Abstract: A stirring device for stirring a particulate material and a grinding media in a grinding mill includes one or more protective elements that extend outwardly from a body to deflect the particulate material and the grinding media from the body to minimize contact of the mixture of the particulate material and the grinding media against the body and to promote contact between the particulate material and the grinding media.

Abstract: A grinder assembly which minimizes deviations in the path of ground material as well as other interfering structure is provided. A receiving chamber is disposed above a grinding mechanism and provides for direct transfer of material to be ground from the outlet aperture of the receiving chamber to the grinding mechanism. The grinding mechanism is driven from above and, therefore, no other structure necessary which may interfere with the ejection of grounds from the grinder assembly. A vacuum-stabilized base plate may also be provided in order to securely and removably mount the grinder assembly to a surface.

Abstract: A discharging device for mills, comprising: a conduit (10), structured so as to be connected to a discharge opening (3) of a mill (1); a bend (11) disposed along the conduit (10), which defines a curve of the conduit (10); a regulating device (12) associated to the bend (11) and predisposed for varying the position of the bend (11) so as to vary at least a height thereof.

Abstract: The invention relates to a rotary tube mill and to a method of comminuting lumpy mill feed material, in which at least a first and a second grinding chamber as well as a co-rotating partition disposed between the grinding chambers are used. The material ground in the first grinding chamber is divided in the partition into first and second part-quantities of mill feed material, whereby at least a part of the second part-quantity of mill feed material proceeds into the second grinding chamber and at least the first part-quantity of the mill feed material is discharged separately from the tube mill.

Abstract: A dry type fine powder collecting system enables a crusher and triturator which process materials under dried condition, to efficiently collect the fine powder generated during processing. In addition, the same washing effect as is obtained in wet conditions is acquired without needing a large amount of equipment cost, the quality and processing efficiency of the product is improved, and the work environment is also improved. The fine powder collection system includes a plurality of air supply lines and a plurality of auction lines, one of each of which is provided to each of a plurality of processing spaces within the crusher or triturator. The air supply floats the fine powder generated during crushing or triturating by blowing vapor into each processing space, and a suction supply sucks the fine powder floated by the air supply from each processing space.

Abstract: A granulator for reducing the size of plastic particles to facilitate the removal of contaminants therefrom. The granulator includes an upper chamber and a lower chamber defined by an exit screen. The upper chamber includes a rotary shear and an air handling system for creating a pressure drop across the screen to facilitate the transit of particulate material therethrough.

Abstract: A drilling fluid homogenizer and method of homogenizing drilling fluid which produce a non-clogging homogenized drilling fluid at a high throughput, in an open-loop process. The non-clogging homogenized drilling fluid is capable of being created at high rate so that the non-clogging homogenized drilling fluid is available on demand to eliminate halting of drilling operations. The drilling fluid homogenizer is coupled in series with the closed-loop designed drilling fluid system and is adapted to homogenize water-based drilling fluid and other drilling fluid types, such as, synthetic drilling fluid during drilling operations on demand.

Abstract: A pulper device includes a vessel in which an annular flow can be generated. The flow acts upon a liquid-sold mixture located inside the vessel and effects a pulping of the same. The device also comprises a screening device for separating coarse materials from the suspension, whereby the screening device has the shape of a truncated cone. The truncated cone is provided with holes on the lateral surface thereof and can be mounted on the base of the vessel in such a way that the truncated cone points upward with the small circular surface thereof, and the lateral surface lies in an approximately tangential manner to the toroidal flow. The screening device is subdivided into different segments and these segments can be individually mounted from the external side of the vessel.

Abstract: A wastepaper treatment method and system which combines the pulping and sorting in a pulping drum (10) with a following wet-strength processing, performed with high mechanical intensity, e.g., in a pulper (20). With the easily pulping paper materials being separated already from the drum (10) in a fines fraction (3), particular advantages result in terms of quality and economy.

Abstract: A device for holding the grates or backside plates of a partition in a tube mill, the partition being made of a frame that is flame cut or cast, in steel or iron. The frame is provided with anchor holes. The holding device is made of a perforated plate held on the partition frame, and is perpendicular to the mill axis, the perforated plate being provided with anchor holes for the grates or backside plates, the holes being, for a given diameter, always identically positioned so that for the given diameter, the same grates or backside plates are always used irrespective of the shape of the partition frame.

