EP1305116B1 - Schlagleiste für eine vertikale schleudermühle und herstellungsverfahren - Google Patents

Schlagleiste für eine vertikale schleudermühle und herstellungsverfahren Download PDF

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Publication number
EP1305116B1
EP1305116B1 EP00951123A EP00951123A EP1305116B1 EP 1305116 B1 EP1305116 B1 EP 1305116B1 EP 00951123 A EP00951123 A EP 00951123A EP 00951123 A EP00951123 A EP 00951123A EP 1305116 B1 EP1305116 B1 EP 1305116B1
Authority
EP
European Patent Office
Prior art keywords
pockets
wear
ceramic
throw
throw shoe
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
EP00951123A
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English (en)
French (fr)
Other versions
EP1305116A1 (de
Inventor
Claude Poncin
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.)
Magotteaux International SA
Original Assignee
Magotteaux International SA
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Filing date
Publication date
Application filed by Magotteaux International SA filed Critical Magotteaux International SA
Publication of EP1305116A1 publication Critical patent/EP1305116A1/de
Application granted granted Critical
Publication of EP1305116B1 publication Critical patent/EP1305116B1/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
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C13/1814—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed on top of a disc type rotor
    • B02C13/1828—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed on top of a disc type rotor with dead bed protected beater or impeller elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C13/1835—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed in between an upper and lower rotor disc
    • B02C13/1842—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed in between an upper and lower rotor disc with dead bed protected beater or impeller elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
    • B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers

Definitions

  • the present invention relates to an impactor (also called ejector or “impeller”), intended for so-called vertical shaft impact crushers (VSI), that is to say centrifugal crushers with vertical axis and having a reinforcing structure.
  • VSI vertical shaft impact crushers
  • the crushers of the aforementioned type are well known and widely used to crush aggregates of rocks, among others in quarries and cement plants.
  • Centrifugal crushers include a cylindrical vessel in which is arranged a rotary table which is supported by a vertical bearing and which includes means to turn the table around the central axis of the crusher.
  • the crusher has a series of impactors or ejectors attached to the rotary table, as well as a series of anvils arranged on the inner vertical wall of the cylindrical tank around the rotary table.
  • the impactor is most often the shape of a parallelepiped generally made of cast iron which is fixed on the rotary table of the crusher.
  • the face of the impactor which is directed towards the axis of rotation of the table is called the nose of the impactor, while the face opposite the anvils fixed on the cylindrical tank form the exit face of the impactor.
  • the front face of the impactor called the face of work is the one that meets the material to be crushed and which in the direction of rotation of the impactor precedes the back side.
  • This front working face of the impactor may be provided with one or more cavities which do not go through the whole structure of the impactor and that form pockets that fill with material during the rotation of the crusher and thus protect the impactor of shocks and wear, under the effect of the matter accumulated in the pockets.
  • the material to crush is poured into the center of the rotary table by known means. Under the effect of centrifugal force and under the impact with said working face, the material is projected towards the anvils on which it crushes to fall, in crushed form, at the bottom of crusher from where it is evacuated.
  • the impactors are subjected to solicitations very important and are therefore subject to wear fast.
  • the pocket impactors used allow in some applications, by accumulating matter in the pockets, to significantly increase the lifespan of the impactors.
  • the support consisting of grains ceramics and binder must be thoroughly infiltrated by the metal.
  • the thin walls are particularly exposed to the most or foreign bodies (pieces of steel, teeth of shovels, etc.).
  • the invention aims to solve the problems mentioned above and, in particular, to further improve the performance of impactors taking advantage of the benefits intrinsic aspects of the manufacturing technology of impactors described in WO99 / 47264.
  • the invention proposes an impactor intended for centrifugal crushers with a vertical axis which, at the different from those of the state of the art mentioned above, deliberately involves initially, that is to say during the first commissioning, no cavities or pockets but which is provided on its working side with a reinforcing structure made of a composite material obtained from an iron-based alloy and grains of very wear-resistant ceramic and formed in situ at the casting of the impactor by infiltration of the liquid metal used to form the body of the piece in a mass of ceramic grains and binder.
  • Said reinforcement structure is provided on the working face according to an adequate geometric arrangement in order to let the metal out flush locally (ie in areas without reinforcement structure) until the surface of the work, so that the wear in service automatically causes the formation of pockets or cavities which, when filling with crushed material, exert a shock protection function, while maintaining the reinforcing structure at the upper periphery of the pockets which are thus formed, that is to say on the surface of job.
  • the amount of metal available for to infiltrate the support is, in the case of the invention, the all the metal constituting the piece instead of being only the metal constituting a simple wall. Moreover, we can introduce a thicker reinforcement where it is judged necessary because we are in better conditions infiltration because we have more mass significant amount of liquid metal.
  • the technique of the invention significantly improves the service life as soon as the formation of the pockets is initiated, we already benefit from self-protection due to the material retained in these pockets Training.
  • the progression of the formation of the pockets is slowed down and when we get to the training complete of these, we have gained in life the entire time required for this training.
  • the invention incorporates the specific advantages described in the document WO99 / 47264 of a reinforcing structure, consisting of a composite material, obtained in situ by the infiltration of a liquid metal in a ceramic mass with the facilities and advantages of producing a piece without the obligation to provide one or more pockets.
  • the process used is particularly simple to implement since it is sufficient to fix in the bottom of a mold, by conventional means such as gluing, mechanical fastening, nails, screws, anchor rods or others according to the geometrical arrangement allow later formation of one or more wear pockets, a ceramic material lining wear-resistant technique, preferably in the form of of a mass of ceramic grains based on alumina and zirconia and a binder, and then sink the mass metal used to form the body of the impactor. This metal by infiltrating the ceramic mass ensures its perfect bonding with the casting during cooling of the room. Then just unmold the piece and, after any finishing (deburring etc.), the impactor can be directly put into service.
  • a classic pocket impactor 1 according to the FIG. 1 comprises one or more pockets, in this case the two pockets 2 and 2 'made of foundry, before setting in use of the impactor 1.
  • This impactor comprises advantageously reinforcements 4 infiltrated ceramic.
  • the impactor 1 is designed before the commissioning as a solid piece, without pockets on his working face 5, but provided with reinforcements 4 made of foundry. These reinforcements can be arranged, as represented in the view of FIG. 2, according to a shape and a provision similar to those provided in the figure 1, if one wishes to form in service two pockets. Good heard, depending on the aims pursued, other forms and arrangements are possible.
  • Figure 3 illustrates the evolution in service (progression I, II and III) of the pocket profile training, resulting from the presence of reinforcements 4 before the commissioning of the room.
  • the intermediate reinforcement is shown separating in FIG. 1, the pockets 2 and 2 'and common to these, and the corresponding intermediate reinforcement in Figure 2 (and in Figure 3) as having the same thickness.
  • the intermediate reinforcement is limited in thickness because it is, in this case, particularly difficult to infiltrate the ceramic material totally in its mass by the metal, whereas this difficulty does not appear, in the case of Figure 2, because of the "full" character of the room formed by casting.
  • the invention therefore provides a simple solution to different technical problems of realization impactors, in particular greater freedom of design of these.
  • the execution of the technique recommended is more inexpensive.
  • the cost of melting additional use is largely offset by increased operating time, ease of operation and the absence of any need for specific means to create the pockets during the casting of the piece.
  • Extra reinforcements for the nose and the exit face of the impactor, as shown 8 in figure 1, may also be provided in the embodiment of the invention, in particular of Figure 2 and 3. They are not represented, only for the sake of clarity of the drawing.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Tunnel Furnaces (AREA)
  • Secondary Cells (AREA)
  • Ceramic Capacitors (AREA)
  • Centrifugal Separators (AREA)

