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| Number | Title | Issue Date |
| 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 |
| 7246763 | Comminution apparatus A comminution apparatus for reducing a particle size of a material includes a cutting chamber defining an interior volume, wherein the cutting chamber includes first and second member forming an angle therebetween. Each of the first and second members include a plur... | 07/24/2007 |
| 7195183 | Method of processing composite wastes A method or processing composite waste including combustibles and incombustibles has a press process for pressing the composite waste, a dry distillation process for performing dry distillation on the pressed composite waste, a shredding process for shredding the co... | 03/27/2007 |
| 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 |
| 7165680 | Selective flotation agent and flotation method A new reagent for the application in the preparation of mineral raw materials, mainly sulphide and oxyde mono- and polymetallic ores of non-ferrous metals, which are used as a corrosion inhibitor of the equipment and grinding bodies and as a selective collector of t... | 01/23/2007 |
| 7162785 | Method of recycling a process cartridge The recycling of metal materials is performed by efficiently recovering the metal materials from component materials of a process cartridge. To achieve this object, there is provided a method of recycling a process cartridge containing a toner, wherein in a crushing... | 01/16/2007 |
| 7107661 | Method of recycling printed circuit board The present invention provides a method and apparatus of recycling a printed circuit board for separating and retrieving a metallic material, which includes a printed metallic material, and an insulating material, both composing the printed circuit board. Both the m... | 09/19/2006 |
| 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 |
| 6986192 | Method for reclamation of precious metals from circuit board scrap The present invention springs from the discovery that mild acids could be utilized to shear undesired metals away from desired precious metals that have been plated onto circuit board runners or contacts. This shearing action occurs at a high rate when metal scrap s... | 01/17/2006 |
| 6951992 | Corona and static electrode assembly A corona and static electrode assembly is attachable to a frame of an existing electrostatic separator and includes a pair of oppositely spaced end panels and an elongate corona support member disposed inwardly of and supported by the respective end panels. The coro... | 10/04/2005 |
| 6944926 | Method for disassembling refrigerator, compressing device, and device for disassembling the same A refrigerant gas is collected and a compressor is removed from a discarded refrigerator, a heat-insulating housing including a heat insulator is cut/processed and separated into a plurality of pieces, and the pieces are compressed/processed by compression rollers o... | 09/20/2005 |
| 6523764 | Method for separating metallic from waste printed circuit boards, and dry distillation apparatus used for waste treatment A method for treating waste printed circuit boards, the method has the steps of: heating up for dry-distilling the waste printed circuit boards having copper foil retaining solder in at least a part of the surface, at a temperature of 250° C. or higher; ... | 02/25/2003 |
| 6508421 | Ore comminution process The invention provides a method and installation for processing heterogeneous value bearing material by pressure comminution. The material is compressed in a bed of particles, at low pressures and at low bulk material densities, and preferably no more tha... | 01/21/2003 |
| 6372173 | Process for production of three-dimensional objects by means of stereolithography Process for production of three-dimensional objects by stereolithography in which a laser hardens particular areas of constantly succeeding layers of resin fluid. Prior to or during laser light action, the particles, which define physical or mechanical qu... | 04/16/2002 |
| 6341739 | Processing of ceramic materials A process for treating a nitride-containing ceramic material which includes the following steps: (1) comminuting the material to produce a particulate ceramic material having a particle size distribution such that at least 40% by weight of the particles h... | 01/29/2002 |
| 6336601 | Method for separating metallic material from waste printed circuit boards, and dry distillation apparatus used for waste treatment A method for treating waste printed circuit boards, the method has the steps of: heating up for dry-distilling the waste printed circuit boards having copper foil retaining solder in at least a part of the surface, at a temperature of 250° C. or higher; ... | 01/08/2002 |
| 6308903 | Centrifugal tire rubber and steel separation Apparatus and method for processing used vehicle tires that separates the steel metal from the rubber and other non-metallic materials for recycling. The tire is rotated at sufficient speed to force the materials outwardly by centrifugal force. Heated bla... | 10/30/2001 |
| 6299726 | Method for making paper nuggets from waste paper There is provided a stock of paper nuggets for manufacturing composite building materials, wherein the stock of paper nuggets comprises a large portion of paper nuggets each having a thick mass, a twisted core and a tailed configuration. This stock of pap... | 10/09/2001 |
| 6300402 | Compositions created by the separation and isolation of the metallic and non-metallic constituent components of printed wiring assemblies and printed wiring boards An apparatus separates a substantially metallic portion from a substantially non-metallic portion or constituent components of at least one electrical product, comprising a plurality of crushing machines, such as a first crushing machine and a second crus... | 10/09/2001 |
| 6296817 | Process for recycling waste aluminum dross Disclosed is the recycling of aluminum dross. Aluminum dross is crushed into particles which are size-classified on the basis of 1 mm. The aluminum dross particles equal to or smaller than 1 mm in size are leached with an aqueous sodium hydroxide solution... | 10/02/2001 |
| 6199779 | Method to recover metal from a metal-containing dross material A process is provided for recovering metal from metal-containing waste or dross. The process generally includes the steps of comminuting the dross, and then classifying the comminuted dross into a metal enriched large size fraction and salt enriched small... | 03/13/2001 |
