EP0184992B1 - Kugelmühle - Google Patents

Kugelmühle Download PDF

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Publication number
EP0184992B1
EP0184992B1 EP85810576A EP85810576A EP0184992B1 EP 0184992 B1 EP0184992 B1 EP 0184992B1 EP 85810576 A EP85810576 A EP 85810576A EP 85810576 A EP85810576 A EP 85810576A EP 0184992 B1 EP0184992 B1 EP 0184992B1
Authority
EP
European Patent Office
Prior art keywords
grinding
grinding chamber
section
ball mill
cross
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.)
Expired - Lifetime
Application number
EP85810576A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0184992A3 (en
EP0184992A2 (de
Inventor
Gerhard Bühler
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.)
FrymaKoruma AG
Original Assignee
Fryma Maschinen 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
Application filed by Fryma Maschinen AG filed Critical Fryma Maschinen AG
Priority to AT85810576T priority Critical patent/ATE50161T1/de
Publication of EP0184992A2 publication Critical patent/EP0184992A2/de
Publication of EP0184992A3 publication Critical patent/EP0184992A3/de
Application granted granted Critical
Publication of EP0184992B1 publication Critical patent/EP0184992B1/de
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
    • B02C17/166—Mills in which a fixed container houses stirring means tumbling the charge of the annular gap type

Definitions

  • the invention relates to an annular gap ball mill for the continuous crushing and dispersing of a solid ground material carried in a liquid, with a ring-shaped, rotationally symmetrical grinding chamber, which is formed between a stator and a rotor coupled to a drive, an at least approximately V-shaped on both sides of the vertical central axis Has cross-section and is provided with an inlet and an outlet for the regrind, the grinding chamber being partially filled with grinding balls circulating in a closed circuit, which continuously rotate together with the regrind under the influence of the rotor rotation during operation of the ball mill.
  • a ball mill of the type in question here is described, for example, in DE-A-2 811 899.
  • the ground material for example a more or less thin-bodied mass, flows through the grinding chamber, which is delimited by two approximately "gugelhup-shaped" mantle surfaces, and is thereby comminuted or dispersed by the grinding balls carried along.
  • the grinding balls are separated from the grist and fed back to the grinding chamber.
  • a positive influence on the circulating speed of the grinding media is also to be achieved by the invention described in European patent application 111 703, according to which a separate conveying element is used for the return of the grinding media and therefore a complex and costly mill design has to be accepted again.
  • the start-up of the ball mill should also be ensured regardless of the viscosity of the material to be ground, despite the relatively high degree of filling.
  • a stationary housing 1 (stator) is closed by a cover 2, in which a housing is formed from a cover in a known manner Separating gap formed regrind 3 is provided.
  • a driving body 4 protrudes, which is also delimited by two practically conical walls 4a and 4b inclined towards each other and which also has an upper, central web 5 a rotationally driven shaft 6 is coupled.
  • the grinding chamber which is designated by M and is formed between the housing 1 and the driving body 4, is connected to a product inlet 8 via the inlet shaft 7.
  • a cooling medium K is located outside the housing 1, above the cover 2, and inside the driving body 4, which is designed as a hollow body.
  • the grinding chamber M in the form of an annular shaft is partially filled with grinding balls and the grinding material flows through it during operation, which flows in through the inlet shaft 7 and leaves the grinding chamber M again through the outlet gap.
  • the grinding balls carried in contact with the rotating entraining body 4 circulate in the grinding chamber M with the material to be ground, but cannot leave the grinding material through the outlet shaft 3 and inevitably return to the grinding chamber M through return channels 9.
  • the grinding chamber cross section is continuously enlarged, which brings the advantages mentioned at the outset.
  • This widening of the cross-section can exist on the one hand in accordance with FIG. on the other hand, it is also possible to subdivide the grinding chamber into a plurality of sections of constant cross section lying one behind the other in the conveying direction, the cross section of the individual sections increasing in steps in the conveying direction.
  • FIG. 2 shows the result of comparative tests carried out on the basis of a curve diagram.
  • Curve I shows the dependence of the round trip time on the degree of filling (percentage of the filling volume of the grinding balls in the total grinding chamber volume) of a known ball mill
  • curve II shows the results achieved with a ball mill designed according to the invention. It can be seen that the expansion of the grinding chamber according to the invention permits a considerably greater degree of filling with the same circulation time, as a result of which the grinding process could be considerably intensified without the aid of complex additional equipment.
  • the expansion of the grinding chamber to be carried out according to the embodiment according to FIG. 1 can be - as a deviation from the known parallel boundary walls - between 0.1 and 2 °, but is preferably about 0.3 °.
  • the respective gap width difference between two adjacent grinding chamber sections should be between 0.1 and 0.3 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Glass Compositions (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Disintegrating Or Milling (AREA)
  • Dry Shavers And Clippers (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
EP85810576A 1984-12-06 1985-12-05 Kugelmühle Expired - Lifetime EP0184992B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85810576T ATE50161T1 (de) 1984-12-06 1985-12-05 Kugelmuehle.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3444575 1984-12-06
DE19843444575 DE3444575A1 (de) 1984-12-06 1984-12-06 Kugelmuehle

