Abstract: The present invention provides a pressure roller for use in semi-autogenous comminution of maters. The roller has an outer face (11) accommodating a set of wear resistance inserts (13) in a spaced array over the outer face. The inserts are embedded in the surface of the roller and extend into an outer section of the roller. Each insert is spaced inwardly from or is flush with the outer face of the roller.

Abstract: A cutting mill for crushing broken polycrystalline needle-shaped silicon material, which contains particles that have an aspect ratio of AI with 5<AI ?30, and/or broken Si wafer consisting of laminar particles, wherein the cutting mill has an interior space that is lined with silicon and/or plastic, wherein the cutting mill has a rotational body configured as a multi-sided column, wherein said rotational body, in the regions facing the interior space of the cutting mill, is lined with silicon or features silicon, and wherein blades which run parallel with the longitudinal edges of the rotational body and are disposed in the rotational area of the rotational body, are arranged in the interior space of the cutting mill, and are adjustable with respect to the rotational body.

Abstract: A cushioning element suitable for use in a liner assembly for a grinding mill, the liner assembly including a mounting element having a recess therein, the cushioning element being located within the recess, and a wear element operatively connected to the cushioning element, the cushioning element including a cushion body of elastomeric material including a side section and opposed end sections, a plurality of cavities within the cushion body and extending from at least one of the end sections towards the other end section.

Abstract: A solid-state imaging apparatus including: a pixel section with a plurality of pixels arranged into two dimensions, each having a photoelectric conversion section for effecting photoelectric conversion, an accumulation section for temporarily storing a signal generated at the photoelectric conversion section, a transfer means for transferring the signal of the photoelectric conversion section to the accumulation section, a reset means for resetting the accumulation section, an amplification means for amplifying and outputting an electric potential of the accumulation section, and a select means for selecting the amplification means; and a noise suppressing circuit for suppressing a variance of a signal at the time of reset of each pixel, having a switch section for switching a polarity of a difference between a first signal and a second signal that are different in a characteristic due to pixel.

Abstract: A replaceable distributor plate is adapted for protecting a lower horizontal disc of a rotor of a vertical shaft impact crusher. The replaceable distributor plate includes at least two separate pieces. The separate pieces are separated from each other along separating lines, as seen from above, each of which separating lines extend substantially from the center of the distributor plate to the periphery thereof.

Abstract: The replaceable insert for a hammermill hammer enables the insert to be removed and replaced by the removal and installation of a single bolt in the leading face or edge of the hammer, rather than requiring partial disassembly of the hammermill for the removal of a damaged hammer and hammer shank from its retaining rod. The insert is formed of hard and tough metal, e.g., tool steel, carbide alloy, etc., as a longitudinally and laterally symmetrical rectangular parallelepiped, the hammer shank having a cooperating relief formed therein. The symmetrical configuration allows the insert to be reversed through 180° in its installation, thereby exposing a fresh insert face after the first face has been worn or damaged. A pair of indexing pins extends from the insert, the pins fitting closely within cooperating receptacles in the hammer shank relief to secure the insert precisely within the relief.

Abstract: A cushioning element suitable for use in a liner assembly for a grinding mill, the liner assembly including a mounting element having a recess therein, the cushioning element being located within the recess, and a wear element operatively connected to the cushioning element, the cushioning element including a cushion body of elastomeric material including a side section and opposed end sections, a plurality of cavities within the cushion body and extending from at least one of the end sections towards the other end section.

Abstract: A wear part for protecting a vertical rotor wall of a rotor of a VSI-crusher includes a wear body having a wear surface adapted for contacting abrasive particles. The wear surface is provided with at least one ridge extending over at least a portion of the wear surface. At least a portion of the length of the ridge is, when the wear part has been mounted to the vertical rotor wall, inclined in relation to a horizontal plane.

Abstract: A crusher and a method for controlling a crusher having a first crushing member and a second crushing member defining a crusher setting of a crushing cavity into which material to be crushed is being fed. The method having the steps of: measuring continuously instantaneous load on the crusher; recording instantaneous load peaks exceeding a predetermined target level for the load peaks; keeping track of the number of the load peaks exceeding the predetermined target level during a predetermined period of time; and controlling loading of the crusher on the basis of the number of the load peaks experienced by the crusher during the predetermined period of time.

