Abstract: The invention relates to a crusher, in particular a rotary impact crusher, cone crusher or jaw crusher, having a crusher unit (10), which has a movable first crusher body (11), in particular a rotor or a crusher jaw, wherein a second crusher body (14), in particular an impact rocker or a crusher jaw, is assigned to the first crusher body (11), wherein a crushing gap (15) is formed between the crusher bodies (11, 14), wherein an overload triggering device (30) is coupled to the first crusher body or to the second crusher body, which overload triggering device has a hydraulic cylinder (20) and which overload triggering device is designed to permit a motion of the coupled crusher body (11, 14) increasing the width of the crushing gap (15), wherein the hydraulic cylinder (20) has a pressure chamber (24), which is delimited by means of a piston (23), and wherein the overload triggering device (30) has a pressure valve (31) which, in its open position, establishes a fluid-conveying connection between the pressure c

Abstract: A grinding device for containers dispensing food products, which includes means for selectively adjusting the distance between blades and teeth and thereby selecting at will the desired grain size for grinding. The device has a static piece that is coupled to the neck of the container and is connected to a rotary piece such that the fixed piece includes a series of teeth which, together with blades projecting from the bottom face of the rotary piece, constitute the grinding mechanism of the device. The device includes, on the outside of the fixed piece, two or more channels that guide the rotation and axial retention of the rotary piece, while the rotary piece contains projections for fitting into the channels of the fixed piece.

Abstract: Disclosed embodiments include diesel-electric powered, substantially heavier (e.g., 120 ton), larger (e.g., 11? 8? and 12? 6? diameter wheels), and more powerful (e.g., 250-350 hp per wheel) landfill compactors. Disclosed embodiments also include an integral hammer mill, oriented in an “upside-down” configuration to additionally compact landfill waste.

Abstract: A tool for tilling and comminuting in a tool carrier with rotor which is rotatable about the rotor axis, the tool is received in a receptacle of the tool carrier arranged on the rotor. The receptacle is formed by a first face provided in the cutting direction and second face on which the tool is fastened by means of its face which faces away from the cutting direction, the tool has a body which has an end face in the direction of rotation of the rotor and a rear face opposite the end face. The rear face is inclined by 1° to 10° with respect to the end face and the tool is braced and held between the face in the cutting direction of the receptacle and the face of the receptacle that faces away from the cutting direction, play is left between the tool and receptacle base.

Abstract: Implementations of the present invention relate to devices, systems, and methods for isolating electronic components from input vibrations. The vibration isolation device may passively isolate the housed electronics from substantially all input vibrations. The vibration isolation device may include elastic members to suspend the electronic components within a support frame such that input vibrations are unable to directly influence the electronic components.

Abstract: A hammer tip for releasable integration with a hammer, used in a size reducing machine. The hammer tip is separated into a production block with a top working edge and a spacer block. The production block and spacer block utilize a saddle back attachment to the hammer. The production block is further supported with a lock ledge integration to the spacer block. The production block with a single top working edge reduces maintenance cost, reduces downtime and improves machine throughput.

Abstract: A method for preheating a beater mill is provided. The method includes: rotating a beater wheel disposed within the beater mill to facilitate circulation of a gas stream between the beater mill and a furnace fluidly connected to each other via both a pulverized fuel conduit and a flue gas recirculation conduit; generating a burner gas via a burner disposed within the flue gas recirculation conduit such that the burner gas joins and heats the gas stream circulating through the beater mill and the furnace; and adjusting at least one of an air supply and a fuel supply to the burner via a controller based at least in part on one of a temperature of the gas stream at an entrance of the beater mill, a temperature of the gas stream at an exit of the beater mill, and an oxygen level within the beater mill.

Abstract: An apparatus for cutting polymer includes a rotor having a base with a first side and a second side opposite the first side. The rotor includes an outer annular wall extending from the first side and defining a number of slots, an inner annular wall defining a number of slots and extending from the first side and surrounded by, and spaced apart from, the outer annular wall. The rotor also includes blades extending from the first side and positioned within the inner annular wall. A circular-shaped stator also defines a number of slots. At least a portion of the stator is positioned in a space between the outer annular wall and the inner annular wall of the rotor.

