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| Number | Title | Issue Date |
| 7004327 | Method for sink and float separation of fine grained mineral raw materials A separating apparatus for the sink and float separation of a mineral raw material according to density using a liquid. The separating apparatus includes a rotatable drum including a plurality of sink-product pockets for discharging a sink product of the mineral raw... | 02/28/2006 |
| 6527125 | Washing liquid distribution system A system for delivering the same or differing controllable amounts of washing liquid to several flights of a spiral separator including a housing, a plurality of spaced members having a respective generally vertical passage communicating with fluid in the... | 03/04/2003 |
| 6095341 | Apparatus and process for separating contaminants from particulate material An apparatus and process for separating contaminants from particulate material for separating undesirable debris from particulate material such as sand or gravel quickly and efficiently for increasing the production of separated gravel. A conveyor having ... | 08/01/2000 |
| 5938043 | Centrifugal jig An improved jig screen for a centrifugal jig includes a recovery zone and a stratification zone adjacent to one another. The stratification zone is constructed to prohibit outward radial passage of slurry particles while permitting fluid pulsations to be ... | 08/17/1999 |
| 5301810 | Method and apparatus for removing plastic from wood chips Apparatus and process for removing unwanted foreign material from particulate material. The apparatus and process find particular application in the pulp and paper industry to remove contaminating plastic material from wood chips. The apparatus includes a... | 04/12/1994 |
| 5301811 | Apparatus for the separation of grain material and the sorting out of heavy inclusions from grain material An apparatus for separating grain material and for sorting out heavy inclusions from a product flow, particularly stones from gain material, in which the product flow is fed to an inclined layering table and guided so as to be substantially layered thereo... | 04/12/1994 |
| 5183161 | Process and apparatus for separating grain mixture Process and apparatus for separating grain mixture, e.g. for separating heavy inclusions, such as stones (28), from grain product, in which the product is guided via an inclined oscillating layering table surface, through which air flows, so as to be subs... | 02/02/1993 |
| 5057211 | Benefication apparatus and process for land and seabed mining A mineral benefication apparatus having a housing, including opposed stratification hoppers arranged at its lower periphery. Particulate material and water are introduced separately into the housing, which is then oscillated to separate a portion of the p... | 10/15/1991 |
| 4995973 | Modular longitudinal spray finisher A juice processing module is provided in a raw juice stream to aid in the separation of the juice stream into clarified juice and pulpy juice. Raw juice is forced through directed orifices at a separating screen carried in a containment housing. Juice out... | 02/26/1991 |
| 4946584 | Hydraulic product separator A product separator having a flotation tank through which a quantity of product is passed in a flow of water. A shaped duct having a horizontal capture leg and an upwardly inclined discharge leg is connected into the floor of the tank so that the entrance... | 08/07/1990 |
| 4865722 | Method and apparatus for separation using fluidized bed A separator suitable for processing agriculture products in a fluidized bed flowing through an inclined trough under the influence of gravity. The fluidization medium is recirculated from the output end of the trough back to the input end thereof using a ... | 09/12/1989 |
| 4861464 | Method and apparatus for separation using fluidized bed A gas is forced upwardly through a fluidization medium, such as sand, producing a fluidized bed which flows under the influence of gravity through an inclined trough. The separation of the side walls of the trough decreases in the direction of flow of the... | 08/29/1989 |
| 4857177 | Dry separation of solids Mixed scrap metal pieces 6 are sorted in a fluidised hindered settler containing sand, through which the pieces settle at a differential rate. The sand is fluidised by air from 20 and vibration-driven around a circular trough 2. A depthwise partition 14a ... | 08/15/1989 |
| 4826018 | Mineral fines separation machine A mineral slurry processing machine for recovering gold from raw fines. An elongated, rigid skid supports a frame plate coupled thereto by vibration transmitting bearings. An inclined processing ramp is adjustably mounted to the plate. An endless belt ent... | 05/02/1989 |
