This disclosure relates to a wear resistant rubber composition for lining mining equipment. The composition comprises a tri-elastomer blend of epichlorohydrin elastomer, epoxidised natural elastomer and nitrile elastomer. The composition further includes silicon dioxide, hydrocarbon resin, cologhony, silane and an antioxidant.
An amphibious vehicle for depositing free-draining slurry particles to create a drainage pathway in a tailings storage waterbody is described. The amphibious vehicle comprises: (i) a floating platform having at least one drive; (ii) at least one hydrocyclone mounted on a forward portion of the platform, each hydrocyclone having (a) an underflow for directing discharges of free-draining slurry in front of the platform to start or continue the drainage pathway, and (b) an overflow for directing liquid to a side of the drainage pathway; and (iv) a feed manifold mounted on the platform and having: (a) at least one outlet, each outlet feeding one of the at least one hydrocyclones, and (b) at least one inlet for coupling to a flexible pipe wherein the inlet includes a joint having multiple degrees of freedom.
Stringer tube (30) for vibrating screens (10) having different screen panels (22), the stringer tube (30) comprising an elongated body defining a longitudinal axis (33) and having a plurality of longitudinally spaced elongated slots (42) along the longitudinal axis (33) in a top wall (34) and a plurality of transverse supports (44) which are defined by the top wall (34) extending generally transverse to the longitudinal axis (33) between two adjacent elongated slots (42). The elongated slots (42) are configured to cooperative receive a lower portion (68) of different clip rails (32) on which screen panels (22) are mounted or otherwise supported.
A circuit for preparing ore particles for extracting valuable minerals therefrom is described. The circuit comprises: (i) a comminution stage reducing the size of run-of-mine ore to ore particles having a P80 of less than 5mm; (ii) a feed pump operable to receive those ore particles; (iii) a vertical grinding mill in flow communication with the feed pump to receive ore particles therefrom and to output ore particles having a P80 of less than 400 μm; (iv) a dual stage hydrocyclone to separate the received ore into an overflow having a P80 of less than 250 μm, and an underflow having a mass proportion of material smaller than 75 μm of less than 15%; and (v) a coarse particle flotation device operable to separate mineral-rich ore particles therein and to feed them to the feed pump.
A pumping system for pumping solids from near a bed of a salt pond is described. The pumping system comprises: (i) a first and second floating platform mutually coupled; (ii) at least one hydraulic directional jet coupled to the first floating platform for moving the floating platform over the surface of the pond; (iii) a winch mounted on the first floating platform and having a cable extending through a central aperture; and (iv) a submersible dewatering pump coupled to the winch cable. The submersible pump includes a downwards directed sparger device for breaking up salt solids on the pond bed to suspend the salt solids in liquid and thereby enable pumping thereof by the submersible pump.
A knife gate valve comprises an outer peripheral portion surrounding a central opening with a lower seal groove (40) formed in the lower portion of the valve body portion, the lower seal groove defining: a seal mounting area and an expansion cavity adjacent the seal mounting area.
F16K 3/02 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor
F16J 15/06 - Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
7.
SLEEVE SEAL LUBRICATION SYSTEM AND METHOD FOR A GATE VALVE
A lubricating sealing arrangement for use in a gate valve (10) which includes two annular members (70, 72), each structured with lubricating channels to direct a lubricating fluid to a gate (36) of the valve as it moves between the two adjacently positioned annular members.
F16K 3/02 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing facesPackings therefor
An adhesive composition for adhering an elastomer layer to a metal substrate is described, wherein the adhesive composition includes a blowing agent which may be in an amount of about 1 wt% to about 5 wt%. A method of adhering an elastomer layer to a metal substrate is also described, which includes (a) adhering the elastomer layer to the metal substrate by applying the adhesive composition between the elastomer layer and the metal substrate; and, (b) allowing the adhesive composition to cure.
C09J 5/02 - Adhesive processes in generalAdhesive processes not provided for elsewhere, e.g. relating to primers involving pretreatment of the surfaces to be joined
C09J 5/08 - Adhesive processes in generalAdhesive processes not provided for elsewhere, e.g. relating to primers using foamed adhesives
C09J 161/06 - Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
B32B 15/06 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance of rubber
B32B 37/12 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
B32B 15/04 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
An exciter housing (12) for a vibrating screen. The housing comprises a body having an upper portion (14), a lower portion, and opposing ends (18). At least one of the opposing ends has an opening for receiving a gear. The housing further comprises a passageway extending between the ends and being defined by opposing walls.
