Abstract: A liner for a corrugated debarking drum having a continuously undulating outer wall with an interior surface including an axially extending concave portion includes an elastomeric compressible body having an inner surface adapted to be positioned over the concave portion and an outer surface opposite the inner surface and a support secured to the body and adapted to be bonded to the interior surface without perforating the outer wall.

Abstract: A workpiece cleaning mill that is useful for cleaning castings includes a hollow housing that is established by arranging plural elongated manganese flights side-by-side to establish a cylinder, and attaching the flights to opposed entrance and exit rings. A feed conveyor feeds workpieces into the entrance end, and an exit conveyor conveys the workpieces away from the exit end. Media throwers are disposed at each end to throw high-speed cleansing media, such as shot, into the housing. The housing is rotated as the workpieces move, under the influence of gravity and/or following workpieces being fed into the housing, from the entrance end to the exit end while being bombarded with shot. Steel mesh curtains at each end block the media from passing outside of the mill. Spent media falls through perforations in the flights, and the spent media is conveyed back to a media hopper and thence to the media throwers for reuse. Magnetic valves regulate the amount of media thrown by the throwers.

Abstract: An adapter for mounting a liner to a first mill having an inner diameter with a first contour. The liner has a back face with a second contour shaped for mating with a second mill. The adapter includes a top face and a bottom face. The top face supports the back face of the liner. The bottom face has a contour formed for mating with the contour of the first mill.

Abstract: A lining member for a rotary grinder in the shell of which the member forms a series of corrugated cylindrical surfaces intersected by rings defined by transverse projections (12) on the lining members. The corrugations on each member are at an angle to the shell generatrix along at least a part of the length of the member. The member is suitable for grinders in cement works or the mining industry.

Abstract: A continuous flow, rotary processing apparatus for horizontal transport of material at a predetermined rate. Material from an infeed conveyor enters a continuous system including at least one rotary drum operating about a horizontal axis. Each drum has a perforated circumferential wall with lateral lifters to induce flow and tumbling motion to the enclosed material. A flow control mechanism at the discharge end of each drum controls residence time of the material being processed. Material is fed and discharges from each drum through axial openings in which the flow control devices are mounted.

Abstract: The lifting element (16) consists of a parallelepipedal block of elastomer designed to be fixed to the internal wall of a grinding mill and forms part of the lining of the latter. Its face (24) exposed to the grinding elements includes cavities (26) to allow the grinding elements to be embedded therein.

Abstract: In a grinding mill, a polymeric filler material is molded into the rectangular or prismatic recesses in a metallic or ceramic lining. In a grinding mill where longitudinally extending elongate ribs of the lining have two different radial thicknesses or heights, with relatively narrow bars and relatively thick bars alternating with one another, the filler material is initially cast to have a cylindrical or undulating inner surface. Where the surface is cylindrical, the filler material is worn away during use of the grinding mill and gradually conforms to the alternating narrow and thick bars to assume an undulating inner surface. Supplemental lifter bars may be embedded in the grid and rubber filler material during the casting process. Where the lining is assembled from elongate wedge-shaped metallic or ceramic bas and spacers, the bars and spacers are provided in modular forms with the spacers as wing-like extensions on the bars. Ceramic or other hard particles are embedded in the filler material.

Abstract: The invention relates to a lifter bar intended to be mounted internally in a rotating mill drum for grinding ore and minerals. According to the invention, the upper portion of the lifter bar has a carcass of metal, comprising an elongated forward wall element facing in the direction of movement of the wear element, an elongated rear wall element and between these two wall elements transverse wall elements, the wall elements of the carcass defining between them a plurality of spaces, which are at least partially filled with a filler of another material than any of the components of the mill charge, and of greater abrasive specific volume loss than the metal of the carcass.

Abstract: A crusher comprises a cylindrical body, a lining supported by a portion of the cylindrical body and forming an annular track, the supporting cylindrical body portion having a prismatic interior surface, and at least one roller arranged to roll on the annular track. The lining consists of plates having a concave interior surface shaped to form a rolling surface of the annular track and a flat exterior surface resting on the prismatic interior surface of the supporting cylindrical body portion. This reduces the risk of breakage of the lining plates under the pressure applied thereto by the roller.