Publications (3)

Publication Number Publication Date
EP0184992A2 EP0184992A2 (de) 1986-06-18
EP0184992A3 EP0184992A3 (en) 1987-11-19
EP0184992B1 true EP0184992B1 (de) 1990-02-07

Family

ID=6252093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810576A Expired - Lifetime EP0184992B1 (de) 1984-12-06 1985-12-05 Kugelmühle

Country Status (8)

Country Link
US (1) US4715547A (da)
EP (1) EP0184992B1 (da)
JP (1) JPS61136447A (da)
CN (1) CN85109509A (da)
AT (1) ATE50161T1 (da)
DE (2) DE3444575A1 (da)
DK (1) DK164989C (da)
ES (1) ES8701525A1 (da)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH682465A5 (de) * 1988-06-09 1993-09-30 Buehler Ag Rührwerksmühle.
DE19632757A1 (de) * 1996-08-14 1998-02-19 Draiswerke Gmbh Rührwerksmühle
EP0913200B1 (de) * 1997-10-28 2003-04-23 DRAISWERKE GmbH Rührwerksmühle
DE10110652B4 (de) * 2001-03-06 2004-01-29 Hosokawa Alpine Ag & Co.Ohg, Rührwerksmühle mit torusförmigem Mahlspalt
JP2005191425A (ja) * 2003-12-26 2005-07-14 Tdk Corp キャパシタ用電極の製造方法
FR3072307B1 (fr) 2017-10-12 2019-11-15 Commissariat A L'energie Atomique Et Aux Energies Alternatives Dispositif et procede de broyage cryogenique a jets confluents
FR3072308B1 (fr) 2017-10-12 2019-11-15 Commissariat A L'energie Atomique Et Aux Energies Alternatives Dispositif et procede de broyage cryogenique avec media de broyage sous forme de gaz cryogenique solidifie

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1605025A (en) * 1924-05-26 1926-11-02 Hildebrandt Hermann Comminuting and mixing of substances of all kinds
GB422628A (en) * 1933-07-13 1935-01-14 Whiston Alfred Bristow Improvements relating to the reduction of solid substances to a finely divided state
DE1233237B (de) * 1963-11-13 1967-01-26 Netzsch Maschinenfabrik Ruehrwerksmuehle zum kontinuierlichen Feinstzerkleinern und Dispergieren von Feststoffen
DE2626757C2 (de) * 1975-07-09 1984-03-15 Meyer AG Zuchwil, Zuchwil Rührwerkmühle, insbesondere Kolloidmühle
DE2616155A1 (de) * 1976-04-13 1977-10-27 Karl Heinz Dipl Ing Meller Nassmahlvorrichtung
DE2811899C2 (de) * 1978-03-18 1984-12-06 Fryma-Maschinen Ag, Rheinfelden Spalt-Kugelmühle
DE3022809A1 (de) * 1980-06-19 1982-01-07 Fryma-Maschinen AG, 4310 Rheinfelden Kugelmuehle
DE3242436A1 (de) * 1982-11-16 1984-05-17 Fryma-Maschinen AG, 4310 Rheinfelden Muehle fuer fliessfaehiges mahlgut
DE3431636C1 (de) * 1984-08-29 1985-10-17 Reimbold & Strick GmbH & Co, 5000 Köln Ringspalt-Kugelmuehle

Also Published As

Publication number Publication date
EP0184992A3 (en) 1987-11-19
ES549599A0 (es) 1986-12-01
DE3575875D1 (de) 1990-03-15
US4715547A (en) 1987-12-29
DK563085D0 (da) 1985-12-05
DE3444575A1 (de) 1986-06-12
ATE50161T1 (de) 1990-02-15
JPS61136447A (ja) 1986-06-24
DK164989B (da) 1992-09-28
CN85109509A (zh) 1986-06-10
DK164989C (da) 1993-02-08
ES8701525A1 (es) 1986-12-01
DK563085A (da) 1986-06-07
EP0184992A2 (de) 1986-06-18

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