B07B 1/28 - Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting, or wobbling screens
B06B 1/16 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
F16C 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
F16C 33/66 - Special parts or details in view of lubrication
F16C 35/04 - Rigid support of bearing unitsHousings, e.g. caps, covers in the case of ball or roller bearings
A jacketed pipe pump includes a manifold system for use in directing mediating fluid between annular spaces formed in adjacently-positioned jacketed pipes, each jacketed pipe comprising an internal pipe and an external pipe having an annular space therebetween for the flow of a mediating fluid therein, the manifold system also being useful for flowing fluid from a jacketed pipe to a pump casing configured with a conduit that is positioned not in fluid communication with the pump chamber of the pump casing, but which is positioned to direct mediating fluid from an attached jacketed pipe through the conduit of the pump casing for movement of the mediating fluid to further communicating pipe systems.
Centrifugal pump arrangements are provided with a pump casing having a volute, an impeller, a backing plate having an annular radial surface and annular skirt portion that encircles the pump casing and an inlet having an annular inlet flange configured to receive a strainer device with brackets that attach to the annular inlet flange, the pump arrangements being comprised of a number or structural parts that facilitate manufacture and assembly while also reducing degradation of parts of the pump arrangement.
F04D 7/04 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogeneous
A head lifter bar for mounting on an end of a grinding mill is described. The head lifter bar defines a longitudinal axis extending between a periphery end and a hub end thereof and a vertical plane extending through the longitudinal axis. The bar comprises: (i) a rear wall, (ii) an upper surface, (iii) a front wall opposite the rear wall, and (iv) a profiled surface extending between the upper surface and an upper portion of the front wall. The profiled surface defines a central portion oriented at a first acute angle, a periphery end portion extending from the central portion to the periphery end, and a hub end portion extending from the central portion to the hub end. The periphery end portion is recessed from the central portion such that the upper surface is narrower at the periphery end than at the central portion.
B02C 17/18 - Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls Details
Controlling the operation of a hydrocyclone to maintain the hydrocyclone in a desired operational state as it separates a pumped fluid into an overflow stream and an underflow stream is described. The method comprises measuring vibrations of the hydrocyclone at a selected frequency within a predetermined frequency range; comparing a characteristic of the measured vibrations at the selected frequency with a plurality of values representing transitions between different operational states of the hydrocyclone to identify a current operational state of the hydrocyclone; and generating an adjustment setting to change the identified current operational state to the desired operational state, where the adjustment setting increases or decreases a pumped fluid parameter.
A sensing system for sensing operational parameters of equipment is described. The sensing system comprises: a plurality of intelligent mounting points, a plurality of sensors, each coupled to a respective mounting point, and a data harvester coupled to the plurality of sensors. Each intelligent mounting point is located at a position on the equipment at which a measurement is to be recorded, and includes at least one equipment identification parameter and at least one sensing point parameter. The data harvester comprises: (i) a wireless transceiver for communicating with the plurality of sensors and a portable device, (ii) a network connection for communicating with a local computer coupled to a distributed control system, (iii) a memory for storing data captured by the sensors, and (iv) a processor operable to control the operation of the data harvester.
G01M 99/00 - Subject matter not provided for in other groups of this subclass
H04Q 9/00 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
A cyclonic separator (10) comprises a separation chamber (14), a feed inlet (16) leading into the separation chamber and an underflow discharge (18) leading from the separation chamber. The cyclonic separator further comprises a vortex finder (20) which has an inlet end positioned in the separation chamber, an outlet end defining an overflow discharge, and a bleed opening (48) defined by the inlet and outlet ends of the vortex finder and through which a portion of an overflow stream can be bled from the vortex finder to remove oversized particles from the overflow stream.
B04C 5/13 - Construction of the overflow ducting, e.g. diffusing or spiral exits formed as a vortex finder and extending into the vortex chamberDischarge from vortex finder otherwise than at the top of the cycloneDevices for controlling the overflow
B04C 11/00 - Accessories, e.g. safety or control devices, not otherwise provided for
A sensing system for sensing operational parameters of equipment is described. The sensing system comprises: a plurality of intelligent mounting points, a plurality of sensors, each coupled to a respective mounting point, and a data harvester coupled to the plurality of sensors. Each intelligent mounting point is located at a position on the equipment at which a measurement is to be recorded, and includes at least one equipment identification parameter and at least one sensing point parameter. The data harvester comprises: (i) a wireless transceiver for communicating with the plurality of sensors and a portable device, (ii) a network connection for communicating with a local computer coupled to a distributed control system, (iii) a memory for storing data captured by the sensors, and (iv) a processor operable to control the operation of the data harvester.