Abstract: According to the invention there is provided a mill drum comprising a hollow drum structure in use mounted to rotate about a substantially horizontal axis extending longitudinally through the bore of the drum structure. The drum structure including lifter means mounted thereto to extend into the bore of the drum structure. The lifter means in use when the drum structure rotates and material to be ground has been introduced into the drum structure, selectively catch and scoop up larger parts or fragments of the mill contents from the bottom of the drum structure while allowing smaller particles to remain at the said bottom. The lifter members thereafter drop the scooped up parts or fragments at or towards the upper end of the rotating drum structure causing the parts or fragments to fall onto the rest of the contents at the bottom of the drum structure and thus causing a milling action.

Abstract: A discharge assembly mounts inside a grinding mill on a mill shell at a discharge end of the mill and rotates about a longitudinal axis of the mill. The discharge assembly includes a plurality of ring sections forming an assembly covering the mill shell at the discharge end. Each ring section has an outer surface supported on the mill shell and inner surfaces forming a radially extending discharge passageway. Each ring section connects to an adjacent ring section to form a lapped joint therebetween and additional radially extending discharge passageways. Each lapped joint seals the mill shell from the discharge passageway to prevent discharged material contained therein from wearing the mill shell.

Abstract: An arrangement for recording the instant volume of grinding charge in the mill drum of a rotary drum mill of the kind provided with an internal lifting device. In order to enable the volume of grinding charge to be used in a better way as a parameter for controlling mill operation, the lifting device is resilient and is provided with a load detecting device which, during each drum revolution, detects when the lifting device comes into engagement with, and is in engagement with the grinding charge present in the drum and leaves, or is caused to leave, engagement with the grinding charge. The arrangement also includes a tension sensing device which registers the tension on the load detector, this tension being contingent on the load to which the lifting device is subjected by the grinding charge.

Abstract: An apparatus for dispersing and grinding a material by means of a grinding medium, such as balls or beads, comprises a grinding vessel, and a rotor rotatably disposed in the grinding vessel to define a narrow annular flow path between the rotor and the inner wall of the grinding vessel. On the outer peripheral surface of the rotor, a set of guiding protrusions is disposed for guiding, in the circumferential direction, the flow of a mixture of the grinding medium and material flowing within the annular flow path. Inside the rotor, an inside flow path extends in the axial direction and a backward screw is disposed for returning the grinding medium in the inside flow path to the upstream side of the grinding vessel. The grinding medium gathering at the downstream side of the grinding vessel efficiently enters the inside flow path through inflow conduits provided on the rotor, the grinding medium and is urged backwards toward the upstream side by the backward screw.

Abstract: The invention relates to a method of operating a stirring ball mill which has a preferably cylindrical, rotating barrel provided with an inlet at one end and an outlet at the other end, in which a stirring shaft provided with stirring means rotates. This method includes operating the mill at supercritical rotatory speed with a degree of fill of at least 25%, while the balls are retained in the mill. In this manner a great throughput is achieved and a narrow grain size range, without requiring a great amount of space.

Abstract: A tube mill comprises a coarse grinding compartment and two or three independent fine grinding compartments. Material fed into the mill is first ground by a coarse grinding compartment and then shunted into two or three portions which are conveyed into each corresponding fine grinding compartment. The mill of the invention has resolved the problems of overgrinding and unmatched grinding capability in each compartment of conventional tube mill, and increase output and decrease power consumption greately, so as to become a high eficiency mill. Further, the tube mill of the invention has the advantages of simple structure, ease for operation and low investment. It can be adapted for both reformation of prior tube mill and construction of new tube mill.

Abstract: The exchangeable wear-resistant element serves to protect structural parts against abrasive wear. This exchangeable wear-resistant element comprises a base part formed of a tough material and a support part formed of a material possessing high wear resistance. The base part and the support part are interconnected at confronting faces or surfaces and the base part is provided with an attachment element.

Abstract: A method and apparatus for recycling wallboard employs a tumbling barrel for receiving wallboard pieces and metal weights. The tumbling barrel is sealed and the barrel is rotated so as to drop the weights against the wallboard. Once the materials are separated into gypsum and relatively large pieces of paper, the barrel doors are opened and the materials are transferred to a vibrating conveyor including a number of filtering screens for segregating the gypsum into consistently sized particles. A screen across the conveyor prevents the paper from continuing beyond a trap point. A chute transfers the paper particles to a paper collection bin while various sized gypsum particles are collected at the end of the conveyor in several bins according to size.

