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| Number | Title | Issue Date |
| 7775371 | Device for the separation of waste materials in accordance with their densities A device for the separation of waste materials in accordance with their densities is provided and includes a vat which is fillable with a fluid for the separation of detritus by means of floatation and decantation. Conveyer belts are provided for the removal of the ... | 08/17/2010 |
| 7497335 | Hydrogravity system and process Hydrogravity separation of a multiple domain solid feedstock is disclosed which comprises granulating the feedstock to produce particles each of substantially a single domain, with each type of particle having a different density. The particles are slurried into a s... | 03/03/2009 |
| 7357259 | Material classifier having a scoop wheel A material classifier for classifying a liquid-solid mixture containing solid material to be separated is provided. The material classifier includes a tank defining a reservoir for receiving the liquid-solid mixture, and a scoop wheel including a plurality of circum... | 04/15/2008 |
| 7341154 | Water bath separator A water bath separator includes a tank for receiving a volume of water for forming a water bath having a top water surface and a light material conveyor path extending from the tank such that an upstream end of the light material conveyor path is closely below the t... | 03/11/2008 |
| 7255233 | Method and apparatus for separating mixed plastics using flotation techniques A method and apparatus are provided for separating mixed plastics using flotation techniques including a first stage initial washing tank for washing of incoming plastics and providing a first separation process and at least one separation module. The first stage in... | 08/14/2007 |
| 7225757 | Method of cleaning soiled bedding material in barns A method of cleaning bedding sand soiled with animal manure removes the bedding sand from an animal bedding area. An aqueous slurry of the bedding sand is made. The slurry is subjected to cyclonic action so as to separate the sand from the manure. The separated sand... | 06/05/2007 |
| 7111738 | Technique for enhancing the effectiveness of slurried dense media separations Methods, systems, and media for use in separating mixtures. A slurry including a separation liquid and one or more particulate media materials is provided. A classification separation is performed on the slurry to produce a classified media having a controlled parti... | 09/26/2006 |
| 7070624 | Process for separating polyester from other materials The present invention is directed to a process for separating polyester, and particularly polyethylene terephthalate, from various contaminants and impurities. In general, the process includes the steps of mixing materials containing polyester with an alkaline compo... | 07/04/2006 |
| 7007806 | Method and apparatus for separating a protein membrane and shell material in waste egg shells A method and apparatus for abrading the membrane portion of waste egg shells from the hard mineral portion thereof, is provided. The linking structure between the membrane and shell is initially abraded such that the membrane particles and shell particles can be pas... | 03/07/2006 |
| 6953123 | Pre-separation of feed material for hindered-bed separator A pre-separator feed well for use with hydrous slurry feed is provided in a hindered-bed separator that includes an elongate body defining an interior space with upper and lower portions. The feed well is elongate and includes a vertically adjustable conical plate a... | 10/11/2005 |
| 6719144 | Method of separating oxide from dross, device for separating oxide from dross, and jet solder tank When a printed board is soldered by a dipping method, a great deal of dross is generated on a jet solder tank. The dross is a mixture of melted solder and oxide. A worker takes out the dross from the jet solder tank, and throws it away. Thus, a large amount of the s... | 04/13/2004 |
| 6527124 | Pistachio blanks separator An apparatus for separating blank pistachio shells and other debris from pistachio nuts includes a flotation tank, a weir and discharge channel, a conveyor within the flotation tank and a pair of counter-rotating rollers for squeezing floating items and f... | 03/04/2003 |
| 6423532 | Refuse-treatment method and apparatus A method of treating household refuse wherein selection, communication, etc., the fraction of the total refuse containing biodegradable organic dry matter is delivered to an anaerobic fermentation process. Anaerobic fermentation is carried out until all t... | 07/23/2002 |
| 6383282 | Pseudophasic extraction method for the separation of ultra-fine minerals An improved aqueous-based extraction method for the separation and recovery of ultra-fine mineral particles. The process operates within the pseudophase region of the conventional aqueous biphasic extraction system where a low-molecular-weight, water solu... | 05/07/2002 |
| 6273264 | Device and method for separating particles contained in a fluid A device for separating dense particles contained in blood or one or more proteins contained in blood plasma by utilizing a separating arrangement. The separation arrangement includes a feed duct, at least two discharge ducts, a pump for producing a press... | 08/14/2001 |
| 6264040 | Hindered-bed separator device and method A process and a structure is described for separating particles in a fluid medium based on a difference in settling velocity. The feed is introduced tangential into the separation zone. The tangential feed system includes a transition box to reduce flow v... | 07/24/2001 |
| 6264039 | Method for precious metal recovery from slag The present invention, therefore, provides stage crushing method for recovering precious metals from slag produced by a coal burning furnace or boiler comprising: a plurality of crushing steps, wherein each crushing step produces slag particles having suc... | 07/24/2001 |
| 6235107 | Method for separating mixture of finely divided minerals and product thereof A method for the treatment of a kaolin clay crude to separate by selective flocculation impurity particles contained in the crude from finely divided kaolinite particle contained in the crude, comprising: (a) forming said crude into a dispersed aqueous slurry ... | 05/22/2001 |
| 6213306 | Process and facility for treating and sorting recyclable waste materials The invention refers to a procedure and an installation for the pure, according to sort, processing of recoverable material refuse, with a selection of heavy disruptive materials, with a crushing process for the remaining raw refuse, with segregating proc... | 04/10/2001 |
| 6202855 | Process for the selection of particles of a preselected size from a particulate pharmaceutical product An invention provides a process for the selection from a particulate pharmaceutical product of particles of a preselected size, said process comprising (i) obtaining a substantially homogeneous suspension of said particulate pharmaceutical product in a fl... | 03/20/2001 |
