Abstract: A discharge grate assembly in a discharge end wall system in a mill shell of a grinding mill. The mill shell defines a mill shell chamber in which a charge including grinding balls and ore-bearing rocks is positioned. The mill shell is rotatable about a central axis thereof for comminution of the ore-bearing rocks to form the grinding balls into worn grinding balls and to produce a slurry including liquid and worn rock pieces from the ore-bearing rocks. The discharge grate assembly includes a body with elongate apertures therein, each aperture extending between a first end thereof and a wider second end thereof. The first and second ends of the aperture are partially defined by respective first and second end walls that are at least partially rectilinear, for impeding the worn grinding balls and the worn rock pieces from lodging in the aperture.

Abstract: A split pulp chamber insert assembly formed for installation in a pulp chamber on a discharge end wall in a grinding mill rotatable about an axis thereof. The split pulp chamber insert assembly include two or more insert elements, configured to cooperate to form a lining covering one or more portions of pulp chamber surfaces that partially define the pulp chamber in which the insert elements are positioned. The split pulp chamber assembly also includes a number of fasteners, for securing the insert elements in predetermined positions in the pulp chamber relative to each other to form the lining that covers the one or more portions of the pulp chamber surfaces.

Abstract: A tuned mass damper for damping airborne vibrations at one or more rail frequencies from a rail generated by movement of wheels over the rail. The tuned mass damper includes one or more damper elements including a damper element material, and a body element including a body material. The damper elements are at least partially embedded in the body element. The body element has inner and lower exterior surfaces formed to fit within first and second pockets on opposite first and second sides of the rail defined by a web portion and a foot. The damper element material and the body material are selected and formed so that the tuned mass damper vibrates in response to movement of the wheels over the rail at one or more damper frequencies that at least partially interferes with the rail frequencies.

Abstract: A clip assembly for securing first and second tuned mass dampers to respective first and second sides of a rail. The clip assembly includes a bar element having a connector portion extending between first and second ends thereof and formed to be positioned in a predetermined location relative to the rail at least partially under a foot of the rail, and a first clamping arm connected with the connector portion at the first end of the connector portion, the first clamping arm being formed to engage the first tuned mass damper. The bar element also includes a linkage section located at the second end of the connector portion. The clip assembly includes a second clamping arm extending between upper and lower ends thereof, the lower end comprising a locking portion securable to the linkage section, and the upper end being formed for engagement with the second tuned mass damper.

Abstract: A discharge end wall system including a discharge wall assembly in which a number of pulp chambers are defined, and one or more plug elements at least partially occupying one or more of the pulp chambers.

Abstract: A split pulp chamber insert assembly formed for installation in a pulp chamber on a discharge end wall in a grinding mill rotatable about an axis thereof. The split pulp chamber insert assembly include two or more insert elements, configured to cooperate to form a lining covering one or more portions of pulp chamber surfaces that partially define the pulp chamber in which the insert elements are positioned. The split pulp chamber assembly also includes a number of fasteners, for securing the insert elements in predetermined positions in the pulp chamber relative to each other to form the lining that covers the one or more portions of the pulp chamber surfaces.

Abstract: A clip assembly for securing first and second tuned mass dampers to respective first and second sides of a rail. The clip assembly includes a bar element having a connector portion extending between first and second ends thereof and formed to be positioned in a predetermined location relative to the rail at least partially under a foot of the rail, and a first clamping arm connected with the connector portion at the first end of the connector portion, the first clamping arm being formed to engage the first tuned mass damper. The bar element also includes a linkage section located at the second end of the connector portion. The clip assembly includes a second clamping arm extending between upper and lower ends thereof, the lower end comprising a locking portion securable to the linkage section, and the upper end being formed for engagement with the second tuned mass damper.

Abstract: A tuned mass damper for damping airborne vibrations at one or more rail frequencies from a rail generated by movement of wheels over the rail. The tuned mass damper includes one or more damper elements including a damper element material, and a body element including a body material. The damper elements are at least partially embedded in the body element. The body element has inner and lower exterior surfaces formed to fit within first and second pockets on opposite first and second sides of the rail defined by a web portion and a foot. The damper element material and the body material are selected and formed so that the tuned mass damper vibrates in response to movement of the wheels over the rail at one or more damper frequencies that at least partially interferes with the rail frequencies.

Abstract: A discharge end wall system mounted on a discharge end wall in a grinding mill. The discharge wall system includes a discharge end assembly that has a number of pulp lifter segments radially arranged on the discharge end wall relative to the axis of rotation, and a number of curved walls connected with the pulp lifter segments and arranged in pairs of adjacent ones thereof. Each trailing one of the curved walls has a curved leading edge surface that is concave in relation to the direction of rotation and, with a leading edge surface of a selected leading one of the pulp lifter segments, forms a continuous leading wall that is partially straight and partially curved. The leading wall is configured to accelerate pulp through the pulp chamber partially thereby defined respectively to a central hole, when the pulp chamber partially defined thereby is in the discharge condition thereof.

Abstract: A discharge end wall system including a discharge wall assembly in which a number of pulp chambers are defined, and one or more plug elements at least partially occupying one or more of the pulp chambers.

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

Abstract: A special trackwork assembly including a special trackwork body formed to support wheels of a train moving over a running surface portion of an exterior surface of the special trackwork body that generate traffic-related vibrations of the special trackwork body having one or more frequencies of interest. The special trackwork assembly also includes one or more tuned mass dampers secured to the special trackwork body and formed to vibrate, in response to the traffic-related vibrations of the special trackwork body, at the frequency of interest, to at least partially dampen the traffic-related vibrations of the special trackwork body.

Abstract: A liner system for installation in a rotatable mill shell having an inner side and an opposed outer side, the liner system including one or more lifter bars. The lifter bar includes a body, a channel plate secured to the body and defining a channel axis, including one or more lateral extensions extending transversely from the central portion in relation to the channel axis, and one or more insert elements positioned between the lateral extension and the inner side of the mill shell, for resisting outward movement of the lateral extension toward the inner side. The liner system also includes one or more attachment assemblies, each including a bolt, for securing the lifter bar to the mill shell. The insert elements are configured to maintain the bolt in a predetermined position in which an axis of the bolt is aligned with the channel axis.

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 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 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 liner system for installation in a rotatable mill shell having an inner side and an opposed outer side, the liner system including one or more lifter bars. The lifter bar includes a body, a channel plate secured to the body and defining a channel axis, including one or more lateral extensions extending transversely from the central portion in relation to the channel axis, and one or more insert elements positioned between the lateral extension and the inner side of the mill shell, for resisting outward movement of the lateral extension toward the inner side. The liner system also includes one or more attachment assemblies, each including a bolt, for securing the lifter bar to the mill shell. The insert elements are configured to maintain the bolt in a predetermined position in which an axis of the bolt is aligned with the channel axis.

Abstract: A special trackwork assembly including a special trackwork body formed to support wheels of a train moving over a running surface portion of an exterior surface of the special trackwork body that generate traffic-related vibrations of the special trackwork body having one or more frequencies of interest. The special trackwork assembly also includes one or more tuned mass dampers secured to the special trackwork body and formed to vibrate, in response to the traffic-related vibrations of the special trackwork body, at the frequency of interest, to at least partially dampen the traffic-related vibrations of the special trackwork body.

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.