Claims (7)

  1. Stoßkörper für Rotorschleudermühlen mit vertikaler Achse, der auf seiner Arbeitsseite (5) mit einer Verstärkungsstruktur (4) versehen ist, die aus einem Verbundmaterial besteht, das aus einer Legierung auf Eisenbasis und sehr verschleißfesten Keramikkörnern durch Infiltration der Metallschmelze, die das Gehäuse des Bauteils bildet in eine Masse aus Keramikkörnern und Bindemittel beim Gießen des Stoßkörpers in situ hergestellt wird, dadurch gekennzeichnet, dass er zu Beginn, d.h. bei seiner ersten Inbetriebnahme, keine Hohlräume oder Kammern aufweist.
  2. Stoßkörper nach Anspruch 1, dadurch gekennzeichnet, dass die besagte Verstärkungsstruktur (4) auf der Arbeitsseite (5) gemäß einer geeigneten geometrischen Anordnung vorgesehen ist, damit das Metall stellenweise bis zur Arbeitsfläche (5) reicht, so dass durch den Verschleiß während des Betriebs automatisch Kammern oder Hohlräume geformt werden, die dadurch, dass sie sich mit Brechgut füllen, eine Prallschutzfunktion ausüben und gleichzeitig die keramische Verstärkungsstruktur am oberen Außenrand der so geformten Kammern an der Arbeitsfläche erhalten.
  3. Stoßkörper nach Anspruch 2, dadurch gekennzeichnet, dass er eine Verstärkungsstruktur (4) aufweist, deren Form und Anordnung so gestaltet sind, dass sie bei der Abnutzung im Betrieb zur Bildung von mindestens einer Kammer führt.
  4. Stoßkörper nach Anspruch 3, dadurch gekennzeichnet, dass er eine Verstärkungsstruktur (4) aufweist, deren Form und Anordnung so gestaltet sind, dass sie bei der Abnutzung im Betrieb zur Bildung von mindestens zwei Kammern führt.
  5. Stoßkörper nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Keramikkörner Körner auf der Basis von Aluminiumoxid und Zirkonoxid sind.
  6. Verfahren zur Herstellung eines Stoßkörpers nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass im Boden einer Gussform ein verschleißfester Einsatz aus Keramikmaterial, der durch eine Metallschmelze infiltrierbar ist, je nach gewünschter geometrischer Anordnung im Hinblick auf die spätere verschleißbedingte Ausbildung einer oder mehrerer Kammern befestigt wird und dass dann eine Metallmasse, die das Gehäuse des Stoßkörpers bildet, so gegossen wird, dass sie in den nicht mit Keramikmaterial ausgekleideten Bereichen bis zur Arbeitsfläche reicht und dass nach der Verbindung des Keramikeinsatzes mit der Metallmasse durch Abkühlung das Teil, das den Stoßkörper bildet, aus der Form genommen wird.
  7. Verwendung der Stoßkörper nach einem der Ansprüche 1 bis 5, oder die durch das Verfahren nach Anspruch 6 hergestellt werden, in Rotorschleudermühlen mit vertikaler Achse bei allmählicher Bildung von Kammern durch den Verschleiß des Materials, das nicht durch die Verstärkungsstruktur auf der Arbeitsfläche geschützt ist, im Betrieb.
EP00951123A 2000-08-02 2000-08-02 Schlagleiste für eine vertikale schleudermühle und herstellungsverfahren Expired - Lifetime EP1305116B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BE2000/000091 WO2002009878A1 (fr) 2000-08-02 2000-08-02 Impacteur destine a des concasseurs centrifuges a axe vertical et procede de production

