Abstract: Disclosed is a horizontal media mill comprising a cantilevered shaft extending from a motor into a vessel in which rotor discs mounted on the shaft agitate the grinding media and the product being milled. A cup-shaped screen and a cup-shaped end cover fit over the free end of the rotor and are removably mounted on the end of the vessel. The screen retains the grinding media in the vessel while permitting the milled product to flow therethrough to an outlet in the end cover. The vessel is tiltable towards the screen end to facilitate cleaning and removal of the grinding media or screen elements. The stack of screen elements is radially positioned by ribs on the surrounding housing and axially clamped against lugs by an externally threaded nut. Also disclosed is a similar screen and outlet construction for a vertically oriented sand mill.

Abstract: An agitator shaft (22) is diposed in a milling body (12) which includes a grinding chamber (18) to be filled at least partly with grinding media (50) and material (52) to be ground and has an inlet for material to be ground and an outlet for crushed material. The agitator shaft (22) has an end portion (38) in which a cavity (40) is formed which is open at the inner shaft end. The end portion (38) comprises recesses (46) all around the cavity (40) to permit grinding media (50) to flow off which entered the cavity (40) through the inner shaft end. A separating means (42) is arranged inside the cavity (40) to permit finished pulverized material (52) to flow out of the grinding chamber (18) to the outlet (30) while it retains grinding media (50). In this manner the separating means (42) is effectively protected from any direct impact of activated grinding media (50). And yet the risk is avoided that the separating means (42) becomes clogged, by virtue of the rotation of the agitator shaft (22).

Abstract: A size reduction machine for reducing the particle size of material, comprises a frame, an arm pivotally connected intermediate its ends to the frame, a counter weight movably connected to one end of the arm, a motor having a drive shaft mounted on the other end of the arm, an impeller connected to the free end of the motor shaft, an enclosure carried by the frame below the motor, the enclosure having fenestrated side walls and an open top for receiving the motor shaft and impeller, the motor and impeller being bodily movable into and out of the enclosure upon pivotal movement of the arm, and an adjustable stop positioned between the frame and the arm for limiting the maximum travel of the impeller into the enclosure.

Abstract: A compact, portable pulverizing apparatus having a plurality of beater-bars (14) rotatably mounted to a plurality of support rods (16). The support rods (16) are eccentrically disposed about the periphery of two support disks (17). The support disks (17) are driven by a drive shaft (19) that connects to a power unit (13). The beater-bars (14) are supported about a sole plate (22) having an opening (23) disposed therethrough to allow the beater-bars (14) to contact the material to be pulverized. Handles (24) are connected to the sole plate (22) to allow it to be moved about as desired.

Abstract: An arrangement is provided for use in treating suspensions of waste paper in waste paper dressing plants. The arrangement includes a comminuting apparatus which includes a disintegrating rotor wheel which has a transport and disintegrating affect is provided in combination with a pulper device. The disintegrating rotor wheel is adapted to rotate in advance or otherwise in front of a sieve arranged perpendicular to the axis of rotation of the disintegrating rotor wheel and which divides the interior of the comminuting apparatus into a useful fraction compartment and a disintegrating compartment. A conduit tube is provided for connecting the pulper device to the comminuting apparatus and is connected to the pulper device at the bottom, side or center thereof. In this manner, only that portion of the suspension which includes the impurity contents is transported from the pulper device to the comminuting apparatus. The comminuting apparatus thus serves to remove accumulated impurities from the pulper device.

Abstract: In a hammer breaker for breaking and crushing scrap material, in which a hammer rotor having a plurality of hammers pivotally mounted thereon is rotatably mounted in a housing having an inlet for the material to be broken and crushed, a passage for receiving the broken and crushed material from the hammer rotor, and an outlet from the passage covered by a classifying grate, the passage is divided by a perforated baffle into a pair of chambers arranged in series in the direction of rotation of the rotor. The first chamber is provided with the classifying grate outlet, and the second chamber leads back to the material inlet so that air is able to circulate around the rotor via the perforated baffle and the second chamber, thus reducing the throughput of air of the machine and correspondingly reducing the size of the dust extractor which is needed.

Abstract: An apparatus (14) embodying heat exchange means for treating solid, granular and aggregate materials, and in particular for treating spent, i.e., used, chemically bonded foundry sand. The subject apparatus (14) includes a rotatable first chamber means (16) and a rotatable second chamber means (30). The used foundry sand is preheated while traveling from one end thereof to the other end thereof through the first and second chamber means (16, 30). From the second chamber means (30) the preheated used foundry sand is suitably conveyed to a thermal reclaimer means (12) for purposes of thermally removing organic matter therefrom. Thereafter, the used foundry sand is conveyed to a fluidizing chamber means (48) which is located in surrounding heat exchange relation to the first chamber means (16).

Abstract: The invention relates to an apparatus for granulating corn-cob mix and for conveying the granulate into a silo, transport truck or the like, including a mill comprising an integrated blower and a conveyor pipe joined tangentially to the blower. The mill is constituted by a beater mill that comprises a blower located behind a sieve within a circular casing and having a rotor arranged concentrically therein. A suction pipe is connected to the beater mill and comprises a secondary air opening adjustable in width, the suction pipe passing into a chamber supplied with the material which is to be milled from a reception container by means of a conveyor screw or other conveying means and the width of the suction pipe is greater by 35-70% than the width of the conveying pipe at the pressure-side of the blower. This enables the setting of the supply of material to be milled to the mill comprising a blower once, without having to undertake another governing operation.

