Abstract: The subject invention involves the design and construction of a tubular cylinder for use with other components and in which the wall of the cylinder is of a composite character made into a unitary structure and provided with a multitude of substantially radial holes in its periphery and a predetermined amount of a cylindrical surface of the wall is preferably cut away to fully open the holes whereby to provide passages through which a material to be processed and under pressure in the cylinder can be forced or extruded outwardly through the passages and thereby condition the material for its intended use.

Abstract: In autogenous mills, lifters used on shell and end linings are so constructed with their teeth tilted toward the direction of rotation of the mill in such a way that teeth of lifters statistically coincide to the mean velocity of falling rocks relative to moving lifters.

Abstract: A method and arrangement for support of contact elements for material treating applications are disclosed in which a hardenable liquid bonding material is flowed into a space provided between surface areas of support and contact elements, the material being allowed to harden to provide a solid element which acts in compression to resiliently oppose relative movement of the elements. The space preferably has a cross-sectional configuration such that a wedging action is developed in response to relative movement of the elements. The holding element may be effectively burned out for removal and replacement of the contact element.

Abstract: The disclosure is directed to an improved liner assembly for an ore grinding mill. The liner assembly is of the segmented type, comprising a first plurality of holder segments which are mounted directly to the shell of the mill, and a second plurality of wear segments which are mounted to the shell in overlying relation to the holder segments, which are thus virtually unexposed to the ore comminution process and wear very slowly. The wear segments are formed with a plurality of downwardly projecting bosses which are received in similarly configured recesses formed within the holder segments. Mounting openings or bores are formed in the wear segments, extending from the top grinding surface to the center of each boss to receive a mounting bolt that extends through both segments and projects externally of the shell to receive a threaded lock nut. These mounting openings are countersunk so that the heads of the mounting bolts securing the wear segments are substantially recessed from the grinding surface.

Abstract: The disclosure is directed to an improved liner assembly for the cylindrical drum or shell of an ore grinding machine. The liner assembly comprises a plurality of holder segments each of which is formed with a longitudinal channel that is closed at the bottom and opens upwardly or toward the shell center. Each channel has longitudinal sides that converge toward the exposed or upper surface of the wear segment. Wear inserts of abrasion resistant material are inserted lengthwise into the channels, each having a cross section that conforms to the channel to be retained within it. The holder segments are mounted to the shell in axial rows with the inserts in end relation to present a continuous ridged wear surface over the entire axial length of the liner assembly.

Abstract: The disclosure is directed to an improved liner assembly for the drum or shell of an ore grinding machine, comprising a first plurality of liner segments mounted directly to the shell and a second plurality of segments each of which is secured to one of the first segments independently of the shell. In the claimed embodiment, each of the first segments defines a longitudinal, axially extending channel that opens toward the center of the shell and has opposed inner surfaces that converge toward the shell center. The first segments are secured to the shell by nut and bolt assemblies that extend through the segment from the bottom of the channel and through the shell. The second segments are constructed for lengthwise insertion into the channel, and each has converging sides conforming to the channel sides for retention therein, while at the same time protectively overlying the nut and bolt assemblies during the grinding process.

Abstract: The disclosure is directed to an improved liner assembly for an ore grinding mill. The liner assembly is of the segmented type, comprising a first plurality of segments which are mounted directly to the shell of the mill, and a second plurality of segments each of which is secured to an associated first segment independently of the shell. The first segments are formed from material which is resistant to impact, and the second segments are made from material which is highly resistant to abrasion. As constructed, the second segments can be replaced after a period of wear from inside the mill, avoiding the necessity of replacing the first liner segments which requires working teams both inside and outside the mill. In one embodiment, the second segments are L-shaped and are secured to the first segments by nut and bolt assemblies that are generally aligned with the shell surface to resist shear forces.

Abstract: A longitudinal metal liner element is provided for lining the interior peripheral wall of a grinding mill. The metal liner element is formed of a plurality of longitudinal segments having inclined end faces such that the segments are cooperably longitudinally arrangeable with the inclined end faces thereof in end-to-end overlapping relationship. The overlapping inclined end faces of the segments are configurated to diverge towards the interior of the mill such that when the segmented liner is secured to the inner peripheral wall of the grinding mill and is subjected to the working stresses of grinding media in the mill, the stresses applied to the metal liner result in the generation of a vertical lifting force at the overlapping end faces due to linear strain along the liner which aids in the subsequent removal of the segments for maintenance purposes.

Abstract: A tumbling mill such as a tube or ball mill, wherein an outer shell is provided with an interior liner made up of a series of rings surrounding and distributed along the axis of the shell and each defining and surrounding an interior hollow milling space which has the cross section of a star with rounded points, in a plane normal to the shell axis, with this space having sharp corners extending inwardly toward the shell axis and alternating with the rounded points.

Abstract: This invention relates to a tumbling mill which has a generally polygonal liner, which defines a grinding chamber. The cross-section of the grinding chamber is defined by liner plates and is generally polygonal and preferably approximately square. At the corners, the liner plates are directly supported on the inside surface of a shell which surrounds the liner. Elsewhere, the liner plates are supported on the inside surface by spacers. The liner plates extend along elliptic arcs on the inside of the shell.

Abstract: A liner assembly for the shell or drum of an ore grinding machine. The liner assembly comprises a plurality of liner segments each of which defines a mounting surface constructed for mounting engagement with the inner shell surface and a grinding surface for comminuting the ore. Each of the segments has longitudinal sides that taper from the grinding surface to the mounting surface. When mounted in side-by-side relation, adjacent liner segments define a pocket between opposed, tapered sides. A wedge-shaped insert is disposed within each pocket and loosely retained therein by the opposed tapered surfaces to reduce the amount of particulate matter entering the pocket and to protect the inner surface of the shell. In the preferred embodiment, the ends of each segment may likewise be tapered toward the mounting surface so that pockets are also defined by the opposed ends of adjacent liner segments, and inserts are also loosely retained in these pockets.

