Abstract: A system, method and apparatus for separating materials of different specific gravities including a material flow-path surface having a trap structure with an oscillator coupled thereto to cause oscillation thereof while the surface is immersed in a standing fluid.

Abstract: A system, method and apparatus for separating materials of different specific gravities including a material flow-path surface having a trap structure with an oscillator coupled thereto to cause oscillation thereof while the surface is immersed in a standing fluid.

Abstract: A system, method and apparatus for separating materials of different specific gravities including a material flow-path surface having a trap structure with an oscillator coupled thereto to cause oscillation thereof while the surface is immersed in a standing fluid.

Abstract: The invention provides a method for the separation of solids from a semi-solid viscous mass, the method comprising treating a solids-containing semi-solid viscous mass in an apparatus comprising a separating member incorporating a substantially flat solid surface and a supporting member, wherein the separating member is adapted to selectively impart directional momentum to the solids, thereby facilitating separation of the solids from the semi-solid viscous mass. Preferably the separating member comprises a substantially flat solid surface adapted for vibrational motion, the vibrational motion causing the solids material to be displaced from the remainder of the semi-solid viscous mass.

Abstract: A machine for sorting refuse comprises a rotatable drum (1) having several succeeding processing stations (5, 6, 7) located between an inlet (3) and an outlet (4) and each including one or more rotatable shafts (8) the circumferential surfaces of which are equipped with goods-processing projections and which are mounted at openings in the wall of the drum, the processing projections being adapted to cooperate with the edge portions of the drum wall defining the openings, so as to bring about a processing action on goods fed from the inlet towards the outlet. The processing projections of the shafts (8) in a first station (5) most adjacent the inlet (3) are smaller than the corresponding processing projections in the following station (6) in order, in said first station, to separate fine goods, while allowing coarser goods, during the feed of the goods from the inlet towards the outlet along the bottom of the drum, to pass on for separation in a succeeding station or stations.

Abstract: The present invention is addressed to an apparatus and method for carrying out the effective separation or classification of MSW into fractions with improved efficiency. This improved efficiency is achieved inter alia through the use of various separation devices designed to segregate fractions of MSW based on their ultimate usages or physical properties. Through the utilization of devices optimized to categorize by the physical properties of various fractions, a large percentage of the sortation process can be achieved without the use of human sorters.

Abstract: A shaking table for ore-dressing, having riffles on its deck, has circular orbital motion imposed on it to cause the riffles to oscillate, and for a standing wave to be created between the riffles. The continued circular motion acting on the standing waves causes sharp separation of the material fractions which are discharged continuously from the deck. The slope of the deck and riffles and the configuration of the riffles are critical. The slope of the deck is set empirically by estimating the approximate slope appropriate to the parameters of the material being treated and of the motion imparted to the deck; and the final adjustment is made by slewing the deck in its own plane to obtain an optimum result. For a frusto-conical deck, the adjustment is made on a flat deck and the frusto-conical deck is constructed accordingly. The deck may have rectilinear or curvilinear motion imparted to it, superimposed upon the circular motion.

Abstract: Method and apparatus (10) are provided for separating and classifying particles (48,50,56) by dispersing the particles within a fluid (52) that is upwardly flowing within a cone-shaped pipe (12) that has its large end (20) above its small end (18). Particles of similar size and shape (48,50) migrate to individual levels (A,B) within the flowing fluid. As the fluid is deflected by a plate (42) at the top end of the pipe (12), the smallest particles are collected on a shelf-like flange (40). Ever larger particles are collected as the flow rate of the fluid is increased. To prevent particle sticking on the walls (14) of the pipe (12), additional fluid is caused to flow into the pipe (12) through holes (68) that are specifically provided for that purpose. Sticking is further prevented by high frequency vibrators (70) that are positioned on the apparatus (10).

Abstract: A multi-stage apparatus and process for separating wood chips of a desired size range for pulp production, from an intermixture of materials e.g. from a log chipper. A disc screen screens out the chips and other materials having a size larger than the designated size range. The chips are deposited on an air separating screen through which a vacuum is drawn to draw out the smaller size materials, e.g. sawdust, and to deposit the desired pulp chips for collection and conveyence to the paper processing station.

Abstract: A mobile seed cleaning and/or separating apparatus has a wheeled, self-propelled chassis mounting a plurality of cleaning and/or separating stations. The stations are interconnected by conveyors which transport the seed through the apparatus. The cleaning and/or separating stations include a coarse screen to remove material of a size larger than the seed to be separated, an aspirator to remove relatively light material, a pair of pocket cylinders to separate materials of different sizes and a screen cylinder to finally screen the seed. After cleaning, the seed passes through a weighing device which continuously batch-weights the seed and actuates a prickling machine to introduce a furyside, mold-inhibitor or other chemical.

Abstract: A jigging machine, particularly a movable sieve jigging machine, for the preseparation of deads from valuable material comprises an oscillatory jig bed in the housing filled with separating fluid and comprises deads and valuable material discharge devices located therein, as well as an oscillatory drive for the jig bed. The jigging machine is suitable for underground mining operations in that the outer dimensions of the jigging machine, with respect to the height and width theeof, are designed smaller than the tunnel cross-section of an underground mining operation. A relatively low structure is achieved by designing the housing as a flat trough towards a deads discharge end with the deads discharge being provided as a rising conveyor parallel to the bottom of the trough. Advantageously it is achieved that the quantity of deads to be conveyed is reduced and a considerable saving is provided in terms of energy and expense.