Abstract: A wear member for use in quarry chutes and the like utilizes a plurality of wear strips with a layer of resilient material therebetween. The resilient material may be a natural rubber or synthetic material as urethane. A bottom mounting plate engages a T-shaped base plate mounted to the chute to hold the wear member in an array on the chute surface.

Abstract: A ground sand maker which includes a grinding drum (2); a mass of working pebbles (25) placed within the grinding drum; a driving device (7) for rotating the grinding drum; an inlet port (17) provided on a first end (2b) of the grinding drum for supplying rock fragments (28) and water (26) into the grinding drum; and an outlet sieve (20) provided on a circumferential surface (2a) of the grinding drum adjacent a second end (2c) opposite to the first end for discharging ground sand and water.

Abstract: An internal lining for cylindrical ball mills has riffles approximately extending in circumferential direction and webs located between the riffles and further has elevations and/or depressions arranged transversely to the circumferential direction. This allows fine grinding between the balls and the riffles. The balls are lifted to a higher level by the elevations and/or the depressions and the balls are better agitated within the heap of balls effecting coarse grinding.

Abstract: A vibratory material handling apparatus is provided for mixing of materials, cleaning, blending and/or shake-out of castings or the like. The apparatus comprises a container having a curved or arcuate material supporting surface disposed about a generally horizontal longitudinal axis wherein the material supporting surface has a plurality of generally circumferential, parallel troughs disposed about and extending along the longitudinal axis. The container, which is carried by a frame, is resiliently mounted to a mounting surface. The apparatus further comprises a vibration generator mounted on the container for producing vibratory forces directed along a linear path displaced not only from the longitudinal axis but also from the center of gravity of the container. With this arrangement, the troughs are arranged to direct materials upwardly and forwardly to establish a path of tumbling movement in a direction from a material input end toward a material discharge end of the container.

Abstract: A ball tube mill includes a rotatable housing with a lined inside surface and end cover plates having an inlet hole and an outlet hole and accommodating at an angle to its longitudinal axis at least one perforated wall dividing the housing into coarse and fine grinding chambers charged with grinding bodies. The lined inside surface of the chambers has the form of truncated cones facing by their large bases the perforated wall, the angle of inclination of a generating line of the truncated cones equalling the angle of the slope of the grinding bodies present in the respective chamber, the volume of the coarse grinding chamber being smaller than the volume of the fine grinding chamber.

Abstract: A wear resistant lining element for a rotary grinding mill. The element, which is made of elastomeric material, is provided on its leading side with respect to rotation with a hard wear layer made, for example, of steel. The hard wear layer is backed and supported by the elastomeric material of the element to which it is secured by chemical and/or mechanical bonding. With this arrangement, the elastomeric component cushions the hard wear layer and provides damping during grinding impact and minimizes cracking of the hard layer and scrap loss.

Abstract: A rocker barrel usable in conjunction with a blast stream of abrasives for the cleaning of work pieces. The rocker barrel is of the shallow depth bed type and is mounted for oscillation. The rocker barrel is provided internally with rocker members which will engage both smaller work pieces, such as engine heads, and larger work pieces, such as engine blocks, to effect the tumbling of such work pieces as the rocker barrel oscillates and at the same time maintaining work pieces within the rocker barrel always within the blast stream so as to prevent the blast stream from being directed against the rocker barrel.

Abstract: A cylindrical grinding mill liner comprising a continuous uninterrupted internal helical fluting extending along the length of the liner. A cylindrical grinding mill with an inner liner comprising a continuous uninterrupted internal helical fluting for the grinding or crushing of ore. A method for segregating or distributing ore particles and grinding bodies along a cylindrical grinding mill with the larger sizes at the feed end and the smaller sizes at the discharge end.

Abstract: A lifting element (5) for pipe coolers for material produced at least partially in lumps, e.g. clinker, has a mounting portion (8) fixed to the shell (1) of the pipe cooler, and a carrier portion (9) which extends essentially at right angles thereto and comprises at least one aperture (15; 24,25) passing through it. It may be of fork-like construction, with each aperture (24, 25) located between two tines (21, 22, 23).

