EP2036612B1 - Moulin à bague de roulement à billes - Google Patents

Moulin à bague de roulement à billes Download PDF

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Publication number
EP2036612B1
EP2036612B1 EP20070018012 EP07018012A EP2036612B1 EP 2036612 B1 EP2036612 B1 EP 2036612B1 EP 20070018012 EP20070018012 EP 20070018012 EP 07018012 A EP07018012 A EP 07018012A EP 2036612 B1 EP2036612 B1 EP 2036612B1
Authority
EP
European Patent Office
Prior art keywords
grinding
track
pressure
ring
ball 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.)
Expired - Fee Related
Application number
EP20070018012
Other languages
German (de)
English (en)
Other versions
EP2036612A1 (fr
Inventor
Jens Kasper
Ralf-Eugen Krenzel
Jens-Peter Dr. Thiel
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.)
Claudius Peters Technologies GmbH
Original Assignee
Claudius Peters Technologies 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 Claudius Peters Technologies GmbH filed Critical Claudius Peters Technologies GmbH
Priority to DE200750003761 priority Critical patent/DE502007003761D1/de
Priority to EP20070018012 priority patent/EP2036612B1/fr
Publication of EP2036612A1 publication Critical patent/EP2036612A1/fr
Application granted granted Critical
Publication of EP2036612B1 publication Critical patent/EP2036612B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/12—Mills with at least two discs or rings and interposed balls or rollers mounted like ball or roller bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/003—Shape or construction of discs or rings

Definitions

  • the invention relates to a ball mill with a grinding track defining Mahlring.
  • a plurality of grinding balls are adapted to perform a grinding movement along the grinding track. It is provided a pressure track, by means of which the grinding balls are pressed against the Mahlspur.
  • ball ring mills of this type are driven, so that the grinding balls move along the milling track.
  • the ground material for example coal, is passed between the grinding balls and the grinding track and ground by the grinding movement.
  • the pressure ring ensures that the grinding balls fly up with the right pressure on the milling track.
  • the pressure ring should additionally contribute to the grinding performance of the ball ring mill and support the lateral guidance of the grinding balls.
  • the contact surface between the pressure track and the grinding balls must be as large as possible and the pressure track must be designed so that it surrounds the grinding balls laterally.
  • the components carrying the pressure track must be made very solid.
  • the handling of these components when building and servicing the ball mill requires considerable effort.
  • From the DE 27 42 354 A1 is a ball mill with a vertical arrangement of Mahlring, grinding balls and pressure ring known. In this case, two contact elements are provided between grinding balls and pressure ring, wherein the contact elements are fastened to one another at a distance to the pressure ring. As a result, the contact area between the pressure ring and the grinding balls is reduced overall and finally the wear on the pressure ring is reduced. But the handling of this three-part pressure ring requires considerable installation and maintenance.
  • the longitudinal direction of the pressure track is the direction along which the grinding balls move during the grinding process.
  • the width of the pressure track extends.
  • the function of the pressure track is to press the grinding balls against the grinding track.
  • the invention has recognized that a large-area contact between the pressure trace and the grinding balls is not required for this function. Rather, this function can be easily met by the inventively streamlined pressure track.
  • the invention has further recognized that it is not appropriate to burden the pressure track with other functions.
  • a reliable side guide which prevents the grinding balls from breaking out of the grinding track in the lateral direction, can be ensured by a suitable design of the grinding ring. It is not necessary that the lateral guidance of the grinding balls is supported by the pressure track.
  • the pressure ring may be a slimmer profile component, which may optionally be composed of several segments.
  • the pressure track is usually flat, so that the grinding balls can roll along the pressure track.
  • the print track is also flat in the transverse direction. There is then only a punctual contact between each grinding balls and the pressure track. It is advantageous, however, if the contact surface between the print track and the grinding balls for a given width of the print track is as large as possible.
  • the pressure trace can therefore have a shape adapted to the outer shape of the grinding balls in the transverse direction.
  • the surface of the Mahlbelag should be designed for a good grinding action. It should be chosen a material that is suitable to withstand the stresses.
  • the Mahlbelag can be arranged on a pressure ring.
  • the Mahlbelag be bolted or riveted to the pressure ring.
  • the connection between the Mahlbelag and the pressure ring is flat, for example by the Mahlbelag is glued to the pressure ring.
  • Mahlbelag materials are often not easy to edit and bring in a particular shape. Instead of forming a single large component, it may be easier to first form several small components and assemble them into a large component.
  • the ball mill according to the invention it is not necessary that the Mahlbelag is formed in a single piece. It has rather shown that the functionality the ball ring mill is not affected when the Mahlbelag is composed of a plurality of tiles. You can choose tiles that span the entire width of the print track. These tiles need only be strung together longitudinally along the pressure track. But also tiles that are narrower than the print track, which must therefore be arranged side by side in the transverse direction of the print track.
  • a housing 1 a in Fig. 1 shown ball mill is arranged on a foundation 2.
  • a shaft 3 is mounted, with a Mahlring 5 is connected.
  • the grinding ring 5 forms a Mahlspur 11, on the grinding balls. 6 rest.
  • a pressure ring 7 is supported via spring elements 8.
  • Mahlbelag 10 is arranged with a pressure track 12. Via the pressure track 12, the pressure ring 7 rests on the grinding balls 6 and exerts a pressure on the grinding balls 6, so that the grinding balls 6 rest on the grinding track 11 with a pressure suitable for the grinding process.
  • About a pipe 9 of the ball mill grinding material can be supplied.
  • a motor 4 drives the shaft 3, so that the grinding ring 5 is set in rotation.
  • the grinding balls 6 are set in motion by the rotating grinding ring 5, so that they roll along the grinding track 11. From the tube 9 emerging ground material falls approximately in the middle of the grinding ring 5 and from there into the Mahlspur 11. From the rolling along the Mahlspur 11 rolling balls 6, the millbase is crushed and passed into the lying outside of the grinding ring 5 annulus. Means may be provided by means of which the not yet sufficiently comminuted material to be ground is returned to the grinding process.
  • the pressure ring 7, the Mahlbelag 10 and the pressure track 12 are slender.
  • the extension of the pressure track 12 in the transverse direction is smaller than a chord 13, which is spanned at a center angle ⁇ of the grinding ball 6.
  • Mahlbelag 10 made of a ceramic material is glued to the pressure ring 7.
  • the surface of Mahlbelags 10, where the pressure track 12 is formed, is adapted to the outer shape of the grinding ball 6.
  • the grinding ball 6 may, in order to keep the wear low, also have a Mahlober configuration ceramic. However, since the grinding balls are generally subject to less wear than the pressure trace, it may also be useful to combine a pressure trace of ceramic with metal grinding balls.
  • the Mahlbelag 10 of the pressure ring 7 is assembled from a plurality of tiles 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Claims (9)

