Abstract: A process and associated system for the improved reclamation of disturbed lands (e.g., mined lands) is disclosed. In particular, the system including a dewatering cyclone, a screw classifier, and a dewatering apparatus (e.g. a dewatering belt) arranged in series to enable rapid and cost effective dewatering of slurries containing dilute clay and sand tailings to create an improved engineered reclamation material (ERM). The ERM formed by the controlled combining of dewatered sand tailings with dilute clay slurry and with a flocculant and overburden. The ratio of clay:sand:overburden of the ERM may be achieved by balancing the solid content (Cw) and water content (1?Cw) materials of the clay slurry, sand tailings and overburden. In some embodiments, the system may include at least one additional component, such as, for example, static screen(s), centrifuge(s), vibrating screens, drum screens, belt screens, belt filters, and/or other liquid-solid separation devices.

Abstract: A process and associated system for the improved reclamation of disturbed lands (e.g., mined lands) is disclosed. In particular, the system including a dewatering cyclone, a screw classifier, and a dewatering apparatus (e.g. a dewatering belt) arranged in series to enable rapid and cost effective dewatering of slurries containing dilute clay and sand tailings to create an improved engineered reclamation material (ERM). The ERM formed by the controlled combining of dewatered sand tailings with dilute clay slurry and with a flocculant and overburden. The ratio of clay:sand: overburden of the ERM may be achieved by balancing the solid content (Cw) and water content (1?Cw) materials of the clay slurry, sand tailings and overburden. In some embodiments, the system may include at least one additional component, such as, for example, static screen(s), centrifuge(s), vibrating screens, drum screens, belt screens, belt filters, and/or other liquid-solid separation devices.

Abstract: A process and associated system for the improved reclamation of disturbed lands (e.g., mined lands) is disclosed. In particular, the system including a dewatering cyclone, a screw classifier, and a dewatering apparatus (e.g. a dewatering belt) arranged in series to enable rapid and cost effective dewatering of slurries containing dilute clay and sand tailings to create an improved engineered reclamation material (ERM). The ERM formed by the controlled combining of dewatered sand tailings with dilute clay slurry and with a flocculant and overburden. The ratio of clay:sand:overburden of the ERM may be achieved by balancing the solid content (Cw) and water content (1?Cw) materials of the clay slurry, sand tailings and overburden. In some embodiments, the system may include at least one additional component, such as, for example, static screen(s), centrifuge(s), vibrating screens, drum screens, belt screens, belt filters, and/or other liquid-solid separation devices.

Abstract: A process and associated system for the improved reclamation of disturbed lands (e.g., mined lands) is disclosed. In particular, the system including a dewatering cyclone, a screw classifier, and a dewatering apparatus (e.g. a dewatering belt) arranged in series to enable rapid and cost effective dewatering of slurries containing dilute clay and sand tailings to create an improved engineered reclamation material (ERM). The ERM formed by the controlled combining of dewatered sand tailings with dilute clay slurry and with a flocculant and overburden. The ratio of clay:sand:overburden of the ERM may be achieved by balancing the solid content (Cw) and water content (1-Cw) materials of the clay slurry, sand tailings and overburden. In some embodiments, the system may include at least one additional component, such as, for example, static screen(s), centrifuge(s), vibrating screens, drum screens, belt screens, belt filters, and/or other liquid-solid separation devices.

Abstract: An electronic circuit arranged to terminate automatically a plurality of conductors at or near a node of a network comprising: a first input terminal electrically coupled to a first output terminal; a second input terminal electrically coupled to a second output terminal; selectable current limiting means (SCLM) arranged to limit an amount of current that may flow between the second output terminal and the second input terminal; and detecting means arranged to control switching means operable to switch the circuit between a first and a second condition responsive to the electrical potential Vx of the second output terminal, wherein in the first condition the circuit is a terminating circuit and the SCLM is selected to have a first current limit, and in the second condition the circuit is a continuing circuit and the SCLM is selected to have a second current limit.

Abstract: An electronic circuit arranged to terminate automatically a plurality of conductors at or near a node of a network comprising: a first input terminal electrically coupled to a first output terminal; a second input terminal electrically coupled to a second output terminal; selectable current limiting means (SCLM) arranged to limit an amount of current that may flow between the second output terminal and the second input terminal; and detecting means arranged to control switching means operable to switch the circuit between a first and a second condition responsive to the electrical potential Vx of the second output terminal, wherein in the first condition the circuit is a terminating circuit and the SCLM is selected to have a first current limit, and in the second condition the circuit is a continuing circuit and the SCLM is selected to have a second current limit.