Abstract: The invention is an improved system for separating waste products into several components and then providing for total utilization thereof. The systemitized arrangement integrates numerous automatic operations to produce the separation of the components and then provides for automatically directing the separated components to ultimate destinations for total utilization. The system first processes bulk waste products such as garbage, rubbish, and other discarded material and shreds it into small size particles. The shredded waste products are then mixed with sewage sludge received from another source. The mixture is then processed through a controlled sludge composting means. At this point a first benefit is derived by means of hot exhaust air from the controlled sludge composting means being directed to a hot house structure to aid in the growth of food products.

Abstract: This invention relates to a wear means, which is arranged within a rotary drum barker as a wear protection of the drum mantle and is connected with this by means of a bolt joint. In rotary drum barkers the regions, where discharge openings for the bark are arranged, are subjected to a heavy wear. Therefore the wear means of the invention are preferably arranged in these areas. What characterizes the wear means of the invention is that it includes a wear body (4) of wear-resistant rubber and a prestressing means (13) which is connected to the wear body (4) so that it absorbs forces. Moreover, the wear means has a sleeve-shaped central portion (15) in connection with the prestressing means (13), the central portion (15) extending into a hole (17) in the drum mantle (1) of a bolt (6) included in the bolt joint and surrounding this.

Abstract: Solid waste incinerator fuel is preclassified by passing it through a hollow rotating cylindrical drum which has two sets of extensions from the wall going lengthwise along the length of the drum, the first set toward one end and the second toward the other, the second set being shorter or smaller-sized than the first and the first preferably having rodlike projections which may have at least partly knifelike or bladelike ends or edges at the axial or inner ends thereof. The first set of extensions homogenizes the incoming waste by lifting, dropping, churning, and ripping it as well as fluffing it. The second set of extensions, preferably angled, lifts smaller sized heavier, non-combustible particles to the upper part of the drum from which they are removed at the exit end. The lighter material, mostly combustibles such as paper, textiles and wood, for example, is discharged toward the bottom of the exit end of the drum.

Abstract: An autogenous mill for breaking up rocks comprises lifter bars and carriers. The lifter bars have angles of inclination so as to achieve the maximum efficiency of the mill with respect to lifting the rocks and causing them to fall. The angles of inclination of the carriers are also chosen so as to achieve the maximum efficiency of the carriers for lifting the crashed fines and causing them to exit the mill. The angles of inclination of the carriers is smaller than that of the lifter bars.

Abstract: A wear-resistant rubber product adapted to be used as, for example, a lifter in grinding mills, comprises at least two prefabricated parts (11, 12) interconnected with one another by means of a binder layer having a thickness of at least 2 mm and consisting of in situ cast and cured polyurethane. The wear-resistant rubber product is manufactured by placing the prefabricated cured rubber parts (11, 12) at a distance of at least 2 mm from one another and by introducing, preferably injecting a reacting urethane rubber composition with excess isocyanate groups into the gap (13) to cause said prefabricated parts on either side of said gap to be contacted subtantially simultaneously by the said urethane rubber composition.

Abstract: In order to enable a satisfactory degree of barking when removing the limbs and bark from wood in a barking drum having internally a plurality of log lifters and a plurality of slots arranged around and along the drum for the discharging of waste material freed, said drum comprising two axially aligned drum halves each comprising a main treatment section with a transition section located between them, said transition section is provided with a separating section comprising an arresting surface for the waste material and an annular outlet opening cooperating with the arresting surface and arranged in the dividing plane between the two drum halves, for discharging limbs and bark caught by the arresting surface.

Abstract: A mill liner for a dry autogenous mill includes low profile end liner elements at the ends of the mill incorporating radial ribs with proper height to provide significantly improved mill performance without sacrificing the grinding efficiency. Shell liner elements are also provided with lifter bars as an integral part thereof to simplify maintenance work as well as reduce scrap losses. For the larger size mills, the shell liners are preferably made of a three piece design, a middle section and two identical end sections, thus permitting the middle section which bears most of the wear to be replaced without having to replace the two end sections.

Abstract: Among a plurality of liners installed in the inner circumference of a rod mill, lifters are partially removed from liners which contact portions of rods to be bent by the rolling of rods during the operation of a rod mill, thus alleviating the bending of rods and equalizing the amount of wear on all liners.

