Abstract: Hydraulic transmission system for a mineral material processing plant, which transmission system comprises at least two hydraulic first motors, which are arranged to drive at least one conveyor belonging to the mineral material processing plant, at least two first directional valves connected via the first actuator channels of the directional valves to each of the first motors, a hydraulic pump arranged to transfer hydraulic fluid via the first actuator channels of the directional valves to the first motors. The system also comprises pressure sensors. The first directional valves are valves that can be adjusted by external control during the running of the processing plant and which are arranged to control the volume flow of the hydraulic fluid supplied into the first motors. The control is made on the basis of the pressure of hydraulic fluid measured by pressure sensors in the first actuator channels the directional valves.

Abstract: A screening element can be mounted at a discharge passage of a grinding mill chamber. The discharge passage is positioned in use to receive ground particles moving thereinto in a discharge direction. The screening element comprises one or more openings defined therein that are oriented such that ground particles pass therethrough in a direction that is oblique with respect to the discharge direction. The grinding mill chamber may form part of a centrifugal grinding mill.

Abstract: A screening element can be mounted at a discharge passage of a grinding mill chamber. The discharge passage is positioned in use to receive ground particles moving thereinto in a discharge direction. The screening element comprises one or more openings defined therein which are oriented such that ground particles pass therethrough in a direction that is oblique with respect to the discharge direction. The grinding mill chamber may form part of a centrifugal grinding mill.

Abstract: The invention relates to a vertical grinding mill comprising a closed vertical milling container in which a screw conveyor is arranged for rotary drive so as to convey grinding bodies to the top. The package of grinding bodies adjusts itself during operation such that the surface thereof is configured to slope radially outwards and downwards and to end in the region of the bottom edge of an outlet for grinding stock. Gas is introduced into the milling container above the package of grinding bodies. The gas and grinding stock are discharged from the milling container via the outlet for grinding stock.

Abstract: A dry particle supplying device for a particle-size measuring apparatus for providing an elementary dispersion of dry particle samples into an elementary particle state during the initial introduction of the dry particle sample into the measuring apparatus. The device comprising a feeder unit, a separation unit, and a retention device. The feeder unit vibrating due to a vibration force which allows the separation unit adjacent the retention device to pulverize samples in aggregated groups into an elementary particle state.

Abstract: For use in a basket mill having a process vessel in which particles are ground so as to reduce their size, a basket for retaining a grinding medium, having an opening in its top and a screen at its bottom. A first shaft extends into the basket and has a grinding assembly extending from the shaft. A first drive apparatus rotates the first shaft at a first rotational rate. A second shaft is coaxial with the first shaft and has an impeller for causing material to be ground to move into the basket through the opening and out of said basket through the screen. A second drive apparatus rotates the second shaft at a second rotational rate independent of the first rotational rate. The first shaft may be a tube. A tube may be disposed within the first shaft, and have at its end a bushing for receiving for rotation the second shaft. The bushing may be located outside of a region of the basket where grinding media is disposed. Methods for operating the apparatus.

Abstract: A pulper is used to comminute and suspend paper stock. The pulper includes a container that is open at the top and has a cylindrical side wall and a driven rotor, which is arranged eccentrically with respect to the center of the container. The bottom of the container can be provided with one or more truncated cones.

Abstract: A centrifugal impact crusher, having a housing, a rotor having a shaft journaled to the housing and a plurality of spaced apart slots in each side of the shaft, a plurality of hammers or cutters pivotally attached to one side of each slot by pins with the pins lying along two axes running parallel to the shaft, each of said hammers pivotal from a position proximate said shaft to a position in which it extends outwardly away from the shaft. A slotted table is located on another side of the rotor having spaced apart arms, the slots allowing the hammers to pass through without hitting the arms and an exit for allowing crushed material to escape from the housing.

