A system and method for freezing and breaking down tires or other materials is disclosed. The system and method for freezing and breaking down tires includes using a shredder to shred the tires, using a filter to screen the tire shreds, using a water sprayer to rinse the tire shreds, using a freezing tunnel to freeze the tire shreds before they are crushed into tire grains, using a magnet to remove any metallic fibers, filtering out any oversized tire grains for re-freezing and re-crushing, and using a separator to separate out any oversized or undersized pieces before bagging the final tire grains for re-use and recycling.

A sheet supply device, a shredding device, a web forming device, and a sheet recycling system enabling smoothly supplying sheets regardless of the size and type of the sheets, and reducing equipment size. The sheet supply device includes a tray having a support surface on which a sheet is placed; a supplier configured to feed the sheet placed on the support surface; and a discharger from which the sheet is discharged by operation of the supplier. The supplier has multiple rollers disposed separated in the feed direction of the sheet; a rotation driver configured to rotationally drive the multiple rollers; and a roller support supporting the rollers in a direction to and away from the support surface. The sheet placed on the support surface contacts at least one of the multiple rollers and is fed to the discharger by displacement of the roller support.

A portable grinding/shredding/chipping system with a drive track assembly which is manipulatable to facilitate altering the orientation of the portable grinding/shredding/chipping system. This arrangement results in improved loading and processing, of both long and short materials, as well as facilitates connection of a transport dolly and a transport truck/tractor without requiring any additional lifting mechanism. A pivotable housing provides greater access to the rotor and has an over-center arrangement which prevents the pivotable housing from inadvertently moving or pivoting back into engagement with the rotor. The portable grinding/shredding/chipping system is provided with a belt drive assembly which facilitates modification of the rotational speed of the rotor by merely replacing a sheave of the belt drive assembly. Lastly, both head and tail pulleys are driven by a respective motor so that a catinary of the discharge conveyor is radiussed which shortens an axial length of the system.

A hopper and a mineral material processing plant. The hopper includes hinged side walls configured to be pivoted into a first position and a second position and a connection wall attached between the hinged side walls. The connection wall includes a flexible member and is configured to fold together in response to the hinged side walls being pivoted from the first position to the second position.

A method for disposing of propellant containers containing a propellant, comprising submerging the propellant containers in a detonation suppressant liquid, shredding the propellant containers while submerged in the detonation suppressant liquid into shredded propellant container material reduced in size to provide release of the propellant from the propellant containers, and removing the shredded propellant container material from the detonation suppressant liquid. A system for disposing of propellant containers is also disclosed.

A mobile shredder for metal materials comprising a feeding device, a shredding mill with a plurality of hammers associated with a rotor, and a removal device and an actuating device are provided, wherein: the feeding device comprises a hopper and a shredder with a first toothed roller and a second toothed roller that rotates in the opposite direction to that of the first roller and at a greater speed. The actuating device comprises a single motor. A control system is also provided with a plurality of hydraulic pumps for moving the rollers and a hydraulic clutch with a variable flow for moving the rotor, the plurality of hydraulic pumps and the hydraulic clutch being joined to the motor. The control system is configured to modify the rotational speed of the toothed rollers based on the motor load associated with the shredding mill; and the devices are mounted on a frame.

An infeed system is provided for a chipper or grinder having a processing portion wherein an item is processed into smaller pieces. The infeed system is upstream of the processing portion and includes a feed roller, a first hydraulic motor in communication with the feed roller for selectively actuating the feed roller, a second hydraulic motor in communication with the feed roller for selectively actuating the feed roller, and a hydraulic pump for providing hydraulic fluid to the first and second motors. A directional control valve and a relational control valve are between the pump and the motors. The directional control valve allows the hydraulic fluid to operate the first and second motors in a forward direction and in a reverse direction, and the relational control valve allows the hydraulic fluid to operate the first and second motors in series and in parallel.

An infeed system of a chipper or grinder includes a feed roller, a motor for rotating the roller, a hydraulic cylinder for adjusting an amount of crush force applied by the roller, a sensor, and a controller in data communication with the sensor and the cylinder. In operation, the controller determines whether the material is being effectively moved to the processing portion and whether the amount of crush force is at a maximum or lowest setting. The controller causes the cylinder to: (a) decrease the amount of crush force when the material is being effectively moved to the processing portion and the amount of crush force applied is not at the lowest setting; and (b) increase the amount of crush force when the material is not being effectively moved to the processing portion and the amount of crush force is not at the maximum setting.

The present disclosure is generally related to an apparatus having cutter elements for destroying articles such as paper sheets and a mechanism for separating at least a sheet from a stack in a tray. A paper feed mechanism feeds paper that is separated from the stack by a stack separation mechanism to the cutter elements. The feed and separation mechanisms can be activated by rotation of the cutter elements. In one embodiment, the stack separation mechanism moves in an alternating manner between retracted and extended positions to disengage and engage and insert the stack to separate (with its edge) paper therefrom to feed to the feed mechanism for shredding. The paper stack separation mechanism can move in an non-undulating manner relative to the stack. A device for stripping stapled pages, a pivotable support plate, and pressure plate can also be used, as well as a number of sensors.

A drum-type wood chipper for processing wood includes a chipper drum that is adapted to rotate about a generally horizontal drum axis, a plurality of cutting blades that are disposed around the periphery of the chipper drum, and an engine that is adapted to rotate the chipper drum about the drum axis. The wood chipper also includes a feed system that is adapted to advance wood to be processed towards the chipper drum, and a controller that is operatively connected to the engine and adapted to determine an instantaneous engine operating rate during rotation of the chipper drum. The controller is also operatively connected to the feed system and adapted to control the rate of advance of wood towards the chipper drum. The controller is also adapted to modify the rate of advance of wood towards the chipper drum as the instantaneous engine operating rate changes while the chipper drum is being rotated.