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| Number | Title | Issue Date |
| 7108808 | Method for waste vitrification A waste vitrification apparatus (10) having rotatable mixer impeller (16) functioning as a shaft electrode (60) and metallic vessel (14) functioning as a vessel electrode (62). A stream (12) of waste material and vitrifiable... | 09/19/2006 |
| 7040122 | Process for production of molten glass The invention concerns a process and a device from the production of molten glass. According to the invention, measures will be taken to lead the current of the molten glass through the tank furnace so that cutoffs of the glass current between the surface of ... | 05/09/2006 |
| 6983006 | All-electric glass-melting deep furnace and method of refining and supplying glass An all-electric glass-melting deep furnace and a method of refining and supplying glass are disclosed in which high-quality molten glass is efficiently produced in large quantity at high heat efficiency. The glass-melting deep furnace 20 has a bottom 2... | 01/03/2006 |
| 6889527 | Skull pot for melting or refining inorganic substances, especially glasses and glass ceramics The invention relates to a skull pot (1) for melting, crystallizing or refining inorganic substances. Said pot comprises a pot wall (1.1), a pot bottom (1.2), an induction coil (2) which surrounds the pot wall (1.1) and by means of... | 05/10/2005 |
| 6880365 | Use of sintered refractory material based on tin oxide for producing glass furnace throats The use of blocks (1, 2, 3, 4) based on sintered tin oxide for producing the throat of a glass furnace. ... | 04/19/2005 |
| 6817212 | Skull pot for melting or refining glass or glass ceramics The invention relates to a skull pot for melting or refining glass or glass ceramics, comprising a pot wall (1), a pot base, and an induction coil (3) which surrounds said pot wall and through which high-frequency energy can be coupled into the content... | 11/16/2004 |
| 6795484 | Method and system for reducing a foam in a glass melting furnace Provided is a method for reducing or removing a foam present in a glass melting furnace, including providing an ultrasonic energy emitted from at least one ultrasonic energy source to a foam present above the surface of a molten material in a glass melting furnace. ... | 09/21/2004 |
| 6751989 | Device and method for melting or refining glass or glass ceramics The invention relates to a device for melting or refining glass or glass ceramics. According to the invention, a device of this type is provided with the following characteristics: a plurality of tubes which are U-shaped and arrange side by side so that they form a ... | 06/22/2004 |
| 6154481 | Method of operation of a glass melting furnace and a glass melting furnace for the practice of the method In a glass melting furnace, a radiation screen wall is installed between a melting area and a refining area with a refining bank. This radiation screen wall leaves a flow path above the melt surface of the glass bath for the return flow of at least part o... | 11/28/2000 |
| 6125658 | Glass furnace and installation comprising same The invention relates to the electric melting technique, in which the melting energy is dissipated in the bath of melted glass as a result of the Joule effect by means of electrodes which dip through the surface of the bath. According to the invention, th... | 10/03/2000 |
| 6085551 | Method and apparatus for manufacturing high melting point glasses with volatile components In the manufacturing of high melting point glasses with volatile components, in particular of glasses from the group of boron glasses and borosilicate glasses, a furnace is provided that has a superstructure, fossil fuel burners, and a melting tank. In fr... | 07/11/2000 |
| 6044667 | Glass melting apparatus and method A system for melting and delivering glass to a work area such as spinners for making fiberglass includes a melter with heaters so arranged that the "hot spot" in the molten glass is located away from the walls and corrosion sensitive parts so that the var... | 04/04/2000 |
| 5327452 | Forehearth A forehearth for a glass furnace comprises a trough and roof over the trough, the roof having two longitudinal ridges extending downwardly towards the surface of the glass to define three longitudinal chambers. The central chamber forms a conduit for the ... | 07/05/1994 |
| 5319669 | Hazardous waste melter An apparatus for processing various hazardous waste materials by melting in a vessel for subsequent solidification is disclosed which includes a seal for the cover thereof. Melter includes a high-speed mixing impeller powered by a drive shaft which extend... | 06/07/1994 |
| 5304701 | Melting furnace for treating wastes and a heating method of the same A melting furnace for treating wastes is provided which has a container equipped with a feed port for a glass raw material and wastes to be treated at the top thereof and a discharge port for molten glass containing said wastes at the bottom thereof, the ... | 04/19/1994 |