Publications (2)

Publication Number Publication Date
EP1305116A1 EP1305116A1 (de) 2003-05-02
EP1305116B1 true EP1305116B1 (de) 2005-04-06

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ID=3862548

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00951123A Expired - Lifetime EP1305116B1 (de) 2000-08-02 2000-08-02 Schlagleiste für eine vertikale schleudermühle und herstellungsverfahren

Country Status (16)

Country Link
EP (1) EP1305116B1 (de)
JP (1) JP4084996B2 (de)
KR (1) KR100672270B1 (de)
CN (1) CN1246080C (de)
AT (1) ATE292520T1 (de)
AU (2) AU6417700A (de)
CA (1) CA2412314C (de)
CZ (1) CZ298653B6 (de)
DE (1) DE60019346T2 (de)
ES (1) ES2235923T3 (de)
HU (1) HU226990B1 (de)
MX (1) MXPA03001000A (de)
PL (1) PL195796B1 (de)
PT (1) PT1305116E (de)
SK (1) SK286255B6 (de)
WO (1) WO2002009878A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100561914B1 (ko) 2005-12-28 2006-03-20 허홍순 로터의 마모부재 및 이를 갖는 수직축 임팩트 크러셔
US8657220B2 (en) 2008-07-08 2014-02-25 Johannes P. A. J. Van der Zanden Rotor with closed centre space and cover member
CN101884948B (zh) * 2010-06-24 2013-05-15 昆明理工大学 一种复合球磨机衬板及其制备方法
CN117920393B (zh) * 2024-03-23 2024-05-28 大庆师范学院 一种分散式纳米材料生产用研磨装置及其使用方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63143949A (ja) * 1986-12-09 1988-06-16 アイエヌジ商事株式会社 粉砕機に使用される破砕面部材
US5328776A (en) * 1993-01-04 1994-07-12 Michail Garber Abrasion and impact resistant composite castings and wear resistant surface provided therewith
BE1011841A3 (fr) * 1998-03-17 2000-02-01 Magotteaux Int Ejecteur a une ou plusieurs poche(s).

Also Published As

Publication number Publication date
PL364776A1 (en) 2004-12-13
CN1454117A (zh) 2003-11-05
AU6417700A (en) 2002-02-13
HUP0301785A2 (en) 2003-09-29
AU2000264177B2 (en) 2005-12-15
SK17672002A3 (sk) 2003-05-02
CZ298653B6 (cs) 2007-12-05
KR20030014419A (ko) 2003-02-17
MXPA03001000A (es) 2004-08-02
PT1305116E (pt) 2005-06-30
HU226990B1 (en) 2010-04-28
DE60019346D1 (de) 2005-05-12
ATE292520T1 (de) 2005-04-15
JP2004504147A (ja) 2004-02-12
WO2002009878A1 (fr) 2002-02-07
CA2412314C (en) 2007-10-23
SK286255B6 (sk) 2008-06-06
DE60019346T2 (de) 2006-03-09
KR100672270B1 (ko) 2007-01-24
PL195796B1 (pl) 2007-10-31
CZ20024016A3 (cs) 2003-04-16
CN1246080C (zh) 2006-03-22
EP1305116A1 (de) 2003-05-02
ES2235923T3 (es) 2005-07-16
JP4084996B2 (ja) 2008-04-30
CA2412314A1 (en) 2002-02-07

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