A shredder having a substantially tubular casing, which is closed upward by a cover and downward by a base. The shredder also includes a rotating shaft, which is internal and coaxial to the casing, with multiple supporting elements being keyed on the shaft, each element for supporting a number plurality of shredding elements.

The shredding elements have circular trajectories with a circumference that at least partially increases from the upper part toward the lower part of the shredder.

A crusher having a substantially tubular casing, closed in an upper region by a cover and in a lower region by a base. The crusher also includes a rotating shaft, which is internal and coaxial to the casing, with multiple supporting elements, each element for supporting a number of crushing elements, being keyed to the shaft.

The crushing elements have circular trajectories with a circumference that at least partially increases from the upper region toward the lower region of the crusher.

A crusher having a substantially tubular casing, closed in an upper region by a cover and in a lower region by a base. The crusher also includes a rotating shaft, which is internal and coaxial to the casing, with multiple supporting elements, each element for supporting a number of crushing elements, being keyed to the shaft.

The crushing elements have circular trajectories with a circumference that at least partially increases from the upper region toward the lower region of the crusher.

A method and related apparatus for liberating particles with specific dimensions from a moist Municipal Solid Waste Incinerator ash (MSWI ash) material comprising particles with differing dimensions. In an aspect, the method comprises feeding an amount of the material in a particle stream, striking the particle stream with a striking body to impart a sudden change in direction of the particle stream, receiving at least a part of the stricken particle stream on a moving surface, and transporting the received particle stream to an outlet beyond the receiving area where the particle stream is divided in a first fraction rich of particles of a first group of particle dimensions, and at least a second fraction rich of particles of a second group of particle dimensions, which second fraction is substantially depleted of particles of the first group of particle dimensions.

A method and related apparatus for liberating particles with specific dimensions from a moist Municipal Solid Waste Incinerator ash (MSWI ash) material comprising particles with differing dimensions. In an aspect, the method comprises feeding an amount of the material in a particle stream, striking the particle stream with a striking body to impart a sudden change in direction of the particle stream, receiving at least a part of the stricken particle stream on a moving surface, and transporting the received particle stream to an outlet beyond the receiving area where the particle stream is divided in a first fraction rich of particles of a first group of particle dimensions, and at least a second fraction rich of particles of a second group of particle dimensions, which second fraction is substantially depleted of particles of the first group of particle dimensions.

A mill includes a housing with a first end portion, a second end portion, and a lateral area disposed therebetween. The housing includes a raw material inlet, an air inlet, a recirculated material inlet, and a material outlet. An impeller is supported by the housing and includes a shaft disposed along the longitudinal axis of the housing, with a plurality of curved blades. A method for milling includes receiving a material of a first size range, introducing the material to an apparatus via a first inlet and introducing air into the apparatus via a second inlet. The method also includes agitating the material via an impeller, where the agitation reduces at least some of the material to a second size range by the time the material reaches an outlet of the apparatus. The processed material is delivered to subsequent processing operations.

A mill includes a housing with a first end portion, a second end portion, and a lateral area disposed therebetween. The housing includes a raw material inlet, an air inlet, a recirculated material inlet, and a material outlet. An impeller is supported by the housing and includes a shaft disposed along the longitudinal axis of the housing, with a plurality of curved blades. A method for milling includes receiving a material of a first size range, introducing the material to an apparatus via a first inlet and introducing air into the apparatus via a second inlet. The method also includes agitating the material via an impeller, where the agitation reduces at least some of the material to a second size range by the time the material reaches an outlet of the apparatus. The processed material is delivered to subsequent processing operations.

This disclosure relates to a striking tool for use in a high velocity, high impact energy comminution mill. The tool comprises an elongate body attachable at a first end to the comminution mill, and further comprises a wear resistant element for improving the wear resistance of the striking tool. The wear resistant element comprises a plurality of individual units.

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.

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.