| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 266144000 | WITH MEANS TREATING OR HANDLING GASES EXHAUSTED BY TREATING MEANS | 27 |
| 20120032378 | Blast Furnace Iron Production with Integrated Power Generation - An integrated system for blast furnace iron making and power production based upon higher levels of oxygen enrichment in the blast gas is disclosed. The integrated system leads to; 1) enhanced productivity in the blast furnace, 2) more efficient power production, and 3) the potential to more economically capture and sequester carbon dioxide. Oxygen enhances the ability of coal to function as a source of carbon and to be gasified within the blast furnace thereby generating an improved fuel-containing top gas. | 02-09-2012 |
| 20120104668 | CONTINUOUS SCRAP SUPPLY INTO AN ELECTRIC ARC FURNACE (EAF) - A continuous scrap feed into an electric smelting furnace (EAF) having a channel connected at one end to an opening in a wall of the smelting furnace and has at its other end a charging device for the scrap. An extraction device for the off-gases which are guided through the channel serve to preheat the scrap, this extraction device being connected to the channel between the two ends of the channel located closer to the smelting furnace than the scrap feed in relation to the total length of the channel. The extraction device is a single-stage blower whose intake opening is oriented in the direction of the smelting furnace, and the clear cross section of the channel between the extraction device and the scrap feed is adapted to the amount of scrap so that the height of the scrap charge substantially fills the clear cross section. | 05-03-2012 |
| 20120193842 | APPARATUS FOR MANUFACTURING MOLTEN METAL - Disclosed is a production device of which secondary combustion efficiency can be further improved when a molten metal is produced by directly reducing and melting a metal agglomerate raw material layer in an electric heating furnace. Specifically, material charging chutes ( | 08-02-2012 |
| 20120200013 | APPARATUS FOR MANUFACTURING MOLTEN METAL - Disclosed is a molten metal producing device capable of effectively preventing a hanging of a metal agglomerate raw material layer and capable of reliably removing hanging even if the hanging occurs. Raw material for forming the raw material layer (A) and metal agglomerate raw material (B) are charged in this order from raw material charging chutes ( | 08-09-2012 |
| 20130038002 | PORTABLE OVEN - A portable thermal oven includes a metal frame and a plurality of terracotta panels disposed inside of the frame and defining an enclosed chamber having a front panel, a rear panel, two opposite side panels, a top panel and a bottom panel. The furnace also includes a terracotta door hingedly disposed in the front panel and including a handle on one side thereof for opening and closing the door. A plurality of gas manifolds and a plurality of gas burners are disposed on each of the two opposite sides of the chamber and a ventilation hatch is disposed in the top panel for exhausting fumes and excess heat. A first and a second gas cylinder and pipes for connecting the gas cylinders to the manifolds for supplying gas and/or air to the manifolds are also provided. | 02-14-2013 |
| 20140084524 | PARTIALLY-REDUCED IRON PRODUCING APPARATUS - A partially-reduced iron producing apparatus includes: an exhaust gas circulating device supplying an oxygen-containing gas to raw-material pellets to be heated by ignition of raw-material pellets, the oxygen-containing gas made by circulating part of an exhaust gas by use of the heat of the ignition raw-material pellets and mixing the discharged exhaust gas with air; and a liquid-tar separating device which is provided in the exhaust gas circulating device. A partially-reduced iron is produced by heating and reducing the whole of the raw-material pellets in a bed height direction thereof through a combustion region for the raw-material pellets and a heating region for the raw-material pellets, the combustion region formed on an upstream side of an endless grate by supplying the gas having a high oxygen concentration; and the heating region formed downstream of the combustion region of the endless grate by supplying the gas having a low oxygen concentration. | 03-27-2014 |
| 20150329930 | REFORMER-GAS-BASED REDUCTION PROCESS WITH DECARBONIZATION OF THE FUEL GAS FOR THE REFORMER - In a process and apparatus for the reduction of metal oxides to form metalized material by contact with hot reducing gas, which is produced at least partially by catalytic reformation of a mixture of a gas containing carbon dioxide (CO | 11-19-2015 |
| 266145000 | Having means to treat or handle gases evolving from rotary furnace | 1 |
