Class / Patent application number | Description | Number of patent applications / Date published |
075100190 | Plasma | 18 |
20090044661 | METHODS AND APPARATUS FOR THE PRODUCTION OF GROUP IV NANOPARTICLES IN A FLOW-THROUGH PLASMA REACTOR - A plasma processing apparatus for producing a set of Group IV semiconductor nanoparticles from a precursor gas is disclosed. The apparatus includes an outer dielectric tube, the outer tube including an outer tube inner surface and an outer tube outer surface, wherein the outer tube inner surface has an outer tube inner surface etching rate. The apparatus also includes an inner dielectric tube, the inner dielectric tube including an inner tube outer surface, wherein the outer tube inner surface and the inner tube outer surface define an annular channel, and further wherein the inner tube outer surface has an inner tube outer surface etching rate. The apparatus further includes a first outer electrode, the first outer electrode having a first outer electrode inner surface disposed on the outer tube outer surface. The apparatus also includes a first central electrode, the first central electrode being disposed inside the inner dielectric tube, the first central electrode further configured to be coupled to the first outer electrode when a first RF energy source is applied to one of the first outer electrode and the first central electrode; and a first reaction zone defined between the first outer electrode and the central electrode. | 02-19-2009 |
20090071289 | PROCESS FOR RECOVERING PLATINUM GROUP METALS USING REDUCTANTS - In the process of recovering platinum group metals from platinum group metal- and base metal-containing materials, the present invention uses reductants and a sulfur-deficient matte to aide the separation of the furnace matte from the furnace slag and therefore improve recovery of platinum group metals. | 03-19-2009 |
20090107290 | PLASMA-BASED REDUCTION OF TITANIUM OXIDES - A method for reducing titanium and other metal oxides to metal is disclosed. The method comprises providing a titanium or other metal oxide exposing the metal oxide to a non-thermal plasma, and reducing at least a portion of the titanium oxide to provide titanium metal. The non-thermal plasma may be formed using a first inert gas species, and a second reactive gas species. | 04-30-2009 |
20090260481 | METHOD FOR PRODUCING TITANIUM METAL - A process and apparatus for producing titanium metal is described herein. The process comprises generating an RF thermal plasma discharge using a plasma torch provided with an RF coil; reducing titanium tetrachloride to a titanium metal by supplying titanium tetrachloride and magnesium into the RF thermal plasma discharge; and collecting or depositing the titanium metal at a temperature not lower than the boiling point of magnesium chloride and not higher than the boiling point of the titanium metal. | 10-22-2009 |
20100024595 | Method and Apparatus for Treating Return Ores Using Plasma - There is provided a method and an apparatus for treating return ores using plasma, capable of treating sintered return ores generated in a sintering process in a steel maker or return ores (iron ores) employed in other ironmaking process such as FINEX. The method of treating return ores using plasma includes: providing return ores sorted out by a sorting process; and bonding the return ores by fusing and agglomerating the return ores using plasma. Also, an apparatus for treating return ores using plasma includes a plasma heating device used to fuse and agglomerate sorted return ores. The return ores of a predetermined grain size are fusion-bonded and agglomerated using a flame of a plasma heating device. Particularly, the return ores can be treated in a massive amount to enhance productivity of a fusion-bonding process of the return ores. Furthermore, a great amount of sintered return ores generated in the sintering process can be subjected to a fewer number of re-treatment processes. | 02-04-2010 |
20100242676 | RECOVERY OF RESIDUES CONTAINING COPPER AND OTHER VALUABLE METALS - A process for recovering non-ferrous metals, in particular copper, nickel and cobalt, from metallurgical residues containing these non-ferrous metals at an oxidation state of greater than or equal to zero, in an alternating current type plasma arc electric furnace comprising a plurality of electrodes, containing a liquid copper heel covered by a fluid slag comprising at least one fusion-reduction phase, comprising charging of metallurgical residues comprising the non-ferrous metals onto the heel contained in the plasma arc electric furnace, fusion of the metallurgical residues in the fluid slag or at the slag-metal bath interface, reduction of at least the non-ferrous metals to oxidation state zero, and intense stirring of the copper heel by injection of inert gas, preferably nitrogen and/or argon, so as to avoid crust formation and to accelerate the reduction reaction and to cause the copper-miscible non-ferrous metals to pass into the copper heel. | 09-30-2010 |
20110203412 | Method and furnace for melting steel scrap - A method for smelting steel scrap in a furnace is described, a working gas being blown into the furnace via a flow channel in order to supply melting energy and being guided through at least one electrodeless plasma torch, the plasma being produced by at least one inductive heating coil that coaxially encloses the flow channel and forms a heating zone. Further a melting furnace with at least one heating device that extends through a wall of the furnace is described, for supplying melting energy. The heating device has a tubular body which encloses a flow channel. A longitudinal section of the tubular body is configured as an electrodeless plasma torch, said torch having an inductive heating coil that coaxially encloses the flow channel and forms a heating zone. | 08-25-2011 |
