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| Number | Title | Issue Date |
| 7351320 | Multiple frequency electrostatic coalescence A method of augmenting the separation of immiscible heavier and lighter components of an emulsion including the steps of conducting the emulsion into a treatment vessel, providing an AC voltage source, employing from the source an AC voltage of at least one selected... | 04/01/2008 |
| 7341658 | Recovery of heavy minerals from a tar sand A process for recovering heavy minerals (e.g., titanium minerals such as TiO2) from a feedstock comprising tar sands or a tar sands-derived solids fraction. The feedstock comprises bitumen and heavy minerals. The process comprises the steps of: (i) contac... | 03/11/2008 |
| 7314139 | Process for sulphide concentration The present invention relates to a gravity/flotation circuit where a mineral stream, such as a flotation rougher or cleaner concentrate, undergoes a two stage size separation wherein: i) the screen of the first stage provides a coa... | 01/01/2008 |
| 7172143 | Method and plant for separating polymeric materials A method for recycling polymeric materials, including a mechanical separation step (B), a first density separation step (C), an intensive cleaning step (E), and a second density separation step (G, V) is described. Additional separation steps, such as a third densit... | 02/06/2007 |
| 7063213 | Mediating electrostatic separation Methods, systems and media for separating polymer mixtures. A mixture including polymeric components is provided. A particulate media is added to the mixture, where the particulate media can selectively mediate a triboelectric charging of the polymer mixture. The me... | 06/20/2006 |
| 7014132 | Method and plant for separating polymeric materials A method for recycling polymeric materials, including a mechanical separation step (B), a first density separation step (C), an intensive cleaning step (E), and a second density separation step (G, V) is described. Additional separation steps, such as a third densit... | 03/21/2006 |
| 7006778 | Detoning apparatus and method A toner separation apparatus includes a target, an inlet through which toner laden carrier enters to strike the target, an exit for carrier particles below the target, and an exit for toner particles downstream of the target. A filter can be positioned between the t... | 02/28/2006 |
| 6921028 | Dispersing apparatus Disclosed is a dispersing apparatus comprising a container body; a sealable lid detachable from the container body; a mixing shaft supported by and extending from the lid and having a mixing member; an enclosing member supported by the lid or the mixing shaft and su... | 07/26/2005 |
| 6805242 | Method of reducing phosphate ore losses in a desliming process The specification describes one or more embodiments of the present invention, which relates to a method of reducing phosphate ore losses in a desliming process. A phosphate ore preparation slurry is directed to a desliming unit; surfactants and/or an organic polymer... | 10/19/2004 |
| 6662951 | Process for extracting and purifying naturally occurring zeolite A process for extracting and purifying naturally occurring zeolite from ores in the presence of other mineral phases by using mechanical dispersion and differential suspension to remove a majority of the clay content of the ore. The process continues by r... | 12/16/2003 |
| 6607248 | Low elevation coal processing plant The present invention is to an improved method of constructing a coal processing plant and an improved arrangement therefore. The overall cost of constructing a coal processing plant can be significantly reduced by the arrangement of the processing to ter... | 08/19/2003 |
| 6412642 | Method of applying marking to metal sheet for scrap sorting purposes Application of surface marking to metal stock, such as aluminum sheet, prior to or during scrap-generating manufacturing operations, to provide a detectable mark on pieces of manufacturing scrap derived from the marked sheet and commingled with scrap of o... | 07/02/2002 |
| 6206199 | Method and an apparatus for recycling different components in a multiple layer material In order to recover the various components of multiple layer materials, a method uses a refiner or disperser including mutually opposing rotating discs having material engaging surfaces or elements such as teeth. The method includes: adjusting a gap betwe... | 03/27/2001 |
| 6145666 | Cleansing contaminants from a heterogeneous material using a sorption agent There is described a process for cleansing contaminants, such as oil, PCB, PAH, heavy metals and the like, from a heterogeneous material, such as sand, gravel, earth, oil gravel, asphalt, drill borings ("kaks") and the like. More specifically the inventio... | 11/14/2000 |
