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| Number | Title | Issue Date |
| 7447250 | Electrostatic suspension furnace and method for fusing samples using this An electrostatic levitation furnace wherein main electrodes opposed to each other within a vacuum chamber are arranged at intervals to form interspaces between them. Auxiliary electrodes are arranged to correspond to each of the electrostatic field generating inters... | 11/04/2008 |
| 7061964 | Electrostatic levitation furnance An electrostatic levitation furnace is improved by providing three pairs of electrodes opposed to each other respectively on three axes perpendicularly intercepting each other at a position where the sample is to be levitated in the vacuum chamber, and disposing a p... | 06/13/2006 |
| 6919063 | Carbon nano-particle and method of preparing the same and transparent conductive polymer composite containing the same The present invention relates to a novel carbon nano-particle and a novel method of preparing the same and a transparent, conductive polymer composite containing the same. The carbon nano-particle has the mean diameter of 1 through 50 nm and the shape of sphere, rod... | 07/19/2005 |
| 6765949 | Carbon nanostructures and methods of preparation An electric arc furnace and method for forming tubular carbon nanostructures comprising a first electrode (cathode) and an a second electrode (anode) opposite the first electrode, sources of voltage (V) and current (A) to create charged particles (Ie) and produce an... | 07/20/2004 |
| 6466605 | Concentric electrode DC arc system and their use in processing waste materials An electrode assembly comprising concentric tubular electrodes is provided for high temperature processing of materials. The electrode assembly is connected with a power supply that includes switching means for alternatively operating the electrode assemb... | 10/15/2002 |
| 6424672 | Device for producing slag in an electric arc furnace An electric arc furnace (1), wherein solids are injected into the furnace chamber. The lances (9, 10, 11) are guided through the wall (12) of the electric arc furnace (1) and inserted into the wall of the furnace, whereby at least one lance is associated ... | 07/23/2002 |
| 6400748 | Method for operating an electric arc furnace to build up and maintain foamed slag In order to operate an electric arc furnace (1) in optimum conditions, especially in order to build up and maintain a certain intensity of foamed slag, the amount of slag builder fed into the furnace (1) and therefore the power consumption of the furnace ... | 06/04/2002 |
| 6289035 | Mounting arrangement for auxiliary burner or lance A mounting block and an improved mounting arrangement for apparatus used in metal melting, refining and processing, particularly those apparatus adapted to steel making in an electric arc furnace, such as burners, lances and the like with supersonic oxyge... | 09/11/2001 |
| 6175584 | Aspiration system to reduce the losses of fine materials and powders from an electric arc furnace Aspiration system to reduce the losses of fine materials and powders from an electric arc furnace having a lower hearth suitable to contain the bath of metal material being melted, a substantially cylindrical chamber arranged above the hearth, at least on... | 01/16/2001 |
| 6081545 | ARC furnace improved fume collection An arc furnace fume collection system has a plurality of duct lines leading to a common duct that leads to a baghouse for filtering dust. The supplemental duct lines have high pressure fans, blowers, or compressors and join one of the other duct lines thr... | 06/27/2000 |
| 6038245 | Process for melting a charge in an electrical arc furnace Provided is a process for melting a charge in a furnace. Energy of fusion is supplied to the charge, and gases including at least one combustible gas are generated during the the melting. A post-combustion of the combustible gas is performed by injecting ... | 03/14/2000 |
| 5926498 | Melting furnace for the thermal treatment of special waste materials containing heavy metal and/or dioxin A melting furnace for the thermal treatment of special waste materials containing heavy metal and dioxin is provided. The melting furnace includes a main furnace vessel, the main furnace vessel having a melting end for receiving a melt, and a gas chamber ... | 07/20/1999 |
| 5896409 | Fume intake and cooling device for electric arc furnaces Fume intake and cooling device for intake conduits (11,111,211) in electric arc furnaces (26a,26b), comprising a containing structure (28) associated at one end (12) with an aperture on the roof of the furnace and connected at the second end (13) with an ... | 04/20/1999 |