Abstract: A mill lining element is disclosed comprising a body of rubber having top and bottom surfaces and longitudinal side edges which extend in the direction of the axis of a mill shell. The body is reinforced by means of a metal plate covering the bottom surface and longitudinally extending metal bars attached to the metal plate adjacent the side edges thereof and extending through the body toward the top surface thereof.

Abstract: A centrifugal rock crusher having a cylindrical housing with a rotatively driven impeller disposed concentrically therein with a plurality of impeller vanes disposed uniformly around the impeller defining channels through which rock to be crushed is centrifugally thrown against a plurality of uniformly concentrically spaced anvils secured within the housing adjacent the impeller. The impeller is generally formed of a pair of vertically spaced upper and lower disc-shaped members which support the impeller vanes between them and together define the channels through which the rock to be crushed is thrown. Upper and lower wear plates are respectively secured to the upper and lower disc-shaped members and are angled downwardly to direct the trajectory of rocks thrown from the impeller generally horizontally against the anvils. The anvils are radially disposed in two concentric rows around the inside of the cylindrical housing with adjacent anvils being in different rows so as to present a staggered anvil pattern.

Abstract: In a material smashing machine, such as a breaking or crushing machine, a housing is provided with at least a portion of its wall lined by a stationary wearing wall against which, in use, the material to be broken or crushed is beaten, ground, or otherwise smashed. The wearing wall is formed, at least in part, by a number of replaceable wearing plates each of which has, on its face adjacent the housing wall, at least one cranked finger which penetrates through a slot in the housing wall and engages with its cranked end the outside of the housing wall to hold the wearing plate against the housing wall. The stability of this fixing can be increased by providing the facing end surfaces of adjacent wearing plates with inter-engaging means including at least one projection on one end surface fitting into a corresponding recess or recesses in the other end surface.

Abstract: A wear resistant lining for the inside wall of the bottom shell of a gyratory crusher which includes a plurality of flat plates made out of wear resistant steel plate and having a generally trapezoidal shape and each having a pair of spaced apart holes therein. The plates are placed on the inside of the bottom shell of a gyratory crusher adjacent to each other to encircle the inside of the bottom shell. The holes in each plate are fitted with universal fittings which permit alignment of fasteners which pass through into a hole in the bottom shell of the crusher to enable the wear resistant plates to be secured to the inside of the shell.

Abstract: In a mill drum provided with wear protective linings and ore lifting and carrying means in the form of longitudinal wings comprising an elastomeric material and extending radially inwardly from the lining of the mill drum an arrangement for securely attaching the wings to the walls of said mill drum, comprising at least two contiguous anchoring rods extending in the longitudinal direction of the bases of the wings through longitudinal holes made through the material of the wings, said anchoring rods passing through yoke means, which are recessed in the bases of the wings at a desired pitch or distribution along said bases and being connected to means for pressing the complete wing units against the drum of the mill and for retaining said wings in their mounted position.

Abstract: The disclosure is directed to a liner assembly for an autogenous ore grinding machine. The machine includes a large cylindrical drum which is rotated about a horizontal axis to comminute the ore. The liner assembly covers the inner cylindrical surface of the drum and consists of a plurality of longitudinal segments which are removably bolted to the drum. Each segment is made from a material which has good impact resistance and defines an irregular grinding surface to assist in the ore grinding process. An opening is formed through the segment body and extending longitudinally thereof, the opening being defined by walls that converge from the segment mounting surface to its grinding surface. A plurality of inserts, formed from material which is highly resistant to abrasion, are disposed in the opening and cooperate with the converging walls and each other in wedging relation for retainableengagement with the segment body bolted to the drum.

Abstract: In a hammer mill or crusher for use in size reduction or even pulverizing rock, metals, or other materials, a rotating crusher and a contiguous surface are confined between opposing side walls and an inlet and discharge for the mill, with each side wall having supports designed for accommodating the arcuate formation of the crushing surface; a series of reversible grate bars span the distance between the side walls and associate at each end a structural shoe designed for stably positioning of each bar into the formed surface. Each grate bar and its end shoes are contoured on their sides to provide for their mating with adjacent bars and shoes when arranged into the crusher surface.

Abstract: This is concerned with a liner segment which, when grouped with a plurality of like segments, is usable as a composite wearing element for lining the bowl in a cone crusher or the like. The liner segment may be considered to be generally upright, wider at the bottom than at the top, curvilinear between its sides so as to present a convex surface on one side and a concave surface on the other with integral mounting means projecting from the convex surface.

Abstract: A pulverizing device is disclosed wherein selected members of the device that are subjected to extreme wear conditions are provided protection from wear by, in some cases, forming the member of the hard wear resistant material and structurally attaching it in the machine or, in other cases, covering the member with a sheet of hard wear resistant material and structurally fastening said sheet in the machine.

Abstract: The subject invention involves providing a cast tubular cylindrical cutter head having wall structure provided with openings and inner cutting edges for use with an impeller adapted for rotation therein for directing a product against the edges for cutting the product into pieces for discharge outwardly through the openings, and surfaces or faces which extend outwardly to define the openings are disposed in a unique divergent relationship whereby to promote or facilitate the flow or discharge of the cut product therethrough.

Abstract: A roller mill-bowl lining comprising a plurality of individual segments disposed adjacent to each other in an annular ring-like arrangement. The segments of the ring have the adjacent end portions thereof configured in an angular, interlocking shape so that upon the breakage of one of the segments the lining will not lift away from the mill bowl.