A lifter bar for a grinding mill is described. The lifter bar comprises: an elongate structural support defining a longitudinal axis and extending from (i) a first end transverse to the longitudinal axis to (ii) a second end transverse to the longitudinal axis; a plurality of structural plates extending along the longitudinal axis in spaced relation, where each structural plate is transverse to the longitudinal axis, and defines opposed edges. The lifter bar may further comprise at least two protective plate portions, each protective plate portion being mounted over one set of the opposed edges.
B02C 17/18 - Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls Details
A part-conical section (20,22) for use as part of a separation chamber (14) of a hydrocyclone (10) is described. The part-conical section comprises: an upper end defining internal and external diameters and including an upper mount (44,48); a lower end defining smaller internal and external diameters than the upper end, and including a lower mount (46,50); and a sidewall (26) defining an internal passageway (28) along a fluid transport axis (30) and an external surface. The internal passageway extends from the upper end to the lower end and defines a radially-inward tapering portion with respect to the fluid transport axis, and a non-inwardly-tapering portion with respect to the fluid transport axis. The tapering portion extends from the upper end to the non-inwardly-tapering portion, and the non- inwardly-tapering portion extends from a narrow end of the tapering portion to the lower end. A spigot (24) and a hydrocyclone (10) are also described.
A valve for a positive displacement pump, a valve seat, a valve body for use therewith, and a pump comprising such a valve are described. The valve comprises a valve body and a valve seat each having engagement surfaces which are configured, in use, to at least partially engage with one another when the valve is in a closed position to thereby mitigate fluid flow therethrough. The valve body is movable, in use, relative to the valve seat along a linear path of motion from the closed position to an open position, wherein at least a peripheral portion of the engagement surface of the valve body extends at an obtuse angle relative to the linear path of motion in the direction of motion from the closed position to the open position and wherein the length of the peripheral portion is at least 13% of the length of the engagement surface.
A lifter bar for a grinding mill is described. The lifter bar comprises: a longitudinal support bar; a plurality of inserts mounted in spaced relation on a first surface of the longitudinal support bar, where each insert comprises a channel for receiving an elongate sensor; sensing electronics mounted within the lifter bar for (i) monitoring each elongate sensor to detect any change in conductivity thereof, and (ii) transmitting a signal for each elongate sensor to an external device. The signal is indicative of the integrity of the elongate sensor. A protective covering surrounds the support bar, inserts, and sensing electronics. A method and system for detecting wear are also described.
B02C 17/18 - Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls Details
A wear-levelling apparatus (124) for a cyclone (100) includes: an upper section (128) defining an upper portion of a frusto-conical channel configured to receive material for delivery to a lower portion of the channel; a bearing assembly connected to the upper section; and a lower section (132) coupled to the upper section by the bearing assembly to permit rotation of the lower section about an axis of the channel; the lower section defining a lower portion of the channel configured to receive the material from the upper portion for discharge toward an outlet (120) of the cyclone.
WEIR MINERALS AFRICA (PROPRIETARY) LIMITED (South Africa)
WEIR GROUP IP LIMITED (United Kingdom)
Inventor
Mdlazi, Lungile
Abstract
A minerals processing unit, such as a vibrating screen (10), is described. The vibrating screen (10) comprises a sensing mechanism operable to detect: (i) motion of the vibrating screen (10) in multiple directions, and (ii) detect planar deviations of a mesh surface (22). The sensing mechanism may comprise a plurality of discrete sensors (60-66), including a gyroscopic sensor (60) operable to detect linear movement in three mutually orthogonal directions, and one or more of roll, pitch, and yaw. The sensing mechanism may further comprise a temperature sensor (64a, 64b) for measuring the temperature of a drive mechanism (42) and an ambient temperature sensor (66a, 66b) for measuring a control value to compare with the drive mechanism temperature.
A valve for a positive displacement pump, and a positive displacement pump including such a valve, are described. The valve comprises a valve body, a valve seat, a biaser to urge the valve seat toward the valve body, and a displacement device. The displacement device is movable, in use, to draw the valve from a closed condition to an open condition. The displacement device and the valve body comprise a cooperating mechanism operable to generate a drawing force between the valve body and the displacement device to at least partially overcome the urging of the biaser as the displacement device moves. A method of selectively allowing or preventing fluid flow through such a valve is also described.
A valve for a positive displacement pump, a valve seat, a valve body for use therewith, and a pump comprising such a valve are described. The valve comprises a valve body and a valve seat each having engagement surfaces which are configured, in use, to at least partially engage with one another when the valve is in a closed position to thereby mitigate fluid flow therethrough. The valve body is movable, in use, relative to the valve seat along a linear path of motion from the closed position to an open position, wherein at least a peripheral portion of the engagement surface of the valve body extends at an obtuse angle relative to the linear path of motion in the direction of motion from the closed position to the open position and wherein the length of the peripheral portion is at least 13% of the length of the engagement surface.