Abstract: A mill liner element is structured with an elongated elastomer member having a non-elastomeric backing plate and a plurality of non-elastomeric inserts formed into the elastomer member to provide a liner element that provides a lifter bar element and a wear element that is less prone to cracking compared to conventional all-metal mill lining elements, and which provides ease of handling and replacement when worn. A multiplicity of mill liner elements are positionable in a grinding mill shell, and are suitable for use in a variety of types of grinding mill structures, including ball mills and AG and SAG mills.

Abstract: A wear component for use in an impact crusher having a forward depression on the face of the wear component which is exposed to aggregate wear. Wear resistant inserts, for example cemented tungsten carbide inserts, are bonded within the forward depression to prevent rapid abrasion of the wear component. Joints are formed between wear resistant inserts and joints are also formed between wear resistant inserts and the wear component. Bonding material fills the joints to further secure the wear resistant inserts and to prevent crack propagation.

Abstract: A comminution device including at least one comminution cylinder supported rotating in a machine frame with at least one comminution tool arranged on it, and at least one counter cutter interacting with the comminution tool, and at least one sieve device for the comminuted material the housing of which encircles the comminution cylinder at least partly, the sieve device and the counter cutter forming a common structural component. The counter cutter is designed like a plate and has recesses designed corresponding to the shape of the comminution tools of the comminution device.

Abstract: A wear liner for use with a brush cutter, the cutter having a cylindrical, rotatable, cutting drum carrying cutting teeth and a cover at least partially covering the drum to limit dispersal of cut material. The liner comprises a sheet of material which can be shaped to fit against the inner surface of the cover. The liner has holes on its sides for use in detachably connecting the liner with fastening means to the cover against the cover's inner surface. The liner has protective means mounted on its inner surface adjacent each hole to protect part of the fastening means located adjacent the inner surface of the liner, when the liner is mounted to the cover and the fastening means extend through the opening, from wear by material thrown by the cutter during its operation. The invention is also directed toward a brush cutter incorporating the liner.

Abstract: In one aspect of the invention, a rotary shaft impactor has a rotor assembly connected to a rotary driving mechanism. The rotor assembly has a plurality of autogenous bed pockets, the pockets having a wall intermediate a distal and a proximal end. A least one of the pockets comprises a plurality of inserts arranged adjacent one another in a row and attached to at least the proximal or distal end wherein a first end of at least one insert is complementary to a second end of an adjacent insert.

Abstract: A tube mill is provided with liners fastened to a shell. The tube mill is provided with an adaptor plate. The adaptor plate is provided with a first pattern of drilling holes in a DIN pattern and a second pattern of drilling holes in a non-DIN pattern. The adaptor plate is fastened to the shell via one or more holes of the second pattern and a number of liners is fastened to the adaptor plate via one or more holes of the first pattern.

Abstract: The invention provides a particulate size reduction system including a grinding chamber, a center shaft defining an axis of rotation and configured for rotational motion within the grinding chamber, a wheel assembly mounted on the center shaft and at least one swing hammer mounted on the wheel assembly. The at least one swing hammer preferably includes a base portion having a first end having a mounting portion for attachment to a wheel assembly of a material treatment system, a second end, an inboard portion proximate the mounting and an outboard portion proximate the second end. The swing hammer also preferably includes a wear pad disposed on the base portion that preferably includes an interrupted surface to improve wear resistance of the swing hammer.

Abstract: An annular casing for the press rollers of roller presses for the pressure comminution of particulate material, the outer surface of which casing always has a high degree of hardness and consequently a high wear-resisting capability, but the radially inner region of which casing has a lower degree of hardness to avoid casing ruptures, it is proposed according to the invention that the material of the casing consists of nodular cast iron with at least the alloying elements Ni and Mo and with a bainitic structure with residual austenite, and in that, to achieve a self-hardening surface, the boundary layer of the annular casing—contains martensite, which is constantly renewed by external pressure loading of the casing surface when the press roller is in operation.