| 5822357 | Process for melting a charge in a furnace A charge of scrap is melted in a furnace (1) with post-combustion of the fumes by injection of an oxygenated gas into the space in the furnace above the charge. During periods of post-combustion, the oxygenated gas is injected in the form of several jets ... | 10/13/1998 |
| 5802097 | Melting method for an electric ARC furnace with alternative sources of energy and relative electric ARC furnace with special burner positioning Melting method for an electric arc furnace with alternative sources of energy for the melting of iron-based alloys, the electric furnace (10) including tuyeres (13) positioned on the bottom to deliver oxygen, at least one tuyere (15) to deliver coal dust ... | 09/01/1998 |
| 5734673 | Waste-melting furnace and waste-melting method A waste-melting furnace includes a furnace body, a rotary heat-resistive vessel which is arranged inside the furnace body and into which waste is to be fed, and a transferred arc type torch plasma gun and a water-cooled electrode arranged above the rotary... | 03/31/1998 |
| 5573573 | Electric arc furnace arrangement for producing steel There is disclosed an electric arc furnace for the production of steel by melting scrap, in particular iron scrap, and/or sponge iron and/or pig iron as well as fluxes in a furnace vessel, into which at least one graphite electrode projects, which is disp... | 11/12/1996 |
| 5471495 | Electric arc furnace arrangement for producing steel There is disclosed an electric arc furnace for the production of steel by melting scrap, in particular iron scrap, and/or sponge iron and/or pig iron as well as fluxes in a furnace vessel, into which at least one graphite electrode projects, which is disp... | 11/28/1995 |
| 5467365 | Process for the recovery of lead arising especially from the active material of spent batteries, and electric furnace intended especially for the use of the process An electric furnace (containing an immersed electrode) and a process for the recovery of lead, arising especially from solid residues. Fines, which are a product of physically crushing spent batteries, are melted under not very reducing conditions in the ... | 11/14/1995 |
| 5392312 | Method and device for regulating the combustion air flow rate of a flue rate gas collection device of a metallurgical reactor, corresponding collection device and metallurgical reactor In order to regulate the combustion air flow rate of a flue gas collection device (1) of a metallurgical reactor (2) comprising a combustion chamber (4) supplied with air by a variable flow fan (9), a set value C0 for the oxygen content in the ... | 02/21/1995 |
| 5373530 | Melting furnace with gas injection A furnace comprises a space overlying a charge into which space opens at least one oxygenated gas injector passing through the periphery of the furnace to deliver within this space a jet of gas that is nonradial relative to a vertical axis of the space. E... | 12/13/1994 |
| 5245627 | Use of a radiating arc furnace for treating a dross containing a metal in order to recover this metal A process is disclosed, for treating dross containing a metal such as aluminum, in order to recover this metal, In this process, the dross to be treated is introduced into a rotary or oscillating furnace, in which it is heated to a temperature above the m... | 09/14/1993 |
| 5228052 | Plasma ashing apparatus A plasma ashing apparatus has a vacuum treatment chamber for receiving therein a substrate coated with a resist film, a reactive gas introduction pipe equipped with a plasma applicator, a vacuum exhaust pipe, a heating means for heating the substrate, and... | 07/13/1993 |
| 5166950 | Process and apparatus for melting a furnace charge Process for melting a furnace charge, with post-combustion of the smokes by njecting an oxygenated gas in the furnace atmosphere as a series of jets flowing according to a tangential component in the space between electrodes and cylindrical furnace partiti... | 11/24/1992 |
| 5068860 | Helical wiggler device with permanent magnets for application to free electron lasers Disclosed is a magnetic assembly setting up a helical field of variable amplitude along the axis of the helix, using permanent magnets. The disclosed device is a wiggler with adiabatic insertion for application to free electron lasers and, for this use, i... | 11/26/1991 |
| 4965813 | Combustion aiding apparatus for steel-making electric-arc-furnace A combustion aiding apparatus for a steel-making electric-arc-furnace characterized by installing a combustion aiding burner on a balcony having an inspection-and-working opening through which to drop tapping hole filling-agent and also by making the nozz... | 10/23/1990 |