Abstract: A machine for providing organic particles preferably substrate for use in manufacturing biogas, the machine comprising; an intake for input of moist and dry organic waste to the machine's interior chamber, where the organic waste may contain foreign bodies such as soft packaging, preferably plastics, netting and binding twine, as well as metal and glass, etc.; a rotating shaft located in the chamber and provided with at least one tool which is positioned at the circumference of the shaft, the tool/tools having a blunt shape; a stationary part mounted in the chamber, where the stationary part acts as the tool's counter-tool; an outlet for milled particles; an ejector for foreign bodies, the distance between the tool and the stationary part being of such a size that a milling effect is achieved on the waste's solid parts for grinding up into smaller pieces, while the extent of the distance prevents a grinding effect from being exerted on the waste's softer parts such as plastics.

Abstract: The present invention relates to the use of an agitator (10) positioned near the screen (4) of a hogger to increase turbulence in that region. The induced turbulence from the driven blades (15) of the agitator (10) reorients material contained within the hogger (1), thereby representing the material to the screen (4) and grinding disc (5) with potential improvements in both screening and comminuting efficiency.

Abstract: To provide a food chopper of simple design and high performance, a device (1) for chopping food, in particular pieces of ice, is proposed, said device (1) including a container (2) providing a bearing pin (20) on its bottom (21) and being divided into an upper processing zone (22) and a lower collecting zone (23), said processing zone (22) accommodating a chopping tool (3) for reducing the food, said chopping tool (3) being formed by a rotary cutting blade (30) and comprising a tool spindle (31), and in the transition region from the processing zone (22) to the collecting zone (23) there being at least partially a sieve (32) separating the processing zone (22) from the collecting zone (23), wherein the lower end (310) of the tool spindle (31) is rotatably mounted on the bearing pin (20). Preferably, a stirring tool (34) is part of the chopping tool (3) and is formed by a rotary stirring blade (340).

Abstract: A blender and juicer system involving a blender container, having an open top and an open bottom, and a removable juicer member being open at each end and adapted for insertion into the blender container. The blender container is adapted to prevent the over-insertion of the removable juicer member. The inserted juicer member is adapted to engage operatively the interior of the blender container. The blender and juicer system also involves a plunger adapted for insertion into the juicer member. The inserted plunger is utilized during a juice extraction operation. The plunger includes a top exterior lip that defines the optimal range of plunger insertion into the juicer member.

Abstract: Method for comminuting and cleaning waste plastic, in particular, mixed plastic (MKS) with the following steps: a compacted material, especially, an agglomerate is produced from film scraps or film remnants comminuted into flakes and/or thick-walled plastic parts chopped up into chips, the compacted material is introduced into a disc or drum refiner and is ground therein in the presence of water, wherein the portion of compacted material of the goods located in the refiner amounts to at least 10 percent by weight, a fine grain fraction is removed from the ground stock exiting from the refiner, the remaining ground stock is washed and either mechanically dewatered and dried, or pulverized again in a further refiner stage in the presence of water, and subsequently dewatered and dried.

Abstract: A process of mechanical separation of embryos from seeds for genetic transplantation employs counter-rotating cylinders together with one or more culling, hydration, separation, and viability testing steps to provide high-throughput of viable, transplantable tissue.

Abstract: A mobile slurry apparatus for creating a slurry from oil sand ore has a frame and a slurry box supported by the frame. Water is mixed with the ore to form a slurry that is retained in the slurry box. The frame base has a first set of spaced apart support points for supporting the frame in a stationary mode, and a second set of spaced apart support points for supporting the frame in a moving mode. The second set of spaced apart support points is closer together than the first set of support points and defines a lifting region disposed beneath a centre of gravity of the slurry apparatus in a moving mode when the slurry box is empty. Thus, a single moving device can be positioned beneath the second set of support points for lifting and moving the slurry apparatus.

Abstract: An adjustable screen apparatus for a material destruction device includes a first stationary fixed member and a second member positioned in an operatively juxtaposed and nesting relationship for reciprocal movement relative to the first member, each having a predetermined plurality of openings which are disposed in a predetermined pattern. A guide system is provided for guiding the reciprocal movement of the second member relative to the first member. A power operated drive is coupled to a source of power and to the second member for reciprocally moving the second member between a first position wherein each opening in the second member substantially overlaps a respective opening in the first member for producing large size particles and a second position wherein each opening in the second member partially overlaps each of a pair of adjacently disposed openings in the first member for producing small size particles.