  1. Broyeur à boulets annulaire avec un anneau de broyage (5) définissant une piste de broyage (11), une pluralité de boulets de broyage (6) dimensionnés pour un mouvement de broyage le long de la piste de broyage (11) et une piste de pression (12) qui pousse les boulets de broyage (6) contre la piste de broyage (11), les boulets de broyage (6) reposant sur l'anneau de broyage (5) et la piste de pression (12) reposant sur les boulets de broyage (6), caractérisé en ce qu'une seule piste de pression (12) seulement est prévue et en ce que l'étendue de la seule piste de pression (12) dans la direction transversale est plus petite qu'une corde (13) qui est interceptée par un angle au centre (α) de 40°, de préférence de 25° encore plus préférablement de 15° d'un boulet de broyage (6).
  2. Broyeur à boulets annulaire selon la revendication 1, caractérisé en ce que la piste de pression (12), considérée dans la direction transversale, a une forme adaptée à la forme extérieure du boulet de broyage (6).
  3. Broyeur à boulets annulaire selon la revendication 1 ou 2, caractérisé en ce que la piste de pression (12) est disposée sur un anneau de pression (7).
  4. Broyeur à boulets annulaire selon la revendication 1, caractérisé en ce qu'un revêtement de broyage (10) formant la piste de pression (12) est prévu.
  5. Broyeur à boulets annulaire selon les revendications 3 et 4, caractérisé en ce que le revêtement de broyage (10) est collé à l'anneau de pression (7).
  6. Broyeur à boulets annulaire selon la revendication 4, caractérisé en ce que le revêtement de broyage (10) comporte une pluralité de carreaux (14).
  7. Broyeur à boulets annulaire selon la revendication 4 ou 5, caractérisé en ce que le revêtement de broyage (10) est réalisé en un matériau céramique.
  8. Broyeur à boulets annulaire selon la revendication 7, caractérisé en ce que le matériau céramique est du nitrure de silicium.
  9. Broyeur à boulets annulaire selon la revendication 7, caractérisé en ce que le matériau céramique est du silicium-carbure de silicium (SiSiC).
EP20070018012 2007-09-13 2007-09-13 Moulin à bague de roulement à billes Expired - Fee Related EP2036612B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200750003761 DE502007003761D1 (de) 2007-09-13 2007-09-13 Kugelringmühle
EP20070018012 EP2036612B1 (fr) 2007-09-13 2007-09-13 Moulin à bague de roulement à billes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070018012 EP2036612B1 (fr) 2007-09-13 2007-09-13 Moulin à bague de roulement à billes

Publications (2)

Publication Number Publication Date
EP2036612A1 EP2036612A1 (fr) 2009-03-18
EP2036612B1 true EP2036612B1 (fr) 2010-05-12

Family

ID=39033512

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070018012 Expired - Fee Related EP2036612B1 (fr) 2007-09-13 2007-09-13 Moulin à bague de roulement à billes

Country Status (2)

Country Link
EP (1) EP2036612B1 (fr)
DE (1) DE502007003761D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108262126A (zh) * 2017-04-08 2018-07-10 姜海 一种电动自适应中药研磨装置
CN113600273B (zh) * 2021-08-09 2022-06-17 湖南省新化县鑫星电子陶瓷有限责任公司 一种研磨陶瓷原料的研磨机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE358089C (de) * 1918-05-30 1922-09-05 Smidth & Co As F L Windsichtung in Mahlmaschinen mit zwischen zwei zueinander drehbaren Mahlbahnen beweglichen Mahlkoerpern
DE651638C (de) * 1936-09-05 1937-10-16 Chemische Werke Brockhues Akt Quetschmuehle
ZA765692B (en) * 1976-09-22 1977-12-28 Babcock & Wilcox Africa Improvements in grinders
DE9407444U1 (de) * 1994-05-04 1995-09-07 Claudius Peters Ag, 21614 Buxtehude Mühle

Also Published As

Publication number Publication date
DE502007003761D1 (de) 2010-06-24
EP2036612A1 (fr) 2009-03-18

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