| 6177056 | Process for recycling lead-acid batteries A process for recovery of substantially all the sulfur in a spent lead-acid battery as Na2 SO4 is disclosed. The process comprises (a) breaking the batteries to remove the acid, (b) separating the plastic from the lead bearing materi... | 01/23/2001 |
| 6168642 | Industrial utilization of garbage with effective recycling and with optimization in energy production A recycling process for garbage containing a high proportion of paper where printed paper is first separated from the garbage. The garbage is then into pieces and light and heavy components are separated out in a classification tank. The remaining organic... | 01/02/2001 |
| 6164571 | Recovery of precious metals from circuit boards This invention is based upon the unexpected discovery that the crosslinks in thermoset plastics can be broken by heating to a temperature of at least about 150° C. under a pressure of at least about 3.4×106 Pascals in the presence of 2-butano... | 12/26/2000 |
| 6123277 | Process and device for making use of plastic-coated or sheathed wiring and waste wire for the separate recovery of metal and pure recyclable plastic The invention relates to a method for the recycling of plastic-coated cable residues, which comprise a metal core and a plastic jacket, wherein the metal parts are separated from the jacket and are separately recovered. The cable residues are communited a... | 09/26/2000 |
| 6119866 | Process and device for separation of wanted materials from product mixes which contain floating/absorbent material and metals with a ferromagnetic content Process and device for separation of wanted materials from product mixes which contain floating/absorbent material and metals having a ferromagnetic content, particularly from ink cartridges by means of the following steps: coarsely comminuting the produc... | 09/19/2000 |
| 6117671 | Method and system for integrated solid waste collection and management Solid waste management has been primarily based on collection of solid waste and placing most of it in a landfill. Present invention eliminates a need for large landfills by integrating collection and transportation of solid waste with separation, treatme... | 09/12/2000 |
| 6102311 | Working method of crushing and separating waste substance of weather strip and apparatus therefor A waste substance is crushed and separated into a crushed waste metallic substance and a crushed waste non-metallic substance by the crushing in the fine adjustment in mm unit and striking by hammers, and then discharged out of a shredder through box-shap... | 08/15/2000 |
| 6089479 | Method for treating waste printed circuit boards with molten mixture of inorganic salts A method for treating waste printing circuit boards with molten mixture of inorganic salts comprising actions of: (1) putting the circuit boards into the molten inorganic salts contained in a treating furnace; (2) crushing and stirring for copper foil of ... | 07/18/2000 |
| 6086000 | Shredder dust treatment process A preferred shredder dust treatment process which includes: (1) a step of executing a first crushing; (2) a step of separating and recovering metals from the first crushed product; (3) a step of a second crushing; (4) a step of separating and recovering m... | 07/11/2000 |
| 6082641 | Dross processing Apparatus and method for concentrating metallic aluminum from dross comprising a system in which dross is repeatedly and continuously passed through an impact type mill to mill the material and to enable the metallic aluminum concentrates to be separated ... | 07/04/2000 |
| 6044978 | Process for recovery of copper, nickel and platinum group metal bearing minerals The present invention provides a process for the recovery of base metal sulfides including chalcocite, chalcopyrite, pentlandite and platinum group metal bearing mineral ores. The process involves passing a slurry of the ore through a reagent conditioning... | 04/04/2000 |
| 6041941 | Reagent consumption in mineral separation circuits A method for reducing both reagent consumption and scale formation in a mineral separation circuit employing sulfoxy compounds as reagents. The method involves introducing into the mineral separation circuit a non-oxidizing gas in a quantity sufficient to... | 03/28/2000 |
| 6039274 | Method and apparatus for crushing nonconductive materials A method of crushing or smashing nonconductive materials such as natural ore materials and concretes by a discharge voltage requires a large amount of energy for crushing or smashing. Products produced by crushing or smashing have not been recycled effect... | 03/21/2000 |
| 6032882 | Method for circulation grinding of brittle grinding stock and grinding apparatus therefor In order to enable grinding, with the lowest possible specific energy requirement, of brittle grinding material, in particular moist ores and/or other moist minerals, with the use of an interparticle crushing high-pressure roll press in which the roll sur... | 03/07/2000 |
| 6012659 | Method for discriminating between used and unused gas generators for air bags during car scrapping process To provide a method for easily discriminating used and unused gas generators from among gas generators for air bags separated from used cars in a car scrapping process. A method for discriminating between used and unused gas generators according to the pr... | 01/11/2000 |
| 6007005 | ABS recycling process The present recycling process is accomplished by first shredding used plastics to produce shredded plastics, separating metals and undesirable plastics from the shredded plastics to produce separated plastics, analyzing the material composition of the sep... | 12/28/1999 |
| 5992640 | Precious metals recovery from ores A process for recovery of a precious metals containing mineral from a non-sulphidic gangue mineral comprising: preparing a pulp of a material containing the precious metals containing and gangue minerals; conditioning the pulp with an oxidizing gas containing ... | 11/30/1999 |
| 5957397 | Method for handling mercury containing lamps A process for economically handling spent mercury containing lamps in an efficient manner while protecting the environment against the release of mercury vapors into the atmosphere along with creation of non-toxic recyclable by-product materials therefrom... | 09/28/1999 |
| 5925862 | Process for the recovery of cobalt from ores containing metal sulfides A process for the production of cobalt concentrate from an ore containing metal sulfides including sulfides of lead, zinc, and cobalt. The ore is crushed and subjected to a lead and cobalt flotation to separate the lead and cobalt from the zinc and produc... | 07/20/1999 |
