Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7374716 | Metallurgical oven and a material basket for a metallurgical oven A metallurgical furnace has a cover (20) for a vessel (10) and a charging device (30) for charging material that will be melted in the vessel. The charging device has a rotatable retaining means (31) and a projection (40) is provid... | 05/20/2008 |
| 7306763 | Metallurgical vessel for melting device for liquid metals A metallurgical vessel for a melting device for liquid metals has a vessel top, a vessel bottom provided with a collar, and an intermediate ring arranged between the vessel top and the vessel bottom. The vessel bottom receives a melt defining a melting zone within t... | 12/11/2007 |
| 7279127 | Continuous steelmaking plant The present invention provides a process plant for the production of molten steel from primary and/or secondary ferrous materials in which no free oxygen is permitted to contact directly carbon-containing iron melts, comprising:—i) at least three pairs of furnaces... | 10/09/2007 |
| 7060220 | Metal melting furnace In a metal melting furnace, a separation wall 60 is provided between an inclined hearth 30 and a molten metal reservoir 35 to define a molten metal processing portion 65. The separation wall is provided with a connecting passage 61... | 06/13/2006 |
| 6893607 | Elevated discharge gas lift bubble pump and furnace for use therewith A metal melting closed furnace which includes a main chamber, a circulation well connected to the main chamber by a communications passageway and a vortex well having a exit outlet for molten metal into the main chamber. A cover is emplaced over the vortex well. An ... | 05/17/2005 |
| 6855188 | Multichambered steelmaking apparatus and method of steelmaking The invention pertains to the art of ferrous metallurgy, and more particularly, to a multichambered steelmaking apparatus and to a method of steelmaking. A multichambered steelmaking apparatus contains smelting chambers communicating with each other through their up... | 02/15/2005 |
| 6797228 | Oxy-fueled aluminum recovery method An oxygen fueled combustion system includes a furnace having at least one burner, an oxygen supply for supplying oxygen having a predetermined purity, and a carbon based fuel supply for supplying a carbon based fuel. The oxygen and the carbon based fuel are fed into... | 09/28/2004 |
| 6696013 | Metallurgical furnace with scrap metal preheater and dispenser A Preheater-Steelmaking Furnace and closed loop Process System for semi-continuous melting of integrally preheated recycled or virgin ferrous charge, by using highly energy efficient combustion process of natural gas combusted by oxygen as the main heat s... | 02/24/2004 |
| 6540957 | Ladle, a ladle heating system and methods of heating the ladle A ladle after teeming for a continuous casting and a subsequent slag discharge is mounted on a ladle truck and then moved by the ladle truck to a tapping station. The ladle on the ladle truck is then stationed over a predetermined stand-by time and is the... | 04/01/2003 |
| 6436337 | Oxy-fuel combustion system and uses therefor An oxygen fueled combustion system includes a furnace having at least one burner, an oxygen supply for supplying oxygen having a predetermined purity, and a carbon based fuel supply for supplying a carbon based fuel. The oxygen and the carbon based fuel a... | 08/20/2002 |
| 6274081 | Smelting installation with an electric-arc furnace This invention concerns a smelting installation with an electric-arc furnace in which the roof of the oven vessel is constructed out of two units (7, 8) which are separated by an aperture (38) and can be moved independently of one another relative to the ... | 08/14/2001 |
| 6245124 | Vertical shaft furnaces A vertical shaft furnace for melting scrap metal, particularly copper scrap, uses one or more burners operated superstoichiometrically in order to provide excess oxygen to react with a waste gas stream passing up through the copper scrap thereby reducing ... | 06/12/2001 |
| 6217823 | Metal scrap submergence system A metal scrap submergence device comprising an open top chamber including walls of a heat resistant material, an inlet positioned in a side wall of the chamber, an outlet positioned in the base of said chamber, and a ramp adjacent said side wall of the ch... | 04/17/2001 |
| 6155333 | Continuous electric steelmaking with charge preheating, melting, refining and casting An improved method and apparatus for preheating, melting, refining and casting of steel. The apparatus has a variable length secondary belt conveyor positioned in a charging area for introducing minute charge materials or slag formers, a skirted self-posi... | 12/05/2000 |