Abstract: An apparatus includes a mill drum for pulverizing and classifying material. The mill drum includes a cylindrical drum housing and one or more beater plates mounted for rotation within the housing. Each beater plate includes a plurality of beaters mounted on the peripheral edges thereof. A drum liner assembly includes a plurality of drum liner segments secured to the drum housing. Each drum liner segment includes a backing plate and one or more drum liners mounted thereon. The drum liners are made of a carbide material to provide superior wear characteristics.

Abstract: A rotary shaft impactor, has a rotor assembly connected to a rotary driving mechanism. The rotor assembly has an axis of rotation, an inlet, and an outlet, and is disposed within a chamber with an inner wall. A wear path has a portion of the inner wall and a channel connecting the inlet and the outlet. At least a portion of the wear path has a diamond surface.

Abstract: A reliable, inexpensive option for the plates that function as wear parts and are mounted on an inner face of a casting wall of a stator. To achieve this the plates are designed as cast parts and are fixed to the inner face of the casting wall from an exterior of the stator. The plates are fixed by fixing bolts, which are screwed into the plates through the casting wall from the exterior. The plates have transverse threaded bores that correspond to the bolts. Respective spacer rings are pushed onto the fixing bolts secured by wedge-shaped cotters in both a positive and non-positive fit, and the wedge-shaped cotter pressing on the spacer rings that lie against the outer face of the casting wall. This invention is extremely economical and improves the operational safety in comparison to known options.

Abstract: An improved vertical shaft impactor rock crusher is provided. The improvement comprises an anvil having a front impact surface, a planar rear surface and a side surface extending between the front and rear surfaces. A shaft extends from the rear surface and can have a polygonal shaped cam lobe at the end of the shaft. When seated in the slot of a hanger bracket, the cam lobe keeps the anvil secured to the bracket while a side of the cam lobe rests on a seating block attached to the bracket to hold the anvil in an indexed position. When the impact surface becomes worn from use in the rock crusher, the anvil can be rotated within the bracket so that the cam lobe rests on an adjacent side thereby presenting an unworn surface to fracture feed rock in the rock crusher.

Abstract: In one aspect of the invention, a cone crusher has at least one crushing surface disposed on either a cone and/or an inverted bowl of the crusher. The crushing surface has at least one insert having an impact head with a stem protruding from a base end of the head. The stem has a smaller cross sectional thickness than the head.

Abstract: In one aspect of the invention, a rotary impact mill has a milling chamber defined by a housing with an inlet, an outlet, and at least one wall. A plurality of impact hammers located within the milling chamber are fastened to and longitudinally disposed along a rotor assembly that is connected to a rotary driving mechanism. At least one of the impact hammers has a plurality of inserts arranged adjacent one another in a row and attached to a body of the hammer, wherein a first end of at least one insert is complementary to a second end of an adjacent insert.

Abstract: A jaw assembly for a jaw crusher is disclosed where the assembly comprises a jaw stock (12), a wear plate (16), and a fastening device in the form of a bolt (34) with a square head (42) at one end and a washer (56) and fastening nut (52) positioned at an end opposite to the one end. The bolt (34) extends between the jaw stock (12) and the wear plate (16). The fastening device (34, 42, 56, 52) is operative to adopt a clamped configuration where the device provides a clamping force along a fastening axis to clamp the wear plate (16) at the jaw stock (12), and a released configuration where the fastening device does not prevent the wear plate (16) from being separated from the jaw stock (12). The fastening device (34, 42, 56, 52) is accessible from a direction that is transverse to that fastening axis, to enable the device (34, 42, 56, 52) to be changed from its clamped configuration to its released configuration.

Abstract: A wear part of a vertical shaft impactor consisting of at least two or a plurality of materials, whereby the wear part comprises a base part composed of a polymer material, having wear resistant inserts attached to the base part.

