Famous Patents
British merchant Peter Durand invented the tin can in 1810.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7438187 | Free wire reclaimer with improved magnetic separation A magnetic separation apparatus for separating metallic material from a granulated stream of mixed metallic and nonmetallic material comprises a vibratory conveyor having a trough assembly mounted on a suspension system and coupled to a motor for causing the suspens... | 10/21/2008 |
| 7389880 | Unit and method for processing of shredder residues and uses of a sand fraction produced thus A method and system are for sorting shredder residues of metal-containing wastes, in particular of body shells Shredder residues are separated into a shredder light fraction and a non-ferromagnetic fraction (shredder heavy fraction). During the sorting of the shredd... | 06/24/2008 |
| 7367456 | Air jig for separation of minerals from coal An improved air jig apparatus and method is disclosed in which a dry magnetic separator is used to separate paramagnetic and ferromagnetic minerals from the dust component of coal cleaned with the air jig. The cleaned product of the dry magnetic separator is combine... | 05/06/2008 |
| 7328808 | Apparatus for sorting wood chips in separate fractions The invention relates to an apparatus for sorting wood chips, said apparatus having a feeder for supplying the wood chips onto a sloping support surface so that the chips slide along the support surface and over a slit extending across the support surface. A flow of... | 02/12/2008 |
| 7168568 | Apparatus and method for isolating materials Apparatus is provided for separating non-magnetic mineral values from a source containing magnetic material and non magnetic material. The apparatus includes first and second conveyers in overlying relation which counter-rotate relative to one another. One of the co... | 01/30/2007 |
| 7012209 | Method of gold separation and gold separation device A method of collecting gold by flowing water over a gold collecting medium located in a sluice to induce a positive surface charge on the gold collecting medium. Feeding gold laden material into the sluice with the flowing water to induce a negative surface charge o... | 03/14/2006 |
| 6994219 | Method for magnetic/ferrofluid separation of particle fractions A particulate feed comprising a first particle type and a second particle type is separated by providing a separation apparatus having a separation vessel having a top and a bottom, and wherein the separation vessel includes inwardly sloping side walls. A magnet str... | 02/07/2006 |
| 6968956 | Separation apparatus and methods A separation apparatus and method for use in separating magnetic material from non-magnetic material that includes the use of a magnetic grid, e.g., a permanently magnetic grid, which defines a plurality of openings. The grid assists in preventing magnetic material ... | 11/29/2005 |
| 6814240 | Installation for cleaning wood-containing material The invention relates to an installation for cleaning wood-containing material, comprising the following features: with a feeding zone; with a pre-sifter station with a magnetic separator comprising a magnetic roller; ... | 11/09/2004 |
| 5927508 | Method and apparatus for recovering fine gold from low grade ores Recovery of gold fines from gold-bearing ores is achieved by flowing an aqueous slurry of particulate gold-bearing ore over a sluice supporting a mat of magnetically susceptible particulate material, which preferably includes the magnetite content of the ... | 07/27/1999 |
| 5470554 | Benefication of saline minerals A process is provided for recovering a saline mineral from an ore containing the saline mineral and impurities. The process generally comprises the steps of separating a first portion of impurities from the ore by density separation, electrostatically sep... | 11/28/1995 |
| 5193687 | Gravity separators having metallic troughs, especially Humphreys spirals A gravity-magnetic separator (10) for concentrating magnetic materials (28), particularly iron, is disclosed. The preferred separator is a cast-iron Humphreys spiral retrofitted with powerful rare earth magnets (22) beneath its separating surface (14), th... | 03/16/1993 |
| 5191981 | Specific gravity metal separator A material separator that magnetically separates the desired material from a slurry as the slurry travels along one or more passageways between a hopper and a discharge chute. Riffle lines can also be incorporated in such passageways to increase the separ... | 03/09/1993 |
| 5133505 | Separation of aluminum alloys A method and an apparatus for separating shredded particles, for instance particles of used beverage cans, into respective fractions that contain greater amounts of one of a plurality of alloys from which the cans have been made. The method includes scree... | 07/28/1992 |
| 5071541 | Method and apparatus for sorting a mixture of particles A method and apparatus for sorting a mixture of particles containing a first group of particles of substantially uniform size and density and a second group of particles of substantially the same size as the particles of the first group and of different d... | 12/10/1991 |
| 5039426 | Process for continuous particle and polymer separation in split-flow thin cells using flow-dependent lift forces A process for continuous particle and polymer separation comprising injecting a stream of carrier fluid containing the material to be separated into the inlet end of a thin channel, adjusting the flow rate to a sufficiently high level that flow-dependent ... | 08/13/1991 |