| 4827486 | Process for increasing the energy input in electric arc furnaces To save energy in the production of steel in an electric arc furnace while increasing the total input of energy, the employment of carbonaceous fuels and oxygen-containing gases is proposed. The oxygen or the oxygen-containing gases are led into the furna... | 05/02/1989 |
| 4804395 | Electrode arrangement for lensing method A system is provided for positioning a pair of electrodes on either side of the end portion of an optical fiber extending through a contact, to establish an arc through a cross-aperture in the contact and across the fiber to melt the fiber into a lens, wh... | 02/14/1989 |
| 4755203 | Optic fiber positioning for lensing method A system is described for forming a lens at the end of an optical fiber which extends through a hole in a contact, so the tip of the lens lies at a desired lens position located a predetermined distance rearward of the tip of the contact. The fiber is fix... | 07/05/1988 |
| 4743283 | Alternating current arc for lensing system and method of using same A system is provided for forming an end of an optical fiber into a lens, which produces a lensed fiber having an especially smooth lens surface and high strength near the intersection of the lens and the rest of the fiber. A lens is formed by establishing... | 05/10/1988 |
| 4740989 | Plant for producing steel from scrap A plant for the production of steel from scrap and optionally fluxes includes a shaft furnace section having a bottom to receive a liquid sump of premelt and heating means laterally entering into the lower part of its interior. A hearth type furnace secti... | 04/26/1988 |
| 4730336 | Oxy-fuel burner system A method is disclosed for modifying an electric arc furnace to include oxy-fuel burners to assist in the melting of scrap metal by forming an endless melt trench in the scrap metal. Methods of melting scrap metal using an endless melt trench in such a fur... | 03/08/1988 |
| 4706258 | Scrap melting method An improvement to a scrap melting method employing an electric arc furnace, which comprises the step of heating the scrap by a powdered coal burner prior to the step of heating the scrap by the electric arc. The burning conditions are controlled so as to ... | 11/10/1987 |
| 4646315 | Arc furnace burner control method and apparatus An electric arc furnace having at least one electrode and a burner and first and second supply systems for respectively supplying an oxygen containing gas and fuel to the burner. An exhaust gas conduit is connected to the furnace and includes a first damp... | 02/24/1987 |
| 4569733 | Method of treating rock to recover metal, oxygen, and water Rock is melted between electrodes and the resulting melt is subjected to electrolysis to recover oxygen and selected metals therefrom and to produce a melt of a unique composition so that it can be cast to produce structures with various properties.... | 02/11/1986 |
| 4485476 | Apparatus and process for preparing high temperature reaction products According to the invention, there are provided improved apparatus and process for preparing high temperature reaction products in an electric furnace. Into the furnace, a combustible material and an oxygen-containing gas are fed by means of a suction-type... | 11/27/1984 |
| 4425092 | System for burning fine-grained material, particularly for the manufacture of cement clinkers The invention relates to a method for burning fine-grain material, particularly for the manufacture of cement clinker from cement raw meal. The material is thermally treated in a multi-stage burning process with a pre-heating stage, a calcining stage with... | 01/10/1984 |
| 4247732 | Method and apparatus for electrically firing an iron blast furnace A blast furnace for reducing iron ore characterized by a vertical tubular refractory shell forming an upper reduction zone and a lower hearth which shell is adapted to contain a charge of iron ore and ore reductance, at least one arc heater mounted on the... | 01/27/1981 |
| 4156102 | Method for producing ferro-alloys An improved method and apparatus for producing ferro-alloys from ore in which an ore is first mixed with a solid reducing agent, preheated and pre-reduced in a rotary kiln, and smelted in an electric furnace, in which the pre-reduced ore is heated by a bu... | 05/22/1979 |
| 4133967 | Two-stage electric arc - electroslag process and apparatus for continuous steelmaking A conventional electric arc furnace is provided with an outlet in a sidewall of the furnace, the inner and outer ends of which are positioned such that the outer end of the outlet is higher than the inner end of the outlet. The outer end of the outlet com... | 01/09/1979 |
