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| Number | Title | Issue Date |
| 7622071 | Apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and apparatus for manufacturing molten irons using the same The present invention relates to an apparatus for manufacturing compacted irons of the reduced materials containing fine reduce irons and an apparatus for manufacturing molten irons provided with the same. The apparatus for manufacturing compacted irons according to... | 11/24/2009 |
| 7588717 | Apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and apparatus for manufacturing molten irons using the same The present invention relates to an apparatus for manufacturing compacted irons and an apparatus for manufacturing molten irons using the same. The apparatus for manufacturing compacted irons according to the present invention includes a charging hopper into which r... | 09/15/2009 |
| 7311519 | Raw material feeding apparatus for rotary hearth furnace The invention provides a raw materials feeding apparatus capable of uniformly dispersing and feeding into a furnace agglomerated raw materials that are likely to undergo dusting, deformation and mutual adhesion. In a raw material feeding apparatus for a rotary heart... | 12/25/2007 |
| RE39536 | Method and plant utilizing fine coal in a melter gasifier In a method for the production of liquid metal, in particular liquid pig iron (9) or liquid steel pre-products, from metal carriers, in particular partially reduced or reduced sponge iron (3), in a melter gasifier (1) in which with supply of a c... | 04/03/2007 |
| 6972108 | Device for metallizing uranium oxide and recovering uranium Disclosed is a device for metallizing uranium oxide and recovering uranium, which reacts uranium oxide with a lithium metal to product uranium metal powder, and filters the resulting product using a porous filter to separate the uranium metal powder from lithium chl... | 12/06/2005 |
| 6955506 | Device for pneumatic conveying of bulk material, especially granular material A device for pneumatically conveying bulk material has at least one flow limiter arranged in a conveying airstream. The flow limiter has a housing and at least one control member arranged in the housing. The control member controls a flow velocity of the conveying a... | 10/18/2005 |
| 6924116 | Method for identifying cells Disclosed are silica-coated nanoparticles and a process for producing silica-coated nanoparticles. Silica-coated nanoparticles are prepared by precipitating nano-sized cores from reagents dissolved in the aqueous compartment of a water-in-oil microemulsion. A reacti... | 08/02/2005 |
| 6919054 | Reactant nozzles within flowing reactors Improved reaction chamber designs are described that provide for improved control over the flow within the reaction chamber. The reaction chambers contain reactions for particle production from a flowing reactant stream. Improved reactant delivery nozzles are descri... | 07/19/2005 |
| 6811743 | Method and apparatus for supplying granular raw material for reduced iron A method for supplying a granular raw material for reduced iron in which when the granular raw material is fed into a hopper and from there supplied onto a hearth of a movable hearth furnace through a material supplying device, the material supplying device is moved... | 11/02/2004 |
| 6805723 | Method and reactor for production of aluminum by carbothermic reduction of alumina A hollow partition wall is employed to feed carbon material to an underflow of a carbothermic reduction furnace used to make aluminum. The partition wall divides a low temperature reaction zone where aluminum oxide is reacted with carbon to form aluminum carbide and... | 10/19/2004 |
| 6800113 | Equipment for distribution and feeding of charge and fuel in shaft furnaces of rectangular cross section The present invention refers to an equipment for feeding and distributing charge and fuel in furnaces of rectangular cross section, comprising movable feeding tubes to distribute along the longitudinal section and the cross section of the furnace, both a charge comp... | 10/05/2004 |
| 6652802 | Direct iron and steelmaking Solid state iron oxide reduction in a gas-solid reduction zone is combined with continuous melting of the hot solid reduced iron in a fuel-fired gas-solid-liquid melting zone within a rotary furnace. The process includes direct pneumatic transfer of the h... | 11/25/2003 |
| 6623269 | Thermal treatment apparatus A thermal treatment apparatus has a plurality of thermal treatment chambers in which an object to be treated is thermally treated while being transported, and at least one pair of two adjacent thermal treatment chambers of which inside temperatures are di... | 09/23/2003 |
