EP0271012A2 - Broyeur agitateur pour le broyage de pigments - Google Patents

Broyeur agitateur pour le broyage de pigments Download PDF

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Publication number
EP0271012A2
EP0271012A2 EP87117945A EP87117945A EP0271012A2 EP 0271012 A2 EP0271012 A2 EP 0271012A2 EP 87117945 A EP87117945 A EP 87117945A EP 87117945 A EP87117945 A EP 87117945A EP 0271012 A2 EP0271012 A2 EP 0271012A2
Authority
EP
European Patent Office
Prior art keywords
container
stirrer
grinding
agitator mill
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Withdrawn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
EP87117945A
Other languages
German (de)
English (en)
Other versions
EP0271012A3 (fr
Inventor
Manfred Maier
Manfred Mielke
Peter Dr. Hauser
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of EP0271012A2 publication Critical patent/EP0271012A2/fr
Publication of EP0271012A3 publication Critical patent/EP0271012A3/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Withdrawn legal-status Critical Current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
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge

Definitions

  • the invention relates to an agitator mill for grinding, in particular for dry grinding of pigments, with a cylindrical container in which grinding media are located and which is provided with an inlet for the material to be ground and an outlet for the ground material, and with one in the axis of the container arranged, driven stirrer.
  • pigment raw materials can be comminuted by grinding and partially converted into another crystal modification.
  • the mill products thus produced are then often subjected to an additional solvent treatment or incorporated into solvent-containing binder systems in order to be used in printing inks, lacquers and plastics.
  • additional solvent treatment or incorporated into solvent-containing binder systems in order to be used in printing inks, lacquers and plastics.
  • pigment qualities i.e. To achieve particles in the range of 1 ⁇ m and smaller.
  • a large number of large-scale mills such as a vibratory mill, drum mill or tube mill, are used in the grinding of pigment raw materials. These mills are operated with a high volume filling of grinding media from 50% to 90%, so that 10 to 40 times the amount by weight of grinding media must be moved in relation to the amount of millbase during grinding.
  • planetary ball or centrifugal ball mills are used on a laboratory scale for smaller test samples.
  • All common mills also have the major disadvantage that the grinding energy put in is mainly used to heat grinding media and ground material and only serves to a small extent for the comminution work of the pigment raw material.
  • the object was therefore to develop a device for grinding, in particular for dry grinding of pigments, which avoids these disadvantages and is superior to the known grinding devices in terms of efficiency and the quality of the material to be ground.
  • the solution to the problem consists in an agitator mill of the type described in the introduction, in which the effective surfaces of the agitator are designed in the form of carriers for the grinding media which are closely adjacent to the inner wall of the container.
  • the agitator mill essentially consists of a cylindrical container 1 (FIG. 1) which is equipped with an inlet 2 for the material to be ground and with a closable outlet 3 for the ground material, and from a motor-driven stirrer 4.
  • the stirring surfaces 6 of the stirrer held on arms 5 extend closely along the inner wall of the container, so that grinding media 7 therein are carried along by the rotating stirring surfaces and moved along the inner wall.
  • heating or cooling devices 8 which are attached to the outer surfaces of the container 1, a constant temperature control of the ground material and the grinding media is possible.
  • the grinding work takes place between the grinding media or between them and the container wall.
  • the heating or cooling devices can be implemented, for example, by means of coils or a double jacket forming an intermediate space for the flow of a heating or cooling medium, or else by known electrical heating devices.
  • FIG. 2a-c schematically show different embodiments of agitators in cross section.
  • the illustration in FIG. 2a corresponds to the mill shown in FIG. 1.
  • the agitator according to FIG. 2b has a multiplicity of agitator arms 5, 6 which can be arranged offset along the agitator shaft 9.
  • the interior of the container 1 can be designed as an annular space 11, as shown in FIG. This has the advantage that the grinding chamber can also be tempered from the inside if the stirrer shaft is hollow on the inside and provided with supply lines for bath fluids.