Abstract: A tissue homogenizer. The tissue homogenizer comprises a first chamber, a pair of blades, a first filter and a second filter. The first chamber has a first opening and a second opening. The blades are disposed in the first chamber. The first filter is disposed in the first chamber between the first opening and the blades. The second filter is disposed in the first chamber between the second opening and the blades. A tissue piece is placed between the first filter and the second filter cut by the blade, and moved by a fluid through the second filter to generate homogenized tissue pieces.

Abstract: A briquette meeting required strength that is formed in an energy-saving manner from ferrous metal working scrap, such as grinding chips, and a method of making the briquette are provided. In a briquette formed by applying a pressing pressure to a ferrous metal working scrap, the percentage by weight of grinding chips is in the range of 10 wt % to 35 wt %. Viscous water-containing grinding chips crushed to a desired size and metal working scrap, such as gear cutting chips, are mixed in a feed hopper 7, and a pressing pressure is then applied to the raw mix by use of a compression pressing machine 8 to form a briquette B of ferrous metal working scrap. The content of a grinding fluid of the viscous water-containing grinding chips is 20 wt % to 60 wt %.

Abstract: A decladding device of spent nuclear fuel easily and efficiently removes fuel pins from the spent nuclear fuel. Spent nuclear fuel pins P, made of austenitic stainless steel, and in which the spent nuclear fuel is filled, are fed by a feeder 7 one by one or by a unit of several pins and finely sheared into fragments by a shredder 1 having plural rotating blades 4, 5 so that fragments are of a size of 1 to 2 mm or less. The sheared fragments are separated into a fuel pin portion and a nuclear fuel portion by a magnetic separator 20. The magnetic separator 20 comprises a vibration feeder 27 feeding the sheared fragments and is arranged below the shredder 1. Without using a dissolving liquid of nitric acid, decladding is done and the spent nuclear fuel can be efficiently obtained.

Abstract: A crusher for crushing cooked wood chips or the like finely. A raw material to be crushed such as the cooked wood chips is delivered into a housing and clamped between stationary blades attached to a stationary plate housed in the upper end of the housing and rotary blades attached to a rotary plate rotating in the housing, so that it is finely crushed by the stationary blades and the rotary blades by making use of the planer principle. The crushed products are carried in the air flow, which is generated around a guide vane disc, which rotates in a through hole formed in a substantially central portion of the stationary plate, and forcibly delivered from an exit in the housing side wall front portion inclined forward, to the outside of the housing.

Abstract: A pressure differential material transport system to transfer materials with an airflow to a sewer system. Embodiments of the pressure differential material transport system may be used for residential or industrial applications to dispose of materials to the sewer or to a comminutor to reduce the size of materials prior to disposal.

Abstract: An apparatus for vibratingly smashing sand masses, comprising a sand tank (30) elastically supported and having an inner tank (33) therein for holding sand masses; and vibrating means (21) having unbalanced weights for vibrating the sand tank, including the inner tank, by rotating the unbalanced weights, such that the vibrations of the sand tank draw a Lissajous's figure of approximately a circle. The inner tank (33) is defined by a wall (31) disposed in the sand tank apart from the inner surface (30A) of the sand tank (30), the wall (31) having a plurality of apertures (32).

Abstract: A fruit grating tool includes a tube-shaped housing, a cap releasably connected to the housing, a pressing member arranged under the cap and biased down by a spring, a rotary member having a knob arranged on top of the cap, and a grating base arranged under the pressing member and connected to the rotary member; the grating base has a grating surface on an upper side thereof, and many sharp edged tangential holes thereon; fruits are put on the grating base to be pressed against the grating surface by means of the pressing member, and are grated by means of the grating surface when the knob is operated to cause the grating base to rotate; the fruits will pass down via the sharp edged tangential holes of the grating base after having been grated into small pieces.