| 6440193 | Method and reactor for production of aluminum by carbothermic reduction of alumina The present invention relates to a process for carbothermic production of aluminum where molten bath aluminum carbide and aluminum oxide are produced in a low temperature compartment (2), and continuously flow into a high temperature compartment (3) where... | 08/27/2002 |
| 6426036 | Direct reduction device to obtain metal iron with a high content of carbon in the form of carbide A direct reduction device (10) of the gravitational type to obtain iron carbide starting from iron oxide, comprising a reduction and carburation reactor (12) below which a cooling and passivation container (26) is arranged wherein the iron carbide is suit... | 07/30/2002 |
| 6406662 | Rotary hearth furnace with charge slot air shield An apparatus for charging feed material through an opening into a furnace has a fixed structure and a moveable door. The moveable door together with the fixed structure defines the opening. The moveable door is mounted for movement toward and away from th... | 06/18/2002 |
| 6390268 | Device for dispensing bulk materials The invention concerns a device for dispensing bulk materials comprising a vertical rotor (22) wherein is suspended a chute (14) so as to pivot about a substantially horizontal pin (26). A guiding device (68i, 70i) interlocked in rotation with the rotor (... | 05/21/2002 |
| 6332911 | Method and plant of utilizing fine coal in a melter gasifier In a method for the production of liquid metal, in particular liquid pig iron (9) or liquid steel pre-products, from metal carriers, in particular partially reduced or reduced sponge iron (3), in a melter gasifier (1) in which with supply of a carbon-cont... | 12/25/2001 |
| 6235075 | Method and device for producing silicon-rich foundry iron Disclosed is a process and apparatus for generating high-silicon foundry pig iron. In the process: a) silicon oxides and iron-carbon metals are charged in a shaft furnace; b) the charge is kept under a highly reducing atmosphere; c) the material column is guided an... | 05/22/2001 |
| 6213275 | Device for distributing materials in bulk with a rotary chute having a variable angle of inclination A device for distributing materials in bulk comprises a first rotor (20) and a second rotor (30). The first rotor (20) carries two suspension bearings (44, 46) in which a distribution chute (42) is suspended so that it can pivot about a substantially hori... | 04/10/2001 |
| 5958329 | Method and apparatus for producing nanoparticles at a high rate A method and apparatus for producing nanoparticles at a high rate is provided. The system uses two chambers separated by a narrow duct. Contained within the lower chamber is the source material, preferably heated with an electron gun and fed with a contin... | 09/28/1999 |
| 5829509 | Integrated system and process for heat treating castings and reclaiming sand Provided is a five-in-one process/integrated furnace system that (i) receives and heat treats a casting, (ii) removes sand core materials from the casting, (iii) actively reclaims sand from the sand core materials, (iv) substantially cools the reclaimed s... | 11/03/1998 |
| 5759232 | Method of charging materials into cupola A method of charging an iron scrap melting cupola with iron scrap and coke enables the iron scrap to be melted with high energy efficiency. The charging pipe feed is set at a level "h" which meets the condition of h ࣘ (r-r') tan θ, and iron scrap of a ... | 06/02/1998 |
| 5738162 | Terraced fluidized bed Provided is a process/integrated furnace system that (i) receives and heat treats a casting, (ii) removes sand core materials from the casting, and (iii) actively reclaims sand from the sand core materials. The furnace system includes a heating chamber th... | 04/14/1998 |
| 5554206 | Method of charging ore A method of and apparatus for charging fine-grained ore into a reactor pressure vessel through which process gas flows. The heated ore at first is introduced into a conveying pressure vessel, is pressurized within the same by compressed gas and subsequent... | 09/10/1996 |
| 5513835 | Distributing chute for a furnace A distributing chute for installation in a furnace, particularly suitable for use in a bell-less charging system of a blast furnace, comprises heat-resistant ceramic tiles on its underside. These ceramic tiles are inserted between, and secured by, hollow ... | 05/07/1996 |
| 5497978 | Apparatus for charging scrap into a converting furnace An apparatus for charging anode scrap into a converting furnace in a continuous copper smelting line without impairing the heat balance of the furnace. Anode scrap is moved into the opening of a chute by means of a charging mechanism. An outer shutter of ... | 03/12/1996 |
