| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 075100670 | Magnetic (e.g., electromagnetic, etc.) or electrostatic processes | 31 |
| 20100071507 | NOVEL PRE-TREATMENT PROCESS FOR LIBERATION OF METALS FROM WASTE PRINTED CIRCUIT BOARDS USING ORGANIC SOLUTION - The present invention relates to a method for recovering valuable metals contained in printed circuit boards of waste electronic machine, and more particularly, to a method for recovering valuable metals from waste printed circuit boards by separating several plastic layers laminated using an organic solution and then separating plastic components from metal components using an electrostatic separation process. | 03-25-2010 |
| 20130032003 | Ore Beneficiation - A method of enriching the iron content of low grade iron ore bearing materials has been developed which produces a high iron ore concentrate suitable for processing into pig iron and steel. The process includes reducing the low grade iron ore bearing materials to a fine particulate form and treating a water slurry of this material by applying a combination of ultrasonic treatments in a plurality of high and low intensity magnetic separation operations to remove interfering materials and concentrate magnetic and paramagnetic iron bearing materials into a high grade ore stock. | 02-07-2013 |
| 20130032004 | ORE BENEFICIATION - A method of enriching the iron content of low-grade iron-bearing ore materials has been developed which produces a high iron ore concentrate suitable for processing into pig iron and steel. The process includes reducing the low-grade iron-bearing ore materials to a fine particulate form and treating a water slurry of this material by applying a combination of ultrasonic treatments in a plurality of high and low intensity magnetic separation operations to remove interfering materials and concentrate magnetic and paramagnetic iron-bearing materials into a high-grade ore stock. | 02-07-2013 |
| 20090183597 | Metal Extraction from Various Chalcogenide Minerals through Interaction with Separate Electric Fields and Magnetic Fields Supplied by Electromagnetic Energy - Multimode and single mode microwave energy is used to improve the extraction of metals from chalcogenide minerals. In one process microwave energy is used to comminute the mineral after which the mineral is reacted with acid in the presence of microwave energy. Following treatment the mineral is removed and the extracted metal is recovered from the acid. In another process chalcogenide minerals are exposed to the magnetic field maximum or the electrical field maximum of a single mode electromagnetic energy. This treatment causes a phase separation between metals and silicates within the mineral leaving metal rich regions from which the metal can be readily recovered by traditional methods. | 07-23-2009 |
| 20100101367 | METHOD AND APPARATUS FOR RECOVERING INDIUM FROM WASTE LIQUID CRYSTAL DISPLAYS - This invention provides a method and apparatus for recovering In in the form of an alloy or a metal simple substance as a valuable material from waste LCD. In the In recovery method and apparatus, there is no need to recover In as indium hydroxide, and In can be recovered as a valuable metal. Accordingly, unlike the case of indium hydroxide, the recovery does not suffer from poor handling, and In can easily be recovered through a filter or the like with significantly improved In recovery. The In recovery method is characterized by comprising crushing waste LCD containing indium tin oxide, dissolving indium tin oxide from the crushed waste LCD with an acid to give an indium compound-containing solution, allowing the solution to flow into a reactor for recovery and, further, adding particles of a metal having a larger ionization tendency than In into the reactor for recovery, fluidizing the metal particles, precipitating In or an In alloy contained in the indium compound-containing solution onto the surface of the metal particles, then separating the precipitated In or In alloy from the metal particles by separation means, and separating and recovering the separated solid In or In alloy from the liquid component. | 04-29-2010 |
