EP0180976A2 - Broyeur agitateur, en particulier broyeur agitateur à billes - Google Patents

Broyeur agitateur, en particulier broyeur agitateur à billes Download PDF

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Publication number
EP0180976A2
EP0180976A2 EP85114116A EP85114116A EP0180976A2 EP 0180976 A2 EP0180976 A2 EP 0180976A2 EP 85114116 A EP85114116 A EP 85114116A EP 85114116 A EP85114116 A EP 85114116A EP 0180976 A2 EP0180976 A2 EP 0180976A2
Authority
EP
European Patent Office
Prior art keywords
agitator
air
outlet
mill
wall
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.)
Granted
Application number
EP85114116A
Other languages
German (de)
English (en)
Other versions
EP0180976B1 (fr
EP0180976A3 (en
Inventor
Ulrich Barthelmess
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.)
Omya GmbH
Original Assignee
Omya 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 Omya GmbH filed Critical Omya GmbH
Priority to AT85114116T priority Critical patent/ATE50160T1/de
Publication of EP0180976A2 publication Critical patent/EP0180976A2/fr
Publication of EP0180976A3 publication Critical patent/EP0180976A3/de
Application granted granted Critical
Publication of EP0180976B1 publication Critical patent/EP0180976B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B02C2017/165—Mills in which a fixed container houses stirring means tumbling the charge with stirring means comprising more than one agitator