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: A solids comminuter having a circular series of upright abrasive rolls with upper end drive defines a central chamber to receive solids to be comminuted. A centrally apertured stationary bottom plate supporting the rolls defines an orifice partially covered by a free-turning screening plate to define an annular passage adjustable in width to form a size restriction gap. Driven by the swirling mass of solids pressing down against it, the screening plate drives a particle impeller housed in a receiving chamber underlying the screening orifice to pump the descending comminuted particles outwardly through a discharge passage in the wall of the receiving chamber.

Abstract: A fiberizer contains a housing having a circumferential jacket in the form of a body of rotation at one end or end portion of which there is located a screen or sieve. At an end wall of the housing opposite the screen there are arranged guide elements which protrude into the internal chamber or compartment of the housing. Within the housing there is located a rotor having arms which are movable along the screen.

Abstract: The disclosure concerns apparatus for disintegrating waste paper and for sorting out fibers to be recovered from the suspension. There is a disintegrating chamber connected by a gravity feed discharge line to a drum type or vibration sorting device. A circulating member disposed in the disintegrating chamber rotates about an axis that is tilted at a small acute angle from the vertical. A screen located beneath the circulating member separates the disintegrating chamber from a discharge chamber beneath the screen. The screen sorts out coarser particles letting only finer suspension paticles pass into the discharge chamber. A first suspension discharge line communicates with the discharge chamber while a second suspension discharge line communicates with the disintegrating chamber immediately above the screen. Both discharge lines empty into each other and lead to the sorting device. Appropriate slides control flow through the two discharge lines.

Abstract: A pulverizer device for liquid handling systems which chops solid and semi-solid materials in the liquid to prevent plugging of and damage to pumps and other equipment in the system. The pulverizer device includes a housing having an inlet opening and a discharge opening and a screen disposed in the housing. A blade operates on the inlet side of the screen to chop material which initially will not pass through the screen. It is preferred that the blade be operated by a hydraulic motor, and that the housing have a sump with a clean-out on the side of the housing near the blade and screen for removing unpulverizable materials from the housing.

Abstract: A ball mill having a housing formed with at least one inner conically cross-sectioned annular wall, in which a displacement body having a conically cross-sectioned annular outer surface is mounted. The housing and displacement body are relatively rotatable and their conical surfaces spaced respectively from each other to define therebetween an annular gap having a conical cross-section for receipt and grinding of solids, liquid and grinding balls, relatively.

Abstract: A separator system for separating grinding bodies and ground material in an agitator mill wherein stationary and moveable or oscillating separator members in a grinding chamber define a variable gap which narrows when a moveable separator member moves against the flow of ground material.

Abstract: Waste paper containing materials, e.g. commercial "waste paper", are treated for recovery of reusable paper therefrom by slushing in a pulper from which two fractions are continuously extracted--a first fraction through small holes, e.g. 3/16 inch in diameter, and a second fraction through substantially larger holes, e.g. 1 inch in diameter. The second fraction is screened, preferably after a centrifugal cleaning operation, in a screen having small perforations sized to accept only substantially defibered paper, and the accepts flow is mixed directly with the first extracted fraction. The reject flow from this screen is conducted, with or without an intermediate deflaking operation, to a tailing screen from which the accepts are recycled to the pulper and the rejects are eliminated from the system.

Abstract: A continuous process of preparing low fat stabilized bone particularly suited for producing high quality gelatin from trimmed raw bone which is preferably crushed in a pre-hogger and fed continuously to preferably a screw type press mounted within a cage having a choke and perforations in the wall of the cage through which soft non-bone material is extruded. The pressed bone which is recovered separately from the soft non-bone material has a substantially reduced content of fat and meat tissue without heating while in contact with liquid fat. The pressed bone is heated in an oven dryer to a temperature up to 250.degree. F. (121.degree. C.) which crisps the fat and meat tissue adhering to the pieces of bone so that the crisp fat and meat tissue is readily separated from the bone during the heating, tumbling and screening thereof.

Abstract: An impact pulverizer mounts a rotor concentrically within an octagonal shaped reduction chamber. The rotor has a substantially solid core and generally radially extending impact blades, each of which slopes in the axial direction of the rotor. Upon rotation of the rotor, the blades strike pulverizable material and propel the same radially of the chamber and against the interior walls thereof. The slope of the blades moves the pieces longitudinally of the chamber from the intake toward the egress end in a generally spiral rotational motion as the pieces ricochet off the interior walls and back against the rotor blades, striking each other as they so progress. The striking and ricocheting cause the pieces to break up and be reduced in size as they travel towards an outfeed opening.

Abstract: Apparatus for processing ore by a combined milling, froth flotation and size classifying operation, wherein A milling chamber contains elastomeric milling bodies situated between first and second screens. The milling chamber is provided with an agitating means for vertical vibration of the milling bodies. A first outlet on the milling chamber removes froth. A second outlet below the first and lowermost screen removes the coarser components.

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: 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.

Abstract: An apparatus intended for carrying out various mechanico-chemical processes for production of borohydrides and comprises an airtight shell with three compartments. The top compartment serves as a material charging chamber, whereas the middle compartment accommodates grinding solids and a vibrator rod which passes through the charging chamber and is mechanically disengaged from the shell of the apparatus, the chamber with grinding solids being suspended on the vibrator rod. The bottom compartment serves for discharge of the disintegrated products therefrom. During operation of the apparatus, reciprocating motion is imparted to the vibrator rod along and around its own axis. This results in the grinding-solid chamber being set in motion so that the material fed from the charging chamber is vigorously disintegrated.

Abstract: An agitator mill for grinding suspensions having a grinding container with oblique and radial disks which may be hollow with a cooling fluid passing therethrough by means of the hollow connecting stirring shaft and the cycle for ground material containing said agitator mill.