EP1305116B1 - Impacteur destine a des concasseurs centrifuges a axe vertical et procede de production - Google Patents
Impacteur destine a des concasseurs centrifuges a axe vertical et procede de production Download PDFInfo
- 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
Links
Images
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.
Description
- Figure 1 : une vue en perspective d'un impacteur à poches selon l'état de la technique, avec renfort en céramique infiltrée par du métal ;
- Figure 2 : une vue en perspective d'un impacteur avec le même type de renfort et sans poches, suivant la présente invention ;
- Figure 3 : une vue en coupe longitudinale d'un impacteur suivant la figure 2 avec le tracé évolutif du profil des poches lors de leur formation.
Claims (7)
- Impacteur destiné à des concasseurs centrifuges à axe vertical, pourvu sur sa face de travail (5) d'une structure de renfort (4) constituée d'un matériau composite obtenu à partir d'un alliage à base de fer et de grains de céramique très résistants à l'usure et formée in situ à la coulée de l'impacteur par infiltration du métal liquide servant à former le corps de la pièce dans une masse de grains céramiques et de liant, caractérisé en ce qu'il ne comporte initialement, c'est-à-dire lors de la première mise en service, pas de cavités ou poches.
- Impacteur selon la revendication 1, caractérisé en ce que ladite structure de renfort (4) est prévue sur la face de travail (5) selon une disposition géométrique adéquate afin de laisser le métal affleurer localement jusqu'à la surface de travail (5), de manière que l'usure en service provoque automatiquement la formation de poches ou cavités qui, en se remplissant de matière broyée, exercent une fonction de protection aux chocs tout en maintenant la structure de renfort céramique à la périphérie supérieure des poches qui se forment ainsi, à la surface de travail.
- Impacteur selon la revendication 2, caractérisé en ce qu'il comporte une structure de renfort (4) dont la forme et la disposition sont telles qu'elle entraíne , lors de l'usure en service, la formation d'au moins une poche.
- Impacteur selon la revendication 3, caractérisé en ce qu'il comporte une structure de renfort (4) dont la forme et la disposition sont telles qu'elle entraíne, lors de l'usure en service, la formation d'au moins deux poches.
- Impacteur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les grains de céramique sont des grains à base d'alumine et de zircone.
- Procédé de production d'un impacteur selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'on fixe dans le fond d'un moule, selon la disposition géométrique voulue pour permettre ultérieurement la formation d'une ou plusieurs poches par usure, une garniture de matière céramique résistante à l'usure, infiltrable par un métal fondu et qu'on coule ensuite la masse métallique servant à constituer le corps de l'impacteur de manière qu'elle affleure jusqu'à la surface de travail dans les zones non garnies de matière céramique et, qu'après solidarisation de la garniture de matière céramique infiltrée avec la masse métallique par refroidissement, on procède au démoulage de la pièce formant l'impacteur.
- Utilisation des impacteurs selon l'une quelconque des revendications 1 à 5, ou obtenus par le procédé de la revendication 6, dans des concasseurs centrifuges à axe vertical en formant progressivement des poches par usure en service de sa matière constitutive non protégée par la structure de renfort sur la face de travail.