| 20090056499 | METHOD AND APPARATUS FOR MAKING MAGNESIUM-BASED ALLOY - A method for fabricating a magnesium-based alloy includes the steps of: (a) mixing a number of carbon nanotubes with a number of magnesium particles; (b) heating the mixture in a protective gas to achieve a semi-solid-state paste; (c) stirring the semi-solid-paste using an electromagnetic stirring force to disperse the carbon nanotubes into the paste; (d) injecting the semi-solid-state paste into a die; and (e) cooling the semi-solid-state paste to achieve a magnesium-based alloy. An apparatus for fabricating the magnesium-based alloy includes a transferring device, a thixomolding machine, and an electromagnetic stirring device. The transferring device includes a feed inlet. The thixomolding machine includes a heating barrel having two ends, a nozzle disposed at a first end thereof, and an material input positioned at a second end thereof. The electromagnetic stirring device includes an electromagnetic induction coil disposed on an outer wall of the heating barrel. | 03-05-2009 |
| 20130118305 | Magneto-Plasma Separator and Method for Separation - A plasma separator and mass filter system is described. In some aspects the system is designed and configured to cause a plasma in a vacuum chamber and to move charged particles therein axially and circumferentially towards one or more sets of collectors. Waste material is ejected from the system while the one or more collectors yield one or more corresponding products. | 05-16-2013 |
| 20130118306 | PROCESS AND PLANT FOR PRODUCING HOT METAL - A process for producing hot metal includes partially reducing granular raw materials containing iron oxide with a carbonaceous reducing agent in a fluidized bed reactor at a temperature of at least 850° C. so as to obtain a reduced mixture. The reduced mixture is cooled to between 600° C. and 800° C. in a heat exchanger apparatus using a preheated process gas as a cooling medium that is preheated to between 300° C. and 500° C. before being introduced into the heat exchanger apparatus. The reduced mixture is then supplied to a smelting reduction unit via a discharge system. | 05-16-2013 |
| 20130118307 | DEVICE FOR PRODUCING GRANULAR METAL IRON AND PROCESS FOR PRODUCING GRANULAR METAL IRON - A device for producing granular metal iron by placing a mass of a raw material mixture comprising a substance containing iron oxide and a carbonaceous reducing agent onto a heath of a moving heath type heating furnace and heating the mass to reduce iron oxide in the mass, thereby producing the granular metal iron. The device comprises, in addition to the moving heath type heating furnace, a sieving machine, a first magnetic separator and a second magnetic separator, and also comprises a passage through which a discharged substance from the moving heath type heating furnace is supplied to the sieving machine, a passage through which crude granules that have been sieved by the sieving machine are supplied to the first magnetic separator, and a passage through which fine granules that have been sieved by the sieving machine are supplied to the second magnetic separator. | 05-16-2013 |
| 20110079108 | Method and apparatus for isolating the radioisotope molybdenum-99 - A method of isolating | 04-07-2011 |
| 20110283831 | Process for the Recovery of Nickel and/or Cobalt from a Leach Solution - A process for the recovery of nickel and/or cobalt from a nickel and/or cobalt containing solution comprising: (i) contacting the nickel and/or cobalt containing solution with metallic particles of at least one metal that is more electronegative than nickel and/or cobalt thereby enabling a cementation process to occur between the nickel and/or cobalt in the solution and the metallic particles to produce a nickel and/or cobalt cementate; and (ii) separating the nickel and/or cobalt cementate from the metallic particles thereby producing a slurry including nickel and/or cobalt cementate. | 11-24-2011 |
| 20110296949 | PROCESS AND EQUIPMENT FOR THE PRODUCTION OF DIRECT REDUCED IRON AND/OR PIG IRON FROM IRON ORES HAVING A HIGH-PHOSPHORUS CONTENT - A process and apparatus for refining iron from high-phosphorus content iron ores. The process involves mixing a high-phosphorus iron oxide ore and an alkaline solution of pH between about 12.5 and 13.5, screening the mixture by gravity to separate an alkaline-high-phosphorus solution from a low-phosphorus iron ore; and treating the low-phosphorus iron ore with lime and a natural gas. | 12-08-2011 |
