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WO1996032196A1 - Concasseur multiple a percussion combinee - Google Patents

Concasseur multiple a percussion combinee Download PDF

Info

Publication number
WO1996032196A1
WO1996032196A1 PCT/NL1996/000153 NL9600153W WO9632196A1 WO 1996032196 A1 WO1996032196 A1 WO 1996032196A1 NL 9600153 W NL9600153 W NL 9600153W WO 9632196 A1 WO9632196 A1 WO 9632196A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor blade
armour
impact
rim
crush material
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.)
Ceased
Application number
PCT/NL1996/000153
Other languages
English (en)
Inventor
Johannes Petrus Andreas Josephus Van Der Zanden
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.)
IHC Holland NV
Original Assignee
IHC Holland NV
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 IHC Holland NV filed Critical IHC Holland NV
Priority to AU51634/96A priority Critical patent/AU5163496A/en
Publication of WO1996032196A1 publication Critical patent/WO1996032196A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • B02C2013/1857—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 rotating coaxially around the rotor shaft
    • 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
    • B02C2013/1885—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 of dead bed type

Definitions

  • the invention relates to an autogenous impact crusher having a dish-shaped rotor blade which is mounted rotatably about a vertical axis and is provided with shorter or longer guides which are made in straight, bent or buckled construction with a smooth steel guide face or are constructed as a cell-type bucket in which, whenever the rotor blade rotates, under the influence of centrifugal force, crush material pieces can settle and form there a natural guide face in their own right, which guides run from the middle portion, radially or non-radially directed, to the rim of the rotor blade, with which rotor blade granular material which is brought onto the middle of the revolving rotor blade is brought up to speed, under the influence of centrifugal force, along the guides, or through a type thereof, and is slung outward over the rim of the rotor blade and is subsequently conducted at high speed into a trough construction which is disposed around the rotor blade and in which crush material accumulates, whereby a belt of crush material builds up in
  • the grains can develop ⁇ n the rotor blade, along the guides, a radial velocity which is maximally equal to the tangential velocity conforming to the velocity along the outer rim of the rotor blade.
  • the radial and tangential velocity components together determine the velocity vector and the fly-off angle of the granular material at the moment in which it leaves the rotor blade. Should the radial and tangential velocity be equal, the grains, at the moment in which they leave the rotor blade, exhibit a maximum vector velocity and the maximum fly-off angle of 45°.
  • the tangential and radial velocity components amount in this case tu around 70% of the vector velocity. Where the granular material on the rotor blade develops less radial velocity, the fly-off velocity, i.e.
  • the known autogenous impact crushers have the problem that the granular material is conducted into the crush material belt in the horizontal plane from one specific direction, i.e. angle, it being desirable, for the satisfactory activation of the revolving motion of the grains through the crush material belt, that the grain material should be conducted into the crushing space at the shallowest possible angle., i.e. at an angle which is directed as tangentially as possible.
  • the surface of the granular material is subjected to reasonably intensive re-treatment, thereby achieving a very good grain figuration, whilst the granular material, certainly along the surface, is selected for hardness; which re-treatment of previously crushed material gives rise to a crushed product offering very good grain figuration and a hard grain surface.
  • the greatest load upon a grain during impact is obtained when the impact is made at a load angle between 70° and 85°.
  • the maximum fly-off angle of the grains from the rim of the rotor blade amounts under normal circumstances, as previously indicated, to 45°; in which case the impact of the grains in the crush material belt is made at an angle of about 45°.
  • the revolving motion of the granular material through the crush material belt and one which will prevent the impacting granular material, after impact, from being too much led back in the direction of the rim of the rotor blade, whereby the incoming granular material is slowed down before it reaches the crush material belt, whilst the rebounding material can create a high level of wear along the outer wall of the rotor blade, the crush material, in the horizontal plane, must be conducted into the crush material belt at the shallowest possible angle, preferably much less than 45°; which requires that the crush material should leave the rotor blade at a fly-off angle which is directed as tangentially as possible and at a vector velocity which is therefore less than maximal.
  • the crush material should be conducted into the crush material belt at an angle which is somewhat slanted from above, whereby the granular material impacts into the bottom of the crush material belt and is conducted from there towards and along the rear wall, thereby giving rise to an intensive re-treatment process whenever the granular material is conducted horizontally into the crush material and impacts against the vertical rear wall of the crush material.
  • a downward slanted impact angle of this kind cannot however be realized with the horizontally disposed rotor blade.
  • the object of the invention by combining the size-reduction and the autogenous re-treatment processes for the crush material in a single installation, is to separate the fine and the soft components from the crush material before the crush material, for autogenous re-treatment, is conducted at an optimal angle into the crush material belt, thereby making better use of the radial velocity component - and hence of the rotor energy -, whilst the combination of the size-reduction and autogenous re-treatment processes in a single crusher, and sizeable energy savings, so become possible.
  • the invention envisages that the radial and the tangential component of the velocity vector exhibited by the crush material at the moment in which it leaves the rotor blade shall be applied separately; the radial velocity component being used to reduce the size of the material by means of impact loading against a steel surface, after which the crush material, with a velocity vector which is composed of the original tangential velocity component which at that moment is still entirely active and that portion of the radial velocity component which, after the impacts, is still partially active at that moment, is conducted at an optimal angle into a crush material belt for autogenous re-treatment.
  • the impact surfaces of the armour-platings are made in straight construction in the vertical radial plane and are arranged at an angle.
  • the angles which are made by the impact surfaces of the armour-platings in the vertical plane and the level at which the armour-platings are situated around and below the rotor blade are in this case chosen such that as a whole, having left the rotor blade, the individual crush material pieces in the vertical plane, viewed from the revolving crusher, each pass through a downwardly directed zigzag-shaped, multiple-impact path, the impact angles forming an optimal load angle, i.e.
  • the crush material not only makes impact at an optimal load angle, but also, in quick succession, is subjected to multiple loads, giving rise to high fracture probability, whilst the motion of the crush material pieces and the resultant fracture fragments runs through the crushing space, viewed from the rotating position, in a vertical plane.