Abstract: This invention relates to a wear metals lining of rubber for rotatable drums with several adjacent sections of separate lifting members, and separate lining plates arranged between these, the lifting members being pressed against the wall of the drum by means of rails secured by mounting bolts, retaining adjacent lining plates and being provided with slits, in which the rails are placed. In order to be able to use soft rubber in such a lining, i.e. a rubber with a hardness below 60 Shore, in the lifting members without giving up the demand on an elastic attachment at least the parts of the slit (4), on which the mounting rail (7) bears, are provided with a fabric (11) taking up the tensile forces arising when the lifting members (3) are exposed to a lateral load.

Abstract: A liner plate for grinding mills includes a short integral lifter bar section having a bolt receiving hole therethrough for securing the plate to the shell of a grinding mill. A replaceable lifter bar section fits onto the liner plate in alignment with the integral lifter bar section. Aligned bolt receiving holes in the replaceable lifter bar section and the plate receive bolts for securing the liner plate and the replaceable lifter bar section together and to the grinding mill shell. Replacement of the replaceable lifter bar section is possible without releasing the entire plate from the shell of the grinding mill.

Abstract: In order to effect removal of both limbs and bark from wood, such as trimmings or trees removed in thinning, with satisfactory results in a barking drum, the drum proper comprises a cylindrical pretreatment section of large diameter, a tapering transition section and a cylindrical final treatment section of smaller diameter. In the pretreatment section, which has a larger number of log lifters, an intensive treatment of the bundle takes place, so that the stems of the trees are exposed while branches and twigs are crushed. In the transition section, which has only half the number of log lifters, the tumbling motion of the wood subsides and a change-over takes place to parallel barking, which is concluded in the final treatment section, where the number of log lifters is again increased, suitably up to the original number. The pretreatment section is preferably preceded by an infeed section with infeed means arranged on the inside for quick feeding-in of the bundle of trees into the pretreatment section.

Abstract: In autogenous mills, lifters used on shell and end linings are so constructed with their teeth tilted toward the direction of rotation of the mill in such a way that teeth of lifters statistically coincide to the mean velocity of falling rocks relative to moving lifters.

Abstract: A method and arrangement for support of contact elements for material treating applications are disclosed in which a hardenable liquid bonding material is flowed into a space provided between surface areas of support and contact elements, the material being allowed to harden to provide a solid element which acts in compression to resiliently oppose relative movement of the elements. The space preferably has a cross-sectional configuration such that a wedging action is developed in response to relative movement of the elements. The holding element may be effectively burned out for removal and replacement of the contact element.

Abstract: A mill liner for a dry autogenous mill includes low profile end liner elements at the ends of the mill incorporating radial ribs with proper height to provide significantly improved mill performance without sacrificing the grinding efficiency. Shell liner elements are also provided with lifter bars as an integral part thereof to simplify maintenance work as well as reduce scrap losses. For the larger size mills, the shell liners are preferably made of a three piece design, a middle section and two identical end sections, thus permitting the middle section which bears most of the wear to be replaced without having to replace the two end sections.

Abstract: The disclosure is directed to an improved liner assembly for an ore grinding mill. The liner assembly is of the segmented type, comprising a first plurality of holder segments which are mounted directly to the shell of the mill, and a second plurality of wear segments which are mounted to the shell in overlying relation to the holder segments, which are thus virtually unexposed to the ore comminution process and wear very slowly. The wear segments are formed with a plurality of downwardly projecting bosses which are received in similarly configured recesses formed within the holder segments. Mounting openings or bores are formed in the wear segments, extending from the top grinding surface to the center of each boss to receive a mounting bolt that extends through both segments and projects externally of the shell to receive a threaded lock nut. These mounting openings are countersunk so that the heads of the mounting bolts securing the wear segments are substantially recessed from the grinding surface.

Abstract: This invention relates to an attachment device for wear rubber elements in barking drums and has as its object simplifying the mounting of such elements by avoiding unnecessary drilling of mounting holes.According to the invention the wear rubber elements are retained at their longitudinal edge sections by mounting bars, for the anchoring of which in the shell plate of the drum bark outlets are utilized.

