Provided is a pulverizing apparatus (100) including a pulverization chamber (110) provided with a plurality of stationary blades (111) on an inner peripheral surface, a rotary shaft (120) rotatably supported by the pulverization chamber (110), a plurality of rotary plates (130) fixed to the rotary shaft (120) and separated with intervals in the horizontal direction, and having a plurality of a rotary blades (131) on an outer peripheral surface, tip ends of the rotary blades (131) having space of 0.3 to 0.5 mm between tip ends of the stationary blades (111), a paper powder feed port (140) to which paper powder is fed, a rotation driving unit (150) which rotates the rotary shaft (120) so that a peripheral speed of the tip ends of the rotary blades (131) is 19 to 30 m/sec, and a screen (160) arranged inside the pulverization chamber (110) having mesh openings of 130 to 400 m.

A screen and rotor assembly is provided having a rotor of cylindrical shape having a plurality of toolholders in a preselected spaced pattern about an outer surface of the rotor, cutting tools connected to the plurality of toolholders and a screen positioned adjacent the rotor in close tolerance to the cutting tools. The screen has a plurality of transverse extending screen segments defining a plurality of apertures therebetween wherein the apertures form rows in a circumferential direction about the rotor. The cutting tools are centered relative to one or more of the apertures in an axial direction of the rotor. A path of the cutting tools aligned with respect to a row of the apertures extending in a circumferential direction.

A bucket crusher has a box-shaped bucket body defining a loading compartment and an unloading opening, a crusher unit configured to crush sheet material and having a cylinder with a plurality of crusher teeth connected to a cylinder wall, each crusher tooth of the plurality of crusher teeth extending between a proximal end and a distal end. The plurality of crusher teeth has at least one high crusher tooth and at least one low crusher tooth. The distance between the cylinder wall and the distal end of the at least one high crusher tooth is greater than the distance between the cylinder wall and the distal end of the at least one low crusher tooth.

A system for shearing bulk material includes a shearing cartridge with an input port and an output port. A first plurality of rotatable blades are disposed about a first shaft, Each of the first plurality of rotatable blades includes a center aperture such that the first shaft extends through the center apertures of the first plurality of rotatable blades to selectively rotate each of the first plurality of rotatable blades simultaneously. A second plurality of rotatable blades is opposingly offset from the first plurality of rotatable blades. Each of the second plurality of rotatable blades includes a center aperture such that the second shaft extends through the center apertures of the second plurality of rotatable blades to selectively rotate each of the second plurality of rotatable blades in a direction opposite the first plurality of rotatable blades to shear and reduce the bulk material.

A splitter is provided for mounting on the leading face of a cutting assembly to be mounted on a brush cutter. In one embodiment, the splitter is preferably mounted below the cutting portion of the tooth such that as wood is cut, the cut wood is directed onto the splitter for further cutting. The tooth is mounted to cut tangentially with respect to the rotation of the cutter, while the splitter cuts radially and outwardly with respect to the rotation of the cutter. In this manner, a cutting mechanism is provided that is capable of cutting tangentially and radially simultaneously. The flow of cut wood is directed out of from the cutting assembly, thus facilitating the removal of the cutting debris away from the tooth holder and the cutting tooth, thereby cleaning the tooth of any debris and preventing wood and other debris from getting lodged within the cutting assembly.

A cutter assembly is presented for mounting to one or more hammers of a rotor assembly of a grinding machine. The cutter assembly includes a base, a tip and a fastener securing the base and the tip to the hammer. The base includes a key having side walls extending upwardly from a surface of the base and spatially oriented as sides of a pyramid that is truncated before reaching their apex. The tip includes a keyway having side walls extending inwardly from a lower surface into a body of the tip and spatially oriented as sides of a pyramid. The keyway mates with the key of the base. The tip includes at least one, and preferably two, cutting edges disposed on opposing ends of the tip. In one embodiment, the tip is reversibly mountable to the base such that the cutting edges may be selectively used within grinding operations. In one embodiment, at least a portion of side walls of the truncated pyramid key and keyway are curved in a plane parallel to the surface of the base.

A bite control ring assembly includes a depth control ring having a first end, a second end opposite the first end, and a gap disposed between the first and second ends; a tool holder having a capture joint and a tool holder interface opposite the capture joint, wherein the first end of the depth control ring is received within the capture joint; and a cutting tool having a cutting tool interface and a cutting surface disposed on a side of the cutting tool opposite the cutting tool interface, wherein the tool holder interface includes a V-shaped surface and the cutting tool interface includes a V-shaped surface that has a reciprocal shape to the tool holder interface such that the tool holder interface receives the cutting tool interface.

A slurry preparation tower is provided comprising an intake opening through which oil sand enters the slurry preparation tower; a first sizer device operative to comminute oil sand passing through the first sizer device to a first upper size threshold; a second sizer device operative to comminute oil sand passing through the second sizer device to a second upper size threshold, wherein the second upper size threshold is less than the first upper size threshold; a first solvent supply device for adding solvent to the oil sand prior to or during its comminution in the first sizer device; and a plurality of deflector plates positioned between the first sizer device and the second sizer device to assist in the mixing of the first comminuted oil sand and solvent.

A method and a device for grinding strand-like fibrous material, wherein the strand-like fibrous material is fed towards the cutting edge of a cutting mechanism and wherein a moveable striking mechanism for grinding the fibrous material cooperates with the cutting mechanism. Associated with the cutting mechanism is a moveable clamping mechanism, by means of which the fibrous material is clamped in an oscillating manner. To produce optimally uniform fibrous shreds, as defined by the position of the cutting edge, the fibrous material is guided through an oscillating clamping gap formed between the clamping mechanism and the cutting mechanism, wherein the clamping mechanism is guided in a back and forth clamping movement relative to the cutting mechanism. For this purpose, the clamping gap is formed by arranging the clamping mechanism and the cutting mechanism opposite one another in a clamping plane.

A shredding and haling apparatus provided includes a shredding assembly operatively connected to a baling assembly via a conveyor. A rotatable drum with cutting teeth spirally arranged along the drum is preferably centered within a lower portion of an intake hopper for cutting through material as it is fed into the hopper. Fixed cutting teeth are preferably arranged in a row or rows along each of the longitudinal sidewalls of the hopper, adjacent the cutting drum. A touch screen display and computer may be used in combination with sensors to monitor and control the shredding and baling operation, and a hydraulic system is used to drive the components. The shredding and baling assembly is preferably designed in an industrial size to handle high volumes of material and may be driven or transported from one location to another.