Abstract: Manufactured goods such as cast components to which molding sand is still adhering, are treated in a vibratory conveyor chute for cleaning and cooling the goods. As the goods travel down the chute they are exposed to force components extending perpendicularly and across to the travel direction along the length of the chute. These force components impose on the goods a revolving motion along a helical path. This revolving motion may be improved or intensified by directing the resulting force components (R, R') of the force causing the revolving motion to extend at a spacing from a so-called "center of gravity line" (S, S') defining or interconnecting the center of gravity points along the length of the vibratory chute system. This spacing causes a distribution of the goods (11) in the chute such that the goods (11) have a slanted surface (10) in the chute (1). Thus, the vertical acceleration values (k.sub.v) are larger at the upper return zone 26 than they are at the lower return zone 27.

Abstract: The comminuting apparatus for waste consists of a housing (1), which is circular in cross-section and defines an upright feed hopper accessible from above and which has a bottom (2) as a lower termination of the interior of the housing. Disposed in the vicinity of the bottom is a discharge opening (12) for comminuted material. In the interior of the housing there is a driven rotating substantially plate-shaped tool (6) which has an external diameter substantially corresponding to the internal diameter of the housing and is secured to a drive shaft (5) extending coaxially through the bottom (2) into the interior of the housing. The plate-shaped tool (6) is constructed in the form of a combined screening and centrifugal plate (6) which is provided with screening holes (8) only inside its closed circular peripheral edge and which sets the material in the feed hopper in circulating motion.

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: In a centrifugal crusher including a rotor rotating at high speed for receiving a supply of material to be crushed, and a crushing chamber enclosing the rotor, the material is thrown out of the rotor in a tangential direction by centrifugal forces into collision with a dead-bed constituted by particulate material stacked in a heap in the crushing chamber after being produced by crushing the material. The particulate material brought into collision with the dead-bed is allowed to stay in the crushing chamber for a period of time long enough to serve as a dead-bed for crushing the particulate material into particles of a desired particle size, before being discharged continuously or periodically from the crushing chamber.

Abstract: A system (10) particularly suited for reclaming used foundry sand by means of thermal reclamation. The subject system (10) includes, arranged in cooperatively associated series relation, thermal reclaimer means (14), post reclaimer means (15), primary cooling means (16), separator means (18), classifying and dust removal means (19), scrubber means (20) and secondary cooling means (22). The used sand, which preferably is first fed through a lump-crusher, shake-out apparatus (12), is made to pass through thermal reclaimer means (14) while being heated to a predetermined temperature for a preestablished period of time in order to accomplish the burning away of the organic materials, i.e., matter, which are present in the used sand. From the thermal reclaimer means (14), the used sand passes to and through the post reclaimer means 15 for further reclaiming and then to and through the primary cooling means (16) wherein the heated sand is cooled to a suitable temperature.

Abstract: In an apparatus for treating liquid dross wherein the dross is situated in a skimming trough and charged into a rotating, substantially horizontal cooling pipe through which it passes so that the dross is cooled to a temperature below the melting point thereof to obtain a granulated form, the dross is charged from the skimming tank into the cooling pipe and passed therethrough substantially in the absence of air or oxygen whereupon the cooled granulated dross is subjected to an autogenous grinding process, the ground dross then being separated into a granulated metal fraction and a fine-grained fraction. According to the apparatus of the invention, a hood is located over the inlet side of the cooling pipe so that the entrance of air into the pipe is substantially prevented. The skimming trough is sealingly engaged to the hood so that the dross is charged from the skimming trough into the cooling pipe without any substantial contact with the air.

Abstract: A continuous high speed grinding and disperser mill and classifier for fluids is enclosed. The mill permits a high flow rate and thus does not require cooling. It comprises an enclosed vessel having an annular wear ring in the approximate center of the vessel, a shaft rotatable about a vertical axis extending into the vessel terminating at an end in the approximate center of the vessel, an impeller attached to the end of the shaft adapted to rotate within the wear ring, the impeller being in the form of a circular disc with a plurality of shear blades at the periphery producing a high shear zone between the blades and the wear ring. An inlet is provided in the vessel directly below the impeller on the vertical axis and an outlet in the vessel positioned at a predetermined height directly above the impeller on the vertical axis such that a flow of fluid from the inlet to the outlet passes through the high shear zone. Means are provided to rotate the shaft and impeller.

Abstract: A drum mill intended for autogenous or semi-autogenous wet-grinding processes has a screening wall, which is arranged adjacent an end wall provided with a hollow material-discharge trunnion and which separates said end wall from the grinding space, whereat said screening wall has at least one first group of relatively small grate openings through which fine material ground in the mill constantly leaves the grinding space and departs through the discharge trunnion, and at least one second group of relatively large openings through which mixed material, comprising both fine and coarse material, can leave the grinding space. This second group of openings communicates with an individual material outlet via a switching means by which the material mixture passing through said second group of openings can be prevented from leaving the mill.