Abstract: An impact crusher for crushing a feed material received through an opening of the crusher is provided. The crusher includes: a housing defining a crushing chamber; at least one elevation adjustable impact barrier mounted in the crushing chamber; a barrier adjustment mechanism configured to adjust an elevation of the at least one impact barrier within the crushing chamber; and a rotor mounted in the crushing chamber and turned by a drive mechanism. The rotor is configured to direct feed material toward the at least one impact barrier. The bather adjustment mechanism includes at least one hydraulic cylinder mounted to the at least one impact barrier. The cylinder includes a sensor for detecting an absolute extension of the cylinder. A system for crushing a crushable material including an impact crusher and controller is also provided herein.

Abstract: A solid surface comprises (i) a crosslinked acrylic or unsaturated polyester resin present in an amount no greater than 51 or 52 volume fraction percent, and (ii) no greater than 48 or 49 volume fraction percent of inorganic filler particles that are modified with discrete functional particles that are bound, or adhered to the filler particles, the filler particles being distributed evenly throughout the solid surface wherein (a) 95-99 volume fraction percent of the filler particles has a major dimension in the range of from 0.5 to no greater than 10 microns, (b) the D50 of the filler particles is from 0.5-2.5 microns, (c) the D90 of the filler particles is equal to or less than 10 microns and (d) the filler particles are modified with discrete functional particles that are bound, or adhered to the filler particles.

Abstract: A defibration unit includes a rotating unit and a fixing unit. The rotating unit and the fixing unit are arranged so as to be apart from each other with a gap therebetween in a direction that intersects with a rotating shaft of the rotating unit. The fixing unit includes a plurality of plates that are layered in an axial direction of the rotating shaft, and the plates has a plurality of convexities that protrude at a side facing the rotating unit.

Abstract: Shredder hammers having first and second major surfaces on opposing sides, and a circumferential edge. A mounting portion includes a mounting hole that extends from the first major surface to the second major surface, and is configured to receive a hammer mounting pin for mounting in a reducing system. The circumferential edge includes a primary impact face to initially impact materials to be reduced and a wear edge to subsequently crush and shear the material against a wall of the equipment. The hammer is biased forward on the pin to admit more material to be crushed between the wear edge and the grates.

Abstract: The impact shield (9, 10) carries a plurality of armor bodies (16) of a strongly wear resisting material. The armor bodies (16) are fixed horizontally in succession on a front side of the impact shield by a fixing element making it possible to detach them from the impact shield (9, 10) for their replacement. The impact shield (9, 10) is composed of a fixed part (21) connected to the frame (2), and a removable part (22) carrying the armor bodies (16) and making it possible to remove simultaneously all the armor bodies, fixed on the same, out of the grinding chamber (3). At least one such impact shield (9, 10) is arranged in a grinding chamber (3) of an impact grinding mill including a frame (2) further including a horizontal-axis rotor (6) provided with impactors (7) arranged regularly around its periphery.

Abstract: A defibrating unit includes a rotating unit and a fixing unit. The rotating unit and the fixing unit are arranged so as to be apart from each other with a gap therebetween in an intersecting direction that intersects with a rotating shaft of the rotating unit. The rotating unit includes a surface that stands up along an axial direction of the rotating shaft and that is arranged on a side section in the axial direction and arranged at a side where a defibration object is introduced. The fixing unit includes a plurality of plates that are layered in the axial direction, and the plates has a plurality of convexities that protrude at a side facing the rotating unit.

Abstract: A bale shredder apparatus may comprise a frame and a bale hopper mounted on the frame and defining an interior bale chamber for receiving a bale to be shredded with a bale feed opening. A bale shredding assembly may be in communication with the bale chamber through the opening to shred a bale in the bale chamber. A side wall of the hopper may be movable away from the primary side wall to permit removal of a bale from the bale chamber. A primary bale movement assembly may move a bale in a lateral direction toward the opening and a secondary bale movement assembly may move the bale in a direction substantially transverse to the lateral direction. A shredding rotor of the shredding assembly may include at least one brace including at least one leg extending outwardly from the outer surface of the rotor.

Abstract: A hopper configuration comprises a hopper tray configured to receive a material from a source. The hopper configuration also comprises a conveyance mechanism configured to transport the received material from the hopper tray. The hopper configuration also comprises a first bar pivotably coupled to the hopper tray at a first point and also pivotably coupled to the conveyance mechanism at a second connection point. The hopper configuration further comprises a second bar pivotably coupled to the hopper tray at a third connection point and also pivotably coupled to the conveyance mechanism at a fourth connection point. Each of the connection points comprises a pivot point that substantially limits movement of the first and second bar to movement in a rotational direction.

