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...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8187359 | Granulated metallic iron superior in rust resistance and method for producing the same An object of the present invention is to provide a method for producing granulated metallic iron superior in rust resistance. Another object of the present invention is to provide a method for producing such granulated metallic iron. In the method, the granulated me... | 05/29/2012 |
| 8182575 | Producing method of direct reduced iron A producing method of direct reduced iron includes the steps of: drying an oxidized iron raw material selected from a group including iron ore and iron-making dust generated in an iron-making process to have a predetermined moisture content; mixing the oxidized iron... | 05/22/2012 |
| 8177880 | System and method of producing metallic iron A hearth furnace 10 for producing metallic iron material has a furnace housing 11 with a drying/preheat zone 12 capable of providing a drying/preheat atmosphere for reducible material, a conversion zone 13 capable of providing a reducing ... | 05/15/2012 |
| 8157888 | Process for producing molten iron A high purity of molten iron is produced efficiently at a higher productivity, by feeding a raw material mixture containing a carbonaceous reducing agent, an iron oxide-containing material and a CaO-containing material onto a hearth of a moving-hearth reducing furna... | 04/17/2012 |
| 8133299 | Multiple hearth furnace for reducing iron oxide A multiple moving hearth furnace (10) having a furnace housing (11) with at least two moving hearths (20) positioned laterally within the furnace housing, the hearths moving in opposite directions and each moving hearth (20) capable of be... | 03/13/2012 |
| 8101007 | Method for reduction treatment of electric furnace dust The method includes the steps of: adding a carbonaceous material B and a binder C, and optionally water, to electric furnace dust A generated in a steelmaking electric furnace 1, to form a powdery mixture D having a water content of 0.5 to 3 mass %; compactin... | 01/24/2012 |
| 8097065 | System and method for producing metallic iron A hearth furnace 10 for producing metallic iron material has a furnace housing 11 having a drying/preheat zone 12, a conversion zone 13, a fusion zone 14, and optionally a cooling zone 15, the conversion zone 13 is be... | 01/17/2012 |
| 8092574 | Method of producing reduced iron cast, and method of producing pig iron In a method of producing a reduced iron cast, a cast of a powder which includes total iron of 40% or more and an atomic molar amount of fixed carbon of 0.7 to 1.5 times the atomic molar amount of oxygen compounded with metal oxide reduced in a carbon monoxide atmosp... | 01/10/2012 |
| 8088195 | Method for manufacturing titanium oxide-containing slag The present invention provides a method for efficiently manufacturing a titanium oxide-containing slag from a material including titanium oxide and iron oxide, wherein a reduction of titanium dioxide is suppressed and the electric power consumption is minimized. The... | 01/03/2012 |
| 8021460 | System and method for producing metallic iron nodules A method for producing metallic iron nodules by assembling a shielding entry system to introduce coarse carbonaceous material greater than 6 mesh in to the furnace atmosphere at location(s) where the temperature of the furnace atmosphere adjacent at least partially ... | 09/20/2011 |
| 8012236 | Method and apparatus for producing reduced metal It is an object of the present invention to provide a technique for solving the following problem by properly controlling the flow of gas such as air (oxidizing gas): a problem that the degree of reduction cannot be increased due to the air entering a feedstock-feed... | 09/06/2011 |
| 7998242 | Method and apparatus for carrying out a metallurgical process A metallurgical process involves providing an ingredient enclosure and placing a plurality of granules of a first material in the ingredient enclosure. The first material contains a first ingredient in a metallurgical process. A metallurgical process furnace having ... | 08/16/2011 |
| 7993430 | Process for producing molten iron and apparatus for producing molten iron The disclosure relates to improvements of technology for producing metallic iron by thermally reducing an iron source such as iron ore with a carbonaceous reductant such as coke by including efficiently reducing iron oxides into metallic iron at a lower operation te... | 08/09/2011 |
| 7964014 | Metal oxide-bearing green pellets for reducing furnace, method of production of same, method of reduction of same, and reduction facility The present invention provides a method and facility for preventing crumbling and powderization of green pellets when producing high strength green pellets using a powder feedstock and using the pellets in a rotary hearth reducing furnace and for efficiently reducin... | 06/21/2011 |