Definitions

  • the invention relates to an agitator mill, in particular an agitator ball mill according to the preamble of claim 1.
  • a mill is already known from DE-OS 17 57 942.
  • the inlet is located in or near one end of the essentially cylindrical housing or grinding container and the outlet is in or near the opposite end wall.
  • Pipe sockets are provided as the inlet and outlet.
  • the coarse grain can be excreted through a downstream sifter - however, a correspondingly high effort is required. Cooled air has therefore already been used as a carrier medium. In other mills, chunks of frozen carbon dioxide have already been added to the mill. Correspondingly high costs are to be spent.
  • the invention has for its object to provide a device of the type mentioned, which has a relatively large throughput with a small, compact design with good grain distribution in the outlet.
  • the solution to this problem is specified in the characterizing part of claim 1.
  • the outlet is therefore provided in the upper housing wall. It says a relatively large space available.
  • the outlet expediently extends over essentially the entire length and width of the upper housing wall.
  • a large air flow can be passed through the large outlet at a relatively low speed, so that a correspondingly large cooling of the mill and the ground material is achieved. Thanks to the relatively small, even flow in the large-area outlet, you get a relatively even fine material with a uniform grain distribution.
  • This classifying effect in the outlet can be increased by a deflection grille made of inclined slats in the outlet, which hold back very coarse coarse particles (so-called "spray particles”) and above all the grinding media.
  • a further improvement is achieved in that the inlet extends parallel to the (at least one) stirring shaft, essentially over the entire length of the stirring shaft (claim 5).
  • a large throughput corresponds to the large inlet; since the inlet extends over the entire length of the mill, the entire volume is used evenly.
  • the ground material is expediently introduced (blown in) into the mill with air, that is to say the inlet is designed as a ground material air inlet. Simultaneously with that The ground material is thus evenly distributed over the entire length of the mill, which is thus cooled evenly; local overheating is avoided.
  • the agitator shaft can be hollow (claim 8), so that air is sucked in from the outside through the hollow shaft and let into the mill for the purpose of uniform cooling.
  • the stirring elements seated on the stirring shaft can be hollow and can be provided with at least one outlet for air (claim 9).
  • the air is distributed particularly evenly over the entire grinding bed - the cooling is correspondingly uniform and, in particular, the finer particles of the ground material are automatically discharged to the outlet.
  • a further embodiment of the invention provides a plurality of agitator shafts next to one another, preferably two rows of three agitator shafts each (claims 6 and 7). Accordingly, the throughput is increased - with a very compact design or small space requirement.
  • the air introduced into the mill can also be cooled or
  • the mill according to the invention has an essentially box-shaped, rhombohedron-shaped housing 1 with two vertical end walls 2, 3, the lower wall 4, the upper wall 5 and two inclined side walls 6, 7. The edges between the inclined side walls and the bottom or top wall are rounded.
  • a rhombic housing six agitator shafts 8 with agitators 9 are arranged, in two rows with three shafts side by side. The orbits of the agitator arms overlap; the stirring arms are axially offset accordingly (cf. FIGS. 1 and 2).
  • the upper row of agitator shafts is offset by half the axial distance from the lower.
  • the inclination of the side walls 6, 7 corresponds to this axial offset.
  • the regrind inlet 10 is provided on the inclined longitudinal wall 7 of the mill.
  • This inlet 10 is designed as a shaft which extends essentially over the entire axial length of the mill (cf. FIGS. 1 and 2).
  • This inlet is provided / on the inclined side wall 7, which forms an angle greater than 90 degrees with the bottom wall 4 in the interior of the mill.
  • the outer wall 11 of the shaft is provided parallel to the inclined inner side wall 7 and merges into the bottom wall 4 with a curve 12.
  • the inner side wall 7 ends at a distance above the bottom wall 4.
  • the outlet 13 is provided in the upper wall 5 of the housing 1 and extends essentially over the entire length and width of the upper housing wall, up to the curved areas; the width of the outlet 13 thus corresponds approximately to the center distance of the outer R lickwerkswellen 8.
  • This large-area outlet opening is a grid made of inclined rods or lamellae 14.
  • An intermediate piece 15b leads from the rectangular outlet opening 13 to the cylindrical classifier housing 15. The fine material reaches the inside of the classifier impeller 15a in the direction of the flow arrows and is separated from the classifying air as usual by means of a subsequent filter.
  • the coarse material falls back inside the mill and is further crushed there.
  • the coarse material arrives back into the grinding material inlet 10 via a funnel 32 attached to the classifier housing at the bottom and an inclined pipe 33 or a slide.
  • the classifier is arranged correspondingly high above the mill and by means of a pipe section 34 connected to the outlet 13 or the intermediate piece 15b.
  • the shafts 8 are designed as hollow shafts (tubes) and are provided with radial bores 16 in the interior of the mill.
  • the agitator arms 9 are also hollow or tubular and connected to the interior of the agitator shaft 8 via a radial bore.
  • the stirring arms 9 have lateral openings 17 and / or an opening 18 at their outer 'end. Thus the inside of the mill is connected to the outside atmosphere.
  • the vacuum or suction applied to the sifter 15, 15a and / or a downstream sifter thus draws air through the mill from the outside through the hollow shafts 8 and stirring arms 9. Due to the large number of stirring shafts 8 and stirring arms 9, the air is distributed finely and evenly over the entire grinding bed. In this way, the relatively very large inlet 10 and in particular very large outlet 13 are possible. Through the stirring arms 9 and the air flowing into the grinding bed at the same time 1. loosened the grinding bed. This improves the mobility of the grinding media 20. The forming F eingut is immediately, blown out of the grinding bed, so to speak in status nascendi. Above all, however, the grinding bed and the mill as a whole are cooled so that there is no overheating.
  • This cooling effect makes it possible to arrange a plurality of agitator shafts 8 one above the other in rows.
  • the dimensions of the mill in terms of length, width and height are practically unlimited, since the previous limitation no longer applies due to the heating.
  • the grinding media and coarse material are retained by the deflector blades 14.
  • the bearings 21 are simultaneously cooled by the sucked-in air.
  • Each agitator shaft 8 can be driven individually by a separate gear motor 22.
  • the single drive is cheaper than a drive by a correspondingly larger motor via a transfer case, as indicated schematically in FIG. 3. All mills should prevent fine material or dust from escaping from the inside of the mill.
  • the sealing of the shaft openings through the housing walls is difficult here.
  • the vacuum inside the mill reduces the leakage of fines.
  • compressed air can be applied to the shaft end passages.
  • the end walls 2, 3 are double-walled, each with an inner wall and an outer wall Wall 2a, 3a formed along with corresponding peripheral wall parts.
  • Compressed air is introduced into the air chambers 23, 24 thus formed by means of one compressed air connection 25 each.
  • the compressed air constantly flows through the shaft penetrations of the inner end walls 2, 3, which additionally prevents fine material from escaping (FIG. 2).
  • the regrind can be fed into the grinding room or agitation room with the exclusion of air or with additional conveying air.
  • air can be input finely distributed over the entire housing.
  • the peripheral walls - the inclined side walls 6, 7 and the lower wall 4 and upper wall 5 - are constructed in a double-walled manner from an inner wall and an outer wall 4a, 5a, 6a, 7a arranged at a distance therefrom.
  • the cavity 27 formed in this way can be acted upon with compressed air by means of a pipe socket attached to the outer wall 6a.
  • the inner walls have openings 26 for the passage of air. These air inlet openings 26 are primarily provided in the lower wall 4, but not or less in the upper region of the mill.
  • the various possibilities for introducing air into the grinding bed can be used individually or cumulatively. The introduction of air via hollow stirrer shafts and stirrers is most effective be.
  • valves are used in the mixing arms, which block the air outlet during the upper circulation phase of each mixing arm.
  • the air streams emerging from the stirring elements are thus directed essentially downwards and not upwards. This benefits the uniformity of the grinding effect over the entire volume of the mill.
  • check valves are built into the stirring arms 9.
  • a seat 29 for a valve ball 30 or similar valve body is provided in each stirring arm.
  • the valve seat is arranged radially inside and the valve ball radially outside. In the upper region of the orbit of the agitator arms 9, gravity thus presses the valve ball 30 - against the centrifugal force plus the pressure force of the higher air pressure in the agitator arm 9 - onto the valve seat and thus blocks the air outlet.
  • the weight of the valve ball 30 acts in the same direction as the centrifugal force and pressure force, the valve ball is therefore removed from the valve seat and the air flow is released downwards or into the lower area of the mill.
  • a compression spring 31 is provided according to FIG. 4, which also limits the valve lift.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Magnetic Ceramics (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Cereal-Derived Products (AREA)
  • Disintegrating Or Milling (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Processing Of Solid Wastes (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
EP85114116A 1984-11-09 1985-11-06 Broyeur agitateur, en particulier broyeur agitateur à billes Expired - Lifetime EP0180976B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85114116T ATE50160T1 (de) 1984-11-09 1985-11-06 Ruehrwerksmuehle, insb. ruehrwerkskugelmuehle.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3440993 1984-11-09
DE3440993A DE3440993C2 (de) 1984-11-09 1984-11-09 Rührwerksmühle, insbesondere Rührwerkskugelmühle

