Abstract: A grinding apparatus may include a frame and a pair of rolls each having a circumferential surface and being rotatably mounted on the frame, and a plurality of teeth located on the circumferential surface. In embodiments, at least one roll comprises a roll body structure rotatably mounted on the frame and a roll cover structure forming the circumferential surface, and the roll cover structure may be at least partially removable from the roll body structure to permit replacement of at least a portion of the circumferential surface without requiring removal of the roll body structure from the frame. In embodiments, the teeth on one roll may include an upper cap portion formed of a relatively harder material and a lower base portion formed of a relatively softer material. In embodiments, the teeth on one roll have a coating of a relatively harder material than a relatively softer base material forming the tooth.

Abstract: A grinding system for grinding raw material to obtain ground material comprises a housing, a grinding assembly, and a first cap. The housing defines a grinding chamber, and the grinding assembly comprising a plurality of burrs. The grinding assembly is supported relative to the housing such that each of the plurality of burrs is arranged within the grinding chamber. The first cap is detachably attachable to the grinding assembly such that, with the first cap attached to the grinding assembly, rotation of the first cap relative to the housing causes rotation of at least one of the plurality of burrs relative to at least one other of the plurality of burrs and, with the first cap detached from the grinding assembly, the raw material may be arranged within the grinding chamber.

Abstract: A roll for a roller press suitable for comminution of granular material by interparticle crushing. The roll comprising a cylindrical body having an outer cylindrical pressing surface for use with an opposing roll in an interparticle crushing pressing nip and a plurality of outwardly extending wear-resistant surface studs positioned on the pressing surface. A strip element is provided on the outer cylindrical pressing surface of the cylindrical body.

Abstract: Apparatus for drying Spent Ion-Exchange Resins (SIER), which can intensify the SIER drying process, reduce power consumption, and accelerate discharge of SIER when the drying process is completed. The apparatus comprises a sealed cylindrical body, and a blow-down choke installed in an upper part of the sealed cylindrical body and a nozzle to feed the spent ion-exchange resins is installed inside the body, and a nozzle to retrieve dried ion-exchange resins is installed in its bottom part and equipped with a locking device. An external heater is provided for the body, and a drive shaft that is installed in alignment inside the body, capable of rotation, and equipped with a stirrer. A lower part of the drive shaft with lower screw winding is installed in alignment inside the nozzle to retrieve dried ion-exchange resins. The nozzle to retrieve dried ion-exchange resins is equipped with a water draining device.

Abstract: Container compressing arrangement, mountable in a reverse vending machine, for compacting empty containers, in particular beverage bottles or cans which are preferably made of plastic or metallic material, such as PET or tinned metal, the container compressing arrangement including: a first and a second rotatable roller, each of the rollers having a working surface arranged between two oppositely arranged ends, wherein the rollers are arranged adjacent to each other to rotate in opposite directions around a respective rotation axis in a common geometrical xz-plane; and wherein the working surface includes a plurality of ridges extending across the working surface, in an axial direction of the roller, and distributed in the circumferential direction of the working surface, each ridge having a longitudinal extension in the axial direction.

Abstract: A grinding apparatus may include a frame and a pair of rolls each having a circumferential surface and being rotatably mounted on the frame, and a plurality of teeth located on the circumferential surface. In embodiments, at least one roll comprises a roll body structure rotatably mounted on the frame and a roll cover structure forming the circumferential surface, and the roll cover structure may be at least partially removable from the roll body structure to permit replacement of at least a portion of the circumferential surface without requiring removal of the roll body structure from the frame. In embodiments, the teeth on one roll may include an upper cap portion formed of a relatively harder material and a lower base portion formed of a relatively softer material. In embodiments, the teeth on one roll have a coating of a relatively harder material than a relatively softer base material forming the tooth.