Abstract: The invention pertains to a process for manufacturing a filled polymeric material comprising a polymeric matrix and filler modified with functional particles in a high energy dry-blending process through collisions of sufficient energy to bound, adhere, or otherwise associate the pigment particles to the filler.

Abstract: The invention pertains to filler modified with functional particles in a dry-blending process through collisions of sufficient energy to bound, adhere, or otherwise associate the pigment particles to the filler, and a filled polymeric material manufactured with the modified filler.

Abstract: The invention pertains to a process for manufacturing filler modified with functional particles in a high energy blending process through collisions of sufficient energy to bound, adhere, or otherwise associate the pigment particles to the filler.

Abstract: A particulate cellulose derivative is obtained in a process of grinding and drying a moist cellulose derivative wherein A) a cellulose derivative having a moisture content of from 60 to 95 percent, based on the total weight of the moist cellulose derivative, is provided, B) the moist cellulose derivative is dried and partially ground in a gas-swept impact mill; and C) the ground and partially dried cellulose derivative is contacted with an additional amount of a drying gas outside the gas-swept impact mill. The obtained particulate cellulose derivative has a high untapped bulk density and a good flowability.

Abstract: The invention relates to the devices for dry and wet fine and ultrafine grinding in a wide range of materials, including organic and cellulose-containing, in a mill and can be used in powder metallurgy, radiochemical, medical, agricultural and other industries. The mill has a body having oppositely charge and discharge pipes. The rotor in form of a disc with grinding elements, mounted on a drive shaft within the body with clearance relative to its lateral surface. The body is freely oriented in the diametric plane of the axis of rotation of the rotor with the possibility of its fixing in the shifted position. The rotor from the side of discharge pipe has blades that perform the functions of the classifier. The charge pipe is equipped with a device to control a supply of air or water to the central part of the rotor.

Abstract: A pick holder for a roll sizer, the roll sizer including at least one roll drum defining a drum axis, the roll drum rotating about the drum axis. The pick holder includes a base and a shoulder. The base includes at least one hole for receiving a fastener for removably coupling the pick holder to the roll drum. The shoulder is coupled to the base.

Abstract: The mill includes a milling chamber (1) containing a rotor (2) provided with hammers (4), and at least one impact screen mounted pivotably with the aid of an adjusting jack in order to move the bottom end of the screen toward or away from the rotor so as to define, between the bottom end of the screen and the free end of the hammers, a spacing which determines a given particle size. The mill includes a device for positioning the rotor that includes indexing elements for positioning the end of one of the hammers as close as possible to the screen for adjusting the spacing. It includes a geared motor driving a pinion capable of engaging with a toothed wheel fixed in rotation to the rotor so as to rotate it from a rest state until one of the hammers is as close as possible to the screen.

Abstract: Impact shredder hammers having first and second major surfaces on opposing sides, and a circumferential edge. A mounting portion includes a mounting hole that extends from the first major surface to the second major surface, and is configured to receive a hammer mounting pin for mounting in a reducing system. A distal portion includes a primary impact face to initially impact materials to be reduced and a wear edge to subsequently compress, crumble, and/or shear the material against a wall of the equipment. The hammer is provided with a plurality of alternating protrusions and recesses in the distal portion.

Abstract: A bale shredder apparatus may comprise a frame and a bale hopper mounted on the frame and defining an interior bale chamber for receiving a bale to be shredded with a bale feed opening. A bale shredding assembly may be in communication with the bale chamber through the opening to shred a bale in the bale chamber. A side wall of the hopper may be movable away from the primary side wall to permit removal of a bale from the bale chamber. A primary bale movement assembly may move a bale in a lateral direction toward the opening and a secondary bale movement assembly may move the bale in a direction substantially transverse to the lateral direction. A shredding rotor of the shredding assembly may include at least one brace including at least one leg extending outwardly from the outer surface of the rotor.

Abstract: A crushing device includes a horizontal shaft impact crusher having an impeller rotating around a horizontal shaft and at least one curtain against which material may be crushed. The crushing device further includes a first feeding device for feeding a first type of material to be crushed to a crushing chamber of the horizontal shaft impact crusher. A second feeding device feeds a second type of material, having a smaller average particle size than the first type of material, to the crushing chamber simultaneously with the first feeding device feeding the first type of material to the crushing chamber. A mixing arrangement for at least partially mixes the first and the second types of materials with each other before bringing them into contact with the impeller.