Publications (3)

Publication Number Publication Date
EP0180976A2 true EP0180976A2 (fr) 1986-05-14
EP0180976A3 EP0180976A3 (en) 1987-11-19
EP0180976B1 EP0180976B1 (fr) 1990-02-07

Family

ID=6249923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114116A Expired - Lifetime EP0180976B1 (fr) 1984-11-09 1985-11-06 Broyeur agitateur, en particulier broyeur agitateur à billes

Country Status (15)

Country Link
US (1) US4673134A (fr)
EP (1) EP0180976B1 (fr)
JP (1) JPS61171550A (fr)
KR (1) KR900005825B1 (fr)
CN (1) CN85107966B (fr)
AT (1) ATE50160T1 (fr)
AU (1) AU570613B2 (fr)
CA (1) CA1275993C (fr)
DE (2) DE3440993C2 (fr)
DK (1) DK155692C (fr)
ES (1) ES8700965A1 (fr)
FI (1) FI88267C (fr)
NO (1) NO162182C (fr)
PT (1) PT81438B (fr)
ZA (1) ZA858624B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991001648A1 (fr) * 1989-07-26 1991-02-21 Servco S.P.A. Broyeur pour la fabrication d'un produit forme par une suspension de particules solides dans un vehicule gras
EP0719585A1 (fr) * 1994-12-31 1996-07-03 OMYA GmbH Broyeur agitateur avec séparateur pour la rétention de perles de broyage