20120160059 | Method and Apparatus for Processing Metal Bearing Gases - A method and apparatus for processing metal bearing gases involves generating a toroidal plasma in a plasma chamber. A metal bearing gas is introduced into the plasma chamber to react with the toroidal plasma. The interaction between the toroidal plasma and the metal bearing gas produces at least one of a metallic material, a metal oxide material or a metal nitride material. | 06-28-2012 |
20120198964 | WASTE TREATMENT FURNACE AND METHOD - This invention relates to a waste treatment furnace and method comprising:
| 08-09-2012 |
20130118304 | High Temperature Reactor System and Method for Producing a Product Therein - A plasma system including a plasma source or torch such as an ICP torch acting on a granulated feed material containing a desired product is presented. Methods for employing the system are described including a process for extracting the desired product from a reaction in the plasma system, recovery of otherwise wasted heat energy, and separation of useful materials from mixed mineral substances is discussed. | 05-16-2013 |
20140182416 | SYSTEM AND METHOD OF MELTING RAW MATERIALS - A system and method for melting a raw material. The raw material is fed into an electrically conductive vessel. A plasma arc torch melts at least some of the raw material within the vessel to thereby create a molten material. An inductor, physically disposed adjacent the vessel, and electrically disposed in series with the vessel in operation, effects electromagnetic stirring of the molten material by interacting with the current of the plasma arc torch. | 07-03-2014 |
20140311286 | PLASMA HEATED FURNACE FOR IRON ORE PELLET INDURATION - In the present pelletizing apparatus, the induration of iron ore concentrate pellets is achieved in a tunnel furnace heated by plasma torches, wherein the generation of by the conventional iron ore pelletizing processes is reduced by using electricity powered plasma torches instead of burning natural gas, heavy oil or pulverized coal in burners, thereby reducing considerably industrial pollution of the atmosphere. | 10-23-2014 |
20140318312 | BASE METAL RECOVERY - The present invention relates to a method for the treatment of metal-containing waste, the method comprising: (i) introducing a particulate metal-containing waste into a plasma treatment unit; (ii) plasma treating the particulate metal-containing waste to form a layer of slag and, optionally, a layer of metal beneath the layer of slag; and (iii) recovering slag and/or metal from the plasma treatment unit; wherein the plasma treatment unit comprises an electrically conductive hearth for holding the layer of slag and optional layer of metal, one or more inlets for the particulate metal-containing waste arranged above the hearth, and an electrode arranged above the hearth so that, in use, a plasma arc is formed between the electrode and the hearth, and wherein the one or more inlets for the particulate metal-containing waste are arranged so that, in use, the particulate metal-containing waste introduced into the plasma treatment unit is heated by the plasma arc before contacting the slag layer. | 10-30-2014 |
20160060727 | PRECIOUS METAL RECOVERY - A process for treating an off-gas from the thermal processing of a precious-metal-containing feedstock, the process comprising cooling the off-gas to a temperature of from 300 to 500° C.; passing the cooled off-gas through a first particulate filter to recover particulate material; and dosing the off-gas from the first particulate filter with a sorbent material and passing the dosed off-gas through a second particulate filter; wherein at least a portion of the particulate material recovered from the first particulate filter is recycled into the thermal processing of the precious-metal-containing feedstock. | 03-03-2016 |
20160186291 | Continuous Ore Process and Apparatus Using Plasma - A method of processing ore using a plasma arc reactor includes the steps of first determining the content of the ore, modeling the plasma arc reaction for different stoichiometric ratios of ore to candidate reagents, selecting one or more of candidate reagents pre-mixing the selected reagents with the ore at corresponding stoichiometric ratios, and continuously feeding the pre-mixed ore into a plasma arc reactor, and controlling the plasma arc reaction according to the previously modeled conditions. | 06-30-2016 |
075100220 | Producing or treating Iron(Fe) or Iron alloy | 3 |
20110167959 | Method and device for introducing dust into a metal melt of a pyrometallurgical installation - A method for introducing dust into a molten bath of a pyrometallurgical installation is described. According to the method, a carrier gas containing dust particles is guided through a heating zone of an electrode less plasma torch, the gas being converted to a plasma by inductive heating prior to being blown into a region of the installation which receives the molten bath. | 07-14-2011 |
20120279349 | INOCULATION PROCESS AND DEVICE - The present invention describes an inoculation process for inoculating a nucleating additive to a cast iron alloy in a pouring distributor by means of using a transferred arc plasma torch, with an anode partially immersed in the cast iron alloy and a cathode located on the surface of said alloy, the anode or the cathode or both comprising graphite, preferably synthetic crystalline graphite, which supplies said nucleating additive to the iron alloy. The invention thus describes an inoculation device useful for carrying out the inoculation process. | 11-08-2012 |
20150040722 | IRON REDUCTION PROCESS AND EQUIPMENT - An iron production furnace equipment ( | 02-12-2015 |