| 6176376 | Method and apparatus for separating a protein membrane and shell material in waste egg shells A method and apparatus for separating the membrane portion of waste egg shells from the hard mineral portion thereof, so that each can be used or further processed as desired, thereby addressing the environmental and economic issues associated with dispos... | 01/23/2001 |
| 6158591 | Method and apparatus for extracting plant resins An improved method and apparatus for extracting resin from plant material. Conventionally, plant resins, which are useful in many products, are extracted using chemical solvents, which may alter the extract, and may produce a by-product or residue that ma... | 12/12/2000 |
| 6142311 | Process for controlling a sand and gravel sorting and sizing device In a process for controlling the product composition in an apparatus for sizing and sorting mineral raw materials, wherein the apparatus comprises at least one chamber, a sizing separation of the sand fraction into a sand product mass and into a micro par... | 11/07/2000 |
| 6068693 | Method for separating mixture of finely divided minerals and product thereof A method of enhancing the brightness and increasing the yield of a kaolin clay by optimizing the removal of the titania and mica impurities in the clay and the amount of clay remaining in the slurry is disclosed. The method is a selective flocculation pro... | 05/30/2000 |
| 6026966 | Ferrohydrostatic separation method and apparatus The invention concerns a ferrohydrostatic separation method in which the apparent density of a ferrofluid used to separate materials according to density is controlled by a magnetic field generated by a solenoid.... | 02/22/2000 |
| 5950839 | Method and apparatus for the separation of manure and sand A method and apparatus (10) for separating a mixture of materials having different sizes and densities is described. The apparatus includes a trough (12), a dispersing and conveying screw (40) and fluid distribution manifolds (26 and 28). The screw has a ... | 09/14/1999 |
| 5947299 | Hydraulic reactor and classifier for solid particles with ultrasonic application The present invention relates to a hydraulic reactor and classifier, with ultrasonic application for a continuous process of separation and recovering minerals or other type of materials or for the production of chemical compounds. It comprises a body of ... | 09/07/1999 |
| 5938833 | Chemical process for fractionating mineral particles based on particle size This invention pertains to the use of a combination of polyvalent cations, clay dispersant and high molecular weight anionic polymer to preferentially remove colloidal fines (slimes) from a kaolin slurry, leaving the remainder of the kaolin in the slurry ... | 08/17/1999 |
| 5925250 | Concentrator & Filter having protected end portion A fecal parasite concentrator which has a cylindrical body (20) with connections for a sample vial (24) on one end having a protective recess (27) for receiving the sample vial and a centrifuge tube (28) on the other. An integral filter (36) is disposed w... | 07/20/1999 |
| 5894996 | Method and apparatus for reclaiming plastic A method and apparatus for reclaiming component plastics from a mixture of plastics wherein differentials in specific gravity serves as the segregation mechanism. The method includes the steps of: (1) fragmenting the plastic articles such that the resulti... | 04/20/1999 |
| 5875899 | Apparatus for classifying objects by sedimentation In an apparatus for classifying objects by sedimentation having a straightening passage, capable of being prevented adhesion of bubbles to the straightening passage, and capable of being prevented a sample supplying error generated caused by a closed samp... | 03/02/1999 |
| 5720394 | Sample supply unit for settling classification system A tube-type sample supplying portion 1 is provided upright above a classification tank 2. A sample inlet pipe 5, which communicating with a culture tank 3, is connected to the lower part of the sample supplying portion 1. An outlet pipe 6, which communica... | 02/24/1998 |
| 5556544 | Concentrator & filter A fecal parasite concentrator which has a cylindrical body (20) with connections for a sample vial (24) on one end and a centrifuge tube (28) on the other. An integral filter (36) is disposed within the body at right angles coaxially covering the cross se... | 09/17/1996 |
| 5435443 | Method and apparatus for separating mixtures of substances The invention proposes using liquefied carbon dioxide as a separation agent for flotation and/or sedimentation separation, which is particularly suitable for separating foodstuff mixtures such as meat components, because it can be maintained in liquid pha... | 07/25/1995 |
| 5267653 | Sorting method and sorting device The present invention provides a sorting method and a sorting device for sorting particles according to their settling velocities in a fluid medium. According to one aspect, the sorting method comprises admitting particles into a longitudinally vertically... | 12/07/1993 |
| 5246116 | Method and apparatus for separation and recovery of the components from foil-containing laminates A method for the separation and recovery of foils, in particular aluminum foils, and the other components in waste foil-containing laminates includes subjecting the waste laminates to agitation in a heated polyalkylene glycol polymer solution. The thus he... | 09/21/1993 |
| 5246115 | Process for separating heterogeneous plastic material into homogeneous fractions and apparatus useful to this purpose A process is taught for separating heterogeneous plastic material into homogeneous fractions, which comprises: a. feeding the plastic material in a triturated form to a first water-containing separation tank to separate the high specific weight products f... | 09/21/1993 |
| 5232606 | Process for recycling of supported or contaminated PVC A method is provided for recovering PVC from a material including PVC and one or more non-PVC components, in which the material is mixed with a sufficient amount of a plasticizer at an effective temperature, preferably in the range of 100°-200° C., to g... | 08/03/1993 |
| 5126058 | Separation of physically co-mingled plastics using a supercritical fluid to facilitate recycling The present invention provides a method for selectively separating co-mingled materials of different densities by selective density flotation of the materials in a fluid in the vicinity of its critical point. The extermely high compressibility of a fluid ... | 06/30/1992 |
| 5085785 | Process for purifying psyllium husk using liquid fluorinated hydrocarbons with different densities as separation means The present invention relates to processes for purifying impure psyllium husk using fluorinated hydrocarbons and the psyllium husk having greater than about 99% purity prepared by these processes.... | 02/04/1992 |