| 6136064 | Method for charging a reverbratory furnace with metal chips An apparatus and method for reclaiming metal chips formed while machining metal castings to their finished shape. The apparatus includes a stationary charging tube extending in a generally perpendicular direction from the charge well of a reverbratory fur... | 10/24/2000 |
| 6136264 | Melting apparatus and method for melting metal Melting apparatus for melting a metal, such as aluminium, comprising a melting chamber, a burner chamber and a passage which extends between the melting chamber and the burner chamber and which has an inlet opening on the melting-chamber side and an outle... | 10/24/2000 |
| 6126716 | Iron-base scrap preheating apparatus and method In order to preheat pieces of iron scrap of various sizes and shapes highly effectively while avoiding the fusion of the pieces of iron scrap, a rotary kiln type preheating furnace and a shaft type preheating furnace are arranged in parallel with each oth... | 10/03/2000 |
| 6074455 | Aluminum scrap melting process and apparatus A method of melting metal scrap in a molten melting media, the method comprising (a) providing a source of molten melting media in a furnace, the melting media in the furnace having a first surface level; (b) providing a first melting bay in fluid communi... | 06/13/2000 |
| 6068812 | Inert gas bubble-actuated molten metal pump with gas-diffusion grid An inert gas bubble-actuated molten metal pump, for the movement of molten metal in a molten-metal bath, which obviates the necessity of a heatproof and flameproof cover to counteract splashing and spattering at the surface of the molten metal bath above ... | 05/30/2000 |
| 6024912 | Apparatus and process system for preheating of steel scrap for melting metallurgical furnaces with concurrent flow of scrap and heating gases The invention provides a novel preheating apparatus and method for preheating a ferrous scrap mixture prior to feeding the scrap into a metallurgical furnace, primarily using heat recovered from hot waste gases emitted from the furnace exhaust port, and s... | 02/15/2000 |
| 6004369 | Steel production method The invention relates to a method to produce steel from a ferrous material, by using one furnace divided into, at least, two vessels which are connected to each other at least by ducts for the off-gases and ducts for the melted metal. The vessels have a g... | 12/21/1999 |
| 5984999 | Apparatus having gas-actuated pump and charge well and method of melting metal therewith charge a well of a metal-melting furnace The charge well of a metal melting furnace is provided with an internal cavity having a circular cross section when viewed from the top, preferably a cavity of cylindrical or conical configuration, and with a peripheral exit port located tangentially with... | 11/16/1999 |
| 5961689 | Method of protective atmosphere heating A method for heating and/or melting a charge such as aluminum in a furnace using heat generated by combustion to radiatively heat the charge through a layer of protective gas wherein combustion reaction products generated by the combustion are exhausted f... | 10/05/1999 |
| 5928602 | Metal waste processing facility A facility to process metal wastes is provided. The facility includes an inclined heat-insulated casing with a door and a cover, which can be displaced and removed. The inner surface of the casing is provided with removable sheets which form the inner fac... | 07/27/1999 |
| 5908488 | Magnesium melting furnace and method for melting magnesium The magnesium melting furnace (1) has a plurality of chambers. The material to be melted is fed into a melting chamber (2) through a charging chute (20), one end of which terminates under the surface of the melting bath. The melt is slowly transferred int... | 06/01/1999 |
| 5904895 | Apparatus for electric steelmaking A burner/injector for providing a localized impingement flame or multiple flames for scrap heating and melting through use of a fluid fuel and at least one oxygen rich oxidizing gas. The burner/injector includes a liquid-cooled combustor for generating an... | 05/18/1999 |
| 5900209 | Plant for producing metal melts A plant for producing metal includes a electricity supply system and a direct-current electric arc furnace connected thereto, where in order to make do with an electricity supply system possessing a relatively small short-circuit capacity, the direct-curr... | 05/04/1999 |