Abstract: An apparatus is disclosed for feeding a fluid to a rotary body such as a cylindrical rotary mill. A rotary annular manifold is connected to the mill. A plurality of orifices in the face of the manifold, each with normally closed valves, allows the fluid to enter the manifold for subsequent distribution to the rotary mill. Fluid is transmitted to the rotary manifold from a stationary manifold. Fluid is transmitted to the stationary manifold from a fluid source. The stationary manifold has a cavity which is positioned against the rotary manifold and aligned over several of the orifices. As fluid, under pressure, enters the cavity in the stationary manifold, the fluid pressure opens the orifice valves and enters the rotary manifold. As the manifold rotates, orifices moving past the cavity close preventing the escape of fluid and subsequent orifices pass in front of the cavity allowing more fluid to enter the rotary manifold.

Abstract: This invention provides a process and apparatus for the wet attrition of ore. The process comprises grinding the ore to a pulp having a particle size distribution such that about 80% by weight of the particles have a diameter of from about 30 to about 0.4 mm; and agitating the pulp in a slightly turbulent medium. The apparatus comprises a vat having top and bottom covers with central openings and a gutter disposed along the exterior circumference of the top of the vat; a cylindrical shaft extending through the opening in the top cover; and a pair of impellers mounted at a distance apart on the shaft, the blades of the impellers being so arranged that the pulp is pumped towards the space defined between the two impellers.

Abstract: In a process and a device for manufacturing partially oxidized lead dust from lead pieces, the natural pile of dissociated coarse and fine material formed in a rotating drum is mechanically disturbed by radially extending guide plates in the interior of a drum which plates are arranged in pairs and displaced toward each other by 180.degree. in the direction of the circumference of the drum and the individual plates of each pair of plates are spaced axially apart, by which arrangement the efficiency of the process and the product quality are greatly improved.

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: An apparatus for the grinding of hard materials having a conveyor for forming a thin layer of material and moving the layer upward at an angle, and then causing the material in the upper region of the conveyor to tumble back down and along the surface of the upward moving layer, to generate a fine abraded product from the rubbing surfaces of the material.

Abstract: A rock and ore pulverizer or crusher device having a generally cylindrical elongate mortar defining a crushing chamber. The mortar is rockable or oscillable by means of a cradle which is driven through an eccentric drive apparatus. A generally cylindrical elongate pestle is secured within the mortar and independently retained therein by a flexible cable and swivel arrangement. The head end of the pestle is preferably tapered and provided with grooves to retain the material fed into the device. The entire device is installed at a desired inclination and material is introduced into a feed trough ahead of the pestle to be crushed as the material moves along the pestle and relative motion is imparted between.

Abstract: A particle grinder includes a container having at least one opening in a wall thereof; a sound isolation layer covers a major portion of the exterior surface of the container and an elogated fastening device passes through the opening, fastening the sound isolation layer to the container. The fastening device includes a bolt and a nut threadable onto the bolt. A first sleeve composed of substantially non-deformable material surrounds the elongated fastening device at least partially within a region of the opening, and a second and resilient sleeve surrounds the first sleeve, at least partially and normally projects exteriorly therebeyond. A clearance exists normally between the sleeves and the sound isolation layer abuts an exterior portion of the second sleeve. A resilient seal is disposed around the periphery of a portion of the fastening device, and between the first sleeve, and the container.

Abstract: A centrifugal crusher having a rotor-crusher and a cylindrical grate rotatably mounted about it, wherein the grate is made up from a plurality of bars which on both sides having cam-shaped configuration such that when the bars are assembled, the adjacently lying bars form with their mating cams polygonal or circular apertures which serve as the calibrating apertures for the grit. The bars on their inwardly facing surfaces are formed at a roof-shaped angle to facilitate the material handling capacity of the grate.

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: There is disclosed a self-attritioning pulverizer incorporating a cylindrical shell having a reduced-in-diameter, cylindrical sizing screen assembly telescoped concentrically thereinto and separated therefrom by an annular collection chamber. Mounted on the interior of such screen assembly are a plurality of equally spaced, axially extending radial holding baffles terminating at their radially inner sides in blunt edges cooperating together to form the radial interior of an annular holding chamber. A four bladed cruciform impeller is rotatably mounted from one end wall of such cylinder in coaxial relationship with such cylindrical shell with the radially outer extremities of such blades terminating in blunt edges spaced, as such impeller is rotated past such baffles, a radial distance from the edges of such baffles at least as great as the minimum cross-sectional dimension of unreduced chunks to be pulverized thereby.

Abstract: A tumbling apparatus for use in drum blast machines has a first endless belt defining a pocket for receiving workpieces to be tumbled and blast cleaned by abrasive projected at high speed against the workpieces. As the workpieces are tumbled by the belt, they fall onto a portion of the pocket called the cascade zone. A second endless belt is provided underneath the cascade zone of the pocket to give support to the first belt while preventing any anvil pinching of the first belt.