  • the speed of the agitators is usually controlled by an electric motor which can be regulated by means of which the agitator can be slowly accelerated from standstill to the desired final speed.
  • an electric motor which can be regulated by means of which the agitator can be slowly accelerated from standstill to the desired final speed.
  • the grinding media are moved from the bottom of the container to its inner wall and, while rolling, crush the material to be ground in a rolling manner.
  • the grinding elements rise partly due to mutual displacement when the stirrer axis is arranged vertically on the inner wall, with regrind being carried along, so that a constant exchange of ground and unground product can take place.
  • the grinding media themselves can be distributed evenly behind the individual agitator arms by rolling over the individual agitator arms on the bottom of the container during the start-up phase of the mill, so that no imbalance can occur when the mill is in full operation, i.e. when the grinding media are pushed in front of the individual arms of the stirrer on the inner surface.
  • two electric motors with adjustable speed can also be attached to the two ends of the stirrer shaft.
  • the agitator mill can also be operated inclined or horizontally. In this case, it is expedient, but not absolutely necessary, to divide the interior of the container into individual sectors via metal sieves or perforated plates 12 (FIG. 2b) arranged radially on the stirrer cell 9, into which the grinding media are filled according to the desired surface area of the container wall.
  • a further embodiment of the agitator mill consists in the fact that the agitator consists of a cage-like drum 13 (FIG. 3) which has flat webs 14 which are axially parallel on the circumference and run closely along the container wall.
  • a further embodiment of the agitator mill (FIG. 4) consists in that the agitator has a plurality of arms 15 with paddle-like agitating elements 16, which are offset along the agitator shaft 9 and the circumference of the container, the surfaces of which are at a distance from one another or partially overlap.
  • the grinding media are guided by the centrifugal forces, even when the mill is in horizontal operation, by means of the blades along the container wall, so that uniform, intensive grinding is ensured without the occurrence of imbalance.
  • grinding balls or cylindrical grinding media are used as grinding media, the diameters of which are at least twice as large as the distance of the stirring blade from the inner wall of the container.
  • Appropriate diameter ranges are 5 to 80 mm, preferably 10 to 40 mm.
  • the advantages of the agitator mill according to the invention are that only the grinding media with the material to be ground are moved by the agitator and the outer, temperature-controllable cylindrical jacket remains stationary, so that the actual grinding always takes place in the region of the temperature-controlled and coolable wall and overheating of the material to be ground is avoided becomes.
  • Another advantage is that the amount of grinding media is limited to the partial to complete coverage of the outer cylinder surface and no high volume filling with grinding media is necessary as in the mills corresponding to the prior art.
  • the volume utilization in the mill according to the invention is higher than in the known devices, the increase in the total grinding volume causing fewer technical problems than in the centrifugal mills moved with the container.
  • the forced movement of the grinding media makes it easier to recognize and overcome problems with the grinding material beating or caking on the wall of the container than with grinding media which only roll due to their inertial forces and which bake more easily and then become ineffective.
  • the mill according to the invention offers the possibility, by increasing the diameter and / or length of the container, to achieve the large cooling and tempering surfaces required for production plants in order to grind regrind in large quantities (up to a few 100 kg) grind in a mill while keeping the product temperatures largely constant.
  • a further advantage is that the grinding products can be crystallized into finished pigments in the same mill after treatment with solvent and, if appropriate, auxiliaries, the grinding media helping to avoid overcrystallization of the pigments due to the shear forces that occur.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP87117945A 1986-12-11 1987-12-04 Broyeur agitateur pour le broyage de pigments Withdrawn EP0271012A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3642330 1986-12-11
DE19863642330 DE3642330A1 (de) 1986-12-11 1986-12-11 Ruehrwerksmuehle zum mahlen von pigmenten