| 20090314134 | METHOD AND APPARATUS FOR RECYCLING BATTERY PACK - A method for recycling a battery pack includes steps of: roasting the battery pack that houses a battery assembly that is in a charged condition, as it is, dismantling the roasted battery pack and separating the battery pack into unit cells and parts other than the unit cells, comminuting the unit cells obtained by separation, washing and screening the comminuted cells, dehydrating a slurry below a sieve after screening and recovering metals used for positive and negative electrodes, and recovering metal containing nickel by magnetically separating metal remaining on the sieve after screening, using a magnet. | 12-24-2009 |
| 20110197709 | AGITATION DEVICE, MELTING APPARATUS AND MELTING METHOD - Provided are an agitation device, a melting apparatus, and a melting method which achieve good melting efficiency without contaminating molten metal. The agitation device is provided with a traveling magnetic field generating unit which is disposed outside a charging tank for storing molten metal and generates, inside the charging tank, a magnetic field that travels downward along the rear sidewall of the charging tank, whereby a flow of the molten metal that rotates longitudinally about an axis approximately parallel to the surface of the molten metal is produced in the molten metal. By charging aluminum cutting chips into the molten metal in which the flow is produced, the aluminum cutting chips move with the flow of the molten metal, get into the molten metal roughly in the position where a downward flow of the molten metal is produced, and are immersed in the molten metal, and thus the melting of the aluminum cutting chips is accelerated. | 08-18-2011 |
| 20100126310 | DIRECT PROCESSING OF FERROTITANIA ORES AND SANDS - A method for producing pig iron by direct processing of ferrotitania sands, by the steps of:
| 05-27-2010 |
| 20090255372 | RECYCLING OF SUPERALLOYS WITH THE AID OF AN ALKALI METAL SALT BATH - The invention relates to a process for recovering valuable metals from a superalloy which has the steps of digesting the superalloy in a salt melt. The salt melt contains 60-95% by weight of NaOH and 5-40% by weight of Na | 10-15-2009 |
| 20100192727 | APPARATUS AND METHOD FOR MIXING, AGITATING AND TRANSPORTING MOLTEN OR SEMI-SOLID METAL-MATRIX COMPOSITE MATERIALS - An apparatus | 08-05-2010 |
| 20120125153 | RECOVERY OF ELEMENTS FROM HYDROTHERMAL PRODUCTS - The invention generally relates to the extraction of rare earth elements and heavy metals from geothermal fluids used in geothermal electrical production. The invention provides systems and methods for extracting these elements from hydrothermal products by the application of one or more forces that affect different components of a condensate differently. | 05-24-2012 |
| 20110017016 | SYSTEM AND METHOD FOR COOLING AND REMOVING IRON FROM A HEARTH - A system and method for cooling and removing metallic iron and other aggregate from a moving hearth is provided. Cooling may be provided by a secondary cooling system and a spray cooling system in a cooling zone. The secondary cooling system may include an arrangement of coolant tubes for absorbing heat. A flow of nitrogen may be provided through the cooling zone. The spray cooling system may provide evaporative cooling. Aggregate removal may be provided by a magnetic removal system, a plow system, and a sweeper system. The magnetic removal system uses a magnetic device and a moving belt to remove iron materials. The plow system uses a plow to separate and remove aggregate from the moving hearth. The sweeper system may use a vacuum device to pull materials from the moving hearth. | 01-27-2011 |
| 20100236362 | DEVICE FOR SUBMERGING MATERIAL INTO LIQUID METAL BY AN ELECTROMAGNETIC STIRRER - A furnace plant including at least one furnace vessel comprising side walls, a bottom and a roof. At least one heater is configured to heat metal in the furnace vessel. A compartment includes sidewalls lined with refractory material. The compartment forms an extension of the furnace vessel. At least one electromagnetic stirrer is arranged outside and adjacent to the compartment. A refractory plate is arranged inside the compartment. The refractory plate includes an upper edge configured to be positioned below a meniscus of molten metal and includes a lower edge positioned spaced apart from a bottom of the compartment. The plate is arranged such that a gap between the plate and a wall of the compartment increases toward the bottom of the compartment. | 09-23-2010 |