Abstract: A wear tip for a rotor of a centrifugal mineral breaker, comprises a carrier 80 having at least two wear edges 82, 84 each disposed transversely to the path of mineral material being ejected from the rotor. A longitudinally extending groove 122 between the first 82 and second 84 wear edges forms a rock retaining recession. Each wear edge 82, 84 has a wear face 108 with a recess 106 therein. An insert 112 of abrasion resistant material is disposed in each recess 106. Each insert 112 has an outer wear surface and an arcuate inner surface 114 conforming to the profile of the recess 106. The outer wear surface of each insert 112 is generally in planar alignment with the wear face 108 of one of the wear edges 82, 84.

Abstract: A stump grinding disk includes a metallic wheel defining an axis of rotation and including a pair of side surfaces and a circumferential outer edge surface. The outer edge surface includes a plurality of circumferentially spaced recesses. Each recess extends axially completely through the disk. A plurality of side cutting elements are mounted on each side surface. A plurality of outer peripheral cutters are spaced circumferentially apart around the outer edge surface. Wear strips are mounted in respective recesses. Each wear strip includes a metal matrix in which hard particles are disposed. Each wear strip defines a radially inner surface affixed to the wheel, and a radially outer surface arranged substantially flush with adjacent portions of the outer edge surface.

Abstract: A wear plate assembly includes a body portion and an abutment flange extending from a radially outer circumferential edge of the body portion and substantially normal thereto. The abutment flange is cooperatively configured with respect to another abutment flange of a respective adjacent wear plate that interengages with the wear plate such that a convoluted edge of the another abutment flange of the respective adjacent wear plate intermeshes with a respective convoluted edge of the abutment flange of the wear plate. At least one polygonal recess and a corresponding abutment ramp are substantially aligned therewith at a same latitude on the body portion, the recess further includes a through hole extending through the wear plate. A first clip configured is partially received in the polygonal recess, the clip having a plurality of exposed impact surface faces.

Abstract: A wear plate assembly includes a body portion and an abutment flange extending from a radially outer circumferential edge of the body portion and substantially normal thereto. The abutment flange is cooperatively configured with respect to another abutment flange of a respective adjacent wear plate that interengages with the wear plate such that a convoluted edge of the another abutment flange of the respective adjacent wear plate intermeshes with a respective convoluted edge of the abutment flange of the wear plate. At least one polygonal recess and a corresponding abutment ramp are substantially aligned therewith at a same latitude on the body portion, the recess further includes a through hole extending through the wear plate. A first clip configured is partially received in the polygonal recess, the clip having a plurality of exposed impact surface faces.

Abstract: A mulcher apparatus includes a tractor and a mulcher unit provided to the tractor. The mulcher unit includes a tooth assembly with a holder and a cutter element with a cooperating notch portion and cross bar arrangement. The notch portion can be retrofit to existing holder arrangements. The cutter element may include various features, to enhance cutting efficiency. For example, the cutter elements may include a double-ended structure, angle tab portions at each corner portion, carbide coatings, a pair of tip portions at each end with a space therebetween, and/or a generally H-shaped configuration.

Abstract: A pulp lifter for installation in a grinding mill has a leading edge and a trailing edge with respect to rotation of the mill and comprises a first wall bounding an interior space and a second wall dividing the interior space into first and second sections. The first wall includes a leading edge wall formed with an inlet opening providing access to the second section and an inner edge wall formed with an outlet opening for discharge of slurry from the second section. The second wall includes a guide that extends substantially from an outer end of the leading edge wall to a trailing end of the inner edge wall, and the first section of the interior space is open at the trailing edge of the pulp lifter.

Abstract: The invention relates to a ring-slot type magnetic liner comprising guard plates, permanent magnetic bodies, binders and medium protecting layers, wherein, more than one dead slots are equidistantly arranged on the structure of said guard plates along the circumferential direction, a permanent magnetic body installed in each of said dead slots, and along the circumferential direction of the guard plate, one coil is set as N pole and the other coil is set as S pole. Each of the protecting layers is formed on the surface of the guard plate and is of annular shape in the circumferential direction. The invention allows the grinding operation to be carried out in the slots of the ring-slot shaped protecting layer which is formed from cracked grinding balls. The grinding balls contact the materials at an angle of about 120°, and the grinding efficiency is kept constant. Therefore the attritioning efficiency and yield may be increased.