Abstract: A method of comminuting a mineral involves introducing into a grinding chamber which has an internal, rotatable impeller driven by an electric motor, water, a dispersing agent and pieces of said mineral not larger than 20 mm to form a slurry. The slurry is agitated in the grinding chamber and a slurry of comminuted minerals is continuously withdrawn from the grinding chamber. The rates of introducing the water, the dispersing agent and the pieces of mineral into the grinding chamber and the rate of withdrawing the slurry of comminuted mineral from the grinding chamber are such that the slurry of comminuted mineral withdrawn from the grinding chamber contains at least 50% by weight of solids. The volume of material in the grinding chamber is maintained substantially constant, and the power consumed by the electric motor driving the impeller is maintained between upper and lower limits.

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: Apparatus for disintegrating lumped materials into smaller particles. The apparatus makes provision for containing a vertical column of a lumped material to be disintegrated and which is held stationary and continuously replenished. A conical bowl rotatably driven receives a lowermost portion of the vertical column and rotates it. A zone is developed immediately above the rotated lower portion of the vertical column in which the lumps of the material impact each other and disintegrate each other.

Abstract: A method of dynamic disintegration of a lumped material by impact and chipping forces produced by kinetic energy imparted to the lumped material in a rotating rotor and expended on disintegrating it in an active zone over the rotor. A material disintegrating apparatus according to the disclosed method includes a hollow cylinder mounted concentrically about a shaft above the rotor and connected to a housing by vertical partitions dividing the working space of the housing into a series of adjoining chambers, the rotor is arranged with respect to these partitions so that a horizontal zone is defined therebetween for active disintegration of the material. Furthermore, the internal space of the rotor is made up of sections having each in the lower portion thereof an aperture for the supply of a carrier fluid into the zone of active disintegration of the material.

Abstract: An apparatus for breaking up and separating waste glass to obtain cullet comprising a grizzly made up of parallel bars arranged at a spacing smaller than the minimum width of projection of three-dimensional extraneous matter and auxiliary parallel bars disposed over one surface of the grizzly and arranged at right angles to the bars to form a lattice, the diagonal dimension of the openings of the lattice being smaller than the maximum width of projection of planar extraneous matter. The lattice is in the form of a rotatable drum with the grizzly positioned on the inner side of the its peripheral portion. The drum-shaped lattice has scraper plates attached to its inner periphery and an inlet for the waste glass and an outlet for the extraneous matter at its opposite ends respectively. The parallel bars can be arranged either annularly or axially with the auxiliary parallel bars being arranged oppositely.

Abstract: Waste glass containing three-dimensional extraneous matter to be removed is dropped onto a grizzly and is thereby broken up by gravity and separated into an undersize portion containing planar fragments of waste glass and of extraneous matter and an oversize portion containing three-dimensional large pieces of waste glass and unbreakable extraneous matter, the grizzly comprising parallel bars arranged at a spacing smaller than the minimum width of projection of the three-dimensional extraneous matter. The oversize portion is repeatedly subjected to the same procedure as above to break up the waste glass to an undersize material within a specified range of sizes and to remove the three-dimensional extraneous matter from the waste glass. A breaking and separating apparatus comprises grizzlies arranged in multi-stage fashion within a passage for dropping the waste glass or a rotatable drum-shaped grizzly having scraping plates.

Abstract: A novel ball mill providing a maximum efficiency for the balls dropping onto the material to be crushed, this being obtained by associating a vertical tube into which said material is poured together with the ball with means for raising the balls and crushed material passing out of the lower end of the tube, so as to reintroduce same into the upper end of the latter, the sufficiently crushed material being sucked out of the tube at a selected point of its height.

Abstract: An autogenous triturator mill for reducing particle size by colliding streams of particles in the center of a rotating bowl includes a bowl with radial vanes which is supported on a frame for rotation by a motor. Deflectors on the frame and located within the bowl intercept material centrifugally elevated in the bowl and direct the material inwardly in the form of a plurality of intersecting streams. Collision of particles in the intersecting streams reduces particle size. The concave sides of the bowl are provided with screens or foraminous walls to enable escape of fines of a pre-selected particle size from the bowl. The fines are fractioned off through the foraminous outlet as the particle size is reduced by repeated trituration or collision of the recirculating particles.

Abstract: A dental amalgam producing machine having a rotatable arm adapted to receive an amalgam mulling container at one end and having a counter weight at the other end, the arm being inclined with respect to the horizontal. A belt disposed about a non-rotating pulley is also looped about the container to hold the container on the arm against centrifugal force and to spin it on its own axis as the container is carried about the arm axis of rotation. Centrifugal force alone holds the cup on to the arm and no other mechanical locks or restraints are needed.

Abstract: In an apparatus for making organic fertilizer from waste organic materials by aerobic fermentation, the interior of an inclined slowly rotating digester cylinder is provided with a series of knives which gradually cut and shred the softer components of the raw material and a series of heavy chains located downstream from said knives, which said chains have overlapping loops which crush and grind hard and brittle components of the raw material, all while the material is in process of aerobic fermentation. Materials which resist the comminuting action of both the knives and chains are discharged with the digested organic materials and are then separated therefrom. The apparatus is capable of accepting and treating municipal garbage and refuse without prior separation of unwanted material, and without preliminary grinding of the material prior to its introduction into the digester.