A process for separating carpet fibers from carpet backing uses a grinder of the type having a rotor with a plurality of vertically spaced cutter discs and a fan disc below the cutter discs. Sections of carpet are fed into the grinder which grinds the carpet, separating the fibers from the backing and breaking the backing into relatively small particles. The grinder is connected with a series of ginning equipment for removing the ground backing from the fibers.

A process for separating carpet fibers from carpet backing uses a grinder of the type having a rotor with a plurality of vertically spaced cutter discs and a fan disc below the cutter discs. Sections of carpet are fed into the grinder which grinds the carpet, separating the fibers from the backing and breaking the backing into relatively small particles. The grinder is connected with a series of ginning equipment for removing the ground backing from the fibers.

An anvil assembly for a vertical shaft impact rock crushing machine includes a plurality of anvils and anvil holders, each anvil holder including an anchor plate and a buttress wall, the anchor plate having dual tapered shoulders and the buttress wall extending perpendicularly from one side of the anchor plate. The rear face of each anvil includes dual vertically-mirroring docking ports each having dual, inwardly-oriented, angularly inclined side channels. In a mounted configuration the shoulders of each anchor plate are detachably captured in the side channels of one of the docking ports, thereby supporting each anvil on the anvil holder and securing it to the crushing machine.

A bearing cartridge and a retaining ring for a bearing cartridge arranged to support a rotatable main shaft of a vertical shaft impact (VSI) crusher. The retaining ring is formed as a single piece ring positionable radially between a drum forming part of a mainframe of the VSI crusher and a region of the main shaft of the crusher.

A rotor for a comminution apparatus that is arranged to launch material to be comminuted towards a surface, such as an anvil or an autogenous layer of crushed material. The rotor includes a frame including an upper plate, a lower plate and wall elements extending between the upper plate and the lower plate. The rotor further includes an inlet opening in the upper plate and an outlet located between the upper plate and the lower plate. An uppermost surface of the frame and a lowermost surface of the frame have a greater hardness than the rest of the frame such that additional wear protection elements may be omitted at those uppermost and lowermost surfaces.

A multistage hammer mill (10) has a plurality of milling stages arranged concentrically about each other. The plurality of milling stages arranged so that substantially all material in a first inner most of the milling stages passes through all subsequent adjacent milling stages. The milling stages include a first milling stage and a second milling stage. A central feed opening (12) enables material flow into a primary impact zone (14) of the first milling stage. The first milling stage has an impact mechanism (16) and a first screen arrangement (20a). The impact mechanism (16) rotates about a rotation axis (18). The first screen arrangement (20a) is disposed circumferentially about and radially spaced from the impact mechanism (16) and is provided with a plurality of apertures (22) through which impacted material of a first size range can pass. The second milling stage has a second arrangement (20b) disposed circumferentially about and radially spaced from the first screen arrangement (20a) and a circular array of impact elements (50a) disposed between the first screen arrangement (20a) and the second screen arrangement (20b).

A multistage hammer mill (10) has a plurality of milling stages arranged concentrically about each other. The plurality of milling stages arranged so that substantially all material in a first inner most of the milling stages passes through all subsequent adjacent milling stages. The milling stages include a first milling stage and a second milling stage. A central feed opening (12) enables material flow into a primary impact zone (14) of the first milling stage. The first milling stage has an impact mechanism (16) and a first screen arrangement (20a). The impact mechanism (16) rotates about a rotation axis (18). The first screen arrangement (20a) is disposed circumferentially about and radially spaced from the impact mechanism (16) and is provided with a plurality of apertures (22) through which impacted material of a first size range can pass. The second milling stage has a second arrangement (20b) disposed circumferentially about and radially spaced from the first screen arrangement (20a) and a circular array of impact elements (50a) disposed between the first screen arrangement (20a) and the second screen arrangement (20b).

A breaker liner attachment structure for a vertical shredder including a rotor, a cylindrical shell, and a breaker, includes: a void that has an opening on an upper side and formed in an area between breaker liners in the breaker; and bolt insertion holes formed to extend from inner walls of the void to side surfaces of the breaker. Bolts are inserted into the bolt insertion holes via attachment holes formed in the breaker liners. The bolts are fastened with nuts from a side of the inner walls of the void.

A breaker liner attachment structure for a vertical shredder including a rotor, a cylindrical shell, and a breaker, includes: a void that has an opening on an upper side and formed in an area between breaker liners in the breaker; and bolt insertion holes formed to extend from inner walls of the void to side surfaces of the breaker. Bolts are inserted into the bolt insertion holes via attachment holes formed in the breaker liners. The bolts are fastened with nuts from a side of the inner walls of the void.

An industrial powder making device having spiked hammer and blade arms. The device includes a powder making cylinder body, spiked hammer arms, a front oblique hammer, vertical hammers, a hammer arm, a detachable rack, a detachable rack inner bulge, spiked blade arms, a front oblique blade, high-hardness wear-resistant alloy sheets, a blade arm, a rotating shaft, a rotating shaft groove, a clamping piece, a feeding port, a discharging port, bearings, a rotating power module, a liquid nitrogen storage tank, a pipeline, a valve, nitrogen input holes, a nitrogen output hole, a fine particle collection device and a disc bevel discharging control device. An operating method is: crushing the ore by the spiked hammer arms, grinding the ore by the spiked blade arms, cooling with nitrogen, controlling equivalent input and output of the ore, and crushing and grinding the ore according to an established route, thereby realizing rapid powder making.