| 20090160107 | Rotary Hearth Furnace And Method Of Operating The Same - A rotary hearth furnace includes an exhaust gas eductor. The exhaust gas eductor includes a compartment-defining portion and an exhaust duct. The compartment-defining portion is provided on part of a ceiling of the rotary hearth furnace in an exhaust gas discharge region, and an exhaust duct is connected to the compartment-defining portion. The lower surface of the compartment-defining portion lies higher than the lower surface of the other portion of the ceiling. The compartment-defining portion defines a compartment where the exhaust gas stays. The exhaust duct can include a cooling medium injection nozzle. The furnace increases fuel efficiency by completely burning combustible components remaining in exhaust gas generated in the rotary hearth furnace so as to use the combustible components efficiently for the heating and reduction reaction in the rotary hearth furnace, without problems in producing reduced iron. | 06-25-2009 |
| 266146000 | By contacting gas with nonmetallic liquid | 1 |
| 266147000 | By liquid spraying | 1 |
| 20140124993 | OFF-GAS CHANNEL - An off-gas channel ( | 05-08-2014 |
| 266148000 | By condensing and collecting a volatile constituent | 2 |
| 20160153065 | Method of Apparatus for Condensing Metal Vapours Using a Nozzle and a Molten Collector | 06-02-2016 |
| 266149000 | Within evacuated chamber | 1 |
| 20090140472 | REDUCTION APPARATUS, REDUCTION APPARATUS MANUFACTURE METHOD, AND VACUUM SMELTING REDUCTION FURNACE USING THE SAME - The invention discloses a reduction apparatus having a main body made of silicon carbide-based material and collectively formed by a top portion, a bottom portion, and a side portion, wherein the bottom portion includes a slanted plane, and the main body has an inlet and a metallic vapor exit provided near the top portion and an outlet provided near the lowest end of the slanted bottom portion; an inlet closure connected with the inlet; an outlet closure connected with the outlet; and a metal collector or a condenser connected with the metallic vapor exit. The invention solved problems found in conventional reduction retorts, including: small capacity, low metal output, inconvenience in charging reactant material and discharging spent residue, and heavy workload for workers. The invention also shortened the time for reduction reaction, increased production efficiency and output of the reduction furnace, and reduced production cost. The invention can be used in production of metal such as magnesium, strontium, zinc, and beryllium by vacuum smelting reduction process. | 06-04-2009 |
| 266155000 | With heat exchanger, e.g., waste heat boiler | 10 |
| 20090309275 | DIRECT SMELTING PLANT - A direct smelting plant for producing molten metal from a metalliferous feed material using a molten bath based direct smelting process is disclosed. The plant includes a plurality of crane access zones that are outboard of a gas delivery main to enable solids injection lances to be removed from and replacement lances to be positioned in openings in a side wall of a direct smelting vessel. The plant also includes a plurality of crane access zones that are inboard of the gas delivery main to enable gas injection lances to be removed from and replacement lances to be positioned in openings in the side wall of the vessel. | 12-17-2009 |
| 20100096784 | SYSTEM EMPLOYING GENERATION OF CONTROLLED FURNACE ATMOSPHERES WITHOUT THE USE OF SEPARATE GAS SUPPLIES OR STAND-ALONE ATMOSPHERE GENERATORS - In a system for processing metal, a furnace is provided which receives the metal being processed. At least one heating burner is provided in the furnace together with at least one atmosphere burner of substantially a same construction as the heating burner. An exhaust of the atmosphere burner at least partially provides an atmosphere within the furnace for the metal processing. An exhaust of the heating burner is separate from the exhaust of the atmosphere burner. A fuel feed for the atmosphere burner and a fuel feed for the heating burner are each separately controllable. | 04-22-2010 |
| 20120013053 | Apparatus for direct smelting of zinc bearing compounds to produce metallic zinc - Apparatus for producing lead and zinc from concentrates of zinc and lead sulfides or oxides, including: a source of zinc ore and/or lead ore concentrates, iron bearing and carbon containing materials; metallic iron fines and iron oxide fines; carbonaceous reductant; fluxing agent; and a binder; a mixer for forming a mixture from said concentrates and other materials; an agglomerator communicating with the mixer for forming agglomerates from the mixture; a melting furnace for melting the mixture and vaporizing lead and zinc; a pressure sealed feed system communicating with the agglomerator and the melting furnace for introducing agglomerates to the melting furnace; a pressure sealed chamber surrounding the melting furnace; a water-cooled condenser for receiving the vaporized metal and cooling and condensing the metal vapors to liquid metal; a tapping device communicating with the condenser for removing the liquid metal; and associated devices for separating the zinc and lead and recovering the lead and zinc metal separately. | 01-19-2012 |
| 20120133089 | HEAT TREATMENT FURNACE - A heating section | 05-31-2012 |
| 20130228958 | APPARATUS FOR ATOMIZING MOLTEN SLAG AND RECOVERING VALUABLE METAL - The present invention relates to an apparatus for atomizing molten slag and recovering valuable metals, and more particularly to an apparatus for atomizing molten slag and recovering valuable metals, which enables molten slag of a blast furnace or a converter or an electric furnace to be atomized and valuable metals to be recovered. | 09-05-2013 |
