| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 075401000 | Treating multicomponent metal-containing scrap having an integral substrate to separate metal therefrom by temperature modification or chemical process at least one metal remains solid during separation | 22 |
| 20080282842 | Process for Removal of the Catalytic Coating Material From Spent, Defective or Unused Metal Support Catalytic Converters - Process for recovering catalyst coating material from a supporting structure, such as, for example, a catalytic converter assembly having a metal mantle, including contacting the catalytic coating material with a sodium; potassium or ammonium hydroxide-containing compound at an elevated temperature; and rinsing with a liquid and filtering the solid catalyst coating material from the solution. | 11-20-2008 |
| 20090158891 | PROCESS FOR RECOVERING PLATINUM GROUP METALS, RHENIUM AND GOLD - Processing for the extraction of metals consisting of platinum, palladium, iridium, rhodium, osmium, ruthenium, rhenium and gold (PGMRA) includes dissolution of the PGMRA metals from solid materials in an acidic aqueous solution, preferably with a halogen acid sparged with the corresponding halogen element. The acidic solution is then exposed to extraction material of non-cross-linked polyamine composite resin. The bound metal, following washing of the extraction material is eluted from the resin using stronger acidic processes than that provided in the wash of the resin. Conventional extraction by organic solvents or other known techniques is employed to recover the PGMRA metals. Rhodium is separated from the rest of the PGMRA metals either near the beginning or the end of the process. Rhodium is separated by creating hydroxides with the metals in the solution and then reacidifying the metals such that the rhodium remains as aquochlororhodate complexes. Using the binding process to the extraction material leaves only the aquochlororhodate complexes in solution to be recovered. All of the PGMRA metals may be recovered by conventional means such as organic solvents, reduction or precipitation. | 06-25-2009 |
| 20090308203 | METHOD AND DEVICE FOR METAL PURIFICATION AND SEPARATION OF PURIFIED METAL FROM METAL MOTHER LIQUID SUCH AS ALUMINIUM - A method and device for the purification and separation of purified metal from a metal mother liquid having a specific density and comprising one or more foreign element(s). The method includes: providing in a column device a starting material including metal crystals and a metal mother liquid including at least one foreign element; applying a temperature difference between a relatively hot zone at the upper end of the column and a relatively cool zone at the lower end of the column; a separation step wherein at least a part of the metal crystals is separated from the metal mother liquid by rising of the metal crystals to the upper surface of the metal mother liquid; and a further separation step wherein purified metal floating on the upper surface of the metal mother liquid is discharged from the column device. | 12-17-2009 |
| 20090314135 | Cleaning of oil-contaminated solids - The present invention relates to a method for treating of oil contaminated, metal-containing solids, in particular spent catalysts. The solids are cleaned with a dense phase gas and then metal is recovered from the cleaned solids. | 12-24-2009 |
| 20100139456 | REDUCTION TREATMENT APPARATUS AND METHOD OF REDUCTION TREATMENT - A reduction treatment apparatus can include a reduction furnace configured to reduce zinc and/or iron oxide thorough heat treatment of zinc-containing iron oxide or zinc oxide or iron oxide, with a reducing material. The reduction treatment apparatus also has an oxide inlet configured to supply to the reduction furnace the zinc-containing iron oxide or zinc oxide or iron oxide. The reduction treatment apparatus further has a reducing material inlet configured to supply to the reduction furnace the reducing material. The reducing material can comprise at least one of ASR, shredder dust of home electric appliances, waste plastics, PDF, RPF, sludge, oil mud, chips of wood, thread debris, rubber debris, and animal and plant residues. The reduction furnace can be configured to use the reducing material as a heating material and reduce the zinc-containing iron oxide or zinc-oxide or iron oxide without auxiliary fuel. | 06-10-2010 |
| 20110100161 | METHOD FOR PROCESSING AND RECYCLING ZINC-RICH IRON METALLURGY SIDE PRODUCTS - A process for processing metallurgic residue that is obtained from electric steelworks dust, ESD, essentially containing iron and zinc in the form of zinc oxide and zinc ferrites, as well as a processing of the blast-furnace slags, BFS, and a combination with a synergy effect. | 05-05-2011 |
| 20110138964 | SYSTEM AND PROCESS FOR RECOVERY OF CADMIUM TELLURIDE (CdTe) FROM SYSTEM COMPONENTS USED IN THE MANUFACTURE OF PHOTOVOLTAIC (PV) MODULES - A system and associated process are provided for recovering cadmium telluride (CdTe) that has plated onto components, such as components used in the manufacture of photovoltaic (PV) modules. The system includes a vacuum oven configured for maintaining a vacuum and being heated to a temperature effective for sublimating CdTe off of components placed within the oven. A collection member is disposed so that sublimated CdTe generated in the oven diffuses to the collection member. The collection member is maintained at a temperature effective for causing the sublimated CdTe to plate thereon. The collection member is subsequently processed to collect the plated CdTe. | 06-16-2011 |