| 4943368 | Nonmetallic abrasive blasting material recovery process including an electrostatic separation step An electrostatic waste separation process for abrasive blasting residues containing an abrasive media and a hazardous material such as lead-based paint. A preconditioning stage as well as a postconditioning stage is used in addition to the electrostatic s... | 07/24/1990 |
| 4894146 | Thin channel split flow process and apparatus for particle fractionation A thin channel split flow process for particle fractionation which effects a rapid and efficient separation of the particles comprising continuously introducing two or more fluid substreams of different composition into separate inlet ports of a thin encl... | 01/16/1990 |
| 4737268 | Thin channel split flow continuous equilibrium process and apparatus for particle fractionation A thin channel split flow process for particle fractionation which effects a rapid and efficient separation of the particles comprising introducing a stream of fluid containing the particles to be separated into the inlet end of a thin enclosed channel wh... | 04/12/1988 |
| 4671867 | Method and means for treating foundry sands and the like The subject matter of the invention mainly relates to the technical areas of foundry, manufacture of parts by casting metal in moulds. The process consists in that after moulding the parts and stripping them from the moulds which were broken, during a first cy... | 06/09/1987 |
| 4659457 | Gravity-magnetic ore separators and methods A gravity-magnetic ore separator for concentrating magnetic or weakly magnetic minerals having a relatively high specific gravity is disclosed. The ore separator utilizes codirectional magnetic and gravitational forces to achieve separation capabilities i... | 04/21/1987 |
| 4565624 | Gravity--magnetic ore separators A gravity-magnetic ore separator for concentrating magnetic or weakly magnetic minerals having a relatively high specific gravity is disclosed. The ore separator utilizes codirectional magnetic and gravitational forces to achieve separation capabilities i... | 01/21/1986 |
| 4546552 | Fluid induced transverse flow magnetically stabilized fluidized bed Solids comprising a magnetically stabilized fluidized bed are transported in a direction transverse to the flow of the fluidizing fluid exiting the bed by contacting at least a portion of said solids with fluidizing fluid which enters the bed with a veloc... | 10/15/1985 |
| 4512879 | Process for producing a metalliferous concentrate from a particulate feed material A concentrate containing precious metals is produced from a particulate feed material containing particles of various sizes by a size fractionation step, a gravity separation step performed on each size fraction separately, a magnetic separation step and ... | 04/23/1985 |
| 4388179 | Magnetic separation of mineral particles from shale oil Oil shale mineral solids are separated from a fluid in a process comprising heating the mineral solids to at least the magnetic transformation temperature of a portion of the solids and thereafter magnetically separating mineral solids from the feed. High... | 06/14/1983 |
| 4370225 | Dry magnetic separators for increased recovery or ore at high belt speeds This invention relates to improvements in a dry magnetic separation system for increasing the recovery of magnetic ore from the feed material. The system includes a separator which has a magnetic head-pulley assembly mounted in one end of an endless belt ... | 01/25/1983 |
| 4363722 | Process and apparatus for treating titanium machining scrap A process and apparatus is disclosed for treating titanium machining scrap to remove both magnetic and non-magnetic high density inclusions, particularly bits or pieces of tungsten carbide broken from the cutting tool or tools associated with the scrap. I... | 12/14/1982 |
| 4342647 | Treatment of scrap Uncured rubber scrap may be segregated from metal and fiber contaminants by the method of first embrittling the scrap by immersion in a liquid cryogen, then impacting the embrittled rubber and magnetically removing metal, and then milling the remainder. G... | 08/03/1982 |
| 4342640 | Magnetic separation of mineral particles from shale oil Oil shale mineral solids are separated from a fluid such as retorted shale oil by heating the mineral solids to a temperature above about 480° C. and above the magnetic transformation temperature of at least a portion of the solids. The temperature of th... | 08/03/1982 |
| 4252638 | Method for the desulfurization of coal A method for reducing the sulfur content of coal which involves an integrated, continuous process including the steps of grinding the coal in a dry state, activating the ground coal to increase substantially the magnetic susceptibility of the pyrite conta... | 02/24/1981 |
| 4193767 | Particulate mineral separation process A method used in conjunction with prospecting or mineral exploration of sedimentary deposits containing a minute amount of an economic mineral is described. The method is applied to a bulk sample of a deposit and generally involves the steps of washing an... | 03/18/1980 |
| 4111797 | Method and apparatus for separating particulate materials of different specific gravities A movably mounted receptacle having perforations therein with hollow spigots connected to the receptacle in registry with the perforations and projecting substantially downwardly therefrom, these spigots being moved through a bed of the particulate materi... | 09/05/1978 |
