A material reduction system and processing tool for a material processing machine. The material reduction system comprises a tool holder fixedly mounted to a rotary drum. A leading member defines a raker surface oriented away from the operating direction at a first predefined angle. A processing tool is removably coupled to the tool holder. A leading face of the processing tool is oriented toward the operating direction at a second predefined angle. The first and second predefined angles are such that material is directed into contact with the reducing member to limit material contact with the tool body and the tool holder. An upper flange of the processing tool directly abuts the tool holder to direct material away from the tool holder. The upper flange and a lower flange define a tool recess configured to receive a projection from the tool holder to prevent rotation of the processing tool.

A horizontal grinding machine includes a frame, a feed hopper that receives material to be processed, and a feed conveyor that moves material to be processed in a processing direction. A grinding cylinder rotates about a generally horizontal grinding axis. A feed roller assembly is mounted on the frame at the rear end of the feed hopper and in front of the grinding cylinder. The feed roller assembly includes a feed roller that rotates about a generally horizontal axis in a first direction that urges the material towards the grinding cylinder and a second direction that urges the material away from the grinding cylinder. A controller is operatively connected to the feed roller and to the feed conveyor and controls the rotational speed of the feed roller and the speed of the feed conveyor to obtain a predetermined ratio of feed roller rotational speed to feed conveyor speed.

A material reducing machine includes a rotary reducing drum that is rotatable about an axis of rotation and defines a reducing boundary that extends at least partially around the axis of rotation. The material reducing machine includes an infeed conveyor for transporting material to a front portion of the rotary reducing drum and defines a conveyor plane. The material reducing machine includes a mill box at least partially surrounding the rotary reducing drum and including a mill box lid mounted generally above the rotary reducing drum. The mill box lid has an inlet edge positioned above a rear portion of the rotary reducing drum and an outlet edge positioned above the front portion of the rotary reducing drum. The mill box includes an infeed opening that is configured to receive material from a feed table and has an upper opening defined by the outlet edge of the mill box lid.

A mineral material processing plant and a method for controlling thereof. The processing plant includes at least one motor, at least one actuator, a control and adjusting system, a switch for switching the processing plant to a standby mode and an arrangement for keeping selected actuators in operation with a reduced standby speed. In the method, a command is given to the processing plant to switch to the standby mode and in response to the command to switch to the standby mode, feeding of mineral material to the processing plant is limited and speed of the motor or motors of the processing plant is reduced from the processing speed (Rf) to a reduced standby speed (Rsb) and it is ensured that selected actuators of the processing plant remain operating with a reduced speed.

A method for operating an aggregate material processing plant according to two alternative modes of operation. In a first operating mode, unprocessed aggregate material is deposited onto a crusher feed conveyor and then fed to a crusher. The crusher produces crushed aggregate material, which is conveyed by a collection conveyor to a vibratory screen assembly at a first speed. The vibratory screen assembly sizes aggregate material deposited onto an upper screen deck thereof. Unscreened aggregate material is conveyed by a transfer conveyor to the crusher feed conveyor. In a second operating mode, unprocessed aggregate material is deposited onto the vibratory screen assembly, which sizes the aggregate material. The transfer conveyor conveys unscreened aggregate material to the crusher feed conveyor. The crusher feed conveyor feeds aggregate material to the crusher, which produces crushed aggregate material. The collection conveyor conveys crushed aggregate material to the vibratory screen assembly at a second speed.

A mobile bulk material processing apparatus includes a main frame to support a material processing unit. A conveyor extends from the main frame and is mounted on a pivot joint to allow the conveyor to slew relative to the main frame, the pivot joint being positioned above the conveyor that is suspended below a region of the main frame.

A waste management system, primarily intended to be for waste floating in water, though it can also be used on land. A shredding device will reduce the size of the particles of waste. Ocean water is removed by a drying device. The dried waste material is cryogenically frozen using liquid nitrogen or other suitable means. The frozen waste material is then pulverized and ground into a powder. The powder may then be sprayed into a gas-filled chamber and heated. Temperature, pressure and humidity are maintained within the chamber for more than one minute. Microwave or other radiation and catalysts may be used to enhance the process of extraction. The processed material is then removed from the chamber. Carbon and water may be recycled. The carbon may be used as fuel by the ship. Water may also be used by the ship or returned to the ocean in a non-toxic condition.

The invention relates to a processing system, more particularly a stone crusher, with a filling unit (20), which can be filled with material to be crushed, wherein behind the filling unit (20) in the conveying direction or in the filling unit (20), a screening unit (30) is arranged, wherein the screening unit (30) can be vibrated by means of a vibration generator (38), wherein above the screening unit (30) a part of the supplied material is fed to a connected process unit, more particularly a crushing unit (40), and another part is separated out in the screening unit (30), and wherein the separated-out part of the material is fed by means of an adjustable flap of a conveying unit (70) in a bypass position optionally bypassing the connected process unit, more particularly the crushing unit (40), to a conveying device, more particularly a crusher discharge conveyor (60), or in a conveying position is conveyed out of the machine working area by means of a conveying device (50). To reliably and simply prevent the adjustable flap from becoming blocked by screen material, the invention proposes that the (lap is attached to the screening unit (30) in such a way that the vibration generator (38) excites it together with the screening unit (30).

A jaw crusher has frame side walls, a rear end connected to the side walls, an eccentric supported by the side walls, a pitman supported by the eccentric, a toggle plate connected between the pitman and a middle section of the rear end including a cross wall. The rear end has a rear end support connected to the cross wall and located on a center plane of the cross section of the rear end. An upper and lower rear cross beams are fixed to the side walls. The upper and lower rear cross beams each have a vertical wall and horizontal ribs connected to the vertical wall. A crushing plant is also disclosed with a body and the jaw crusher mounted on the body.

An articulable-arm-mountable pulverisation apparatus (10) is provided for reducing material size. The apparatus (10) includes a material-receiving housing (12) having a material-processing chamber (22a), a discharge outlet portion (22b), and a drive-unit compartment (22c). The apparatus (10) also has an articulable-arm mounting element (18) for releasably attaching the apparatus (10) to an articulable arm of an excavating machine. The apparatus (10) also includes a rotatable element (56) in the material-processing chamber (22a). The rotatable element (56) has a side surface which, together with an interior surface of the material-processing chamber (22a), forms a tapering pulverising material flow-path towards the discharge outlet portion (22b). A unitary drive unit (16) is provided in the drive-unit compartment (22c). The drive-unit compartment (22c) has an openable access cover (50), whereby the unitary drive unit (16) can be slidably removed in an axial direction as one-piece from the drive-unit compartment (22c) for utilisation of the unitary drive unit (16) in a different apparatus.