Abstract: Systems and methods for decreasing a size of debris entering an electrical submersible pump assembly in a subterranean well with a debris handling assembly include a handler housing with an inner bore and a housing cutting profile located on an inner surface of the inner bore. A cutting blade is secured to a rotating shaft within the inner bore of the handler housing, the cutting blade being aligned with a first portion of the housing cutting profile. A mill is secured to the rotating shaft, the mill aligned with a second portion of the housing cutting profile. An annular mill space is defined by an outer surface of the mill and the inner surface of the inner bore, the annular mill space decreasing in a radial dimension in a downstream direction.

Abstract: A roll for use in a machine for producing and/or further processing a fibrous web, such as a paper, paperboard, or tissue web, includes a roll cover having at least some sections or regions formed of a metal material and a coating formed on the roll cover. The coating is formed of a metal, ceramic and/or cermet material, or at least some sections or regions of the coating include one of those materials. An alloy region is situated between the roll cover and the coating.

Abstract: Described is a wear-resistant roller component for handling abrasive materials where the component comprises a metal body with at least one surface. It is characterized in that a metal template having a pattern of through-going holes is arranged on the at least one surface of the metal body and in that a cover arranged to cover at least a part of the metal template is located at a distance from the metal template to form a gap between the cover and the metal template and in that a powder material suitable for sintering is introduced into the through-going holes in the metal template through the gap and in that the metal body, the metal template, the cover and the material powder are bonded together by means of a sintering process.

Abstract: A semiconductor device comprises a substrate, a semiconductor multilayer structure supported by the substrate, and a first nitride transistor provided in a first area of the semiconductor multilayer structure. The semiconductor multilayer structure comprises first to fourth nitride semiconductor layers. The first nitride transistor comprises part of the first nitride semiconductor layer, part of the second nitride semiconductor layer, part of the third nitride semiconductor layer, part of the fourth nitride semiconductor layer, a first gate electrode electrically connected to the part of the first nitride semiconductor layer, a first source electrode electrically connected to one of two portions in the third nitride semiconductor layer, a first drain electrode electrically connected to the other one of the two portions, and a first substrate electrode electrically connected to the part of the fourth nitride semiconductor layer.

Abstract: In grinding of a raw material by a vertical roller mill, highly-efficient grinding is performed irrespective of the type of the raw material, and the life of the mill roller is extended. In order to achieve these, in a grinding roller used in a vertical roller mill, an outer circumferential surface of the roller as a grinding surface is divided into a main grinding surface that mainly performs pulverizing and a grinding surface other than the main grinding surface. The main grinding surface is made smooth, and the grinding surface other than the main grinding surface is a raw material transfer surface in which slit grooves inclined at 90 degrees or an angle exceeding 45 degrees relative to a roller circumferential direction or screw grooves inclined at 45 degrees or smaller relative to the roller circumferential direction are formed.

Abstract: A profiled binding for use in a roller press. An alloy containing a high degree of chromium is used. A high wear-resistance of the binding is thereby achieved, said binding not being sensitive with respect to build-up weldings in order to reconstruct the profile after wear.

Abstract: A gyratory crusher crushing head, removably mounted a crushing shell, includes a circumferential groove is formed in an outer facing surface of the crushing head. The groove is positioned towards a second lower end at the outward facing surface relative to an axial length of the crushing head. The groove and its relative axial positioning minimizes the stress concentrations at the crushing head resulting from forces tangential to the outward facing surface.

Abstract: A process and apparatus for shredding tobacco sheets, especially tobacco sheets formed of reconstituted tobacco particles with guar and sugar comprises rotating opposing sets of cutter discs in a partially overlapping relation so as to establish a nip. The cutter discs have notches at spaced locations along a peripheral portion of the cutter discs. Adjacent pairs of cutter discs are spaced apart by a spacer disc with a stripper plate interposed between adjacent pairs of spaced apart cutter discs. A tobacco sheet which is fed into the nip of the sets of cutter discs is shredded by the discs.

