Abstract: An insert for covering one or more selected surfaces of a discharge end assembly including a discharge end wall of a mill shell partially defined by an outer perimeter wall thereof and a number of pulp lifters mounted on the discharge end wall. The insert is formed to cover the selected surfaces to mitigate wear to which the selected surfaces are subjected when the insert is located in a predetermined position relative to the selected surfaces.

Abstract: A discharge grate assembly for at least partially guiding slurry from a mill shell chamber toward a discharge trunnion thereof via a pulp lifter chamber. The discharge grate assembly includes a body having apertures for permitting the slurry to flow from the mill shell chamber into the pulp lifter chamber, and a shroud having a number of cover elements and a number of openings located at least partially therebetween. The shroud is movable relative to the body between an open position, in which the openings are at least partially aligned with at least preselected ones of the apertures to permit the slurry to flow therethrough into the pulp lifter chamber, and a closed position, in which the cover elements are at least partially aligned with at least predetermined ones of the apertures, to at least partially prevent the slurry flowing through the apertures back into the mill shell chamber.

Abstract: A system including one or more rubber bodies with respective rubber portions. The rubber body is positionable on a preselected portion of a surface of an object. An inner side of the rubber body is engageable with the preselected portion, and an outer side thereof is opposed to the inner side. The system includes a release film positionable on the rubber body, a heating blanket positionable on the release film, and a breather fabric. The system also includes a vacuum cover engageable with the breather fabric, which is sealed along a perimeter surrounding the preselected portion of the surface. A vacuum pump is in fluid communication with an interior space partially defined by the vacuum cover, for subjecting the rubber body to a predetermined pressure. The rubber portion is vulcanizable when subjected to heat generated by the heating blanket and to the predetermined pressure.

Abstract: A rail assembly including one or more rail bodies formed for supporting rolling engagement of a train wheel thereover, the rolling engagement generating vibrations in the rail body. The rail assembly includes one or more boots formed for attachment to the rail body to substantially electrically isolate the rail body relative to ground material. The boot includes a chamber wall for at least partially defining a chamber between the rail body and the chamber wall when the boot is attached to the rail body. The rail assembly also includes one or more inserts positionable in the chamber, at least a part of the vibrations being transmittable to the insert when the insert is positioned in the chamber, for dissipation of at least a proportion of the part of the vibrations in the insert.

Abstract: A discharge grate assembly for at least partially guiding slurry from a mill shell chamber toward a discharge trunnion thereof via a pulp lifter chamber. The discharge grate assembly includes a body having apertures for permitting the slurry to flow from the mill shell chamber into the pulp lifter chamber, and a shroud having a number of cover elements and a number of openings located at least partially therebetween. The shroud is movable relative to the body between an open position, in which the openings are at least partially aligned with at least preselected ones of the apertures to permit the slurry to flow therethrough into the pulp lifter chamber, and a closed position, in which the cover elements are at least partially aligned with at least predetermined ones of the apertures, to at least partially prevent the slurry flowing through the apertures back into the mill shell chamber.

Abstract: A method of making a special track assembly for supporting a train, including providing a special track segment, and attaching a number of ribs made of a resilient material to exterior surfaces of the special track segment. Adjacent ones of the ribs are spaced apart from each other by predetermined distances to define gaps therebetween respectively. The method also includes attaching one or more wall portions of the resilient material to the ribs, for bridging each gap to at least partially define a number of cavities between the adjacent ribs respectively. Each wall portion is deflectable for dissipating energy transmitted by movement of the special track segment relative to the supporting material which supports the special track assembly.

Abstract: A mill liner assembly for mounting on an inner diameter of a shell of a grinding mill. The mill liner assembly includes one or more shell plates for engagement with the shell, each of the shell plates having a cooperating portion thereof, and one or more lifter bars, each of the lifter bars having a mounting portion thereof, the mounting portion being receivable on the cooperating portion. The mill liner assembly also includes one or more layers having one or more substantially non-resilient materials and a substantially non-sticking surface. The layer is at least partially positioned on at least a first selected one of the cooperating portion and the mounting portion, to position the non-sticking surface thereof for engagement with a second selected one of the cooperating portion and the mounting portion, to impede adhesion of the shell plate and the lifter bar to each other.

Abstract: A grinding mill including one or more lifter bar assemblies mounted on a shell rotatable around a central axis thereof. Each lifter bar assembly is for lifting at least a lifted portion of a charge including ore, and includes a main portion for lifting and directing a main part of the lifted portion in a main part direction substantially orthogonal to the central axis of the shell. The lifter bar assembly also includes one or more terminal lifter bars located proximal to one or both of feed and discharge ends of the shell, for lifting and directing terminal part(s) of the lifted portion of the charge. The terminal lifter bar is positioned for directing the terminal part of the lifted portion of the charge at least partially in a terminal part direction which is substantially non-aligned with the main part direction.

Abstract: A discharge end liner attachable to a discharge end wall in a grinding mill. The discharge end liner includes a number of pulp lifter elements mountable on the discharge end wall for at least partially defining a number of chambers rotatable in the predetermined direction respectively between a submerged condition and a raised condition. The discharge end liner also includes one or more grate subassemblies positionable on the pulp lifter elements, for at least partially screening the slurry. At least a part of each grate subassembly is located by an outer portion of the pulp lifter element in a predetermined position relative to the discharge end wall. An inner portion of each pulp lifter element defines an obtuse angle between the inner portion and the outer portion, for permitting the retained portion of the slurry to evacuate from each chamber respectively while each chamber is in the raised condition.

Abstract: A discharge grate assembly for at least partially guiding slurry from a mill shell chamber in a rotating mill shell to a discharge trunnion thereof via a pulp lifter chamber. The discharge grate assembly includes a body having a number of apertures for permitting the slurry to flow from the mill shell chamber into the pulp lifter chamber. The discharge grate assembly also includes a number of louvers movable between a closed position, in which the apertures in the body are at least partially covered by the louvers, and an open position, in which the apertures are at least partially unobstructed by the louvers.

Abstract: A lifter bar for lifting an engaged portion of a load comprising a number of ore pieces above a disengaged portion of the load in a grinding mill having a shell rotatable about an axis thereof. The lifter bar includes a leading face having one or more leading surfaces, and a trailing face. The lifter bar is mountable on the shell located at a predetermined distance from a trailing face of a preceding lifter bar. When the lifter bar and the preceding lifter bar are mounted on the shell, the leading face and the trailing face of the preceding lifter bar at least partially define a pocket therebetween in which a part of the engaged portion of the load is at least partially retainable, until the leading surface is located in a predetermined release position, at which the part has substantially exited the pocket under the influence of gravity.

Abstract: A rail seal for sealing the gap between a rail and the surrounding surface material in a rail crossing or track construction, wherein the rail seal is removable from the gap and can be re-installed in the gap without damaging the surrounding surface material. More particularly, the rail seal is formed with an integral hinge element that has a closed position and an open position wherein an upper portion of the rail seal is released from and extends upwardly away from a lower portion of the seal body thereby imparting additional flexibility to the seal body. To remove the rail seal from the gap adjacent the rail, the rail seal can be manipulated so as to be pulled free from the gap. In order to re-install the rail seal, the additional flexibility provided by the hinge element allows the rail seal to be manipulated and deformed as required so as to be re-installed within the open gap.

Abstract: A flangeway former and rail boot system where the flangeway former has an anchor for anchoring the former in surrounding material, and a groove for receiving a protrusion on the rail boot for positioning the former on the boot. The system can also include a spacer and retaining clips.