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 (fr) | 2003-05-02 |
EP1305116B1 true EP1305116B1 (fr) | 2005-04-06 |
Family
ID=3862548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00951123A Expired - Lifetime EP1305116B1 (fr) | 2000-08-02 | 2000-08-02 | Impacteur destine a des concasseurs centrifuges a axe vertical et procede de production |
Country Status (16)
Country | Link |
---|---|
EP (1) | EP1305116B1 (fr) |
JP (1) | JP4084996B2 (fr) |
KR (1) | KR100672270B1 (fr) |
CN (1) | CN1246080C (fr) |
AT (1) | ATE292520T1 (fr) |
AU (2) | AU2000264177B2 (fr) |
CA (1) | CA2412314C (fr) |
CZ (1) | CZ298653B6 (fr) |
DE (1) | DE60019346T2 (fr) |
ES (1) | ES2235923T3 (fr) |
HU (1) | HU226990B1 (fr) |
MX (1) | MXPA03001000A (fr) |
PL (1) | PL195796B1 (fr) |
PT (1) | PT1305116E (fr) |
SK (1) | SK286255B6 (fr) |
WO (1) | WO2002009878A1 (fr) |
Families Citing this family (3)
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 |
WO2010005287A1 (fr) | 2008-07-08 | 2010-01-14 | Synside Maatschap | Rotor avec espace central fermé et élément de couvercle |
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 |
Family Cites Families (3)
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). |
-
2000
- 2000-08-02 WO PCT/BE2000/000091 patent/WO2002009878A1/fr active IP Right Grant
- 2000-08-02 AU AU2000264177A patent/AU2000264177B2/en not_active Ceased
- 2000-08-02 CZ CZ20024016A patent/CZ298653B6/cs not_active IP Right Cessation
- 2000-08-02 PL PL00364776A patent/PL195796B1/pl not_active IP Right Cessation
- 2000-08-02 CA CA002412314A patent/CA2412314C/fr not_active Expired - Fee Related
- 2000-08-02 DE DE60019346T patent/DE60019346T2/de not_active Expired - Lifetime
- 2000-08-02 MX MXPA03001000A patent/MXPA03001000A/es active IP Right Grant
- 2000-08-02 KR KR1020037000067A patent/KR100672270B1/ko not_active IP Right Cessation
- 2000-08-02 JP JP2002515420A patent/JP4084996B2/ja not_active Expired - Fee Related
- 2000-08-02 EP EP00951123A patent/EP1305116B1/fr not_active Expired - Lifetime
- 2000-08-02 ES ES00951123T patent/ES2235923T3/es not_active Expired - Lifetime
- 2000-08-02 CN CNB008197660A patent/CN1246080C/zh not_active Expired - Fee Related
- 2000-08-02 AT AT00951123T patent/ATE292520T1/de active
- 2000-08-02 AU AU6417700A patent/AU6417700A/xx active Pending
- 2000-08-02 SK SK1767-2002A patent/SK286255B6/sk not_active IP Right Cessation
- 2000-08-02 HU HU0301785A patent/HU226990B1/hu not_active IP Right Cessation
- 2000-08-02 PT PT00951123T patent/PT1305116E/pt unknown
Also Published As
Publication number | Publication date |
---|---|
SK286255B6 (sk) | 2008-06-06 |
SK17672002A3 (sk) | 2003-05-02 |
CZ298653B6 (cs) | 2007-12-05 |
PL195796B1 (pl) | 2007-10-31 |
CZ20024016A3 (cs) | 2003-04-16 |
JP4084996B2 (ja) | 2008-04-30 |
CN1454117A (zh) | 2003-11-05 |
HUP0301785A2 (en) | 2003-09-29 |
JP2004504147A (ja) | 2004-02-12 |
PT1305116E (pt) | 2005-06-30 |
PL364776A1 (en) | 2004-12-13 |
DE60019346D1 (de) | 2005-05-12 |
DE60019346T2 (de) | 2006-03-09 |
AU2000264177B2 (en) | 2005-12-15 |
KR100672270B1 (ko) | 2007-01-24 |
KR20030014419A (ko) | 2003-02-17 |
CA2412314A1 (fr) | 2002-02-07 |
ES2235923T3 (es) | 2005-07-16 |
AU6417700A (en) | 2002-02-13 |
ATE292520T1 (de) | 2005-04-15 |
EP1305116A1 (fr) | 2003-05-02 |
MXPA03001000A (es) | 2004-08-02 |
CA2412314C (fr) | 2007-10-23 |
HU226990B1 (en) | 2010-04-28 |
WO2002009878A1 (fr) | 2002-02-07 |
CN1246080C (zh) | 2006-03-22 |
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