Abstract: A tool unit for a comminution device with a rotor-stator system is provided, in which comminution tools are detachably fastened to tool holders on a rotor circumference and work together with comminution tools located on the stator. In order to shorten the tool replacement downtimes of a device equipped with such a tool unit and to increase its profitability, the tool holder includes a first carrier section and a second carrier section, the rear sides of which sections detachably contact one another in a common contact plane, and on each of the mutually averted front sides of which is located at least one bearing surface for accommodating a tool.

Abstract: Embodiments of the invention are directed to roll assemblies configured to exhibit improved wear resistance of stud elements. Accordingly, the roll assemblies of may improve and/or increase the useful life of high pressure grinding roll apparatuses. In an embodiment, one or more stud elements may include superhard material, which may provide superior wear resistance characteristics and may increase the useful life of the rolls assemblies and high pressure grinding roll apparatuses.

Abstract: A grinding assembly for the comminution of material that enhances the durability of the side edges of both a grinding roll and a flange roll. Both the grinding roll and the flange roll include a wear ring that is received within a side groove formed at each end of a cylindrical roll body. The wear ring includes a series of spaced receiving cavities that each receive a wear member. Each wear member includes a radially outer surface and an axial end face to enhance the durability of the edge of the roll body. The edge ring is retained on the roll body by a series of connectors that pass through the edge ring. In the flange roll design, a flange ring is attached to the roll body by a series of connectors that also secure the edge ring to the roll body.

Abstract: A blender comprises a jug and a cutting assembly having an upwardly inclined main blade portion. The jug has an interior portion, and the lower portion has a profile that includes an upwardly reaching portion conforms to the blade shape of the cutting assembly to reduce food accumulation below the main blades.

Abstract: The invention relates to a roller for a roller grinder, said roller comprising a shaft and a grinding shell in the form of a generally tubular sleeve and having an inner face to be retained around the shaft. The roller grinder is characterized in that the shaft comprises two shaft parts, each shaft part having a respective inner end portion, wherein said inner end portions are arranged to be positioned facing each other and comprise coupling portions (40) arranged to couple the inner end portions of the respective shaft parts to each other, thereby forming the shaft. The invention further relates to a method for assembling a roller for a roller grinder, said roller comprising a shaft and a grinding shell in the form of a generally tubular sleeve and having an inner face to be retained around the shaft.

Abstract: The disclosure relates to a roller crusher having two generally parallel rollers arranged to rotate in opposite directions, towards each other, and separated by a gap, each roller having a first end and a second end. The roller crusher includes a flange attached to at least one of the ends of one of the rollers. The flange extends in a radial direction of the roller, and has a height above an outer surface of the roller which is sufficient to extend across the gap substantially along a nip angle of the roller crusher. A feeding structure is formed on the flange and extends in an axial direction of the roller to engage material toward the gap.

Abstract: A cone crusher includes an inner crushing shell supported on a crushing head and clamped thereon by a retaining arrangement, the crushing head being arranged for rotating about a crushing head axis. The retaining arrangement includes a first portion of a threaded joint for self-tightening the retaining arrangement. The first portion is concentric with the crushing head axis and rigidly joined with the crushing head. A first portion of a form-fitting engagement arrangement is rigidly joined with the inner crushing shell. A crushing shell tightener is provided with a second portion of the threaded joint and a second portion of the form-fitting engagement arrangement. The form-fitting engagement arrangement rotationally locks the crushing shell tightener to the inner crushing shell.

Abstract: The present invention relates to a roller mill for coffee, a method for grinding coffee, and an application of grinding rollers for grinding coffee. In order to grind coffee, conventionally metal rollers are used which are subject to heavy wear and adversely affect the taste of the coffee. The object of the invention is to provide a roller mill for coffee, a method of grinding coffee and a corresponding application thereof that avoids these disadvantages. This is achieved by means of a roller mill for coffee with grinding rollers in opposite directions and having granite surfaces at a peripheral velocity ratio of the rollers 1:1.5 to 1.4, and by means of a corresponding application and corresponding method.

