The present disclosure relates to a method for use in installation of a mill liner, the method including (a) retaining a mounting bolt at least partially within a liner opening extending through the mill liner, (b) positioning the mill liner against a mill shell so that the retained mounting bolt is aligned with a mill shell opening extending through the mill shell, (c) selectively coupling an extraction tool to the mounting bolt, the coupling performed by an operator outside of the mill shell, (d) detaching the mounting bolt from the liner using the extraction tool; (e) pulling the mounting bolt through the mill shell opening so that at least a portion of the mounting bolt protrudes outside of the mill shell, and, (e) securing a fastener onto the mounting bolt to thereby attach the mill liner to the mill.

This disclosure relates to wear-resistant rubber compositions, such as those, for example, comprising at least one hydroxy-terminated polybutadiene, at least one natural rubber, at least one polymerization accelerant; at least one sulfur; and at least one polybutadiene, wherein the wear-resistant rubber composition may have an effective cross-linking density of at least about 3010.sup.5 moles/cm.sup.3.

A cutter includes a first end configured to engage an object along a dominant force vector, a second end opposite the first end, a first side, and a second side opposite the first side. The cutter further includes an outer side, an inner side, and an aperture extending from the outer side to the inner side along a fastener axis that is substantially perpendicular to the dominant force vector. The cutter also includes a cutter tip on the first end and having a first cutting edge, a second cutting edge, and a third cutting edge, the cutting edges defining therebetween a cutting face. The cutting face defines a cutting swath having a width between the first cutting edge and the second cutting edge as the cutter rotates with the apparatus. No portion of the first side or the second side extends outside the width of the cutting swath.

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 system for a vertical grinding mill. The system includes a longitudinally extending shaft supporting a helical screw flight and at least one adaptor plate configured to be fixedly mounted to the shaft. Each adaptor plate includes at least one first locking member. The system further includes at least one wear segment configured to be supported by the at least one first locking member. Further, a replacement kit, a kit of wear protection elements and a vertical grinding mill is provided.

The disclosure relates to a system for analyzing a wear surface in a material handling system. The system including a scanner and a processor configured to generate measurement data. The disclosure further comprises a corresponding method for utilizing the system for analyzing a wear surface.

A locking device for a crusher rotor of a horizontal shaft impact crusher includes a locking-wedge having a first through bore, a screw element for driving the locking-wedge into a locking position between a rotor arm and the hammer element and for holding the locking-wedge in the locking position, thereby fixing the hammer element to the rotor disc, a locking nut for receiving the locking screw element, and a locking nut holder. The screw element is at least partly located in the first through bore and extends through the locking nut. The locking nut holder holds the locking nut in a manner that prevents the locking nut from rotating as the screw element is driven through the locking nut.

A hammer tip for releasable integration with a hammer, used in a size reducing machine. The hammer tip is separated into a production block with a top working edge and a spacer block. The production block and spacer block utilize a saddle back attachment to the hammer. The production block is further supported with a lock ledge integration to the spacer block. The spacer block further includes a pair of wings extending outwardly from the left and right sides, and forwardly from the front side, of the spacer block to form additional cutting edges. The wings provide for additional sizing of the material being ground and help move (or push or carry) more material through the grates of the size reducing machine in the same amount of time as compared to spacer blocks without wings. This increased throughput improves efficiency of the size reducing machine.

A tool for processing abrasive materials, in particular rocks, sand or ores, may include a main tool body and a hard metal plate positioned on the main tool body. A build-up weld may be applied to a surface of the hard metal plate and to the main tool body to bond the hard metal plate to the main tool body. Further, a method for producing or treating such a tool may involve positioning the hard metal plate on the main tool body and applying a build-up weld to the hard metal plate and the main tool body such that the hard metal plate is attached to the main tool body.

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.