Abstract: The present disclosure relates to a material reducing machine convertible between a grinding configuration and a chipping configuration. The material reducing machine includes a rotary component that is rotatable about an axis of rotation, the rotary component defining a grinding configuration boundary that extends at least partially around the axis of rotation. The material reducing machine also includes a plurality of hammers secured to the rotary component, the hammers including end portions that project outwardly beyond the grinding configuration boundary of the rotary component. Furthermore, the material reducing machine includes a boundary enlarging structure that mounts over the rotary component, the boundary enlarging structure defining a chipping configuration boundary that extends at least partially around the axis of rotation when the boundary enlarging structure is mounted over the rotary component, the chipping configuration boundary being positioned outside the grinding configuration boundary.

Abstract: A horizontal shaft impact crusher comprises a crusher housing having an inlet for material to be crushed, an outlet for material that has been crushed, an impeller being mounted on a horizontal shaft in the crusher housing and being operative for rotating around a horizontal axis, a curtain against which material accelerated by the impeller may be crushed, and an adjustment bar for adjusting the position of said curtain relative to the impeller. The crusher is further provided with a cross beam to which said adjustment bar is connected, said crossbeam being adjustable relative to the impeller, and a curtain position indicator device indicating the position of the cross beam relative to the impeller, thereby indicating the position of the curtain relative to the impeller.

Abstract: An apparatus for fracturing in which: a fracturing tooth is formed so as to have a larger base part than a top end; a fixing cover is formed along a longitudinal direction of rolls and is provided with fixing holes for fracturing teeth arranged along the longitudinal direction, expanded parts which are formed by expanding both sides of the fixing holes, and an indented part which is formed by narrowing a part between the fixing holes with respect to the expanded parts; the base part of the fracturing tooth is held between the roll and the fixing cover fixed on the roll and the indented part and the expanded part of the adjacent fixing cover are engaged with each other in fracturing teeth unit, so that the fracturing teeth are arranged in a staggered manner.

Abstract: An apparatus for fracturing in which: a fracturing tooth is formed so that a base-end portion has a larger diameter than that of a top-end portion, and a tapered part is formed at the base-end portion so as to expand from the top toward the base; a fixing cover is formed along a longitudinal direction of rolls; in the fixing cover, fixing holes for fracturing teeth are formed along the longitudinal direction so that the fracturing tooth is inserted therein; each of the fixing holes has a slope in which the tapered part is in contact at a surface; a fracturing teeth unit is fixed to the roll in a state in which the top-end portion of the fracturing tooth is protruded from the fixing hole radially-outwardly of the roll and the tapered part is wedged between the slope of the fixing hole and the roll.

Abstract: A scissor type hammer mill, mainly includes an inlet (1), hammers (2), a rotor (3), a screen (9) and a screen carriage (13) thereof, an outlet (7), a hammermill body (8), and a motor (6), and further includes a stationary hammer frame (4) and stationary hammer blades (5) provided on the stationary hammer frame (4). The stationary hammer frame is fixed on the hammermill body, and the stationary hammer blades are fixed on the stationary hammer frame, the stationary hammer blades are mounted in parallel to a rotation plane of the hammers with a distance therebetween. When the material enters into the cavity of the hammer mill, the material form a rotating material ring after being hit by the hammers, and the material is milled once again after the material ring hits the stationary hammer blade.

Abstract: A crusher device includes a frame, a rotating mechanism positioned in the frame, and a plurality of curtains connected to the frame. The curtains are spaced from the rotating mechanism to define a passageway along which material moves while being crushed. A first curtain is connected to the frame via at least one first cylinder. The first curtain is connected to a second curtain via at least one pivotal connection and at least one second cylinder. The at least one second cylinder is retracted automatically when the at least one first cylinder is forcibly retracted to adjust spacing between the first curtain and the rotating mechanism due to an uncrushable. The automatic retraction of the at least one second cylinder rotates the second curtain away from the rotating mechanism. Such movement widens the spacing between the rotating mechanism and the curtains minimizing damage from tramp or uncrushables.

Abstract: A feed material processing apparatus including a chamber; at least one inlet in flow communication to an upper region of the chamber; a rotor located within the chamber that is rotatable about a substantially vertical axis by a rotation drive, wherein the rotor promotes a circulatory flow of feed material and/or gas within the chamber; at least one outlet in flow communication from a lower region of the chamber. Preferably the apparatus comprises at least one feature located laterally on the rotor to promote the circulatory flow.

