Comminuted polysilicon with reduced contamination is prepared using multi-step comminution employing comminution with comminution tools of differing tungsten carbide content and/or grain size.

A nut lifting tool of an inner wear part of a cone crusher. The lifting tool has a frame to be placed around a nut to be lifted. The frame has nut lifting lugs for supporting occurring from at least three sides of the center of gravity of the nut and frame suspension brackets for suspending the frame from the nut before lifting the nut. The frame also has an open side for receiving a nut, lateral limiters, which, together with the lifting lugs and the suspension brackets, form a nut receiving space such that the frame can be slid from the open side to surround the nut, and lifting connection pieces for connecting a crane to the frame.

Embodiments provide a method for removably mounting at least one wiper ring to the underside of a cone head of a cone crusher. The method includes the following steps in the order recited: inducing a temperature difference between the cone head and the at least one wiper ring; mounting the at least one wiper ring to an underside of the cone head while maintaining the temperature difference; and holding the at least one wiper ring against the underside of the cone head while the temperature difference dissipates. The temperature difference may be induced by either cooling the at least one wiper ring or by heating the cone head, or both.

The present disclosure discloses a multi-gradient structure-reinforced cone crusher and a design method of a lining plate thereof. The multi-gradient structure-reinforced cone crusher includes a movable cone and a fixed cone arranged around the movable cone, and a crushing cavity formed in the radial space between the fixed cone and the movable cone, the surfaces of the fixed cone and the movable cone that are opposite to each other are respectively provided with a fixed cone lining plate and a movable cone lining plate, the working faces of the fixed cone lining plate and the movable cone lining plate that face the crushing cavity are provided with multiple sets of cast-in alloy, which are different in at least one of distribution density, maximum size of exposed surface and shape of the cast-in alloy in a direction from the feed port to the discharge port.

The embodiments of the present invention provide a crushing cavity structure for the technical field of crushing cavities of cone crushing equipment. The crushing cavity structure comprises: a first crushing cavity structure for through-crushing an input material having a first material characteristic, the first crushing cavity structure has a first crushing cavity and a first lining plate structure that match the first material characteristic, and the first crushing cavity and the first lining plate structure form a first-stage material crushing channel; a second crushing cavity structure for through-crushing a first-stage material having a second material characteristic, the first-stage material is obtained by the input material passing through the first-stage material crushing channel, the second crushing cavity structure has a second crushing cavity and a second lining plate structure that match the second material characteristic, and the second crushing cavity and the second lining plate structure form a second-stage material crushing channel.

A mantle is provided that is disposed over a cone head of a cone crusher, including an outer surface designed to cooperate with a crusher liner to crush rocks that enter a crushing zone between the outer surface of the mantle and the crusher liner. Also provided is a mantle nut and washer assembly for mounting the mantle to the cone head. The mantle includes a flange extending around an inner surface of the mantle between the inner surface of the mantle and the mantle nut and washer assembly to absorb heat generated when performing cutting operations to remove and replace the mantle.

Embodiments disclosed herein provide a cone crusher having a mantle and a rotating eccentric that causes the mantle to gyrate from side to side with respect to a stationary frame to which is mounted a crusher lining. The cone crusher may include a thrust bearing having a first bearing ring rotating with the eccentric and a second bearing ring mounted to the frame, the first and second bearing rings being disposed immediately adjacent and facing each other, one of the rings having a plurality of spaced oil feeds and a first and a second set of ramps on a surface facing the other ring. The first and second set of ramps extend upwardly from each of the oil feeds in opposite circumferential directions.

A bowl liner for use in a crusher that is comprised of a support cassette and a plurality of bowl liner sections mounted to the support cassette. Each of the bowl liner sections is mounted along an inner surface of the support cassette. Once the bowl liner sections are positioned along the inner surface of the support cassette, a plurality of support plates are used to support the bowl liner sections on the support cassette. An epoxy material can be utilized to further attach the plurality of bowl liner sections to the support cassette such that the bowl liner sections are held securely in place during use. The bowl liner can be replaced in the crusher as a single unit. After use, the bowl liner sections can be removed from the support cassette and the support cassette can be reused with another set of bowl liner sections.

An apparatus (2) and a method for attaching a cone-shaped crushing mantle (4) of a cone crusher (100) to a carrier cone (6) of the cone crusher (100) and for detaching the crushing mantle (4) from the carrier cone (6) are provided. The apparatus (2) comprises a hydraulically actuated pre-tensioning actuator (24) adapted for pressing the crushing mantle (4) against the carrier cone (6) in a pre-tensioning process in the axial direction prior to tightening attachment screws (18) in the head region (20) of the carrier cone (6). The hydraulic pre-tensioning actuator (24) comprises a pressure chamber (26) for receiving a pressurized hydraulic medium and a piston (28) limiting the pressure chamber (26). The hydraulic pre-tensioning actuator (24) is applied externally to a pressure plate (10) during the pre-tensioning process, such that a piston rod (36) of the piston (28) or a rod-shaped element attached thereto extends through the central opening (14) of the pressure plate (10) and is attached to the head region (20) of the carrier cone (6), wherein the pressure chamber (26) and the piston (28) of the hydraulic pre-tensioning actuator (24) are located on a side of the pressure plate (10) opposite to the carrier cone (6). The hydraulic pre-tensioning actuator (24) may be released and removed from the pressure plate (10) outside the pre-tensioning process.

The present disclosure relates to a crusher mantle lifting device. Attachment elements are configured to be attachable to a crusher mantle. Each attachment element includes a main portion having an inner surface facing the mantle and an outer surface. A locking portion projects from the inner surface and is configured to protrude into a corresponding opening in the mantle. One or more lifting portions project from the outer surface. A tightening means is configured to press the attachment elements towards the crusher mantle. The disclosure also relates to an arrangement and a method.