| 7955412 | Method for producing agglomerated material A method is provided for producing an agglomerated material that is used for producing metallic iron by heat reduction in a moving hearth-type reducing furnace, wherein the agglomerated material can have a high mechanical strength without increases in the binder con... | 06/07/2011 |
| 7938883 | Method and apparatus for making metallic iron A method of making metallic iron in which a compact, containing iron oxide such as iron ore or the like and a carbonaceous reductant such as coal or the like, is used as material, and the iron oxide is reduced through the application of heat, thereby making metallic... | 05/10/2011 |
| 7846235 | Method for producing metallic iron A method for producing metallic iron in which a mixture including a carbonaceous reducing agent and iron oxide is fed onto a hearth of a moving hearth reducing-melting furnace and is then heated so that the iron oxide is reduced and melted. Metallic iron to be obtai... | 12/07/2010 |
| 7674316 | Method for producing metallic iron A hearth material is laid in the form of a layer on the hearth prior to supply of a mixture containing a carbonaceous reducing agent and iron oxides onto a hearth of a reduction melting furnace, thereby forming a renewable hearth capable of being renewed, and the me... | 03/09/2010 |
| 7674315 | Method and apparatus for carrying out a metallurgical process A metallurgical process involves providing an ingredient enclosure and placing a plurality of granules of a first material in the ingredient enclosure. The first material contains a first ingredient in a metallurgical process. A metallurgical process furnace having ... | 03/09/2010 |
| 7666249 | Linear hearth furnace system and methods regarding same Systems and methods for use in processing raw material (e.g., iron bearing material) include a linear furnace apparatus extending along a longitudinal axis between a charging end and a discharging end (e.g., the linear furnace apparatus includes at least a furnace z... | 02/23/2010 |
| 7618476 | Method and apparatus for cooling reduced-iron agglomerate In a method and an apparatus for cooling a reduced-iron agglomerate in a reduced-iron agglomerate production equipment wherein an iron oxide agglomerate is reduced in a reducing furnace and discharged as a reduced-iron agglomerate, a conveyer to convey said reduced-... | 11/17/2009 |
| 7572316 | Method for manufacturing reduced metal A method for manufacturing a reduced metal includes thermally reducing a metal oxide including a carbonaceous reductant disposed on a hearth moving in a reducing furnace, wherein the reducing furnace includes a plurality of primary burners for supplying fuel and pri... | 08/11/2009 |
| 7462219 | Production method of metal iron A method producing metallic iron by reducing raw materials including an iron-oxide containing material and a carbonaceous reducing agent under heating, which can minimize re-oxidization of the metallic iron and can efficiently produce metallic iron having a high met... | 12/09/2008 |
| 7407526 | Food additive The invention concerns an iron powder for fortifying foodstuff. The powder consists of a reduced iron powder having irregularly shaped particles, wherein the iron powder has a ratio AD:PD less than 0.3, wherein AD is the apparent density in g/cm3, and PD ... | 08/05/2008 |
| 7384450 | Method for producing metallic iron In a method of producing metallic iron by reducing and melting a raw material, which contains an iron oxide-containing material and a carbonaceous reducing agent, by heating, the raw material for producing metallic iron is supplied after a powder and granular atmosp... | 06/10/2008 |
| 7340420 | Method and system for providing information on industrial wastes, server and terminal for providing the information, recording medium for recording computer-readable program, and program allowing computer to execute process A system provides assistance in the delivery of industrial wastes from industrial waste-generating sites to one or more industrial waste treatment sites based on exchanged information on industrial wastes containing metal oxide. The system includes a server, termina... | 03/04/2008 |
| 7204689 | Seal structure of solid feeding screw, and method of manufacturing reduced metal using the seal structure A sealing structure for a solid-transferring screw installed inside a heating furnace such as a material-leveling screw and a product-discharging screw, the sealing structure enabling the solid-transferring screw to be lifted during operation while airtightness of t... | 04/17/2007 |
