EP0184992A2 - Broyeur à billes - Google Patents

Broyeur à billes Download PDF

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Publication number
EP0184992A2
EP0184992A2 EP85810576A EP85810576A EP0184992A2 EP 0184992 A2 EP0184992 A2 EP 0184992A2 EP 85810576 A EP85810576 A EP 85810576A EP 85810576 A EP85810576 A EP 85810576A EP 0184992 A2 EP0184992 A2 EP 0184992A2
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.)
Granted
Application number
EP85810576A
Other languages
German (de)
English (en)
Other versions
EP0184992B1 (fr
EP0184992A3 (en
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/fr
Publication of EP0184992A3 publication Critical patent/EP0184992A3/de
Application granted granted Critical
Publication of EP0184992B1 publication Critical patent/EP0184992B1/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
    • B02C17/166—Mills in which a fixed container houses stirring means tumbling the charge of the annular gap type

Definitions

  • the invention relates to a ball mill for the continuous crushing and dispersing of a solid ground material carried in a liquid, with an annularly shaped, rotationally symmetrical grinding chamber, which is formed between a stator and a rotor coupled to a drive, an at least approximately V-shaped cross section on both sides of the vertical central axis has and is provided with an inlet and an outlet for the circulating regrind, the grinding chamber being partially filled with grinding balls which rotate continuously together with the regrind under the influence of the rotor rotation during operation of the ball mill.
  • a ball mill of the type considered here is described for example in DE-OS 28 11 899.
  • 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" jacket surfaces, and is thereby comminuted or dispersed by the grinding balls carried along. Before the grist outlet, the grinding balls are separated from the grist and fed back to the grinding chamber.
  • 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 regrind outlet 3 formed from a separating gap is provided in a known manner.
  • a driving body 4 (rotor) protrudes, which is also delimited by two practically conical, mutually inclined walls 4a and 4b and which rotates via an upper, central web 5 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 gap 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 annular gap-shaped grinding chamber M is partially filled with grinding balls and during operation, the ground material flows through, which flows in through the inlet gap 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 it through the outlet gap 3 and inevitably return to the grinding chamber M through return channels 9.
  • the grinding chamber cross section is continuously enlarged, which is indicated at the beginning advantages.
  • This widening of the cross-section can, on the one hand, exist in accordance with FIG. 1 in the form of a continuous, stepless increase in cross-section; 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 illustrates the result of comparative tests carried out on the basis of a curve diagram.
  • Curve 1 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 intensified considerably without the aid of complex additional equipment.
  • the expansion of the grinding chamber to be carried out in accordance with 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 approximately 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)
  • Coloring Foods And Improving Nutritive Qualities (AREA)
  • Dry Shavers And Clippers (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
EP85810576A 1984-12-06 1985-12-05 Broyeur à billes Expired - Lifetime EP0184992B1 (fr)

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 true EP0184992A2 (fr) 1986-06-18
EP0184992A3 EP0184992A3 (en) 1987-11-19
EP0184992B1 EP0184992B1 (fr) 1990-02-07

Family

ID=6252093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810576A Expired - Lifetime EP0184992B1 (fr) 1984-12-06 1985-12-05 Broyeur à billes

Country Status (8)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0824964A1 (fr) * 1996-08-14 1998-02-25 DRAISWERKE GmbH Broyeur agitateur
EP0913200A1 (fr) * 1997-10-28 1999-05-06 DRAISWERKE GmbH Broyeur agitateur

Families Citing this family (5)

* 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.
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0824964A1 (fr) * 1996-08-14 1998-02-25 DRAISWERKE GmbH Broyeur agitateur
EP0913200A1 (fr) * 1997-10-28 1999-05-06 DRAISWERKE GmbH Broyeur agitateur

Also Published As

Publication number Publication date
EP0184992B1 (fr) 1990-02-07
ES549599A0 (es) 1986-12-01
JPS61136447A (ja) 1986-06-24
DE3444575A1 (de) 1986-06-12
ES8701525A1 (es) 1986-12-01
DK563085A (da) 1986-06-07
CN85109509A (zh) 1986-06-10
DK164989B (da) 1992-09-28
DK563085D0 (da) 1985-12-05
DK164989C (da) 1993-02-08
ATE50161T1 (de) 1990-02-15
DE3575875D1 (de) 1990-03-15
EP0184992A3 (en) 1987-11-19
US4715547A (en) 1987-12-29

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