Abstract: The invention provides a particulate size reduction system including a grinding chamber, a center shaft defining an axis of rotation and configured for rotational motion within the grinding chamber, a wheel assembly mounted on the center shaft and at least one swing hammer mounted on the wheel assembly. The at least one swing hammer preferably includes a base portion having a first end having a mounting portion for attachment to a wheel assembly of a material treatment system, a second end, an inboard portion proximate the mounting and an outboard portion proximate the second end. The swing hammer also preferably includes a wear pad disposed on the base portion. The wear pad preferably substantially covers a face of the base portion. The wear pad preferably extends from a point proximate the second end of the base portion toward the first end of the base portion to a location proximate the mount.

Abstract: The invention relates to a grinding roll with a basic roll body as well as a plurality of wear protection elements made from hard metal which form at least a part of the roll surface. The basic roll body has recesses extending in the circumferential direction, a plurality of wear protection elements being disposed one behind the other in the circumferential direction in each recess.

Abstract: A blade for a comminution machine includes a first attack face facing in a first direction to perform comminution when the blade is rotated about an axis of rotation in a first direction. The blade also includes a second attack face facing in a second direction to perform comminution when the blade is rotated about the axis of rotation in a second direction substantially opposite to the first direction. A radial exterior of the first attack face and a radial exterior of the second attack face are connected along an arc subtending at least 30 degrees and less than 110 degrees with respect to the axis of rotation.

Abstract: The aim of the invention is to provide grinding rolls in particular for high-pressure roller mills or rolling presses for pressure grinding a granular material not only with a wear-resistant coating but also with a face armour plating in the area of the roller annular edge, which has a long service life due to the high wear resistance thereof and whose production and repair are, in general, relatively simple and inexpensive. For this purpose, the inventive face armour plating consists of a plurality of prefabricated hard bodies which are circularly arranged side by side in such a way that the circular face edge of the roller is formed, said hard bodies are disposed on said circular shoulder of a roll shell such that said hard bodies are placed axially and radially against said circular shoulder of the roll shell and are movably assembled with the roll shell.

Abstract: An impact hammer mountable to the drum of a rotary crusher employs an attachment bolt having a tapered head which is wedged into a tapered socket in the impact hammer body. A “supernut” is used to secure the bolt to the rotary drum. The supernut is tightened against the rotary shear head until it is snug. Then, threaded locking posts, which pass through the periphery of the supernut, are tightened repeatedly, thereby applying a great deal of tension the bolt shank and effectively stretching it. Any shocks applied to the impact hammer will drive the tapered head of the bolt deeper into the socket of the hammer body block, resulting in the maintenance of a secure hammer-to-drum union. The hammer body also has tungsten carbide chips embedded in a hardfacing material that is applied to the wear surfaces of the hammer.

Abstract: A cutting tool for attachment to the leading area of a base is provided. The cutting tool includes a holder base having two substantially parallel cutting teeth extending from the holder base, the cutting teeth each having a cutting edge and an opening between the teeth. The cutting teeth define first and second cutting paths. The cutting teeth impact and cut asphalt shingles, and funneling surfaces of the teeth funnel the cut shingle material toward and through the opening, and into the path of the rear cutting member which cuts the material a second time. Thus, asphalt shingles are processed more efficiently, thereby creating less frictional heat and avoiding melting of the asphalt shingles.

Abstract: In order to increase the service life of a grinding tool (14, 16, 24a, 24b), it is coated with a wear-resistant material, wherein the coating (30, 301) has a ductile metallic parent material (32) with hard particles (34) embedded therein.

Abstract: In one aspect of the invention, a cone crusher comprises a crushing surface comprising a conical head and a concave bowl. At least one of the head or bowl comprises a segmented wear liner wherein at least one segment of the wear liner is held in place by compression.

Abstract: A wear part for protecting a vertical rotor wall of a rotor of a VSI-crusher includes a wear body having a wear surface adapted for contacting abrasive particles. The wear surface is provided with at least one ridge extending over at least a portion of the wear surface. At least a portion of the length of the ridge is, when the wear part has been mounted to the vertical rotor wall, inclined in relation to a horizontal plane.