| 6126014 | Continuous air agglomeration method for high carbon fly ash beneficiation The carbon and mineral components of fly ash are effectively separated by a continuous air agglomeration method, resulting in a substantially carboree mineral stream and a highly concentrated carbon product. The method involves mixing the fly ash compri... | 10/03/2000 |
| 5653867 | Method for the separation of high impact polystyrene (HIPS) and acrylonitrile butadiene styrene (ABS) plastics An improved method is provided for separating acrylonitrile butadiene styrene (ABS) and high impact polystyrene (HIPS) plastics from each other. The ABS and HIPS plastics are shredded to provide a selected particle size. The shredded particles of the ABS ... | 08/05/1997 |
| 5566832 | Method for sorting plastics from a particle mixture composed of different plastics A method for separating plastic particles by types from a particle mixture of plastics of different types by flotation. The plastic particles are initially processed by a type-dependent change in their wetting behavior in such a manner that the various ty... | 10/22/1996 |
| 5489028 | Method of removing foreign material from a row of fiber bales and a bale opening machine therefor The bale opening machine is provided with a detection unit upstream of the bale opener for detecting the presence of foreign material at the surface of the fiber bale. In addition, an extraction unit is mounted adjacent the bale opener for removing the de... | 02/06/1996 |
| 5397066 | Separation of plastic materials Separation of a mixture of plastic materials by separating the plastic mixture according to particle size, and introducing plastic of similar size particles into a vertical fluidized bed column having an upwardly flowing gaseous stream therein. The flow r... | 03/14/1995 |
| 5358120 | Selective separation of finely-divided minerals by addition of selective collector reagent and centrifugation Separation of impurities from kaolin clay is accomplished by conditioning a dispersed aqueous pulp of the clay with an anionic flotation collector, followed by centrifugation or the like to cause the impurities to settle from a dispersed pulp of the clay ... | 10/25/1994 |
| 5328594 | Magnetic separation of old from new cracking catalyst by means of heavy rare earth "magnetic hooks" This invention relates to an improved catalytic process for carrying out heavy hydrocarbon conversion, usually, but not necessarily, in the presence of nickel and vanadium on the catalyst and in the feedstock, by catalytic cracking gas oils and heavy carb... | 07/12/1994 |
| 5311997 | Selective separation of finely-divided minerals by addition of selective collector reagent and centrifugation Separation of impurities from kaolin clay is accomplished by conditioning a dispersed aqueous pulp of the clay with an anionic flotation collector, followed by centrifugation or hydrocloning to cause the impurities to settle from a dispersed pulp of the c... | 05/17/1994 |
| 5244155 | Solid-solid separations utilizing alkanol amines The separation of silica or siliceous gangue from one or more desired minerals in an aqueous slurry via mechanical apparatus is improved by the addition of a small amount of an alkanol amine to the slurry. Examples of separation techniques benefiting from... | 09/14/1993 |
| 5161694 | Method for separating fine particles by selective hydrophobic coagulation A process of selectively agglomerating coal in an aqueous environment while leaving the mineral matter dispersed has been developed. This process is autogenous for hydrophobic particles in that neither an agglomerating agent nor an electrolytic coagulant ... | 11/10/1992 |
| 5147045 | Particulate separations by electrostatic coalescence The use of electrostatic demulsification methods to separate fine particulates of differing surface characteristics is disclosed. In one example, particles of hydrophobic coal and hydrophilic kaolin clay, each of nominal 3.5 micron mass mean particle diam... | 09/15/1992 |
| 4843959 | Producing piles of serially-indexed papers from a plurality of unindexed imprints Sheets or a web of bank note imprints are advanced in single file through an indexing station where a unique identifying index is applied to each imprint. The indexed imprints are stacked as a pile of strips, downstream of the indexing station, and the pi... | 07/04/1989 |
