A gyratory crusher topshell and topshell assembly including an outer crushing shell and optional intermediate spacer ring. The topshell has a radially inward facing surface that is divided into a plurality of regions including an upper and lower mount region axially separated by an intermediate annular rib. The rib enables the topshell to be compatible with a variety of different sized and shaped concaves optionally using an intermediate spacer ring without the need for a backing compound.

The disclosure relates to novel components of a gyratory crusher (1) which aim to promote self-alignment of a mainshaft assembly (2) upon introduction of the mainshaft assembly (2) into the gyratory crusher (1) by lowering the mainshaft assembly (2) from above the gyratory crusher (1) into the gyratory crusher (1). The novel components may include a dust bonnet (9) having a plurality of guides (15), an end plate (32) having a lower alignment chamfer (36), and/or a counterweight (13) having an alignment chamfer (41). Each of the novel components may be configured to bias a lower mainshaft (26) of the mainshaft assembly (2) of the gyratory crusher (1) into concentric alignment with a bore (56) of the eccentric (11) or eccentric liner (12).

A crusher having a protective liner, the protective liner including a plurality of lining segments which are arranged circumferentially along an a of the crusher. At least some of the segments have a trapezoidal shape with two bases of different lengths arranged parallel to the circumferential direction of the wall and two non-parallel legs connecting the bases. Further, at least some of the segments are arranged along the circumference of the wall such that long and short bases of adjacent segments alternate, and wherein at least some of the segments are allowed to vary in their axial position with respect to adjacent segments to compensate for tolerances in diameter of the wall of the crusher.

A gyratory crusher includes an inner and an outer crushing shell. The outer crushing shell has three regions along its axial length including: an inlet region that tapers radially inward from an uppermost first end; a crushing region that extends radially inward from a second lowermost end; and a radially innermost shoulder region that is positioned axially between the inlet and crushing regions. An angle of inclination of a radially inward facing surface at the inlet and shoulder regions and the axial length of the crushing surface are designed to optimise crushing capacity in addition maximising reduction.

A gyratory crusher shell has an annular wall extending around a longitudinal axis. A plurality of ears project radially outward from an annular rim of the topshell with each ear including a respective lug to sit within a corresponding recess at an annular rim of the topshell to rotatably lock the crushing shell at the topshell.

An example gyratory crusher for comminuting quarry material may comprise a crushing housing having a top and a bottom and a crushing cone having a top and a bottom. The crushing housing may be positioned around the crushing cone such that the crushing housing and the crushing cone form a circumferential crushing space having a crushing throat towards the top and a crushing gap towards the bottom. The crushing throat may be configured to receive quarry material, which, once comminuted, may exit the circumferential crushing space through the crushing gap. The circumferential crushing space may be tapered towards the crushing gap to facilitate this process. The crushing housing may include a crushing wall surface with an undulated surface disposed at least near the crushing throat. Waves of the undulated surface may include wave troughs and wave peaks and extend in a circumferential direction.

A gyratory crusher outer crushing shell and a crushing shell assembly. The crushing shell includes a radially inward facing crushing surface and a radially outward facing mount surface provided with radially outward projecting contact regions to contact the topshell or an intermediate spacer ring. A ledge or groove providing an abutment face is positioned at or axially above the upper contact region to positionally support a sealing ring for positioning between the crushing shell and the topshell or intermediate spacer ring.

A mantle for a gyratory or cone crusher that includes a frame having a bowl as a first crushing shell, and a crusher head including the mantle as a second crushing shell, wherein the mantle and bowl define a crushing gap between them. The mantle includes a central axis, a first end and a second end along the central axis, and an outer peripheral surface defined by a generatrix rotating around the central axis. The outer peripheral surface constituting a crushing surface of the mantle, and an outer diameter of the mantle being larger at the second end than at the first end. One or more grooves are formed in the crushing surface at the second end of the mantle, and one or more cavities for receiving wear resistant inserts are formed in the crushing surface. One or more wear resistant inserts are bonded to or into the crushing surface.

A wear-resistant body for crushing particulate material in the cement or mineral industries includes a body (1) provided with a plurality of highly wear-resistant inserts (3) embedded in complementary recesses (2) provided in the surface region (6) of the body. A ductile attachment part (4) is arranged within each recess (2), the ductile attachment part (4) being deformable by elastic or plastic deformation and the highly wear-resistant insert (3) being secured in the recess (2) by the ductile attachment part (4) after deformation. In some embodiments the ductile attachment part (4) is in the form of a ring or sleeve. A method for producing such a wear-resistant body is also provided.

A parabolic vibration-pulse mill for grinding material, which comprises a case with an outer cone and an inner cone arranged inside on a spherical support, with driving vibrator mounted on a shaft of said inner cone through a bearing, the cones being fitted with mantles having working surfaces forming a grinding chamber between them, wherein, in a lower section of the grinding chamber, working surface of each mantle being formed by parabola of generatrix with its concavity, in longitudinal cross-section, facing a mill longitudinal axis; and wherein, in a upper section of the grinding chamber, working surface of each mantle being formed by parabola of generatrix with its convexity, in longitudinal cross-section, facing a mill longitudinal axis, and wherein conjugation of said parabolas is smooth.

Moreover, the mill, wherein parabolas can be defined by the formula h=k.Math.r.sup.2/R, wherein h is the distance along an axis of the parabola, between a vertex of the parabola and circle formed by a cross section of the parabola, r is the radius of said circle, R is the radius of an sphere defined by the inner cone.

The mill with vertical distribution of material in the grinding chamber, providing a grinding ratio up to 30, with little wear of grinding mantles and low energy consumption.