| 20140042677 | PROCESS AND DEVICE FOR PRODUCING PIG IRON OR LIQUID STEEL PRECURSORS - A process for producing pig iron or liquid primary steel products in a smelting unit ( | 02-13-2014 |
| 20140217653 | SYSTEM FOR ENERGY OPTIMIZATION IN A PLANT FOR PRODUCING DIRECT-REDUCED METAL ORES - A system for energy optimization in a plant ( | 08-07-2014 |
| 20140252699 | DIRECT REDUCED IRON MANUFACTURING SYSTEM - A direct reduced iron manufacturing system includes a gas reformer for supplying steam to reform natural gas, a gas heater being a heating unit for heating a reformed gas reformed by the gas reformer to a predetermined temperature, a direct reduction furnace for reducing iron ore directly into reduced iron using a high-temperature reducing gas, an acid gas removal unit having an acid gas component absorber and a regenerator for releasing the acid gas, and a recovery gas introduction line for supplying a recovery gas released from the regenerator to each of a reforming furnace of the gas reformer and a furnace of the gas heater. | 09-11-2014 |
| 20140252700 | DIRECT REDUCED IRON MANUFACTURING SYSTEM - Included are: a direct reduction furnace for reducing iron ore directly into reduced iron using a high-temperature reducing gas including hydrogen and carbon monoxide, an acid gas removal unit having an acid gas component absorber for removing, with an absorbent such as an amine-based solvent, acid gas components (CO | 09-11-2014 |
| 20150042024 | METAL MELTING FURNACE - A metal melting furnace which can more effectively melt the melting material and hold the temperature of the molten material so as reduce the fuel economy compared with the past, that is, a metal melting furnace which has a material charging port and a flue at its top and is provided with a melting chamber which is provided with a heating plate which melts a melting material which is charged from the material charging port at its bottom, wherein a heating burner is disposed at a bottom side of the heating plate of the melting chamber, the heating burner is used to melt the melting material on the heating plate, and exhaust gas of the heating burner which circulates through the exhaust gas channel is used to preheat the melting material of the flue and in that at a bottom side of the heating burner of the melting chamber, a molten material holding section to which molten material which was melted on the heating plate flows down into to be stored is formed, and the heating burner is used to hold the temperature of the molten material. | 02-12-2015 |
| 266156000 | By means recycling exhaust gas | 4 |
| 20080290566 | METHOD AND DEVICE FOR PRODUCING PIG IRON AND/OR PIG IRON INTERMEDIATE PRODUCTS - Apparatus and process for producing metal products, in which a metal-containing charge material is melted in a melting unit, and a working gas, in particular an at least partially reducing working gas, is additionally produced in the melting unit. The working gas produced is extracted and if appropriate after cleaning, is used as a carrier gas, at least in part for—preferably pneumatic—transport of an at least partially reduced metal-containing material in the form of fine particles. | 11-27-2008 |
| 20130056916 | PRODUCTION OF MAGNESIUM METAL - A process of producing magnesium metal includes providing magnesium carbonate, and reacting the magnesium carbonate to produce a magnesium-containing compound and carbon dioxide. The magnesium-containing compound is reacted to produce magnesium metal. The carbon dioxide is used as a reactant in a second process. In another embodiment of the process, a magnesium silicate is reacted with a caustic material to produce magnesium hydroxide. The magnesium hydroxide is reacted with a source of carbon dioxide to produce magnesium carbonate. The magnesium carbonate is reacted to produce a magnesium-containing compound and carbon dioxide. The magnesium-containing compound is reacted to produce magnesium metal. The invention also relates to the magnesium metal produced by the processes described herein. | 03-07-2013 |
| 20150345869 | REFORMER GAS-BASED REDUCING METHOD WITH REDUCED NOx EMISSION - In a process and apparatus for the reduction of metal oxides ( | 12-03-2015 |
| 20160076113 | METHOD AND DEVICE FOR REDUCING IRON-OXIDE-CONTAINING FEEDSTOCKS IN A HIGH-PRESSURE REDUCING UNIT - A method for reducing iron-oxide-containing feedstocks by introducing a reducing gas into a high-pressure reducing unit ( | 03-17-2016 |
| 266157000 | By separating particles from evolved gas | 1 |
| 20130328252 | FURNACE DIRECT EVACUATION SYSTEM - An evacuation system for an electric arc furnace that includes a combustion chamber downstream of the electric arc furnace, for receiving exhaust comprising gas and particulate from the electric arc furnace. The evacuation system also includes a dropout section downstream of the combustion chamber, for receiving the exhaust from the combustion chamber, for collecting the particulate, and for allowing the gas to pass through the dropout section to an exhaust duct. | 12-12-2013 |
| 266158000 | Hood | 1 |
| 20160252304 | APPARATUS FOR PRE-HEATING A METAL CHARGE FOR A MELTING PLANT AND CONNECTED METHOD | 09-01-2016 |
