Abstract: This invention relates generally to bulk demolition recycling systems and the like and more specifically to a bulk demolition recycling system which utilizes tanks of agitated and the control direction flow of water in combination with mesh baskets to provide the necessary separations.

Abstract: An air conveyor for moving heavy gauge waste film from film producing equipment to a waste disposal unit wherein the air conveyor reduces the effective width of the film as it is moved to the disposal unit.

Abstract: A process is provided for refining a pollutant laden suspension of waste paper using refining apparatus including a housing adapted to induce a turbulent flow in the suspension so as to separate the suspension into various fractions. Turbulent flow is created by the action of a rotary blade which is contained within a primarily rotation-symmetrical closed housing. The turbulent flow has a lower-pressure center about its axis. Along its radial edge, a fraction laden with heavy impurities or pollutants is removed while along the axial end where the rotary blade is positioned, a fraction of material is removed by a screen which is positioned next to the blade. Along the other axial end across from the end of the housing having the rotary blade, another fraction laden with pollutants is removed from the center. Air is fed directly into the refining apparatus where it is admixed with the suspension in order to facilitate separation of the suspension with the various fractions.

Abstract: A pellet feeder (A) feeds pellets of vulcanized rubber or other materials and water or another fluid at controlled rates into a mixing tank (30). An agitator (32) mixes the pellets and fluid into a slurry. The slurry is pumped from the mixing tank to a mill (C) by a pump (34). The mill has a receiving region (70) defined between a stator (48) and a rotor (68) for receiving the slurry. The stator and rotor define a peripheral grinding zone (72) around the slurry receiving region. An impeller (74) has vanes which extend from the upper surface of the rotor to an abrasive surface (82) of the stator such that the impeller vanes are ground at the same rate as the stator and rotor wear to maintain a fluid seal around the impeller blades. Fluid cylinders (50, 52) maintain a constant pressure between the stator and rotor. The stator has a plurality of recesses (86, 86') which preferably have downstream extending relief areas (214).

Abstract: A mineral breaker with a horizontally mounted driven accelerating rotor having a mineral inlet on the under surface thereof and with material to be processed being drawn into the rotor in a flow of air. The processed material is discharged also in a flow of air through a tube or tubes from the top of the rotor housing. Mineral pieces not sufficiently reduced in size may be recirculated through the rotor and additional material added for further processing. The size of processed particles is controlled by the airflow passing through the rotor.

Abstract: A system for the recovery of paper-making fiber from contaminated waste paper products including plastic film and other lightweight non-paper contaminants includes a novel rotary screening machine comprising a perforated drum rotatable about a generally horizontal axis and having openings at opposite ends for the delivery of liquid and paper furnished to the drum and the discharge of contaminants, respectively, a plurality of vanes for lifting material from the bottom of the drum to an upper region as the drum rotates, and a rotor mounted within the drum and having blades which are disposed in spaced relation to the drum vanes in a position to intercept material falling from the upper region of the drum and fling it back against the drum. The resulting fibers or flakes of useful paper are washed through the drum perforations while the rejected contaminants are conveyed to and removed via the discharge end of the drum.

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: In a process and apparatus for grinding and drying a solid fuel such as brown coal or lignite to form dust, in a fan type mill, in the presence of a hot drying gas with a low oxygen content, fine components of the fuel in dust form are separated out before the grinding step and dried. The remaining coarser portion of the fuel is introduced into the drying gas before the grinding step, in dependence on the grain size and moisture content of the fuel. The fuel is sifted or sieved before it is introduced into the mill and after the grinding operation, with the components which are not sufficiently fine then being recycled to the grinding operation, the recycled components being introduced into the circuit after the fresh fuel has been introduced.

Abstract: A novel comminution apparatus and method for comminuting a granular feed into a product having a predetermined particle size. The comminution apparatus includes a high-speed cutter member operating inside a screen enclosure having adjustable openings in the screen enclosure. A lever arm is used to adjust the relative openings between an inner screen and an outer screen of the screen enclosure with the size of the openings in the screen enclosure predetermining the particle size range passing therethrough. Rotation of the cutter member creates an air flow outwardly through the screen enclosure while an air recycle system directs the airflow across the outlet to a feed hopper to carry the particulate feed into contact with the cutter assembly.

Abstract: The invention concerns a pulp grinder in which feed devices force the wood against the grinder stone and in which there is an elevated level of water in the grinding zone. Sealing devices or plates extend between the walls of the wood-supply chutes or pusher chambers and the grinder stone to keep the water level high only in the grinding zone. The sealing plates are adjustable for controlling the liquid level in the grinding zone.