A method of forming a rotary part is disclosed. The method comprises (a) rotating a mandrel about an axis, (b) delivering a metal feed onto the surface of the mandrel and (c) exposing the particles at the surface to a high energy discharge so that the particles melt together to form a surface layer of metal. The method also comprises repeating steps (a) to (c) by subsequently delivering the metal feed onto the formed surface layer to form the rotary part radially from the mandrel to an outer perimeter with a desired size and shape. Also disclosed are rotary parts formed by the method and an apparatus for forming a rotary part in accordance with the method.
B33Y 50/02 - Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
B33Y 30/00 - Apparatus for additive manufacturingDetails thereof or accessories therefor
B33Y 80/00 - Products made by additive manufacturing
B22F 5/10 - Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
B22F 7/02 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite layers
A method of generating compressive residual stresses through a thickness of a metal component comprising the steps: receiving a metal base component (10), which in use is subjected to applied pressure and applying by thermal deposition cladding (16) to one or more surfaces (14) of the base component. The cladding (16) comprises one or more layers of metal or metal alloy. The method also includes, subsequent to the cladding step, applying autofrettage to the clad component thereby generating compressive residual stresses through the one or more layers of metal or metal alloy (16) and at least part way through the base component.
F04B 53/16 - CasingsCylindersCylinder liners or headsFluid connections
C21D 7/12 - Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars by expanding tubular bodies
B23P 9/00 - Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearingsFeatures of such surfaces not otherwise provided for, their treatment being unspecified
C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
F04B 47/02 - Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
E21B 43/26 - Methods for stimulating production by forming crevices or fractures
27.
Tracking parts in manufacturing and service facilities
Parts in a manufacturing or service facility are electronically tracked using wireless beacons, strategically positioned receiver devices in the facility, and a monitoring server. The wireless beacons are individually coupled to the parts in the facility and equipped with sensors that wake the wireless beacons up to wirelessly transmit location signals when sensed data indicates the parts are moving to the receiver devices. The receiver devices, in turn, transmit the location signals across a network to the monitoring server, which uses the location signals and identifiers of the receiver devices to locate the work areas of the facility in which the wireless beacons—and thus coupled parts—are located.
H04W 4/70 - Services for machine-to-machine communication [M2M] or machine type communication [MTC]
H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
H04W 4/029 - Location-based management or tracking services
H04W 4/33 - Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
H04B 17/23 - Indication means, e.g. displays, alarms or audible means
H04B 17/27 - MonitoringTesting of receivers for locating or positioning the transmitter
H04W 4/06 - Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]Services to user groupsOne-way selective calling services
Parts in a manufacturing or service facility are electronically tracked using wireless beacons and location tags, strategically positioned receiver devices in the facility, and a monitoring server. The wireless beacons and location tags are individually coupled to parts in the facility to be tracked and store beacon-, tag-, and part-specific identifiers that can be wirelessly communicated to the monitoring server through receiver devices or mobile devices of workers in the facility. In particular, the location tags transmit various identifiers when the mobile devices or wireless beacons are brought into close proximity to the location tags. The mobile devices allow workers to request on-demand and up-to-date work orders for the parts with location tags, and the wireless beacons communicate the location tags' identifiers to the monitoring server. The monitoring server uses the identifiers to track the locations of the parts and manage electronic work orders for the parts.
G06Q 10/08 - Logistics, e.g. warehousing, loading or distributionInventory or stock management
H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
H04B 17/27 - MonitoringTesting of receivers for locating or positioning the transmitter
H04W 4/02 - Services making use of location information
H04W 4/70 - Services for machine-to-machine communication [M2M] or machine type communication [MTC]
H04W 4/029 - Location-based management or tracking services
H04W 4/33 - Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
H04W 4/04 - in a dedicated environment, e.g. buildings or vehicles
H04W 4/06 - Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]Services to user groupsOne-way selective calling services
H04B 17/23 - Indication means, e.g. displays, alarms or audible means
A method of generating compressive residual stresses through a thickness of a metal component comprising the steps: receiving a metal base component (10), which in use is subjected to applied pressure and applying by thermal deposition cladding (16) to one or more surfaces (14) of the base component. The cladding (16) comprises one or more layers of metal or metal alloy. The method also includes, subsequent to the cladding step, applying autofrettage to the clad component thereby generating compressive residual stresses through the one or more layers of metal or metal alloy (16) and at least part way through the base component.
C21D 7/12 - Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars by expanding tubular bodies
patents