Abstract: A classifier includes a central particle inlet, an inclined feed surface, and a classification surface. A plurality of particle feeding vanes are positioned above the feed surface, and the plurality of particle feeding vanes rotate above the feed surface. A plurality of classification vanes are positioned above the classification surface, and the plurality of classification vanes rotate above the classification surface. Particles enter the classifier through the inlet near an axis of rotation and flow radially outward on the feed surface to the classification surface.

Abstract: A classifier includes a central particle inlet, an inclined feed surface, and a classification surface. A plurality of particle feeding vanes are positioned above the feed surface, and the plurality of particle feeding vanes rotate above the feed surface. A plurality of classification vanes are positioned above the classification surface, and the plurality of classification vanes rotate above the classification surface. Particles enter the classifier through the inlet near an axis of rotation and flow radially outward on the feed surface to the classification surface.

Abstract: An electronic circuit for terminating a plurality of conductors at a node of a network, including means to detect current flowing through one of the conductors and means to switch between a continuing circuit, whereby continuity of the network is maintained, on detecting current above a first predetermined threshold, and a terminating circuit, whereby the network is terminated with an appropriate terminating circuit, upon detection of current at, or below, a second predetermined threshold.

Abstract: A redundant fieldbus system provides power and communications in a parallel physical configuration between the host system and attached field devices irrespective of any single point failure in the network. In case of a fault, the redundant fieldbus system automatically eliminates the faulty section of the network, switches power and communications to the healthy portion of the network and terminates the network for signal integrity. A device coupler for the system may include a fault detector coupled to an auto-termination circuit that terminates a fieldbus cable when a fault is detected. The device coupler may include fault detection and isolation coupled to each set of spur terminals used to connect field devices to the device coupler. A field device for the system may include circuitry for deselecting a faulty cable while maintaining connection to a healthy cable.

Abstract: A redundant fieldbus redundant system includes two independent conditioned power modules which automatically detect cable faults, such as short or open circuits on both the host and field sides of the network. The power modules are interfaced directly on one side to the primary and backup H1 cards of the host system, and are directly interfaced on the other side to an automatically terminating network device coupler module which provides connections to field devices. The redundant fieldbus system provides power and communications in a parallel physical configuration between the host system and the field devices irrespective of any single point failure in the network. In case of a fault, the redundant fieldbus system automatically eliminates the faulty section of the network, switches power and communications to the healthy portion of the network and terminates the network for signal integrity.

Abstract: An electronic circuit for terminating a plurality of conductors at a node of a network, comprising means to detect current flowing through one of the conductors and means to switch between a continuing circuit, whereby continuity of the network is maintained, on detecting current above a first predetermined threshold, and a terminating circuit, whereby the network is terminated with an appropriate terminating circuit, upon detection of current at, or below, a second predetermined threshold.

Abstract: An apparatus for classifying a mixture of fine and coarse particles in a fluid stream by size or density comprises a housing, a boundary layer momentum transfer device, and an inlet flow control mechanism. The housing comprises an inlet, an interior chamber, and a fine particle outlet. The boundary layer momentum transfer device comprises a plurality of disks stacked in spaced, parallel relation in the interior chamber. The disks are rotatable about a disk axis. The disks have respective central openings cooperatively defining a plenum having a closed axial end and an opposing open axial end. The plenum communicates with spaces defined between each adjacent disk to cooperatively define a fine particle flow path from the interior chamber, through the spaces, through the plenum and the open axial end thereof, and to the fine particle outlet. The inlet flow control mechanism communicates with the interior chamber and provides an adjustable inlet flow path into the interior chamber.

Abstract: An apparatus for classifying a mixture of fine and coarse particles in a fluid stream by size or density comprises a housing, a boundary layer momentum transfer device, and an inlet flow control mechanism. The housing comprises an inlet, an interior chamber, and a fine particle outlet. The boundary layer momentum transfer device comprises a plurality of disks stacked in spaced, parallel relation in the interior chamber. The disks are rotatable about a disk axis. The disks have respective central openings cooperatively defining a plenum having a closed axial end and an opposing open axial end. The plenum communicates with spaces defined between each adjacent disk to cooperatively define a fine particle flow path from the interior chamber, through the spaces, through the plenum and the open axial end thereof, and to the fine particle outlet. The inlet flow control mechanism communicates with the interior chamber and provides an adjustable inlet flow path into the interior chamber.