Abstract: The invention concerns a method and an equipment for combining in one single apparatus, the functions for filtering, decontaminating, and thickening paper pulp from used paper, while providing the complementary function of clarifying the filtrates. The apparatus (1) rotates at high speed. The paper pulp is introduced through the center of the apparatus (2) and driven at its angular speed. The pulp is then brought along a grate (6) with small size holes for separating the fibers from the greater part of the water. The thickened pulp is evacuated through extraction nozzles (8). The water is clarified in the clarification zone (12) and recycled or eliminated depending on uses. More complete embodiments of the apparatus include the functions of fractionating, de-inking and purifying the pulp with slots or holes.

Abstract: Various mechanisms for reducing food waste in a food waste disposer are disclosed. In each of the reduction mechanisms, structures are provided for shearing food waste as it passes through or past a rotating shredder plate of the disposer. In one embodiment, the reduction mechanism has a rotatable plate coupled to a rotational source and positioned for rotation relative to an inner wall of a stationary ring. The plate has a fixed lug attached to the rotatable plate and has a movable lug attached to the rotatable plate. In another embodiment, the reduction mechanism includes a rotatable plate coupled to a rotational source and a stationary plate disposed adjacent the rotatable plate. The stationary plate or impeller defines a plurality of apertures therethough. At least one first portion of the rotatable plate or impeller shears over at least some of the apertures in the stationary plate to shear the food waste.

Abstract: A carrier for an image developer for electrophotography, including core particles, and a coating layer covering each of the core particles, wherein the core particles have a weight average particle diameter of Dv which is 25-45 &mgr;m and a number average particle diameter of Dp which meets with the following condition: 1≦Dv/Dp≦1.3, wherein the core particles have such a particle size distribution that particles having a particle diameter of less than 44 &mgr;m is at least 70% by weight and particles having a particle diameter of less than 22 &mgr;m is not more than 7% by weight.

Abstract: A grate segment fastening system for an ore grinding machine, comprising a grate, including a top surface and a bottom surface opposite the top surface, wherein the top surface and the bottom surface are separated by a grate thickness, the grate being defined in use by an axis end, and a circumferential end opposite the axis side; wherein the grate is further defined by a second lateral surface, and a first lateral surface opposite the second lateral surface, the first lateral surface further comprising a raised mounting portion wherein at least one mounting bore extends into and through the body of the raised mounting portion, a plurality of throughput apertures extending through said grate from the top surface to the bottom surface and, a grate holder, including a top surface and a pulp lifter contact surface, opposite the top surface, the grate holder being defined by an axial end, and a circumferential end opposite the axial end, an anchor bore of predetermined transverse size extending from the top surfa

Abstract: A sewage cleaning and comminuting system is provided with a transverse semi-circular concave filtering screen that extends across an influent channel which intercepts all solids too large to pass therethrough. A combined screen cleaning and comminuting grinder unit is mounted in front of the screen in close relationship, having a concave surface for reciprocating motion therebetween along the full extent of the screen, so as to clean and remove large solids intercepted by the screen surface, and to subsequently comminute such larger solids as they are recirculated back into incoming flow of sewage, wherein the large solids can be ground into smaller solids by the grinder so that they can pass through the screen. A semi-circular screen in combination with a grinder is a preferred embodiment of the system. The system includes a single or multiple drive means whereby the comminuting grinder is actuated and provided with the reciprocating motion along the surface of the screen.

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: Size reduction machines including a screen holder that positions and secures a screen associated with the size reduction machine in place and also including an adjustable impeller for setting and changing a desired known gap between the size reduction machine impeller and frusto-conical screen.