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3615491A1 (de) * 1984-11-09 1987-11-12 Omya Gmbh Ruehrwerkskugelmuehle
DE3615493A1 (de) * 1984-11-09 1987-11-12 Omya Gmbh Ruehrwerkskugelmuehle mit sichtvorrichtung
US4830289A (en) * 1987-08-27 1989-05-16 Ube Industries, Ltd. Centrifugal fluidized grinding apparatus
JPH01171627A (ja) * 1987-12-28 1989-07-06 Inoue Seisakusho:Kk 湿式媒体分散機
DE3838981A1 (de) * 1988-11-18 1990-05-23 Eirich Walter Ruehrwerkskugelmuehle
SE9000797L (sv) * 1990-03-07 1991-09-08 Sala International Ab Anordning foer malning av mineralprodukter
US5201473A (en) * 1991-03-22 1993-04-13 Central Fiber Corporation Dry material feeder and measuring device
ATE125468T1 (de) * 1991-04-23 1995-08-15 Ecc Int Ltd Trockenzermahlung.
US5289978A (en) * 1991-07-08 1994-03-01 Lundquist Lynn C Apparatus for continuous container label removal
US5279466A (en) * 1991-10-10 1994-01-18 Williams Robert M Isokinetic separator apparatus
US5236133A (en) * 1991-12-04 1993-08-17 Lundquist Lynn C Method of container label removal
SE469417B (sv) * 1991-12-20 1993-07-05 Sala International Ab Saett och anordning foer finmalning av foer filleraendamaal anvaendbara mineral i torrt tillstaand
JP2566884Y2 (ja) * 1992-05-27 1998-03-30 三井鉱山株式会社 粉砕機
US5301812A (en) * 1993-04-02 1994-04-12 Ecc International Inc. Air classifying apparatus with wear reducing deflector
US5330110A (en) * 1993-07-12 1994-07-19 Williams Robert M Apparatus for grinding material to a fineness grade
EP0681155B1 (fr) 1994-05-06 2002-01-30 Ecc International Limited Séchage de matériaux en suspension
US5662279A (en) * 1995-12-05 1997-09-02 Eastman Kodak Company Process for milling and media separation
DE19601594C2 (de) * 1996-01-18 1998-07-23 Fritsch Gmbh Verfahren und Vorrichtung zum Zerkleinern von Materialien, insbesondere zur Probenvorbereitung für Analysen
WO1998022220A1 (fr) * 1996-11-22 1998-05-28 Toyo Ink Manufacturing Co., Ltd. Dispositif de dispersion
US6000646A (en) * 1998-03-16 1999-12-14 Ranne; Bethyl H. Double barrel media mill for grinding and dispersing particulate matter and pigment for paint, coatings, ink and other fluid pigment vehicles
DE19832769C2 (de) * 1998-07-22 2000-09-28 Netzsch Erich Holding Verfahren zum Betreiben einer Rührwerksmühle
US6158680A (en) * 1998-09-29 2000-12-12 Ranne; Bill H. Multi-barrel media mill and method of grinding
US6196480B1 (en) * 1999-03-22 2001-03-06 Fukuda Metal Foil & Powder Co., Ltd. Ball mill, a method for preparing fine metal powder, and fine metal powder prepared by the method
WO2006025753A2 (fr) * 2004-08-31 2006-03-09 Metso Minerals (Matamata) Limited Appareil de reduction de taille
CN100377789C (zh) * 2006-04-27 2008-04-02 扬州群友粉体材料科技有限公司 大型行星球磨机的集料组件
DE102009012743A1 (de) * 2008-11-26 2010-05-27 Roland Dr. Nied Feinmühle und Betriebsverfahren dafür
PL2666562T3 (pl) * 2012-05-25 2014-12-31 Technofond Giessereihilfsmittel Gmbh Urządzenie regeneracyjne
DE102012107005A1 (de) * 2012-07-31 2014-05-22 Netzsch-Feinmahltechnik Gmbh Rührwerkskugelmühle
US9764329B2 (en) * 2013-01-15 2017-09-19 Aaron Engineered Process Equipment, Inc. Rotary mill
CN103418485A (zh) * 2013-04-27 2013-12-04 占天义 研磨分离器
US10376894B2 (en) 2014-02-14 2019-08-13 Glennon C. Sontag Grinder
CN106269145A (zh) * 2015-05-14 2017-01-04 浙江金华艾领创科技有限公司 一种矿物的高效研磨工艺及设备
CN105537057A (zh) * 2016-02-05 2016-05-04 江苏三杰新能源有限公司 一种电池涂覆材料用匀浆机
DE102016121926B4 (de) * 2016-11-15 2019-12-24 Neuman & Esser Process Technology Gmbh Mühle