| 4781822 | Spiral separator A multi-start spiral separator for separating particles in a stream of such particles according to their respective densities and/or sizes comprises a plurality of substantially helical troughs arranged around a common axis which is substantially vertical... | 11/01/1988 |
| 4673491 | Process and apparatus for the centrifugal separation of fine-grain mineral mixtures Separating elements (14) arranged about a central shaft (1a) rotate in common about the main axis (A) and individually about their longitudinal axes (B). A centrifugal distributor (6) distributes fine-grain mineral mixture mixed with fluid uniformly to th... | 06/16/1987 |
| 4663031 | Percussion jig The invention relates to a percussion jig in which the chutes for receiving and discharging the material to be separated are each divided into a plurality of individual chute segments arranged spaced from one another so that the spaces between adjacent in... | 05/05/1987 |
| 4574046 | Centrifugal jig for ore beneficiation A centrifugal jig to beneficiate ore by separating a heavier particulate fraction from a lighter particulate pulp. The jig provides a rotor with a vertical cylindrical jig screen rotating in a fluid filled hutch to support a vertical jigging bed. The jigg... | 03/04/1986 |
| 4360424 | Sluice box A sluice box apparatus for recovering heavy material, such as gold, comprises a fine recovery channel and a coarse recovery channel. The recovery channels have receiving ends, riffles and matting for collecting fines of the material. A hopper at the recei... | 11/23/1982 |
| 4310413 | Circular jig Circular jig for gravity separation of minerals, e.g. gold and tin ore, comprising a screen, a grid forming cells over the screen, a central jig box of polygonal, e.g. square shape, pulsating means to cause the jig bed to pulsate and aprons attached to th... | 01/12/1982 |
| 4289355 | Attachment flange for flexible conduit A plate is attachable to a supporting structure such as a wall. Means carried by the plate encircle and hold a flexible conduit passing through the plate and the structure. The conduit is detachably held at adjustably selected positions along the length t... | 09/15/1981 |
| 4279741 | Method and apparatus for centrifugally separating a heavy fraction from a light weight fraction within a pulp material A centrifugal jig receives a pulp material within a rotating cylindrical jig bed for the purpose of separating the pulp into a selected heavy fraction and a lightweight fraction. The jig bed is cylindrical. It is rotated to produce an outward centrifugal ... | 07/21/1981 |
| 4259181 | Stream splitter for spreading particulate material An inlet stream of particulate material is successively split into smaller stream segments. The segments are spread across a conveyor belt in a magnetic or conductivity separator. Inlet and intermediate stages of the splitter include troughs of triangular... | 03/31/1981 |
| 4199441 | Placer mining sluice box apparatus and method A sluice box is disclosed for use in high volume placer mining operations and a method of placer mining is disclosed, which are particularly useful for the recovery of gold from aggregate material. In operation, aggregate material is loaded into an inlet ... | 04/22/1980 |
| 4164467 | Coal washing plant employing a feed equalizer and a critically dimensioned deflector surface in the inlet pipes of a plurality of cyclones A single stage or multi-stage coal washing plant comprises a plurality of bunched cyclones supplied with raw crushed coal water slurry at high solids content and high velocity common from a tank through a distributor line that contains an equalizer for su... | 08/14/1979 |
| 4152257 | Conical concentrator with partial flow combination A wet gravity concentration apparatus with means to divide two streams into four streams of different concentration and means to combine the two streams of intermediate concentration. Two conical concentrators are arranged with a first richer stream flowi... | 05/01/1979 |
| 4068758 | Feed system for a conoidal solids separating system and method of separating Spherically-shaped rolling solids are separated from irregularly-shaped nonrolling solids on the upper outer surface of a conoidally-shaped rotating table whereon most of the spherically-shaped solids roll from the surface of the table and most of the irr... | 01/17/1978 |
| 3951787 | Method and apparatus for separating gold and other heavy materials from ore Apparatus and method for separating heavy materials from ore, the apparatus having a hopper or sluice box open at its top and defining a discharge opening on one side. Spaced, parallel pipes extend across the hopper adjacent, but above, the bottom of the ... | 04/20/1976 |