Abstract: The present invention is a novel concrete reclaimer cylinder with a closed chamber and a screen chamber. The reclaimer is disposed in a non-horizontal position such that screen chamber is positioned lower than the closed chamber and driven to rotate. Concrete product is received into the closed chamber at its receiving end and is washed with water to produce cement slurry. The cement slurry flows out of the closed chamber at the receiving end leaving a mixture of sand and gravel in the closed chamber. The sand and gravel mixture is advanced through the closed chamber by eight triangular blades. Each blade is planar in shape, with a screen portion disposed within each blade face, with a perpendicular portion extending from the front edge to direct the sand and gravel mixture through an aperture and into the screen chamber. The sand and gravel mixture is received in a rotating screen and washed by high pressure spray to separate the two constituents.

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 present invention is a novel concrete reclaimer cylinder with a closed chamber and a screen chamber. The reclaimer is disposed in a non-horizontal position such that screen chamber is positioned lower than the closed chamber and driven to rotate. Concrete product is received into the closed chamber at its receiving end and is washed with water to produce cement slurry. The cement slurry is floated out of the closed chamber at the receiving end leaving a mixture of sand and gravel in the closed chamber. The sand and gravel mixture is advanced through the closed chamber by four triangular blades. Each blade is planar in shape, with a perpendicular portion extending from the front edge to direct the sand and gravel mixture through an aperture and into the screen chamber. The sand and gravel mixture is received in a rotating screen and washed by high pressure spray to separate the two constituents. The sand permeates the rotating screen while the gravel remains inside the rotating screen.

Abstract: A partition diaphragm which divides a grinding chamber of a ball mill into several chambers is formed into a compound structure comprising a primary screen plate and a secondary screen plate, with the slit clearance of the secondary screen plate being smaller than that of the prior art while avoiding the occurrence of blinding. The secondary screen plate of the partition diaphragm is comprised of a wire sieve provided with fine slits having a trapezoidal shape in section. The wire seive is loosely disposed between adjacent members so as to be freely movable to a certain extent. Since there is no sticking of material by movement of the wire sieve in spite of the slit clearance in the wire sieve, fine particles in the partition diaphragm can move smoothly and the two grinding chambers are well-balanced, resulting in an improved grinding efficiency.

Abstract: A concrete reclaimer includes a concrete processor having a rotating inclined screen and a pipe discharging water. Fresh concrete being disposed is poured into an open end of the rotating screen, and migrates toward the opposite open end. The concrete passes over a fine mesh and then a coarse mesh screen, washing out cement slurry when passing over the former, and removing sand when passing over the latter. Gravel is discharged from the remaining screen open end. Specially configured nozzles are arranged in a particular pattern along the pipe. Collection and storage pits are provided for the resultant segregated cement slurry, sand, and gravel. In a preferred embodiment, a concrete processor includes a five horsepower pump and a ten horsepower screen rotation motor.

Abstract: Flow rate of material passing through a partition diaphragm of a ball mill is regulated. One end of a disc controller is mounted on an outer shell of the ball mill, and a control disc is mounted on the other end through a diaphragm chamber formed inside the partition diaphragm. The disc controller performs an opening and closing operation of a discharge opening by moving to and from a center core A disk adjust bar 41, a universal joint 45 and a disc holder bar 50 are connected in such a manner as to be separately bendable with respect to each other. The opening and closing operation performed by the control disc is not affected by deformation of the outer shell of the ball mill or any positional change during operation.

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: A continuous micronizing mill for granular material consisting of a rotary drum with a high length/diameter ratio, divided by separator baffles into several grinding chambers in which grinding loads having a progressively decreasing body size are placed and in which the ratios of granular material to grinding load are different.

Abstract: The invention relates to a tube mill partition as the discharge or transfer wall. With a view to an improved air passage and a simple material flow regulation, in the case of this partition a substantially tubular central part is used, in that a rotary and/or wholly or segmentally axially displaceable adjusting ring regulates the material flow.

Abstract: The invention relates to a tube mill partition as a transfer or discharge partition. With a view to reducing wear and facilitating maintenance, separate wearing beams are used and the latter or the slotted plates can be easily replaced without any further assembly opening.

Abstract: A ball tube mill has a housing with an inlet and an outlet for material to be comminuted accommodates annular wall plates spaced at a predetermined distance from each other, arranged at an angle to the longitudinal axis of the housing, and having the form of an ellipse. The space between the adjacent annular wall plates is somewhat greater than D/tan .alpha., where D is the inside diameter of the housing, and .alpha. is the inclination angle of the annular wall plate to the longitudinal axis of the housing.

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 coal-water slurry producing system comprises: a continuous wet-type ball mill for grinding the coal with the addition of water and additives thereto to obtain coal-water slurry, supplying device for supplying the coal-water slurry discharged from the ball mill to a filtering apparatus, for filtering the supplied coal-water slurry to remove coal particles of a predetermined particle size or above, delivery device for delivering the filtered coal-water slurry containing coal particles of the predetermined particle size or below to a slurry storage tank, and a combustion apparatus. The coal-water slurry producing system further comprises a screen apparatus disposed at an exit of the ball mill to remove coarse coal particles contained in the coal-water slurry, and recovery device for recovering the removed coarse coal particles at an entrance of the ball mill.