  • the effect of this is that the individual crush material grains do not obstruct one another as they move through the crushing space and as they impact against the impact surfaces of the armour-platings; and that the crush material pieces each pass through a geometrically identical, multiple- impact path, whereby the wear is limited and a crushed product of constant quality is produced, whilst the soft components of the crush material are completely pulverized during this process.
  • the grains When the crush material leaves the rotor blade, the grains each exhibit a velocity vector made up of a tangential and a radial velocity component. Where it is assumed that the tangential and the radial velocity component are equal, the fly-off angle from the rim of the rotor blade measuring 45°, these velocities each amount to around 70% of the vector velocity.
  • the tangential and the radial velocity component are equal, the fly-off angle from the rim of the rotor blade measuring 45°, these velocities each amount to around 70% of the vector velocity.
  • the radial velocity component is utilized.
  • a velocity vector is active which is made up of the original tangential velocity component and the remnant, after impact, of the radial velocity component. This velocity vector is greater per se than the radial velocity component with which the material has impacted against the steel impact bars of the armour-platings.
  • the fly-off angle In the horizontal plane, the fly-off angle is heavily tangentially directed, at 20° to 25°,
  • the fine parts Prior to the crush material being conducted into the crush material belt, the fine parts, including those soft components which have been pulverized during impact against the armour-platings, are separated as much as possible from the crush material.
  • the invention envisages that obliquely along the bottom of the impact surface of the armour-plating, in the plane along which the fracture material is further conducted after impact, and hence between the impact surface of the second armour- plating and the surrounding crush material belt, there is placed a dividing screen which is adjustable in height and may or may not rotate jointly with the rotor blade.
  • the fracture fragments form in the rebound direction a sort of fan, with the coarse parts at the top of the fan and the fine parts at the bottom of the fan.
  • the invention envisages the possibility that the crusher shall be equipped with a single jointly rotating armour-plating, which is disposed around the rotor blade, the crush material being conducted for autogenous re-treatment via this armour-plating into a crush material belt which is disposed below the rim of the rotor blade with the opening now directed outward, an annular dividing plane being placed between the impact surface of the armour-plating and the crush material belt, so that only the coarse fraction is conducted into the crush material belt
  • the invention envisages that the armour-platings shall be independently or jointly adjustable in relation to the rotor blade, both in the vertical direction and rotatably, so that wear to the armour-platings can be distributed as evenly as possible along the impact surfaces
  • the invention envisages that the rotor blade and the surrounding armour-platings shall be fitted in a housing which rotates jointly with the rotor blade and armour-platings and is in the shape of a flat drum having, in the middle of the top face, an opening through which the crush material is brought onto the middle part of the rotor blade with the aid of a stationary feed hopper, the said flat drum being provided in the bottom face with outlet openings situated below those points on the rim of the rotor blade along which the crush material leaves the rotor blade, whilst the crushing space is divided into a number of chambers by means of partition screens, which are disposed between the guides and run into the bottom of the crushing space,
  • Figure 1 Shows a heavily diagrammatized cross-section through the combined multiple impact crusher, in which the most important components are indicated.
  • Figure 2. Shows a longitudinal section through the combined multiple impact ( rusher according to Figure 1.
  • Figure 3. Shows a longitudinal section through the combined multiple impact crusher according to Figure 1.
  • Figure 4. Shows a heavily diagrammatized cross-section through the combined multiple impact crusher, equipped with one armour-plating, in which the most important components are indicated.
  • Figure 5. shows the angle ( ⁇ ) made by the first armour-plating in the vertical plane.
  • Figure 6. shows the angle ( ⁇ ) made by the second armour-plating in the vertical plane.
  • Figure 1 is reproduced twice so that the respective longitudinal sections can be better read.
  • Figures 1 to 3 depict a crusher housing (7) in which the rotor blade (3) is disposed centrally in the middle.
  • the granular material is metered out through the inlet (8) in the middle (4) of the rotor blade (3) and from there is brought up to speed, under the influence of centrifugal force, along the guides (6), after which the granular material is slung outward at high speed over the rim (5) of the rotor blade (3).
  • the granular material subsequently impacts against the impact surface (11) of a flat armour-plating (10) which is disposed around the rotor blade (3) and rotates jointly with the rotor blade (3), which armour-plating is constructed as a downward-widening conical ring, the angle ( ⁇ ) of the impact surface (11) of which in the vertical plane is chosen such that the impact is made at a load angle between 70° and 85°; at which angle ( ⁇ ) the impact surface (11) of the first armour-plating (10) is arranged.
  • the jointly rotating impact surface (11 ) allows use to be made solely of the radial velocity component of the velocity vector which the material exhibits at the moment in which it leaves the crushing space.
  • the granular material is now collected by the impact surface (14) of a second armour-plating (13), the angle ( ⁇ ) of which in the radial plane ranges between 70° and 110°, which angle is chosen such that the impact is made at the most favourable possible load angle between 70° and 85° and the granular material is conducted onward in a radially outward direction and onward in a vertical plane downward.
  • the rotor blade (2) and the two armour-platings (10; 13) can be disposed in the crusher housing (7) in a jointly rotating crushing space (9) surrounding the rotor blade (3) and the two armour-platings (10; 13).
  • dividing screens (21 ) can be disposed between the guides (6), which dividing screens run through into the bottom of the crushing space (23), thereby dividing the crushing space (23) into a number of crushing chambers, one per guide (6).
  • the fracture material can now roughly be classified, since the grains, when they fragment, develop a specific rebound pattern in the shape of a sort of fracture fragments fan, with the coarse fraction, and the uncrushed or only partially crushed grains, at the top of the fan, and the fine fraction more at the bottom of the fan.
  • the coarse fraction is now conducted over the dividing screen (15) into the trough construction (16), in which the granular material develops a crush material belt (17) against which the further granular material which is conducted into the trough construction (16) impacts and, as a result of collision and friction with other grains, partially fragments, but, above all, is worked along the surface.
  • the material is thereafter conducted outward over the rim of the trough construction (16) and collected in the bottom of the crusher.