| 5879617 | Apparatus for treating waste materials A method and apparatus for treating residual or waste materials that can be recycled energetically, especially light-weight refuse from shredders, which, reduced in size and classified, are stored in bunkers. The residual or waste material is fed by porti... | 03/09/1999 |
| 5853454 | Mass flow gravity feed apparatus for charging metal-melting furnaces with dross level compensator and method for charging metal-melting furnaces therewith Mass flow gravity feed furnace charger apparatus includes (1) a charge-well cover having an aperture and (2) an essentially vertical conduit for forming a substantially vertically-oriented column of metal chips or scrap within and above the aperture, and ... | 12/29/1998 |
| 5846480 | Aluminum remelting furnace, in particular for melting aluminum scrap to be recycled An aluminum remelting furnace for recycling scrap. In order to prevent atmospheric dispersion of toxic substances from the combustion of aluminum scrap contaminants, the furnace includes a loading chamber positioned on the upper wall of the furnace which ... | 12/08/1998 |
| 5843368 | Apparatus for electric steelmaking A burner/injector for providing a localized impingement flame or multiple flames for scrap heating and melting through use of a fluid fuel and at least one oxygen rich oxidizing gas. The burner/injector includes a liquid-cooled combustor for generating an... | 12/01/1998 |
| 5800591 | Method and apparatus for feeding a steelmaking furnace A heat processing furnace is provided with a bifurcated feeder which allows scrap steel to be introduced to the furnace from an associated preheater, and direct reduced iron, slag formers, carburizers, and other alloys to be introduced through a lower cha... | 09/01/1998 |
| 5788921 | Apparatus for electric steelmaking A burner/injector for providing a localized impingement flame or multiple flames for scrap heating and melting through use of a fluid fuel and at least one oxygen rich oxidizing gas. The burner/injector includes a liquid-cooled combustor for generating an... | 08/04/1998 |
| 5735935 | Method for use of inert gas bubble-actuated molten metal pump in a well of a metal-melting furnace and the furnace An inert gas bubble-actuated molten metal pump is located in a metal-melting furnace to effect circulation of molten metal throughout the furnace. The inert gas employed to actuate the molten metal pump is captured beneath a heat-resistant and flame-resis... | 04/07/1998 |
| 5685892 | Metallurgical furnace installation for use in copper smelting process and method for charging anode scrap into furnace A metallurgical furnace installation for use in copper-smelting process is disclosed which includes a metallurgical furnace, a charging assembly for introducing anode scrap into the furnace through an opening, and an impingement-preventing device attached... | 11/11/1997 |
| 5673900 | Reclamation of metal from scrap A process for recovering metal from scrap using a furnace having a bath chamber, a dry hearth chamber, an exhaust duct, and an incinerator for burning fumes from the dry hearth chamber is presented. The process includes conveying oxygen or oxygen enriched... | 10/07/1997 |
| 5643528 | Controlled magnesium melt process, system and components therefor Apparatus for a fully automated magnesium melt system. Raw magnesium ingots are moved through and controllably heated in a preheater chamber before they are introduced into a melt cell. A probe monitors the metal level and a control unit causes ingot char... | 07/01/1997 |
| 5628958 | Melt shop layout A melt shop for melting scrap steel comprises a pair of primary melting furnaces and a pair of refining facility stations. The layout for the primary melting furnaces, refining facility, associated support, and peripheral equipment and caster is a single-... | 05/13/1997 |
| 5520372 | Process and device for preheating scrap A process and installation for preheating scrap containing organic matter, in which flue gas is afterburned in an afterburner combustion chamber at a temperature at more than 1200° C. The after-burned hot flue gases are guided, without being cleaned, via... | 05/28/1996 |
| 5497977 | Process and apparatus for preheating and inserting scrap into a smelting furnace The invention is directed to a process and apparatus for preheating and transferring scrap into smelting furnaces for steelmaking or the like. The scrap is preheated by energy contained in the waste gases from the smelting furnace, which energy comprises ... | 03/12/1996 |