Abstract: The present invention discloses a paper cutting blade for a paper shredder, which paper cutting blade comprises two blade single bodies abutted against each other, in which said blade single body has an outer plane perpendicular to the axis of said blade single body and an outer circumferential surface located on the outer circumference of said blade single body with the axis of said blade single body as a symmetry axis, a blade edge is formed on the conjunction of said outer plane and said outer circumferential surface; when viewing from a longitudinal section of said blade single body, said blade edge is defined by an even straight line extending outwards along the radial direction of said outer plane and an curved line extending obliquely outwards along the axial direction of said outer circumferential surface.

Abstract: The present invention discloses a composite milling cone for compression crushers, said milling cone comprising a ferrous alloy at least partially reinforced with titanium carbide according to a defined geometry, in which said reinforced portion comprises an alternating macro-microstructure of millimetric areas concentrated with micrometric globular particles of titanium carbide separated by millimetric areas (2) essentially free of micrometric globular particles of titanium carbide, said areas concentrated with micrometric globular particles of titanium carbide forming a microstructure in which the micrometric interstices between said globular particles are also filled by said ferrous alloy.

Abstract: A knife and knife assembly for a planer side head. An L or an LV type side planer head is retro-fitted with knives having substantially less mass than the knives originally provided for these heads.

Abstract: A roll for use in processing crop materials in a crop processor apparatus is disclosed. The roll has a generally cylindrical cross-section and a plurality of alternating longitudinal ridges and longitudinal grooves on a surface of the roll. The longitudinal ridges having outer edges interrupted by gaps between the ends of the roll, forming tooth segments between the ends of the roll.

Abstract: A refiner or disperser blade is made of a steel alloy by casting. The alloy comprises, in weight percent: 0.6 to 4 wt-% carbon (C), 0.5 to 1.5 wt-% silicon (Si), 0.4 to 1.5 wt-% manganese (Mn), 12 to 28 wt-% chromium (Cr), 4 to 12 wt-% niobium (Nb), as well as iron (Fe).

Abstract: A method for the production of 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. The annular casing is cast of nodular cast iron with at least the alloying elements Ni and Mo. The cast body is given a bainitic structure with residual austenite by a subsequent heat treatment followed by controlled cooling. The outer surface is constantly re-hardened during use via pressure loading such that martensite is constantly formed in boundary layers of the outer surface.

Abstract: The invention relates to an elongated insert member (1) for a grinding roll for heavy wear operation. The insert member (1) comprises a core (2) of a first material having a first hardness, said core (2) having an extension in the longitudinal direction of said insert member (1), and a body (3) of a second material having a second hardness, said body (3) enclosing said core (2). The first hardness is greater than the second hardness. The invention also relates to a cassette and a segment for a grinding roll, a grinding roll and a roll machine.

Abstract: An article in the form of one of a plate, a sheet, a cylinder, and a portion of a cylinder, which is adapted for use as at least a portion of a wear resistant working surface of a roll is disclosed. The article includes a metal matrix composite comprising a plurality of inorganic particles dispersed in a matrix material. The matrix material includes at least one of a metal and a metal alloy, wherein the melting temperature of the inorganic particles is greater than the melting temperature of the matrix material. A plurality of hard elements are embedded in the metal matrix composite. The wear resistance of the metal matrix composite is less than the wear resistance of the hard elements, and the metal matrix composite preferentially wears away when the article is in use, thereby providing or preserving gaps between each of the plurality of hard elements at a working surface of the article.

Abstract: A grinding roller for the high-pressure comminution of granular milling material, having a reinforcement with hard bodies which protrude from the surface of the main part of the grinding roller. At least some of the hard bodies have a continuous recess, wherein the recess extends in the radial direction of the grinding roller. Refurbishing the surface of the grinding roller is substantially simplified by the continuous recess.