Landscapes

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

Abstract

La présente invention concerne un concasseur multiple à percussion combinée, caractérisé en ce que le matériau granulaire est projeté vers l'extérieur par dessus le bord de la pale rotor (3), vient percuter une plaque de blindage (10) tournant solidairement avec la pale rotor et présentant une surface de percussion de forme conique, et est acheminée à l'oblique vers le bas, dans la direction radiale d'une seconde plaque de blindage (13) tournant solidairement avec la pale rotor et présentant une surface de percussion conique placée sous le bord de la pale. Après percussion, la fraction grossière et la fraction fine des fragments de fracture qui en résultent sont séparées par un crible diviseur (15) ajustable en hauteur, placé autour de la surface de percussion de la seconde plaque de blindage. Ensuite, les fragments grossiers de fracture, qui sont acheminés par dessus le bord du crible diviseur, sont collectés dans une courroie de transport de matériau de concassage autogène placée dans une construction en forme d'auge (16) montée autour du crible diviseur (15).
PCT/NL1996/000153 1995-04-11 1996-04-10 Concasseur multiple a percussion combinee Ceased WO1996032196A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU51634/96A AU5163496A (en) 1995-04-11 1996-04-10 Combined multiple impact crusher

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1000116 1995-04-11
NL1000116A NL1000116C2 (nl) 1995-04-11 1995-04-11 Gecombineerde meervoudige inslagbreker.