Abstract: A process for separating particles of a cohesive form of a polydisperse compound or composition comprising nevirapine, nevirapine hemihydrate, mexiletine or mexiletine hydrochloride according to size is disclosed which comprises milling and sizing the particles in an apparatus which includes individual and/or nested sieves each of which may also include a quantity of beads, disks and/or other geometric or non-geometric shapes. The sieves can be rotated, vibrated or agitated in any and all combinations by various methods to achieve independently horizontal rotation and vertical reciprocation (similar to a merry-go-round) to efficiently segregate, size or mill cohesive and polydisperse powder particles to specific size ranges. The invention also contemplates a method for using the apparatus in the sizing and quantification of aggregated particles of cohesive disperse powders.

Abstract: The invention is directed to a device for chopping food, in particular ice cubes, which includes a container body (2) subdivided into an upper processing zone (20) and a lower collecting zone (21). The rotary chopping tool (3) received in the processing zone (20) serves to comminute the food materials. A sieve (4; 25; 26) is provided in the transition region from the processing zone (20) to the collecting zone (21). The device of the invention has the advantage of enabling both foodstuffs and ice cubes to be reduced to defined sizes readily. In addition, ice cubes may be reduced without major amounts of energy being absorbed by the chopping tool (3) and without the reduced parts beginning to melt.

Abstract: A pulper includes a rotor (5) mounted in a tube adjacent to a screening plate (4) having holes (4a). The rotor (5) includes helical vanes (5a) whose diameter decreases towards the outer end of the rotor. The rotor vanes (5a) carry in the vicinity of the screening plate a radially and outwardly projecting shoulder-like element (10) having a leading surface (10b) which is generally flat and inclined relative to the screening plate (4) at an angle of 55°-85°, and a trailing part having a reversed wing-profile shape as seen in the direction of rotation. The element forms a pressure-generating and subpressure-generating device which exerts an alternating effect on the pulp as the rotor rotates, therewith counteracting clogging of the holes (4a) in the screening plate. The shoulder-like element (10) may comprise a completely or partially separate element in relation to the rotor, and may be detachable therefrom and replaceable, and also optionally reversible.

Abstract: An improved wood pulverizer is provided with a rotating disc studded with a plurality of curved tapered hammers. One or more anvils is secured to the pulverizer with the anvil having teeth and slots located adjacent the surface of the disc. The hammers of the rotating disc pass through the slots of the anvils as the disc rotates to tear and shard wood into bits and pieces for subsequent use or processing. The anvils of the present invention are formed with two or more useable surfaces so that the anvils can be removed, rotated, and replaced to present fresh cutting surfaces to the disc. Further, the anvils are formed by a series of bolted together anvil segments to allow replacement of only single segments in the event of damage. Improved chip sizing grates are also provided with the grates having replaceable reversible gullet liners and grate rings formed by ring segments that together define a grate liner. Rotor rings are provided in some embodiments.

Abstract: A process for saline-solution soluble xanthan gum which comprises the steps of precipitating xanthan gum by mixing, with stirring, an aqueous solution of xanthan gum with an organic solvent which is a non-solvent to xanthan gum but is hydrophilic, removing liquid from the precipitated xanthan gum to a liquid content of at most 50%, disintegrating the cake of xanthan gum after the liquid removal to an average grain size of from 0.3 to 2 cm in diameter, and drying the disintegrated xanthan gum by fluidizing the same at a temperature not exceeding 80° C.

Abstract: A cylindrical chamber has a drive shaft rotatably mounted therein and extending along substantially the entire longitudinal extent thereof. This drive shaft is rotatably driven by a motor at a speed of 1,500-10,000 rpm. Solid particles to be comminuted which may be of coal, limestone/dolomite, cement or lime are fed into the chamber. Pressurized air is fed into the bottom of the chamber. Uplifting pressure for driving the gas and particles upwardly in the chamber may be provided by pressurized gas fed in through a tangential inlet in conjunction with a stationary velocity head. The upwardly driven particles are first driven through a plurality of short arm rotors which are driven by the shaft and provide a centrifugal force which comminutes the particles. The particles are then driven through a plurality of semi-permeable screens which are rotatably driven by the shaft and further comminute the particles. High apex flow enhancers are installed along the walls of the chamber to enhance the fluid flow.