Abstract: A device for mechanical defibration of wood comprises a defibration surface for processing of wood raw material and loosening of fibers, said defibration surface comprising grinding grits fastened on a metal base surface. The grits (1) fastened on the metal base surface (2) are positioned within a determined distance from each other on the base surface, so that they form a regular defibration surface.

Abstract: A powder processing apparatus includes a main body portion having a cylindrical rotor rotating at a high speed, and a cylindrical stator arranged coaxially with the rotor, outside the rotor with a gap therebetween; a supply port provided at one end of the main body portion, and supplying a processing raw material into the gap together with an airflow; and a discharge port provided at the other end of the main body portion, and discharging, from the gap, a processed product obtained by spheroidizing the processing raw material between the rotor and the stator. In the inner peripheral surface of the stator, there are provided circumferential grooves orthogonally intersecting the axis line of the stator, or a spiral groove forming an angle of not less than 60 degrees and less than 90 degrees with respect to the axis line.

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 shredder for reducing material which includes a conical cutting drum rotatably positioned within a housing and having an imperforate outer surface so as to carry shredded material radially with and externally of the drum; at least one cutting implement disposed about the outer surface of the cutting drum; an anvil disposed adjacent to the cutting drum; a bellyband wrapping around and conforming to the drum; and a transition interconnecting the bellyband with a discharge port and having a cross sectional configuration that inversely mirrors the cross sectional configuration of the bellyband.

Abstract: An adjustable grinder, includes a container, a stator, a rotor, a drum, and a rotary slide. The container can hold a product to be ground. The stator is positioned on the container. The rotor is positioned opposite to the stator and can rotate with respect to the stator. The stator and the rotor each contain at least two rows of teeth to grind the product therebetween. The drum is positioned around the rotor. The rotary slide includes a pointer that can be adjusted such that a distance between the stator and the rotor increases or decreases. Additionally, the stator may include at least two extended teeth.

Abstract: A gyratory crusher has an outer shell, which is attachable in a frame having a frustoconical supporting surface, which is facing obliquely downwards and inwards. The outer shell has on the outer surface a collar, which has outer lugs, which are movable, from below, past the supporting surface and between inner lugs of a ring. The inner and outer lugs have mutually corresponding contact surfaces, which are adapted, by relative rotation of the ring and the outer shell, to be positioned opposite each other and, upon lifting of the ring, to lift also the outer shell so that a lower portion of the outer shell abuts the supporting surface of the frame. The contact surfaces of the inner and outer lugs are arranged such that lifting of the ring causes the outer lugs to be lifted by means of the inner lugs and brings the inner and outer lugs into radial abutment against each other.

Abstract: The invention relates to a milling roller of a high-pressure material bed roller mill, having profile-members which are embedded with a portion of the length thereof in holes of the roller body and, with the remainder of the length thereof, protrude above the surface of the roller body, with, when the milling roller is new, the holes having different depths and the profile-members having different lengths in differently loaded part-regions of the width of the roller body. Such a construction brings about a long service-life for the roller and cost-effective reconditioning after operational wear with a production operation which reduces costs.

Abstract: A knife and knife assembly for a planer side head. An L or an LV type side planer head is retro-fitted with knives having substantially less mass than the knives originally provided for these heads.

Abstract: A refiner or disperser blade is made of a steel alloy by casting. The alloy comprises, in weight percent: 0.6 to 4 wt-% carbon (C), 0.5 to 1.5 wt-% silicon (Si), 0.4 to 1.5 wt-% manganese (Mn), 12 to 28 wt-% chromium (Cr), 4 to 12 wt-% niobium (Nb), as well as iron (Fe).