Publications (1)

Publication Number Publication Date
WO1996032196A1 true WO1996032196A1 (fr) 1996-10-17

Family

ID=19760865

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1996/000153 Ceased WO1996032196A1 (fr) 1995-04-11 1996-04-10 Concasseur multiple a percussion combinee

Country Status (3)

Country Link
AU (1) AU5163496A (fr)
NL (1) NL1000116C2 (fr)
WO (1) WO1996032196A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0835690A1 (fr) 1996-10-11 1998-04-15 Van der Zanden, Johannes Petrus Andreas Josephus Procédé et dispositif de broyage par la collision synchronisée de matériau
EP1084751A1 (fr) * 1999-09-20 2001-03-21 Van der Zanden, Johannes Petrus Andreas Josephus Procédé et dispositif de broyage par collision synchronisée et symmétrique
WO2004112963A3 (fr) * 2003-06-23 2005-03-17 Aerosion Ltd Dispositif et procede de dilaceration de materiaux
US7530513B2 (en) 2001-10-18 2009-05-12 Aerosion, Ltd. Apparatus and methodology for comminuting materials
CN104328703A (zh) * 2014-10-29 2015-02-04 长沙正达轻科纸业设备有限公司 一种造纸厂用水力碎浆机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919864A (en) * 1956-12-27 1960-01-05 Benjamin J Parmele Centrifugal pulverizer
US4844354A (en) * 1988-03-05 1989-07-04 Nakayama Iron Works Centrifugal refining crusher
JPH02122841A (ja) * 1988-10-31 1990-05-10 Kurimoto Ltd 竪型衝撃式破砕機
JPH0596194A (ja) * 1991-10-07 1993-04-20 Nakayama Tekkosho:Kk 堅型破砕機における破砕方法
DE9308860U1 (de) * 1993-06-10 1994-10-20 Dichter, Hans-Joachim, 10829 Berlin Prallbrecher

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919864A (en) * 1956-12-27 1960-01-05 Benjamin J Parmele Centrifugal pulverizer
US4844354A (en) * 1988-03-05 1989-07-04 Nakayama Iron Works Centrifugal refining crusher
JPH02122841A (ja) * 1988-10-31 1990-05-10 Kurimoto Ltd 竪型衝撃式破砕機
JPH0596194A (ja) * 1991-10-07 1993-04-20 Nakayama Tekkosho:Kk 堅型破砕機における破砕方法
DE9308860U1 (de) * 1993-06-10 1994-10-20 Dichter, Hans-Joachim, 10829 Berlin Prallbrecher

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 334 (C - 0742) 18 July 1990 (1990-07-18) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 436 (C - 1096) 12 August 1993 (1993-08-12) *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0835690A1 (fr) 1996-10-11 1998-04-15 Van der Zanden, Johannes Petrus Andreas Josephus Procédé et dispositif de broyage par la collision synchronisée de matériau
EP1084751A1 (fr) * 1999-09-20 2001-03-21 Van der Zanden, Johannes Petrus Andreas Josephus Procédé et dispositif de broyage par collision synchronisée et symmétrique
WO2001021313A1 (fr) * 1999-09-20 2001-03-29 Van Der Zanden, Rosemarie, Johanna Dispositif permettant les collisions de matieres de maniere synchrone et symetrique
AU754157B2 (en) * 1999-09-20 2002-11-07 Ihc Holland N.V. Device for synchronously and symmetrically making material collide
US6802466B1 (en) 1999-09-20 2004-10-12 Rosemarie Johanna Van Der Zanden Device for synchronously and symmetrically making material collide
US7207513B2 (en) 2001-10-18 2007-04-24 Aerosion Ltd. Device and method for comminuting materials
US7530513B2 (en) 2001-10-18 2009-05-12 Aerosion, Ltd. Apparatus and methodology for comminuting materials
WO2004112963A3 (fr) * 2003-06-23 2005-03-17 Aerosion Ltd Dispositif et procede de dilaceration de materiaux
CN104328703A (zh) * 2014-10-29 2015-02-04 长沙正达轻科纸业设备有限公司 一种造纸厂用水力碎浆机

Also Published As

Publication number Publication date
NL1000116C2 (nl) 1996-10-14
AU5163496A (en) 1996-10-30

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