| 7192552 | Facility for reducing metal oxide, method of operating the same, and shaped article of raw material for reducing furnace The present invention provides a reducing furnace of the rotary hearth-type and a method for reducing a metal oxide simplified in the process from dehydration to molding, according to which a moisture-rich powdery raw material is reduced at low cost. The present inv... | 03/20/2007 |
| 7175691 | Method of producing stainless steel by re-using waste material of stainless steel producing process A method of producing stainless steel includes the steps of melting a raw material in an electric furnace to form molten steel, and then refining the molten steel by a refining furnace to produce stainless steel in a stainless steel producing process. In the method,... | 02/13/2007 |
| 7037356 | Method for operating rotary hearth type reducing furnace and rotary hearth type reducing furnace facilities The present invention provides a method of operation and a facility for the same suppressing the generation of dioxins in the combustion exhaust gas and efficiently reclaiming heat from high temperature combustion exhaust gas when firing and reducing fines of chromi... | 05/02/2006 |
| 6993855 | Method for drying compact containing metal oxide, method for reducing metal oxide, and rotary-hearth-type metal reducing furnace The present invention provides: a method for drying compacts containing water so as not to cause explosion and powdering; a method for reducing the compacts after being dried with great efficiency in a rotary-hearth-type reducing furnace; and a rotary-hearth-type me... | 02/07/2006 |
| 6986801 | Method of producing reduced iron compacts in rotary hearth-type reducing furnace, reduced iron compacts, and method of producing molten iron using them There is provided a method of producing reduced iron compacts with high crushing strength, low powderization and a high reduction rate in a solid reduction-type firing reducing furnace such as a rotary hearth-type reducing furnace, as well as reduced iron compacts o... | 01/17/2006 |
| 6918947 | Method for making reduced iron A method for making reduced iron using blast-furnace sludge is provided. The method includes a mixing step of mixing the blast-furnace sludge and an iron-oxide-containing powder to prepare a mixed material, an agglomerating step of agglomerating the mixed material t... | 07/19/2005 |
| 6837916 | Smelting reduction method A smelting reduction method comprising (a) charging a carbonaceous material and an ore into a reacting furnace to directly contact the carbonaceous material and the ore; (b) reducing the ore until at least a part of the ore is metallized, the resultant reduced ore c... | 01/04/2005 |
| 6814924 | Rotary hearth furnace and screw thereof for discharging reduced iron A rotary hearth furnace is provided to simplify detachment and assembly operations of a reduced iron discharging screw. At both side walls of an insulating housing 2a constituting in part of a furnace body 2 of a rotary hearth furnace ... | 11/09/2004 |
| 6802886 | Method of producing a metallized briquette The invention is a method of making metallized iron agglomerates by combining iron/steel particles and a reductant material with a cellulose fiber binder material, compacting the combination to form a solid agglomerate, and reducing the iron portions of the agglomer... | 10/12/2004 |
| 6797034 | Method of producing reduced metals and apparatus for reducing metal oxides A method of producing reduced metals is disclosed in which a mixture of a metal oxide and a reducing agent is heated by a burner such that the metal oxide is reduced to a reduced metal. Dry-distilled gas generated during carbonization of an organic matter-containing... | 09/28/2004 |
| 6790255 | Moving-hearth heating furnace and method for making reduced metal agglomerates An annular rail 6 is fixed on the lower surface of a moving hearth 2, and the rail 6 is supported from below by support rollers 7 provided with elevating devices 8. The moving hearth 2 is continuously or intermittently moved... | 09/14/2004 |
| 6755888 | Facility for reducing metal oxide, method for operating the facilities and moldings as raw material to be charged to reduction furnace The present invention provides a reducing furnace of the rotary hearth-type and a method for reducing a metal oxide simplified in the process from dehydration to molding, according to which a moisture-rich powdery raw material is reduced at low cost. The present inv... | 06/29/2004 |
| 6749664 | Furnace hearth for improved molten iron production and method of operation An apparatus and method for the direct reduction of iron oxide utilizes a hearth furnace having a vitreous hearth layer of conditioning materials, with the vitreous hearth layer introduced onto a refractory surface of the furnace. The vitreous hearth layer may have ... | 06/15/2004 |