| 20100058891 | Method of recovering scrap metal - A method of removing iron from waste slag from a steel producing furnace that reduces the size of the waste slag to slag particles in a reduction zone. The slag particles are advanced along a conveyor in a first direction. A first and second magnet are positioned adjacent the conveyor to remove slag particles that have a sufficient iron content to be attached by the first and second magnets. A first removal belt is advanced between the first magnet and the conveyor to remove slag particles removed from the conveyor by the first magnet. A second removal belt is advanced between the second magnet and the conveyor to remove slag particles removed from the conveyor by the second magnet. A first and second separation screens are positioned along the conveyor to remove particles not removed by the first or second magnets that are small enough to pass through the first and second separation screens. | 03-11-2010 |
| 20090255371 | METHOD FOR OBTAINING VALUABLE PRODUCTS - The invention relates to a method for obtaining valuable products using red mud, which accumulates during the manufacture of aluminum by the Bayer method. The method according to the invention comprises the steps: a) reduction of at least one part of the iron(III) oxide and/or iron(III) hydroxide using at least one reductant that contains at least one hydrocarbon; and b) separation of at least one solid phase of the reaction mixture from at least one liquid and/or gaseous phase, the solid and/or liquid and/or gaseous phase comprising at least one valuable product that at least contains magnetite and the reductant comprising methane and/or natural gas and/or ethanol and/or carbon. | 10-15-2009 |
| 20080216601 | Multistage Electromagnetic Purification Method for Molten Metal - The present invention concerns a multistage-electromagnetic purification method of molten metal, which relates to the field of casting technique. The method of present invention employs a multistage separator instead of a single-stage one. The multistage separator is composed of two or more multichannel straight-pass separators bonded together with inorganic high-temperature adhesive. Each stage of the separators should be set up in such a manner that the region of centerline of each channel in the former separator is occupied by the sidewall of the next separator at the corresponding position therein, simultaneously the position in the next separator, which is corresponding to the central region of the channel in former separator, becomes a region close to sidewall. By applying multistage separator instead of single-stage separator, the present invention could eliminate the “dead zone” of electromagnetic separation, realize the transformation from “weak zone” to “strong zone” of electromagnetic separation, and increase significantly the removing efficiency of inclusions in the melt with great volume under the effect of induced magnetic field. | 09-11-2008 |
| 20120036960 | Direct processing of metallic ore concentrates into ferroalloys - A method for producing liquid ferroalloy by direct processing of manganese and chromium bearing iron compounds, by the steps: of mixing carbonaceous reductant, fluxing agent, and a binder with materials such as iron sands, metallic oxides, manganese-iron ore concentrates and/or chromium-iron ore concentrates and silica sands, to form a mixture; forming agglomerates from the mixture; feeding the agglomerates to a melting furnace with other materials; melting the feed materials at a temperature of from 1500 to 1760° C. and forming a slag and hot metal; removing the slag; tapping the hot metal as liquid ferroalloy, and utilizing the off-gases from the melting furnace as combustion fuel to drive a turbine and to generate electricity. | 02-16-2012 |
| 20090301259 | METHOD FOR THE SEPARATION OF MOLTEN ALUMINIUM AND SOLID INCLUSIONS - A method for the separation of a dispersion of molten aluminium and solid inclusions formed from a melt of aluminium containing one or more foreign chemical elements. Molten aluminium surrounding the solid inclusions is at least essentially replaced by a molten salt. | 12-10-2009 |
| 20110072935 | PROCESSING OF STEEL MAKING SLAG - A system for processing slag material from a steelmaking process includes reducing the average particle size of slag from a steelmaking process into finer particle size material by directing the slag against a surface at a velocity sufficient to cause the slag to break into smaller pieces, and separating the finer particle size material into at least an iron rich product and a silicate rich product based on the differences between these products in at least one or more properties including magnetic susceptibility, particle size, weight or specific gravity. Directing the slag against a surface to reduce the average slag particle size can better separate the dissimilar materials in the slag from each other, and result in less dust generation and less energy consumption compared to grinding the slag material. | 03-31-2011 |