Abstract: The present invention relates to a hydraulic assisted comminuting, vacuuming and loading system for debris and includes: a self propelled vehicle having a bed for either (i) feeding native material, commercial mulch and the like into the system, or (ii) receiving debris from the system after comminution has occurred in a in-line fashion; a frame trailerable attached to an end of the self propelled vehicle and including ground engaging wheels; a comminuting chamber attached to the frame at one end having a plurality of side walls upwardly depending from the frame, input and output openings, a hammermill having a shaft extending across the chamber, a first hydraulic motor assembly attached at one end of the shaft including input and output hoses and a first controller, a series of bifurcated hammers and a grate through which the comminuted material passes; an air fan chamber attached to the frame having an input opening connected to the output opening of the comminuting chamber, an output opening, a fan positio

Abstract: A blender includes a motor base having a heating seat, a blender seat, a strainer and a container having a cutter blade on the bottom and a cap on the top. In operation, the container is placed on the blender seat of the motor base. The soup or juice is put into the container through the cap and is blended using the blade. Then, the soup or juice is transferred into a heating container through a second filter. After boiling the soup or juice in the heating container, a delicious soup will be made.

Abstract: Milling/sizing apparatus which includes individual and/or nested sieves each of which may also include a quantity of beads, disks and/or other geometric or non-geometric shapes. The sieves can be rotated, vibrated or agitated in any and all combinations by various methods to achieve independently horizontal rotation and vertical reciprocation (similar to a merry-go-round) to efficiently segregate, size or mill cohesive and polydisperse powder particles to specific size ranges. The invention also contemplates a method for using the apparatus in the sizing and quantification of aggregated particles of cohesive disperse powders.

Abstract: Apparatus controllably breaks hollow spheres stored in an enclosure. A first screen is disposed within the enclosure on a screen support. The screen has holes that are no larger in mesh size than the smallest hollow spheres. The screen support provides support to the first screen and has void areas to allow debris from broken spheres to pass through. An impeller is in contact with the first screen such that movement of the impeller across the first screen breaks the hollow spheres in contact with the first screen.

Abstract: A comminuting and distribution device for recycling yard waste is provided. The device includes a mixing tank mounted on an upper surface of a movable support structure. The mixing tank includes a slurry preparation structure therein for creating a slurry from yard waste and fluid deposited within the mixing tank. A distribution structure draws the slurry from a mixing tank and distributes the same to a desired location outside the mixing tank for fertilizing a lawn, garden or the like.

Abstract: A comminuting chamber (24) and attachments therefor for comminuting solid material into a particulate form is disclosed. The chamber includes a rotatable sidewall (40), a bottom (41) disposed across an end of the sidewall, and a toothed disk (32) rotatably mounted within the chamber adjacent the bottom. At least one attachment (28) is secured to the bottom of the chamber and provides a variety of surfaces which engage and reorient material being comminuted in the chamber. The attachment may include a plate (30) that extends horizontally in a plane adjacent the bottom. An edge of the plate may further have a flange (80) that extends outward and downward toward the chamber bottom. The attachment may also include a rotary scrubber (38) having a hub (56) and a plurality of arms (58) extending radially outward from the hub. The scrubber is either rotatably mounted on the plate or on the chamber bottom.

Abstract: There is provide an improved pulverulent body processing apparatus that is substantially free from abrasion and cleavage of the pulverizing medium to allow prolonged continuous operation and also free from small pieces of the slit member and the pulverizing medium that can be produced as a result of such abrasion and cleavage and mixed with the material being pulverized and hence can efficiently operate to produce an evenly pulverized product.

Abstract: An infeed conveyor feeds seed cotton modules successively to a feeder head having disperser drums which reduce the modules to clumps of cotton. Incorporated into the conveyor are fluted rollers and beater rollers which cooperate to agitate the bottom portion of the modules and work the fibers on the bottom of each module so as to stretch and relax these fibers, thereby causing the sand, dirt, mud, trash and other debris accumulated along the bottom of the modules to be released. A conveyor feeds this debris to a hopper. Further, after the cotton modules have been dispersed into clumps of cotton by disperser drums in a feeder head and the clumps deposited in a clump chamber, a trough having a sieve means receives the clumps of cotton. In the trough, a conveyor disposed in the trough urges the clumps of cotton in a lateral direction toward an air separator box adjacent the feeder head.