| 20120024111 | METAL SEPARATION USING A TUNNEL KILN FURNACE - A method of separating metals that are physically or structurally combined in assemblies which includes the steps of: providing at least one assembly that comprises two or more different metals that are physically or structurally combined; heating the at least one assembly in a tunnel kiln furnace to melt at least one of the different metals while maintaining at least one of the different metals in a solid state; and separating the at least one of the different metals that was melted from the at least one of the different metals that was maintained in the solid state. According to one embodiment the assemblies are “copper meatballs.” Also disclosed is a system for separating metals that are physically or structurally combined in assemblies which system includes a tunnel kiln furnace and processing containers or processing containment assemblies into or onto which the assemblies are loaded and transported through the tunnel kiln furnace in. | 02-02-2012 |
| 20150068363 | SOLDER RECOVERY UNIT - An apparatus for recovering solder from solder coated scrap pieces includes a first centrifuge comprising a centrifuge receptacle having perforation holes, rotatably mounted about a first centrifuge axis for containing and rotating a quantity of solder coated scrap pieces. A solder collection container can surround the centrifuge receptacle. A heater can surround the solder collection container for heating the solder coated scrap pieces and melting the solder thereon. A drive system can be configured for rotating the centrifuge receptacle while the first centrifuge axis is in about a horizontal position at a low speed that tumbles the scrap pieces along a longitudinal length of the centrifuge receptacle, and later rotating the centrifuge receptacle at a high speed for centrifugally extracting molten solder from the centrifuge receptacle, radially outwardly through the perforation holes into the solder collection container. | 03-12-2015 |
| 20150143954 | SYSTEM AND METHOD FOR SELECTIVELY REMOVING METALS FROM INDUSTRIAL WASTE - The invention generally relates to a system and method for selectively removing metals from a metal containing substance, and more particularly to a method and system for selectively extracting metals from fly ash with one or more of an acidic extraction process, basic extraction process, and supercritical carbon dioxide (scC02) and a co-solvent extraction process. Moreover, bi-products from an industrial process, e.g., coal fired plant, may be utilized in the extraction processes. | 05-28-2015 |
| 20160030987 | PROCESS FOR THE RECYCLING OF WASTE BATTERIES AND WASTE PRINTED CIRCUIT BOARDS IN MOLTEN SALTS OR MOLTEN METALS - Disclosed is a system and method for the recycling of waste composite feed materials such as printed circuit boards (PCBs), batteries, catalysts, plastic, plastic composites such as food packaging materials, for example Tetra Pak®, mattresses, compact disks (CDs, DVDs), automobile shredder residue (ASR), electric cable wastes, liquid display panels, mobile phones of various sizes or combinations of the above using a new pyrolysis system and method. | 02-04-2016 |
| 20160079636 | SYSTEMS AND METHODS FOR SELECTIVELY SEPARATING AND SEPARATELY PROCESSING PORTIONS OF LEAD-ACID BATTERIES - The present disclosure relates generally to systems and methods for recycling lead-acid batteries, and more specifically, relates to systems and methods for selectively separating and separately processing portions of lead-acid batteries to improve efficiency and reduce costs. A lead-acid battery processing system includes an imaging system configured to perform imaging of a lead-acid battery and perform image analysis to determine a break point that divides top lead from a remainder of the lead content of the lead-acid battery. The system also includes a battery breaking device configured to break the lead-acid battery at the determined break point and separate the lead-acid battery into a first portion, which includes the top lead, from a second portion, which includes the remainder of the lead content, for separate processing of the first and second portions of the lead-acid battery. | 03-17-2016 |
| 20160082536 | SOLDER RECOVERY UNIT - A method for recovering solder from solder coated scrap pieces includes a step of containing a quantity of solder coated scrap pieces within a centrifuge receptacle of a first centrifuge. The centrifuge receptacle has perforation holes and is rotatably mounted about a first centrifuge axis. A solder collection container surrounds the centrifuge receptacle. The method further includes the steps of heating the solder coated scrap pieces and melting the solder thereon with a heater surrounding the solder collection container and with a drive system, rotating the centrifuge receptacle while the first centrifuge axis is in about a horizontal position at a low speed and tumbling the scrap pieces along a longitudinal length of the centrifuge receptacle, and later rotating the centrifuge receptacle at a high speed for centrifugally extracting molten solder from the centrifuge receptacle, radially outwardly through the perforation holes into the solder collection container. | 03-24-2016 |