Abstract: A motor driven crusher for agitating and crushing material is provided. The crusher includes a frame removably coupled to a mechanical bucket and a plurality of shafts rotatably coupled within the frame and operationally coupled to the motor. The crusher further includes a plurality of crushing agitators coupled to each shaft of the plurality of shafts; and a plurality of screening spaces each having a predetermined spacing, wherein material placed on a top side of the crusher is agitated and crushed by the plurality of crushing agitators while the plurality of shafts rotate, screening small material through the plurality of screening spaces while crushing the larger material on the top side of the crusher to fit within the plurality of screening spaces.

Abstract: A tooth construction for a mineral breaker, the tooth construction including a tooth shaped support body covered by a shell on which is mounted a breaking tip formation to define the outer shape of the tooth construction; the support body having a front face, an opposed rear face, and a pair of opposed side faces extending therebetween; the shell being composed of a cover formation defining a front wall, opposed side walls, and a top wall overlying and seated in face to face contact with respective front, side and top faces of the support body; the breaking tip formation comprising a pick formation presenting a rear surface in face to face contact with and secured upon the front wall of the cover so as to project forwardly therefrom and a top formation extending rearwardly of the pick formation and presenting a lower surface in face to face contact with and secured upon the top wall of the cover.

Abstract: A bushing and spacer system for use with hammer mills is configured to be mounted on a hammer mill rod to receive and support a plurality of hammers such that the surface of the rod is shielded from contact with the hammers, and such that the hammers are positioned in spaced relationship one with another. The bushing and spacer system includes at least a first bushing and a second bushing mounted on the hammer rod. The second bushing includes a spacer portion and a neck portion, the spacer portion presenting a larger cross section than the neck portion. The second bushing is mounted on the rod such that the neck portion of the second bushing is adjacent the first bushing. A hammer is rotatably mounted on the neck portion of the second bushing.

Abstract: The various embodiments disclosed and pictured illustrate a multi-connector hammer for comminuting various materials and a protective arm. The illustrative embodiments pictured and described herein are primarily for use with a rotatable hammermill assembly. The multi-connector hammer includes a connection portion having a rod hole therein, a contact portion for delivery of energy to the material to be comminuted, and a multi-connector neck portion affixing the connection portion to the contact portion. In other embodiments, a shoulder is positioned around the periphery of the rod hole for added strength. In still other embodiments, a neck reinforcement is positioned along a portion of the neck for increased strength. A weld or plurality of welds may be affixed to various surfaces of the contact portion to aide in comminuting and/or longevity of the multi-connector hammer.

Abstract: A method and system for preparing a granulated product, whereby one or more ingredients are first ground in a centrifugal grinding unit, and then granulated in a centrifugal granulating unit before being fed to a centrifugal mixing and flavoring unit; each of the centrifugal units having a tubular outer shell having an axis and defining a processing chamber; and a powered shaft housed in the shell, coaxially with the axis, and fitted with a row of appendixes projecting radially from, and connected integrally and interchangeably to, the shaft.

Abstract: A grinder/dryer having a plurality of beater blades carried on a rotating shaft in a cylindrical housing, including one or a plurality of grinding members on the cylindrical side wall. The grinding members are adjustably positioned at different locations within the cylinder. The grinding members may be provided in a variety of different combination of elevated ridges and/or valleys used to dry and classify materials.

Abstract: A horizontal shaft impact crusher, including a crusher housing having an inlet for material to be crushed and an outlet for material that has been crushed. An impeller is mounted on a horizontal shaft in the crusher housing and is operative for rotating around a horizontal axis. Material to be crushed is accelerated by the impeller against a curtain. An adjustment device is provided for adjusting the position of the curtain relative to the impeller. The crusher housing includes at least two guide rails to which the adjustment device is slidably connected. A retaining device is arranged to hold, with a predetermined holding force, the adjustment device in a crusher operation position relative to the guide rails. The adjustment device is movable along the guide rails from the crusher operation position and away from the impeller in response to an excessive force being transferred from the curtain to the adjustment device and exceeding the predetermined holding force.

Abstract: A tub grinder has a rotor with hammers that pass between adjacent slug bars. The slug bars have a riser bar portion disposed on the top of the slug bars, the riser bar portions extending vertically higher on one end of each respective slug bar than on the other end of each respective slug bar so that the hammers extend farther beyond the top of the riser bar and slug bar when they pass by first end than when they pass by the second end of the riser bar.

Abstract: A hammer mill has a lockable milling chamber and a rotor disposed in the milling chamber. The rotor has a shaft supporting plural rotor discs and plural hammer pins for receiving hammers or hammer assemblies. The hammer pins do not extend over all the segments defined by the discs.