| 20110067525 | APPARATUS AND METHODS FOR MERCURY AND PRECIOUS METAL RECOVERY - Apparatus and methods for mercury and precious metal recovery are provided. The apparatus includes a granulometric separator for separating a feed by particle size; a centrifugal concentrator in flow communication with the granulometric separator for isolating and concentrating an elemental mercury-containing fraction of the feed; and an accumulator tank for collecting elemental mercury from the elemental mercury-containing fraction. The accumulator tank has an inlet in flow communication with the centrifugal concentrator; an outlet; a plurality of baffles defining a serpentine flow path to slow the flow of the elemental mercury-containing fraction from the inlet to the outlet; and a mercury accumulation area for collecting elemental mercury settling from the elemental mercury-containing fraction. | 03-24-2011 |
| 20120060648 | METHOD FOR PRODUCING MULTIPHASE PARTICLE-REINFORCED METAL MATRIX COMPOSITES - A method for producing multiphase particle-reinforced metal matrix composites is provided. The method is characterized by the combination of an in-situ reaction process under an external electromagnetic field and an in-situ crystallization process under an external electromagnetic field. A traveling wave magnetic field or a rotating magnetic field is employed during the in-situ reaction process, and a rotating magnetic field or a high frequency magnetic field is employed during the in-situ crystallization process. Said method can obtain homogeneous, gradient enhanced or surface reinforced composite materials. | 03-15-2012 |
| 20120132032 | MAGNETIC RECOVERY OF VALUABLES FROM SLAG MATERIAL - The present invention relates to a process for the separation of at least one metal from a slag, comprising that at least one metal and further components, comprising at least step (A) grinding the slag, (B) if appropriate, contacting the ground slag of step (A) with at least one surface-active substance and/or at least one magnetic particle, if appropriate in the presence of at least one dispersant, resulting in formation of agglomerates of the at least one metal and the at least one magnetic particle, (C) if appropriate, addition of at least one dispersant to the mixture obtained in step (B) to give a dispersion having a suitable concentration, and (D) separation of the agglomerates from the mixture of step (B) or (C) by application of a magnetic field, and to the use of at least one magnetic particle for the separation of slag. | 05-31-2012 |
| 20120073404 | METHOD OF RECOVERING VALUABLE METAL FROM SLAG - A method of recovering a valuable metal from slag is disclosed. The method includes the steps of: applying a magnetic field whose magnitude is increased in a stepwise fashion to crushed slag to separate a magnetic material from the crushed slag; and introducing a reductant into the separated magnetic material to recover a valuable metal therefrom. The method is advantageous and cost effective because the recovery rate of iron (Fe) from slag exceeds 50% by using a magnetic field, thus reducing the amount of slag to be wasted. | 03-29-2012 |
| 20120260772 | Method and System for Processing an Iron Ore Tailings Byproduct - Methods and systems for processing an iron ore tailings byproduct are described. In one embodiment, a method for processing an iron ore tailings byproduct includes sizing particles within a slurry of the iron ore tailings byproduct to separate particles from the slurry having a dimension less than a predetermined size. After sizing, the method may further include centrifugating the particles less than the predetermined size into centrifugated concentrate and tails portions. The centrifugated concentrate portion may be separated into separated concentrate and tails portions. Finally, in certain embodiments, the separated concentrate portion may be de-watered to a remaining composition of matter comprising iron in greater proportion than in the iron ore tailings byproduct. Generally, using the systems and methods described herein, iron that would have otherwise been un-recovered is extracted from the iron ore tailings byproduct. | 10-18-2012 |