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: A shredder for reducing material which includes a conical cutting drum rotatably positioned within a housing and having an imperforate outer surface so as to carry shredded material radially with and externally of the drum; at least one cutting implement disposed about the outer surface of the cutting drum; an anvil disposed adjacent to the cutting drum; a bellyband wrapping around and conforming to the drum; and a transition interconnecting the bellyband with a discharge port and having a cross sectional configuration that inversely mirrors the cross sectional configuration of the bellyband.

Abstract: Shredder hammers include a hammer pin opening in which at least some portion of the interior surface is curved in a direction moving from one major surface of the shredder hammer to the other. This interior surface may be smoothly formed as an arc of a circle, as a parabola, as a hyperbola, or as another curved surface, with the local extrema within the interior of the hole (e.g., at or near the center). Providing the curved interior surface helps vary and disperse the locations where force is absorbed due to contact between the hammer pin and the walls defining the hammer pin opening when the shredding hammer blade contacts the material to be shredded. Other structures include engagement between the hammer pin and the hammer as part of a bushing member, a spool or sleeve member, or a ball swivel member.

Abstract: A method and apparatus for separating long, unwound items like fiber, fiber strands, yarn, etc. into short lengths is disclosed. The apparatus has a backup roll, a blade roll that uses novel dummy blade slot fillers between each pair of chopping blades on the blade roll to eliminate or substantially reduce vibration normally encountered when making longer chopped lengths of chopped product.

Abstract: The invention relates to a milling roller of a high-pressure material bed roller mill, having profile-members which are embedded with a portion of the length thereof in holes of the roller body and, with the remainder of the length thereof, protrude above the surface of the roller body, with, when the milling roller is new, the holes having different depths and the profile-members having different lengths in differently loaded part-regions of the width of the roller body. Such a construction brings about a long service-life for the roller and cost-effective reconditioning after operational wear with a production operation which reduces costs.

Abstract: The present invention relates generally to brush cutting heads, and more specifically, to protective guard members for cutting tooth assemblies mounted on brush cutting heads. A brush cutting head includes a support body having a first end, an opposed second end and an intermediate portion extending therebetween. The intermediate portion has an outer surface. A plurality of collars is mounted to the support body at spaced intervals along the intermediate portion with each collar extending outwardly from the outer surface. The brush cutting head further also has a plurality of cutting teeth assemblies carried on the outer surface of the support body. Each cutting tooth assembly is associated with at least one collar. Also provided is at least one guard member for protecting at least one cutting tooth of the plurality from impacts with hard objects. The at least one guard member is carried on one of the collars with at least a portion thereof projecting beyond the outermost edge of the one collar.

Abstract: A stump grinding wheel tooth assembly having a mounting block positioned around the periphery of the wheel and a cutting bit attached to the mounting block by a pin passing through a hole in the cutting bit and a corresponding hole in the mounting block and capped by a nut. The mounting block may support multiple cutting bits arranged into a predetermined patterns based on the location of the holes, such as pairs of cutting bits or even a quad formation. The cutting bits may be provided in various geometric configurations, such as round, triangular, square, rectangular, pentagonal, hexagonal, octagonal or decagonal.

Abstract: The invention refers to a cutting tool for comminution devices, comprising a knife (2) or knife edge which can be fastened to a comminution cylinder or a toothed body (1). The invention is characterised in that the knife (2) can be arranged non-positive and positive interlocking at the comminution cylinder or the toothed body (1).

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: A comminuting machine rotor assembly comprising rotors carried by a shaft for conjoint rotation with the shaft, hammer heads carried by the rotors and extending radially outwardly from the shaft, and hammer inserts releasably attached to respective ones of the hammer heads. There is a wear material coating over at least a first cutting edge of an insert body of each insert. The first cutting edge of each insert body is defined by a front facet generally facing the direction of assembly rotation, a radially outer end facet adjacent the front facet, and an intervening radially distal corner of the hammer insert formed at the intersection of the front and end facets. The front and end facets are disposed at a relative angle of greater than 60 degrees to one another.