Abstract: A barrel apparatus for use in treating workpieces with grinding media, comprising a novel rotary barrel provided on its inner peripheral wall with a spiral flight extending lengthwise of the barrel and one or more ancillary flights extending straight or in an extremely modulated spiral form lengthwise of said barrel and intersecting the spirals of said first spiral flight, thereby accelerating the flow of the contents in the barrel to improve grinding efficiency, and further, permitting smooth delivery of the contents even when a small amount of the contents is present in the barrel.

Abstract: A mill lining is disclosed, intended for e.g. a primary or autogenous mill in the mining industry. The lining comprises shell plates and lifter bars made from elastomer material and mounted in a mill drum. The lifter bars extend substantially in the axial direction of the mill drum and project into the mill drum beyond the inner surface of the shell plates. At least some of the lifter bars, preferably every second, are designed to act as elastomer springs by having a longitudinal recess or slot in their impact front side facing forwardly in the contemplated direction of rotation of the mill drum. The recess or slot is inside the inner surface of the shell plates and serves as a strain concentrator concentrating the tensile strain of the lifter bars to an area relatively unexposed to sliding abrasion of the material being ground.

Abstract: The disclosure is directed to an improved liner assembly for the drum or shell of an ore grinding machine, comprising a first plurality of liner segments mounted directly to the shell and a second plurality of segments each of which is secured to one of the first segments independently of the shell. In the claimed embodiment, each of the first segments defines a longitudinal, axially extending channel that opens toward the center of the shell and has opposed inner surfaces that converge toward the shell center. The first segments are secured to the shell by nut and bolt assemblies that extend through the segment from the bottom of the channel and through the shell. The second segments are constructed for lengthwise insertion into the channel, and each has converging sides conforming to the channel sides for retention therein, while at the same time protectively overlying the nut and bolt assemblies during the grinding process.

Abstract: The disclosure is directed to a multiple zone liner system for the cylindrical shell of a ball mill. The liner system comprises a plurality of liner sections which are constructed for mounting on the inner shell surface of the mill in sequential relation along its rotational axis. Each liner section is formed with a plurality of elevated ridges disposed in substantial alignment with the shell access, and which are circumferentially spaced therearound to define a comminuting surface. Each ridge defines a lifting surface that is disposed at a predetermined angle relative to a radius of the shell, and each ridge has a predetermined lifting dimension. The number of ridges of each liner section increases from section to section from the inlet to the outlet of the mill. The angle of the lifting surfaces of the ridges also increases from section to section toward the mill outlet. The lifting dimension of the ridges decreases from section to section from the mill inlet to the outlet.

Abstract: The disclosure is directed to an improved liner assembly for an ore grinding mill. The liner assembly is of the segmented type, comprising a first plurality of segments which are mounted directly to the shell of the mill, and a second plurality of segments each of which is secured to an associated first segment independently of the shell. The first segments are formed from material which is resistant to impact, and the second segments are made from material which is highly resistant to abrasion. As constructed, the second segments can be replaced after a period of wear from inside the mill, avoiding the necessity of replacing the first liner segments which requires working teams both inside and outside the mill. In one embodiment, the second segments are L-shaped and are secured to the first segments by nut and bolt assemblies that are generally aligned with the shell surface to resist shear forces.

Abstract: According to the present invention there is provided slurrying apparatus comprising a rotatable drum arranged for rotation about its longitudinal axis and including a slurrying chamber portion so arranged that when the drum is rotated feed material passes from an inlet of the slurrying chamber portion to a discharge chamber portion of the drum in which slurry and fine particles are separated from coarser particles and are discharged separately, and rotation means for causing rotation of the drum.

Abstract: A lining for grinding mills is formed by generally rectangular plates having integral raised lifter bars extending across diagonally opposite corners, and bolt receiving holes extend through the plates and lifter bars for securing the plates within a grinding mill. A lining formed by the plates has spiral ribs formed by cooperating lifter bars on diagonally adjacent liner plates.

Abstract: The liner covering the inner wall surface of the drum of a grinding mill comprises a plurality of rectangular lining units each having an inner working surface inclined to approach the drum centerline from its upstream end to its downstream end, the lining units being in mutual dispositions such that lining units which are mutually adjacent in the drum rotational direction are mutually staggered in the drum longitudinal direction, and each lining unit is provided at its leading side part in the rotational direction with a concavely curved guide surface joining in a continuously flush manner the inclined working surface of the adjacent lining unit in the rotational direction.