Abstract: A mineral concentrator, including a main support base interconnected to a deck by a flexible support and an oscillator assembly, for recovery of free minerals from a mixture of screened raw materials is disclosed. A symmetrical deck is divided in equal parts by a longitudinal center line plane and includes two sloping surfaces extending laterally and longitudinally downwardly and away from a feed end of said deck. Water and raw material are continuously supplied at the feed end of said deck and moved along the sloping surfaces. First riffles are defined in association with the sloping surfaces and generally perpendicularly to a fall line. The first riffles intercept said raw material and terminate at a point allowing the water and entrained waste materials to fall to the side of the deck for removal from troughs positioned thereat.

Abstract: A process and apparatus for separating metallic from nonmetallic components in a mixture are disclosed. The process and apparatus rely upon the combination of prefractionation by sedimentation, preferably centrifugal sedimentation, followed by final concentration in a laminar flow process, preferably employing a spiral separator and one or more vibrating tables, to recover substantially all metal components of the mixture.

Abstract: A spent hydrotreating catalyst having carbonaceous and metallic deposits comprising generally cylindrical, free flowing particles of regular geometric shape having substantially the same diameter but of varying length is stripped, length graded, density graded using an upward flow of gas through an inclined, vibrating surface, and regenerated to achieve catalyst activity very near that of a fresh catalyst.

Abstract: A sorting device for sorting out a multiplicity of pieces such as tickets, for example, according to their size includes a frame, a drum rotatably mounted in the frame for storing therein pieces such as tickets having different sizes to be sorted out, a sorter on the drum including openings of different dimensions for passing therethrough pieces of different sizes, respectively, and a collector disposed peripherally around the drum in radial alignment with those openings of one dimension for collecting pieces of a particular size passing through the last-mentioned openings. The drum is rotated by a motor about its own axis to cause the pieces of the particular size to be discharged through the openings of the one dimension out of the drum. The sorting device also has a separator for separating superimposed sorted-out pieces from each other. Magnetic or optical information recorded on sorted-out pieces is read by a magnetic or optical reader.

Abstract: A drum for separation of a bulk material into a heavier and a lighter fraction is arranged to be rotated around its central axis at a certain velocity and to be traversed by a flow of air at a certain flow velocity. The drum has at least one discharge aperture for the heavier fraction and at least one discharge aperture for the lighter fraction further on in the drum in the direction of the air flow.

Abstract: A method for reclaiming aluminum cans from municipal refuse is disclosed. The method includes a first screening operation to remove materials substantially larger than the cans, a second screening operation to remove material substantially smaller than the cans, a magnetic separation to remove ferrous metals, a friction-gravity separation to remove lightweight materials, an air separation to remove heavy materials and a final reclamation of aluminum cans.

Abstract: A self cleaning rotary screen apparatus is disclosed which comprises an outer shell formed from a plurality of spaced cylindrical hoops that are welded to a plurality of longitudinal bars which extend the full length of the shell. The hoops are variably spaced along the length of the shell to provide different sized screen openings. In addition, for aiding in the screening operation and for keeping the material moving through the screen, an internal helical blade construction comprising a multiple helix at the entrance to the screen and a single helix thereafter is welded to the longitudinal bars over the full length of the shell.

Abstract: The apparatus serves the purpose of separating trash from less heavy firm articles in a flow of liquid. It has a casing wherein a horizontal revolving screen is located with members which impart motion to trash. Accomodated in the casing coaxially with the revolving screen is a contrivance for the separation, feeding and discharging of trash which is attached to the revolving screen at the end thereof where the flow of liquid carrying the uncleaned firm articles enters the revolving screen. The contrivance consists of an outward cylinder and an inward cylinder. The outward cylinder is provided with ports through which the outflow of liquid and the smaller particles of trash from the revolving screen are fed. Ports provided in the inward cylinder serve to admit the greater particles of trash and discharge all the trash separated. Partitions subdivide the space between the cylinders into passages extending transversely with respect to the longitudinal axis of the contrivance.

Abstract: Heavy metal values are separated from particulate material such as, for example, river sand or gravel, by depositing the material in a vibrating, inclined chute, where the coarser elements of the material are separated by a screen, and the material is then passed into two successive troughs for crude and fine extractions, whereby, tailings in the form of sand and other light particles are flushed out leaving any heavy metal values deposited in the second trough for discharge through a normally closed discharge opening. Flushing in the troughs is effected using perforated pipes for spraying water into the material and creating a turbulent flowing suspension of the particles.

Abstract: A portable sluice pan is described for panning for gold and other valuable heavy minerals from placer deposits. The pan includes an elongated trough having a feed hopper at one end and a removable flexible riffle mat in the bottom of the trough to cause the placer pulp to flow in a turbulent manner over the riffles to stratify the heavier and lighter materials. The sluice pan is constructed of light weight material such as aluminum and may be hand held during operation.