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DE576946C (de) * 1927-02-24 1933-05-26 Anode Rubber Co Ltd Mahlvorrichtung zur Herstellung von Dispersionen in kolloidaler oder nahezu kolloidaler Feinheit
US2546286A (en) * 1947-06-28 1951-03-27 Zakel Paul Rotary beater mill with imperforate concaves, vertical baffled discharge, upper anvil plate, and air and material inlets
GB825143A (en) * 1956-09-04 1959-12-09 Union Process Ltd Improvements in or relating to apparatus and methods for grinding materials
GB948819A (en) * 1960-05-02 1964-02-05 United Gas Industries Ltd Improvements in granulators
FR86283E (fr) * 1961-11-03 1966-03-30
DE1207347B (de) * 1961-12-06 1965-12-23 Roger Joseph Sevin Maschine zum Dispergieren von Stoffteilchen
CH477916A (de) * 1967-07-01 1969-09-15 Vyzk Ustav Organickych Synthes Einrichtung zum Vermahlen fester Teilchen in trockenem Zustand
US3682399A (en) * 1969-03-25 1972-08-08 Vyzk Ustav Organ Syntez Apparatus for comminuting and dispersing solid particles
CH566167A5 (fr) * 1973-09-28 1975-09-15 Bicik Vladislav
SU594294A2 (ru) * 1974-11-05 1978-02-25 Всесоюзный научно-исследовательский институт по креплению скважин и буровым растворам Бисерна мельница
DE2546146A1 (de) * 1975-10-15 1977-04-28 Netzsch Maschinenfabrik Verfahren zum kontinuierlichen feinmahlen und dispergieren und ruehrwerksmuehle zur durchfuehrung des verfahrens
DD153331A1 (de) * 1980-10-02 1982-01-06 Wolfgang Haentzschel Ruehrwerkskugelmuehle
JPS57107249A (en) * 1980-12-25 1982-07-03 Tomio Ino Grinding cleaning device for surface of granular body

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991001648A1 (fr) * 1989-07-26 1991-02-21 Servco S.P.A. Broyeur pour la fabrication d'un produit forme par une suspension de particules solides dans un vehicule gras
US5197680A (en) * 1989-07-26 1993-03-30 Servco S.P.A. Ball mill for the manufacture of goods formed by the suspension of solid particles in a fatty carrier
EP0719585A1 (fr) * 1994-12-31 1996-07-03 OMYA GmbH Broyeur agitateur avec séparateur pour la rétention de perles de broyage

Also Published As

Publication number Publication date
NO162182B (no) 1989-08-14
CA1275993C (fr) 1990-11-06
EP0180976B1 (fr) 1990-02-07
US4673134A (en) 1987-06-16
KR900005825B1 (ko) 1990-08-13
DK474285A (da) 1986-05-10
DE3440993A1 (de) 1986-05-22
NO854372L (no) 1986-05-12
CN85107966A (zh) 1986-05-10
JPS61171550A (ja) 1986-08-02
DK155692C (da) 1989-09-25
DE3575874D1 (de) 1990-03-15
NO162182C (no) 1989-11-22
FI88267C (fi) 1993-04-26
CN85107966B (zh) 1987-11-25
DE3440993C2 (de) 1987-02-26
PT81438B (pt) 1987-09-18
AU570613B2 (en) 1988-03-17
FI854203L (fi) 1986-05-10
ZA858624B (en) 1986-08-27
DK474285D0 (da) 1985-10-16
DK155692B (da) 1989-05-01
PT81438A (en) 1985-12-01
JPH0338904B2 (fr) 1991-06-12
AU4905785A (en) 1986-06-26
ES548705A0 (es) 1986-11-16
FI854203A0 (fi) 1985-10-28
KR860003851A (ko) 1986-06-13
ATE50160T1 (de) 1990-02-15
ES8700965A1 (es) 1986-11-16
FI88267B (fi) 1993-01-15
EP0180976A3 (en) 1987-11-19

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