Abstract: A device for use in a pulping process comprises first and second pulping units for processing feed material. A flow path connects the first pulping unit to the second pulping unit for transporting material between the units. The second pulping unit has devices for separating pulped material into a first material component comprising waste matter collected at the bottom of the second pulping unit, a second material component comprising sieved pulped material and third material component comprising unsieved pulped material. The second and third material component are separated from the first material component and are transported as a unitary flow to a primary space. Mixing and sieving devices are located in the primary space for separating the second material component from the first material component. The second material component comprises material which passes the sieving device and the third material component comprises material which does not pass the sieving device.

Abstract: An apparatus for converting unconsolidated medical waste into medical waste residue. A horizontal shaft supports revolving cutter blades having teeth which intermesh with teeth on stationary cutter blades. The rotating shaft forces the medical waste into contact with the cutting region between the revolving and stationary teeth to generate medical waste residue, and blades transport the medical waste residue toward a discharge. A first stage cutter can make an initial cut on the unconsolidated medical waste, and a second stage cutter can further reduce the particle size of the medical waste residue. A disinfectant or sterilant can be introduced into contact with the medical waste to convert infectious waste into nonhazardous medical waste residue.

Abstract: A pulper includes a pulping chamber, a pulping mechanism, and a non-pulpas collection chamber attached to a bottom of the pulping chamber below a top of the pulping mechanism in an annular area outside of the pulping mechanism. The collection chamber includes a container with openings at first and second ends; a basket having an opening at a first end and disposed inside the container wherein at least a bottom portion of the basket includes perforations; a pipe connection located at the second end of the container; means for removing the basket from the container; and means for preventing material from entering a space between the basket and the container; wherein the first end of the container is inserted into the pulping chamber. The collection chamber does not interfere with the fluid flow around the pulping mechanism and can collect a relatively large amount of non-pulpables without requiring pulper shutdown.

Abstract: A strainer for paper making capable of accomplishing maceration and screening of a paper feedstock with high efficiency and being simplified in structure and manufacturing. The strainer is arranged in proximity to a rotor and formed with a plurality of recesses on a surface thereof opposite to the rotor. Also, a screening apparatus for paper making which uses such a strainer is disclosed.

Abstract: A screen module for a size reduction machine has a rigid screen having a tapered apertured wall formed in a frusto-conical shape. The rigid screen has an open wide end and a flat end. The wide end is mountable within a channel of the size reduction machine at a predetermined distance from a complementarily shaped impeller. The module has a fine screen nested within the rigid screen and against the tapered apertured wall. The fine screen has a wide end and a narrow end corresponding to the apertured wall. An adaptor disc is releasably secured within the rigid screen at the flat end. The adaptor has a tapered outer perimeter for seating against the tapered apertured wall when the adaptor disc is secured within the rigid screen, clamping the narrow end of the fine screen therebetween. A clamp ring is releasably secured at the open wide end of the rigid screen.

Abstract: The comminution of solid materials, such as stumps and wood waste, into particulate form is accomplished by introducing the material to be comminuted into a tub. The tub is rotated to induce a circular motion to the material. Simultaneously, a disk positioned at the bottom of the tub is rotated, preferably in the opposite direction to the tub, in a plane parallel to the tub bottom. The disk has teeth thereon that impact the material in the tub. A screening means at the bottom of the tub is sized to keep the material in the tub until it reaches a desired particle size, at which time the particles can leave the tub through the screening means and enter a collection chamber. The particles are removed from the collection chamber by being entrained in an airstream that passes adjacent an opening in the collection chamber. Preferably, the teeth in the disk are individually replaceable and are symmetric so that once one side is worn the tooth can be reversed in its mount and used again.