Publications (2)

Publication Number Publication Date
EP0271012A2 true EP0271012A2 (fr) 1988-06-15
EP0271012A3 EP0271012A3 (fr) 1989-07-19

Family

ID=6315962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87117945A Withdrawn EP0271012A3 (fr) 1986-12-11 1987-12-04 Broyeur agitateur pour le broyage de pigments

Country Status (4)

Country Link
US (1) US4966331A (fr)
EP (1) EP0271012A3 (fr)
BR (1) BR8706724A (fr)
DE (1) DE3642330A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104001594A (zh) * 2014-05-12 2014-08-27 北方民族大学 一种双层保护纳米球磨罐
CN109622152A (zh) * 2017-10-30 2019-04-16 河南高盛企业管理咨询有限公司 一种卧式多级滚动球磨机

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3132267B2 (ja) * 1993-11-02 2001-02-05 株式会社村田製作所 セラミック熱処理装置
US5704556A (en) * 1995-06-07 1998-01-06 Mclaughlin; John R. Process for rapid production of colloidal particles
US6193844B1 (en) 1995-06-07 2001-02-27 Mclaughlin John R. Method for making paper using microparticles
IL118088A0 (en) * 1995-06-07 1996-08-04 Anzon Inc Colloidal particles of solid flame retardant and smoke suppressant compounds and methods for making them
US5968316A (en) * 1995-06-07 1999-10-19 Mclauglin; John R. Method of making paper using microparticles
US5935890A (en) * 1996-08-01 1999-08-10 Glcc Technologies, Inc. Stable dispersions of metal passivation agents and methods for making them
US5900116A (en) 1997-05-19 1999-05-04 Sortwell & Co. Method of making paper
DE10057327A1 (de) * 2000-11-17 2002-05-23 Buehler Ag Verfahren und Vorrichtung zum Herstellen von Druckfarben
US7699250B1 (en) * 2007-03-02 2010-04-20 Progressive Industries, Inc. Media grinding mill
WO2012018514A2 (fr) 2010-07-26 2012-02-09 Sortwell & Co. Procédé de dispersion et d'agrégation de composants de suspensions minérales et polymères multivalents à poids moléculaire élevé pour agrégation d'argile
DE102010049827A1 (de) 2010-10-27 2012-05-03 Netzsch-Feinmahltechnik Gmbh Rührwerkskugelmühle
US8721896B2 (en) 2012-01-25 2014-05-13 Sortwell & Co. Method for dispersing and aggregating components of mineral slurries and low molecular weight multivalent polymers for mineral aggregation
DE102015109337A1 (de) * 2015-06-11 2016-12-15 Fritsch Gmbh Messermühle
CN114534866A (zh) * 2020-11-18 2022-05-27 威利A.巴霍芬公司 搅拌式球磨机

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
US639406A (en) * 1899-06-26 1899-12-19 Eugen Kreiss Disintegrator.
FR402660A (fr) * 1909-05-03 1909-10-14 Bruno Moustier Broyeur à boulets
US2019454A (en) * 1931-11-23 1935-10-29 Smidth & Co As F L Grinding mill
US2592994A (en) * 1942-05-28 1952-04-15 Smidth & Co As F L Method and apparatus for grinding by the use of grinding bodies subjected to centrifugal force
DE915408C (de) * 1943-05-25 1954-07-22 Smidth & Co As F L Verfahren zum Betrieb einer Muehle
GB638328A (en) * 1946-12-07 1950-06-07 Du Pont Moulding powders comprising fluorine-containing polymers
DE1230659B (de) * 1958-01-08 1966-12-15 Wilhelm Loedige Trommelmischer zum Mischen trockner, feinkoerniger, pulverfoermiger oder kurzfaseriger Stoffe
US3075710A (en) * 1960-07-18 1963-01-29 Ignatz L Feld Process for wet grinding solids to extreme fineness
CH421670A (de) * 1963-04-23 1966-09-30 Draiswerke Gmbh Mahlverfahren für diskontinuierlich und kontinuierlich arbeitende Mühlen und Mahlanlage zur Durchführung des Verfahrens
US3329348A (en) * 1963-10-31 1967-07-04 John D Pootmans Pigment grinding mill
US3471093A (en) * 1965-06-16 1969-10-07 Fritz Otto Wienert Method for grinding
US3339896A (en) * 1966-06-03 1967-09-05 Southwestern Eng Co Stirring device
FR2229463A1 (en) * 1973-05-17 1974-12-13 Euro Machines Mixer-grinder for solid-liquid dispersions - has variable speed rotating vessel and fixed blade giving simple economical construction
SU566628A2 (ru) * 1976-04-23 1977-07-30 Sysa Anatolij B Кольцева мельница
DE2646512C2 (de) * 1976-10-15 1987-04-16 Fritz Lödige Vorrichtung zur chargenweisen Trocknung von Schüttgut
SU778789A1 (ru) * 1978-12-15 1980-11-15 Сибирский Филиал Всесоюзного Дважды Ордена Трудового Красного Знамени Теплотехнического Научно-Исследовательского Института Им. Ф.Э.Дзержинского Барабанна мельница
DE3249928C3 (de) * 1982-12-10 1995-06-29 Buehler Ag Geb Rührwerksmühle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104001594A (zh) * 2014-05-12 2014-08-27 北方民族大学 一种双层保护纳米球磨罐
CN109622152A (zh) * 2017-10-30 2019-04-16 河南高盛企业管理咨询有限公司 一种卧式多级滚动球磨机

Also Published As

Publication number Publication date
DE3642330A1 (de) 1988-06-23
BR8706724A (pt) 1989-07-11
US4966331A (en) 1990-10-30
EP0271012A3 (fr) 1989-07-19
DE3642330C2 (fr) 1990-05-31

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