Abstract: The mill includes a milling chamber (1) containing a rotor (2) provided with hammers (4), and at least one impact screen mounted pivotably with the aid of an adjusting jack in order to move the bottom end of the screen toward or away from the rotor so as to define, between the bottom end of the screen and the free end of the hammers, a spacing which determines a given particle size. The mill includes a device for positioning the rotor that includes indexing elements for positioning the end of one of the hammers as close as possible to the screen for adjusting the spacing. It includes a geared motor driving a pinion capable of engaging with a toothed wheel fixed in rotation to the rotor so as to rotate it from a rest state until one of the hammers is as close as possible to the screen.

Abstract: Shredder hammers having first and second major surfaces on opposing sides, and a circumferential edge. The hammer includes a mounting portion and a working portion. The mounting portion defines a mounting aperture that extends from the first major surface to the second major surface, and is configured to receive a hammer mounting pin. The working portion includes at least one recess in at least one of the first and second major surfaces with opposed walls that extend away from a distal portion of the circumferential edge. The hammers are used in shredding systems for shredding material.

Abstract: An apparatus for fracturing polycrystalline silicon having: a pair of rolls which are rotated in a counter direction each other around parallel axes; a plurality of fracturing teeth which are provided on and protruded radially-outwardly from outer peripheral surfaces of the rolls, and are made from cemented carbide or silicon material; and resin covers being wound around the roll in a state in which the fracturing teeth penetrate thereof so as to cover the outer peripheral surfaces of the rolls, and fractures fragments of polycrystalline silicon between the rolls.

Abstract: An apparatus for fracturing polycrystalline silicon having a pair of rolls which are rotated in a counter direction each other around parallel axes; and a plurality of fracturing teeth which are provided on outer peripheral surfaces of the rolls and are protruded radially-outwardly, in which top surfaces thereof are formed spherically and side surfaces thereof are formed conically or cylindrically, and fracturing fragments of polycrystalline silicon between the rolls.

Abstract: An apparatus for fracturing polycrystalline silicon having a pair of rolls which are rotated in a counter direction each other around parallel axes, the rolls is provided with: a plurality of disks layered along the axes of the rolls; and a plurality of fracturing teeth protruding radially-outwardly from the disks with a certain intervals along a peripheral direction of the disks, wherein the disks are rotated at different rotation speed from an adjacent disks, and the apparatus fracturing fragments of polycrystalline silicon between the rolls.

Abstract: A horizontal shaft impact crusher includes a crusher housing having an inlet for material to be crushed and an outlet for material that has been crushed. An impeller is mounted in the crusher housing for rotation about a horizontal axis. A curtain disposed in the crusher housing is arranged so material accelerated by the impeller is crushed thereagainst. An adjustment device, which adjusts the position of the curtain relative to the impeller, is slidable connected to guide rods. The adjustment device includes a locking device positionable selectively in either a holding state in which the locking device is de-energized and arranged to apply a holding force for holding the adjustment device in a crusher operation position relative to the guide rods, or an adjustment state in which the locking device is energized and arranged to release the holding force, thereby enabling displacement of the adjustment device relative to the guide rods.

Abstract: An apparatus for fracturing polycrystalline silicon has: a pair of rolls which are rotated in a counter direction each other around parallel axes; and a plurality of fracturing teeth protruding outward radially from outer peripheral surfaces of the rolls and having variant heights. In the apparatus for fracturing, the fracturing teeth are arranged so that higher teeth among the fracturing teeth and lower teeth among the fracturing teeth are alternately rowed at least along a circumferential direction or a width direction of the rolls; and the fracturing teeth are arranged so that a tip of the higher tooth of the one roll and a tip of the lower tooth of the other roll are opposed to each other at a position in which the fracturing teeth of each rolls are closest to each other, so that the apparatus fractures fragments of polycrystalline silicon between the rolls.

Abstract: An apparatus for fracturing polycrystalline silicon having: a pair of rolls rotated in a counter direction each other around parallel axes; and a plurality of fracturing teeth units provided on outer peripheral surfaces of the rolls, arranged along a circumferential direction of the rolls, and have a plurality of fracturing teeth and fixing covers fixing the fracturing teeth on the outer peripheral surfaces of the rolls, in which: the fracturing teeth has flanges; and the fixing covers are formed as strips along a longitudinal direction of the rolls, and in which the fixing covers are fixed on the rolls in a state in which top ends of the fracturing teeth are protruded outward radially of the rolls from the fixing hole outward so as to hold the flanges between the fixing covers and the rolls.