Abstract: A device for the simultaneous continuous feeding of pulverulent solids and of liquids into a treatment machine wherein the casing of the machine is provided with an orifice for feeding in liquids and solids. A feed branch extends upwardly from this orifice and leads into a ring passage. Positioned on the inner wall of the feed branch is an orifice for feeding liquids to the treatment machine and located in the center of the ring passage is a device for feeding solids to the treatment machine. The free cross-sectional size and shape of the orifice is adjustable and may be varied, in a simple manner, by modifications to the structures of the ring passage and orifices. In the cylindrical section of the feed branch several annular rows of bores, having differing diameters in each of the rows, form an orifice for the liquid feed. The bores within one row are arranged offset tangentially relatively to the direction of the adjacent bores in the other rows.

Abstract: A reducing mill for handling a wide variety of trash and waste material needing reduction to a state for easy subsequent handling and for separating certain components of the material by a specific gravity characteristic. The reducing mill embodies means for mixing and segregating components of the trash and waste material by the combined jet and negative pressure gradient induced by the action of an air stream, and by the cooperation of a hammer mill housed in a casing formed to effect recycling of material which needs or may require recirculation for further reduction and segregation.

Abstract: Apparatus for processing waste material which includes domestic and industrial waste, and in which the recovery of aluminum containers is an important aspect. The apparatus comprises a shredding mill and a housing structure to which the waste material is delivered in such manner that the difficult to shred heavy objects are allowed to separate by gravity action, and the remainder of the waste material is dispersed by an air stream such that the air responsive fractions are collected in a separator chamber and the remainder of the fractions are fed into the shredding mill under the control of gate means which responds to ability of the shredder to receive and process the same without overloading the motor drive.

Abstract: Liquid fertilizer is produced by mixing dry fertilizer components with water. The combination is introduced into a first cyclone separator which removes the larger chunks of material from the mixture and discharges them into a crusher containing a revolving paddle wheel. The smaller chunks and the solution are passed to a second cyclone separator where the smaller chunks are removed and passed to the same paddle wheel. The solution containing the dissolved material is passed on to a holding tank. The chucks which were passed to the paddle wheel are broken up by impact with the paddle wheel and the paddle wheel housing and thereafter fall through a discharge chute and become remixed with fluid from the holding tank or storage vat. The fluid and crushed particles are recirculated through the cyclones and crusher or impactor until all particles have become dissolved into the solution.

Abstract: The production rate of a conventional cryogenic grinding system incorporating an impact mill may be increased by (a) providing means to allow at least 70% of the embrittled material entering the mill to leave the mill before it passes the inlet; and (b) providing means to restrict the flow of the cold gas through the impact mill.The product leaving the impact mill is screened and any oversize is preferably recycled to the impact mill.

Abstract: An improved apparatus and method for manufacturing ground wood pulp from ligno-cellulose containing wood block material by forcing the block material to be ground against the end surface of a rotatably mounted grinding disc which has projecting grinding means in the shape of elevations or ridges located on the disc end surface which define grooves directed towards the end surface circumference. The apparatus includes a pressure plate for pressing the block material along a longitudinal side against the disc end surface with the fibers directed outwardly from the center of the grinding disc and toward the periphery of circumference of the disc while the fibers are separated. In this manner the fibers are oriented in the same direction as the edges of the elevations or ridges which carry the fibers radially outward and the elevation edges engage the block fibers under a movement component which is transverse to the longitudinal direction of the fibers.

Abstract: A machine for chopping polymers, and in particularly elastomeric materials such as tires, into uniform small size particles through the use of a rotating cutting head having teeth that have side cutting edges generally perpendicular to their outer end edges, which are parallel to the axis of rotation, and interfit with stationary teeth formed in complimentary shape. The cutting head is used in combination with a material infeed mechanism that maintains a steady, positive feed of material to reduce the elastomeric material into uniform small chunks that can be used for fuel, or otherwise more readily disposed than the present large size tires or similar articles.

Abstract: An improved comminuting rolling mill wherein a solid material such as mineralic loose or bulk materials are introduced into a gap between opposed parallel counter rotating comminuting rollers with the material being supplied by a delivery device above the rollers having a discharge slot extending the length of the gap between the rollers and being provided with means for accelerating the charging material to the speed of roller surface travel, with the delivery device having opposed porous walls and having means for supplying a flow of air through said walls for fluidizing the material so that fluidized material flows into the gap between rollers and the device being provided for pressurizing the delivery device so that the material is carried between the rollers at the desired speed.