Abstract: A process for producing a coal-water slurry having a high coal concentration (generally 60 to 80% by weight or more) and a lower viscosity, at a lower cost and with a smaller amount of dispersing agent added is provided, which process is directed to a process for producing a high concentration coal-water slurry by feeding coal, water and a dispersing agent into a wet, continuous ball mill and wet-milling them, characterized by feeding the dispersing agent in a multi-stage manner along the milling direction of coal within the ball mill.

Abstract: A rotary drum screen which exhibits baffles with impact plates extending in the direction of the periphery and a diameter which makes it possible to break up the refuse beforehand through free fall. The upper edge of the impact plates can have a saw tooth contour and the cross section of the drum casing is a polygon, preferably an octagon. The rotary drum screen rotates at a rotational speed such that the centrifugal acceleration at the drum casing is preferably 50-70% of acceleration due to gravity.

Abstract: A division head for a tubular grinding mill for controlling the level of material being ground in the upstream compartment of the mill. The division head is formed by a plurality of hollow pie shaped segments covered on the upstream side by grates which permit material to flow into the division head and liners and on the downstream side. A partition divides the pie shaped segments into radially inward sections and a radially outward section. Material within the radially inward sections flows out of the division head into a downstream compartment of the mill through a central discharge cone. Some of the radially outward sections are flow connected directly to the radially inward sections through an opening in the partition dividing the pie shaped segments. Dampers are provided for controlling flow of material through the opening connecting radially outward sections with radially inward sections.

Abstract: The invention relates to a method of and apparatus for dry grinding a granular material in a grinding tube mill (1) having a final grinding compartment (2) and one or more preceding grinding compartments (3) containing grinding bodies. The material, after having passed through the preceding compartment or compartments (3), is discharged through openings (6) in the mill (1) and is divided into a fine and a coarse fraction in a separator (9). The coarse fraction is returned to the preceding compartment or compartments (3), and the fine fraction is fed to the final compartment (2). The ground material is discharged by flowing over a dam ring (12) from the final compartment (2). Any grinding bodies carried with the overflow are separated by a sieving diaphragm (13) from the material and returned to the final compartment (2). The invention also relates to the granular material ground according to the method of the invention.

Abstract: A material grinding tube mill having a composite diaphragm (5) at the outlet end of a grinding chamber (3). The diaphragm comprises a coarse grate (6) facing the grinding chamber (3) for retaining grinding bodies in the chamber (3), and, on the side of the grate (6) remote from the chamber, a sieving screen (7) for sieving the ground product. The coarse grate has a plurality of openings (20) which constitute substantially the effective open area of the coarse grate. Disposed within the space defined between the coarse grate (6) and the sieving screen (7) are guiding members (21, 22) to guide coarse particles backwards to the grinding chamber (3) through one or more apertures (19) in the coarse grate (6) which allows free passage of the coarse particles.

Abstract: A wood chip rechipping method and apparatus are provided wherein a slotted, cylindrical drum rotates about a concentrically mounted rotatable anvil rotor having a plurality of arms, each of which has a blade at its outer extremity. The drum and anvil rotor arms rotate in the same direction, but at different speeds. The rotating apparatus induces centrifugal force on the wood chips to position them against the inner periphery of the drum where the blades on the relatively faster rotating anvil arms shear off a chip slice having a predetermined thickness. This shearing action continues until each chip has been rechipped into slices capable of passing through one of the drum knife slots and into the discharge outlet.

Abstract: A tube mill is disclosed for drying and grinding moist material which comprises at least one compartment for drying moist material and at least one compartment communicating with the drying compartment for grinding the material. A separating chamber is positioned between the adjacent communicating drying and grinding compartments with means being provided for introducing hot gases and material to the drying compartment so that the material may pass to the separating chamber and the grinding compartment.

Abstract: Method and apparatus for reclaiming sand from foundry molds and forms. A drum is mounted in a frame for rotation about its longitudinal axis. The frame is hinged at its rearward end so that the longitudinal axis of the drum may be adjustably inclinedfrom the horizontal. The drum is provided with first and second breaking zones for reducing large pieces of material in the drum as the drum rotates. The first breaking zone contains longitudinal rib members and spikes attached thereto while the second breaking zone contains longitudinal rib members only. A perforate partition separates the first and second breaking zones and prevents the movement of material from the first breaking zone to the second breaking zone until it has been sufficiently reduced. There is also provided a grinding zone for further reducing particles having a predetermined maximum size by means of grinding balls.