| 075403000 | Removing nonmetal from metal | 9 |
| 20080282843 | Process for Removal of the Catalytic Coating Material from Spent, Defective or Unused Metal Support Catalytic Converters - Process for recovering catalytic coating material from catalytic converters, catalytic material or catalytic assemblies where the catalytic coating material is bonded to a metal supporting structure, the process being carried out by contacting the catalytic coating material with nitric acid and/or a nitrate-containing chemical or material, applying heat, agitating the catalytic converters, catalytic material or catalytic assemblies being processed to dislodge the catalytic coating material, and rinsing the catalytic converters, catalytic material or catalytic assemblies with water to facilitate the removal of remaining catalytic coating material, and recovering ionic metal species dissolved by the nitric acid and/or nitrate-containing chemical or material. | 11-20-2008 |
| 20090293676 | METHOD OF RECOVERING VALUABLE METALS FROM WASTE - A method which allows recovery of valuable metals in simple steps from printed wiring board or the like is provided. | 12-03-2009 |
| 20100275730 | Method for recycling precious metal from used printed circuit boards - A method is disclosed for recycling precious metal from used printed circuit boards. The used printed circuit boards are roasted with plasma at 800 degrees Celsius for less than 10 minutes, thus producing exhaust and residue that contains the precious metal. The exhaust is treated with an exhaust-treatment system before it is released to the atmosphere. The residue is ground and turned into scraps of a diameter smaller than 2 mm. The scraps are subjected to magnetic separation, thus separating ferromagnetic scraps from non-ferromagnetic scraps. The ferromagnetic scraps are refined. The non-ferromagnetic scraps are screened, thus separating tiny non-ferromagnetic scraps from big non-ferromagnetic scraps. The tiny non-ferromagnetic scraps contain silver and gold. The big non-ferromagnetic scraps contain copper. | 11-04-2010 |
| 20110017020 | METHOD OF RECYCLING USEFUL METAL - A method of recycling useful metals is provided. The method enables useful metals including indium, zinc, yttrium, europium, lanthanum, terbium, gadolinium, antimony, lead, copper, tin, and silver to be recovered from wastes, such as wasted flat panel displays, and recycled economically with small energy consumption. The method of recycling useful metals includes: a step in which wastes comprising various flat panel displays, e.g., liquid-crystal display panels, are crushed/powdered; a step in which the resultant particles are dissolved in an aqueous hydrofluoric acid solution; and a step in which various metal oxides and various metal fluorides which remain undissolved are filtered off and the aqueous hydrofluoric acid solution containing various metal ions is electrolyzed to deposit and recover metals for transparent-electrode oxides, such as indium and zinc, and other useful metals. | 01-27-2011 |
| 20130081515 | METHOD FOR RECOVERING METAL COPPER FROM COATED COPPER WIRES - [Object] A technique is provided which selectively recovers a useful substance from waste including a chlorine-containing synthetic resin and metal copper in a mixed state. | 04-04-2013 |
| 20130333522 | Method of Recovering Valuable Metals from Waste - A method of recovering valuable metals from a waste including: heating the waste at a temperature and for a period of time such that a glass fiber does not melt but degrades to the extent that it becomes pulverizable, wherein conditions of the temperature and period of time are selected from a group consisting of a range of more than or equal to 750° C. and less than 800° C. for 30-40 minutes, a range of more than or equal to 800° C. and less than 900° C. for 10-40 minutes, a range of more than or equal to 900° C. and less than 950° C. for 10-30 minutes, a range of more than or equal to 950° C. and less than 1000° C. for 10-20 minutes, and a range of 1000° C. for about 10 minutes; removing the degraded glass fiber; and recovering valuable metals contained in the waste. | 12-19-2013 |
| 20140096647 | Process for the Recovery of AB5 Alloy from Used Nickel/Metal Hydride Batteries - There is provided a process for recovering AB | 04-10-2014 |
| 20150090075 | METHOD FOR THE REMOVAL AND RECOVERY OF METALS AND PRECIOUS METALS FROM SUBSTRATES - A method for removing metal and/or precious metal-containing depositions from substrates, wherein said substrate is subjected to treatment with an organo amine protectant component P and an inorganic active component A. Component P may be formed in situ by reaction with component R. Component P is an organic amine and/or organic amine hydrochloride (preferably diisopropylamine hydrochloride), component A is an inorganic compound (preferably inorganic acid or a mixture thereof) and component R is an organic compound that can be split along the C—N bond by the component A into an organic amine (preferably dimethylformamide or N-methyl pyrrolidone). The metals in the form of organo-metallic complexes can be isolated and/or separated by means of different chemical reactions (preferably reduction reactions) and/or biosorption (preferably with seaweed or yeast). | 04-02-2015 |
| 20190148798 | PYROMETALLURGICAL PROCESS FOR RECYCLING OF NIMH BATTERIES | 05-16-2019 |