| 5476533 | Process for sintering iron oxide-containing materials on a sintering machine A sinterable mixture comprising iron-containing materials and solid fuel is sintered on a sintering machine; to decrease the rate at which exhaust gas is to be removed and to produce a desirable sinter, a part of the exhaust gas is enriched to an oxygen c... | 12/19/1995 |
| 5354038 | Heat treatment of metal castings and in-furnace sand reclamation The method and apparatus for reclaiming substantially pure sand from a heat treating furnace; wherein a casting with sand core and/or sand mold, comprising sand bound by a combustible binder, attached thereto is introduced into the heat treating furnace; ... | 10/11/1994 |
| 5316471 | Method and apparatus for mass transfer in multiple hearth funaces An apparatus for improving mass transfer in a multiple hearth furnace has a plurality of risers adjacent the furnace center shaft which are in fluid communication with a source of treatment fluid. The risers have radially extending branch pipes, each pipe... | 05/31/1994 |
| 5294094 | Method and apparatus for heat treating metal castings An improved method and apparatus for heat treating metal castings with sand cores provides for removal of the sand core and recovery of the sand core material for reuse. The method and apparatus eliminate the need for removing the sand core from the casti... | 03/15/1994 |
| 5257804 | Device for igniting a bed of a mixture of materials such as ore and coke Device (10) for igniting a moving bed of a mixture (12), in particular a mixture comprising iron ore and coke the combustion of which produces the agglomeration of the ore. The device comprises a hood (14) under which burners (16) are arranged and through... | 11/02/1993 |
| 5190719 | Plant for the production of molten metals A plant for the production of molten metals includes a melting vessel in whose wall burners and optionally oxygen-containing-gas feeding ducts are installed and on whose upper end a charging device as well as a gas evacuation duct receiving the offgases f... | 03/02/1993 |
| 5002262 | Apparatus for charging material to be sintered into a sintering machine An apparatus for charging material to be sintered into a sintering machine comprises a shuttle conveyor transporting pelletized material to be sintered, a wide conveyor receiving said pelletized material from the shuttle conveyor and feeding the pelletize... | 03/26/1991 |
| 4913406 | Shaft furnace having means for charging and adjusting a pre-mixture of ore and coke A method for operating a shaft furnace is performed by charging different ore/coke ratio mixture in radially different positions in the furnace. The ore/coke mixture ratio may be determined according to desired heat distribution in radial direction. For t... | 04/03/1990 |
| 4913734 | Method for preparing ferrocarbon intermediate product for use in steel manufacture and furnace for realization thereof The hereinproposed method and furnace provide for preliminary building up of melt in a melting pot (10) of a rectangular shape in the horizontal section, delivery of an oxygen-containing gas (3) into the melt below its surface level through tuyeres (13) w... | 04/03/1990 |
| 4898366 | Apparatus for charging a melting gasifier with gasification media and sponge iron An apparatus for charging a melting gasifier (2) with gasification media and with sponge iron discharged from a direct reduction shaft furnace (1) arranged above the melting gasifier is described. This comprises inlets and outlets in the lower part of the... | 02/06/1990 |
| 4881722 | Apparatus for producing superfine particle In preparing superfine particle in a reaction chamber by evaporation-in-gas method or on such processes as PVD or CVD using arc- or high-frequency plasma wherein in the proximity of the inner surface of the said reaction chamber, a vessel provided with a ... | 11/21/1989 |
| 4798624 | Method for the melt reduction of iron ores A method for the melt reduction of iron ores, in which iron oxide in the liquid state is substantially reduced and the energy required for the heat balance of the process is generated by adding carbonaceous fuels to the melt and by afterburning the result... | 01/17/1989 |
| 4747872 | Process and apparatus for producing high purity iron Improved process and apparatus for the reduction of iron oxides employing a solid reducing agent. Particulate iron oxides are mixed with particles of the reducing agent and are subjected to high temperatures within a vessel made of refractory material whi... | 05/31/1988 |