Abstract: A wear tip for a rotary mineral breaker comprises a carrier 12 having at least one wear edge 40 having a recess 50. An insert 14 of abrasion resistant material disposed in the recess 50 has an outer wear surface 52 in generally parallel relation with a wear face 48 of the carrier 12 and an inner surface 54 having an arcuate profile for more effective consumption of the insert material.

Abstract: The present invention is particularly, but not exclusively, useful for reducing wear of component parts of impact crushers caused by earth aggregate flows during operation of impact crushers. The present invention includes a stepped central feed cone that allows for cylindrical carbide rods to be press fit therein to reduce wear. The downward steps of the stepped cone urge material fed to the stepped cone outwardly to the table. The top surface of a first rod inserted into a first bore formed in the impeller housing extends a distance beyond the bottom of a second bore on the next step up. The first rod protects the housing material forming the second bore from being washed out by material flow. In one embodiment, the impeller shoes have a geometric shape that reduces excessive normal forces and accompanying high friction of the material against the shoe. The reduction in high friction significantly reduces the wear rate.

Abstract: A percussion tool for comminuting materials, in particular wood waste materials, having a beater head and a shank, wherein a cutting insert with an upper cutting edge extending transversely with respect to the cutting direction is fastened on the beater head. If the cutting insert has at least one first cutting element and at least one second cutting element, and if a free space in the shape of the upper cutting edge is arranged on the beater head in the cutting direction behind the cutting insert, then the cutting elements are thus supported over a greatest possible surface and are connected with the beater head. It is thus possible to transfer greater forces into the beater head without it being broken off.

Abstract: In one aspect of the invention, a rotary impact mill has a milling chamber defined by housing with an inlet, an outlet, and at least one wall. A plurality of impact hammers located within the milling chamber are fastened to and longitudinally disposed along a rotor assembly connected a rotary driving mechanism. At least one of the impact hammers has a body with a first hardness. The impact hammer also has a wear resistant insert bonded to the body, wherein the wear resistant insert comprises a hard surface with a second hardness greater than the first hardness.

Abstract: An improved vertical shaft impactor rock crusher is provided. The improvement comprises an anvil having a front impact surface, a planar rear surface and a side surface extending between the front and rear surfaces. A shaft extends from the rear surface and can have a polygonal shaped cam lobe at the end of the shaft. When seated in the slot of a hanger bracket, the cam lobe keeps the anvil secured to the bracket while a side of the cam lobe rests on a seating block attached to the bracket to hold the anvil in an indexed position. When the impact surface becomes worn from use in the rock crusher, the anvil can be rotated within the bracket so that the cam lobe rests on an adjacent side thereby presenting an unworn surface to fracture feed rock in the rock crusher.

Abstract: The present invention provides for a method and apparatus for breaking mineral particles comprising suspending the particles in a liquid flowing in a column, the liquid comprising a dielectric constant higher than the particles and wherein an electric voltage pulse is sent to electrodes to pass an electric field in the mineral particles with sufficient stress to fracture the mineral particles.

Abstract: A tooth construction for a mineral bear, the tooth construction including a tooth shaped support body covered by a shell which defines the outer shape of the tooth construction, the shell being composed of a plurality of covers which are fixedly secured to one another and/or to the support body by welding to define a unitary tooth construction the support body having a front face and an opposed rear face and the plurality of covers including at least a front cover which is weldingly secured to and seated in face to face contact with the front face of the support body and a separate rear cover which is weldingly secured to and seated in face to face contact with the rear face of the support body.

Abstract: Slag crusher having a shaft extending through a pressure housing which shaft is provided with inlet baffle plates in a funnel-shaped arrangement, stationary cutting knives and cutting knives rotating on the shaft. The shaft is offset with respect to the vertical center line of the pressure housing, so that the crushing area is concentrated in the middle of the slag crusher. The rotating cutting knives are angularly offset on the periphery of the shaft, so that only one rotating knife and two stationary knives are in engagement at a time.

Abstract: The present invention is directed to, among other things, a grinding and impeller clip for attaching to a wheel assembly mounted for rotational motion within a grinding chamber of a coal pulverizer, wherein the clip has an arcuate cross sectional profile and a protective layer on its upper surface.