| 4775627 | Coal desulfurization using bacteria adaptation and bacterial modification of pyrite surfaces The invention relates to the desulfurization of high sulfur coal, and specifically to the removal of pyrite from high sulfur coal via separation processes based on relative hydrophobicity. The surfaces of the pyrite particles are modified so as to be more... | 10/04/1988 |
| 4767506 | Electrostatic treatment of milled crude potash salts containing kieserite A process is disclosed for the preparation of milled crude potash salts containing kieserite, whereby the crude potash salt is conditioned at first with a chemical conditioning agent and subsequently with an auxiliary conditioning agent, whereupon the cru... | 08/30/1988 |
| 4744889 | Separation of viscous hydrocarbons and minerals particles from aqueous mixtures by mixtures by oleophilic adhesion A method and apparatus for separating an oil phase from an aqueous phase by means of a rotating drum apparatus containing one or more compartments, each being partially filled with oleophilic free bodies. When containing two or more compartments, they are... | 05/17/1988 |
| 4686032 | Automatic method for separating and cleaning silicon carbide furnace materials Method of automatically separating and cleaning silicon carbide furnace materials using magnetic separation techniques. In the method of the invention, crushed or particulate silicon carbide furnace materials are mixed with a magnetic powder. The lower gr... | 08/11/1987 |
| 4677910 | Process for processing security paper webs or security paper sheets to form bundles of security papers Processing is based on print carriers in the form of security paper webs or security paper sheets, containing security paper prints which are arranged in the manner of matrices in transverse rows and longitudinal rows and on which spoilt notes are identif... | 07/07/1987 |
| 4657666 | Magnetic flotation A method for mineral upgrading or concentration, characterized in that a gangue-associated mineral having a hydrophobic surface and being in particulate form, is contacted with particles of a magnetic material also having a hydrophobic surface, whereby th... | 04/14/1987 |
| 4605420 | Method for the beneficiation of oxidized coal A process for modifying the surface of oxidized coal, said process comprising subjecting coal having oxidized surfaces to high shear agitation in water followed by desliming the resultant aqueous coal mixture.... | 08/12/1986 |
| 4600505 | Single float step phosphate ore beneficiation A flotation process is taught for beneficiating phosphate ores containing, as impurities, silica and alkaline earth metal carbonates, particularly dolomite. Using a single flotation stage, the phosphate values are recovered in the overflow and quite unexp... | 07/15/1986 |
| 4588498 | Single float step phosphate ore beneficiation A flotation process is taught for beneficiating phosphate ores containing, as impurities, silica and alkaline earth metal carbonates, particularly dolomite. Using a single flotation stage, the phosphate values are recovered in the overflow and quite unexp... | 05/13/1986 |
| 4585548 | Recovery of metal values from mineral ores by incorporation in coal-oil agglomerates Gold ore, or any other mineral treated to have a lyophilic surface, (e.g. chalcopyrites), is ground into a slurry in crusher (1) powdered coal and oil are added at location (2), and the mix is conveyed to a contact zone (3), where any micro-agglomerates f... | 04/29/1986 |
| 4540484 | Method and apparatus for separating selected particulate materials from a mixture of liquids and solids A chemical reagent is mixed with the mixture to form a resultant reaction mixture under substantially nonoxidizing or oxygen-free conditions. A continuous movement of the resultant reaction mixture is established through a flotation zone while maintaining... | 09/10/1985 |
| 4529506 | Method for cleaning fine coal A method for cleaning fine coal is provided which includes: mixing the coal with a fluid of such a specific gravity that clean coal particles would float while refuse particles would sink therein, pretreating the coal-fluid slurry by adding a surfactant, ... | 07/16/1985 |
| 4525335 | Method of manufacturing crystalline silicon nitride and method of separation thereof A method of manufacturing silicon nitride whiskers in which a carbon and silicon containing material having a thin configuration and sufficient porosity to permit both the passage of a gas therethrough and to provide spaces for growing whiskers therein is... | 06/25/1985 |
| 4504384 | Trithiocarbonates as ore flotation agents S-Allyl-S'-n-butyl-trithiocarbonate and S-benzyl-S'-n-butyltrithiocarbonate, their use and flotation agents and a process to make these novel compositions are disclosed.... | 03/12/1985 |
