilled, for which complex determinations and monitoring of the corresponding grinding body filling quantity are required. This all adds additional effort in the operation of a grinding mill.
  • the present invention provides a remedy by the product outlet 11, a discharge nozzle 14 is connected downstream, which is inclined relative to the horizontal.
  • This inclination of the discharge nozzle 14 is in the grinding media mill 1 of the first embodiment according to the Fig. 1 up.
  • the discharge nozzle 14 is inclined relative to the horizontal by 2 ° to 15 °, in particular by 3 ° to 10 ° and particularly preferably by 4 ° to 6 ° upwards.
  • the discharge nozzle 14 is inclined upwards or upwards relative to the horizontal, and that the separating device 9 contains the rotor body 12 connected upstream of the product outlet 11, which rotates during operation and thereby acts on the grinding media 6 radially outwards, so that the discharge nozzle 14 arrived grinding media 6 due to the inclination of the discharge nozzle 14 the horizontal upwards at a standstill of the grinding mill 1 from the discharge port 14 are passed through the product outlet 11 in the rotor body 12 and are conveyed on renewed operation of the grinding mill 1 due to the rotation of the rotor body 12 back into the grinding chamber 3.
  • an operating method for a grinding mill mill 1 of the first embodiment according to the Fig. 1 in that the grinding bodies which have passed further through the product outlet 11 through the separating device 9 pass into the upwardly inclined discharge nozzle 14, from where they are conducted from the discharge nozzle 14 through the product outlet 11 into a rotor body 12 of the separating device 9 when the grinding body mill 1 is at a standstill and upon renewed operation of the grinding mill 1 due to the rotation of the rotor body 12 are transported back into the grinding chamber 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP14004298.7A 2013-12-20 2014-12-19 Betriebsverfahren für eine Mahlkörpermühle und Mahlkörpermühe dafür Active EP2886198B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013021756.3A DE102013021756A1 (de) 2013-12-20 2013-12-20 Mahlkörpermühle und Betriebsverfahren dafür

Publications (2)

Publication Number Publication Date
EP2886198A1 EP2886198A1 (de) 2015-06-24
EP2886198B1 true EP2886198B1 (de) 2017-07-05

Family

ID=52349913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14004298.7A Active EP2886198B1 (de) 2013-12-20 2014-12-19 Betriebsverfahren für eine Mahlkörpermühle und Mahlkörpermühe dafür

Country Status (7)

Country Link
US (1) US10279353B2 (zh)
EP (1) EP2886198B1 (zh)
JP (1) JP5963179B2 (zh)
CN (1) CN104815726B (zh)
BR (1) BR102014032287B1 (zh)
DE (1) DE102013021756A1 (zh)
ES (1) ES2642006T3 (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013111762A1 (de) * 2013-07-08 2015-01-08 Netzsch-Feinmahltechnik Gmbh Rührwerkskugelmühle mit Axialkanälen
CN105833984A (zh) * 2016-06-07 2016-08-10 浙江艾领创矿业科技有限公司 一种无筛网分级艾砂磨机
CN106345577A (zh) * 2016-09-20 2017-01-25 派勒（天津）纳米技术有限公司 一种智能型在线出料干式球磨机
DE102018123096B4 (de) * 2018-09-20 2022-01-27 Netzsch Feinmahltechnik Gmbh Rührwerkskugelmühle und Verfahren zum Betreiben einer Rührwerkskugelmühle
CN109967172A (zh) * 2019-04-16 2019-07-05 东莞市琅菱机械有限公司 一种研磨转子及包括该研磨转子的研磨机
CN109967175A (zh) * 2019-04-16 2019-07-05 东莞市琅菱机械有限公司 一种研磨块、研磨转子及包括该研磨转子的研磨机

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2332701A (en) * 1940-06-12 1943-10-26 Charles W Dowsett System and method of grinding
CH564373A5 (zh) * 1973-09-28 1975-07-31 Bicik Vladislav
US4065060A (en) * 1976-10-06 1977-12-27 Aluminum Company Of America Metal flake production
DD153331A1 (de) * 1980-10-02 1982-01-06 Wolfgang Haentzschel Ruehrwerkskugelmuehle
JPS60155937U (ja) * 1984-03-29 1985-10-17 株式会社　富士電機総合研究所 電磁式粉砕混合処理装置
US4936513A (en) * 1987-12-30 1990-06-26 Otisca Industries, Ltd. Ball mills
BE1007890A3 (fr) * 1993-12-29 1995-11-14 Slegten Sa Elements de blindage pour broyeur rotatif et broyeur equipe de tels elements.
DE4432200C1 (de) * 1994-09-09 1996-02-29 Evv Vermoegensverwaltungs Gmbh Rührwerksmühle
JP3748440B2 (ja) * 2003-04-01 2006-02-22 株式会社アーステクニカ ボールミル
ES2304157T3 (es) * 2003-04-15 2008-09-16 Willy A. Bachofen Ag Molino de bolas con agitador.
DE102007043670A1 (de) * 2007-09-13 2009-04-02 Netzsch-Feinmahltechnik Gmbh Rührwerkskugelmühle
DE102008058585A1 (de) * 2008-11-22 2010-05-27 Netzsch-Feinmahltechnik Gmbh Rührwerkskugelmühle
CH700446A1 (de) * 2009-02-24 2010-08-31 Bachofen Willy A Ag Rührwerkskugelmühle.
DE102010049827A1 (de) * 2010-10-27 2012-05-03 Netzsch-Feinmahltechnik Gmbh Rührwerkskugelmühle

Also Published As

Publication number Publication date
CN104815726A (zh) 2015-08-05
BR102014032287B1 (pt) 2020-12-08
US20150174583A1 (en) 2015-06-25
BR102014032287A2 (pt) 2016-05-24
US10279353B2 (en) 2019-05-07
EP2886198A1 (de) 2015-06-24
DE102013021756A1 (de) 2015-06-25
JP5963179B2 (ja) 2016-08-03
ES2642006T3 (es) 2017-11-14
JP2015120151A (ja) 2015-07-02
CN104815726B (zh) 2017-05-31

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