| 5271032 | Lid heater for glass melter A glass melter having a lid electrode for heating the glass melt radiantly. The electrode comprises a series of INCONEL 690 tubes running above the melt across the melter interior and through the melter walls and having nickel cores inside the tubes begin... | 12/14/1993 |
| 5241558 | Vertical glass melting furnace A vertical glass melting furnace of the type having an inlet for raw materials at the top thereof, an outlet for molten glass at the bottom thereof, and a tabular electric resistance heating element for melting which is immersed at some level in molten gl... | 08/31/1993 |
| 5218615 | Furnace lining and lining brick therefor with improved heat absorbing characteristics A furnace lining is formed by a plurality of lining bricks. The bricks have surfaces defining an internal surface of the lining that is to face the interior of the furnace and to receive therefrom radiant heat. At least one depression is formed in the lin... | 06/08/1993 |
| 5173919 | Manipulation of the exit gas flow in a melting furnace In a melting furnace (1), toxic, volatile chemical compounds from introduced filter dust from industrial incineration units are vaporized at about 1300° C. and forced to leave the reaction space. The non-vaporizing residue forms a glassy melt which is di... | 12/22/1992 |
| 5151918 | Electrode blocks and block assemblies Electrode blocks and multiple-piece assemblies are provided for electric, glass-melting furnaces to reduce the occurrence and extent of cracking which occurs in monolithic electrode blocks from thermal stresses induced by a high temperature gradient betwe... | 09/29/1992 |
| 5131005 | Melting apparatus having double wall structure A melting apparatus in which a material to be melted is accommodated in a crucible made of platinum or its alloy, and electric current passes through the crucible to generate heat ot melt the material. At least a part of the crucible is formed into a doub... | 07/14/1992 |
| 4903277 | Electric melting furnace with partitioned melting cavity for solidifying highly radioactive waste in glass An electric melting furnace for solidifying highly radioactive waste in glass has a melting cavity made of a non-conductive refractory and adapted to melt a raw material consisting of highly radioactive waste and a glass material by passing a current betw... | 02/20/1990 |
| 4819247 | Glass melt furnace The improved joule effect glass melt apparatus and method of using the apparatus delivers isothermal glass to a glass forming bushing and reduces the erosion of refractory at high melt temperatures by isolating the refractory from joule effect currents. T... | 04/04/1989 |
| 4812372 | Refractory metal substrate and coatings therefor A refractory metal substrate suitable for use in contact with an oxygen- or nitrogen-containing environment at a temperature greater than the oxidation or mitridation acceleration temperature of the substrate is disclosed. The refractory metal substrate c... | 03/14/1989 |
| 4796276 | Melting furnace A method for melting thermosplastic material is disclosed. A protective liner for the interior of the furnace protects the refractory walls of the furnace from corrosion caused by the molten thermoplastic material. The improvement comprises confining a th... | 01/03/1989 |
| 4782497 | Electric melting furnace for glassifying high-radioactive waste An electric melting furnace for glassifying high-radioactive waste characterized in that, in a furnace for melting glass containing platinum-group elements which has an outlet of glass at the bottom part of a melting tank, the bottom of the furnace surrou... | 11/01/1988 |
| 4666495 | Apparatus for manufacturing stria-free, bubble-free and homogeneous quartz-glass plates A method of manufacturing practically stria-free, bubble-free, and homogeneous quartz-glass plates of any desired configuration and with a surface area that exceeds the cross-section of the full circular quartz-glass cylinder that is employed as a startin... | 05/19/1987 |
| 4660211 | Melting furnace for vitrifying highly radioactive waste The invention relates to a melting furnace for vitrifying highly radioactive waste, comprising a melting tank of refractory material and a furnace upper section enclosed by insulation and a steel container. The furnace contains electrodes of ceramic block... | 04/21/1987 |
| 4627069 | Joule melter for the processing of radioactive wastes The joule melter has an outer cylindrical electrode which forms the outer wall of the melt containment, an inner cylindrical electrode which protrudes upward in the containment and forms the outlet for the melt, thus, also determining the depth of the mel... | 12/02/1986 |
| 4618962 | Furnace bottom heating Electrically energizable heating means are disclosed for supplying heat to a bottom portion of a melting furnace having a metal lined refractory vessel, wherein the heating means are in the form of electrodes or resistance heaters which are protected from... | 10/21/1986 |
| 4611331 | Glass melting furnace A glass melting furnace is disclosed having a refractory melting vessel provided with a protective liner formed of an oxidizable refractory metal such as molybdenum, wherein the liner projects upwardly within a molten bath contained within the vessel and ... | 09/09/1986 |
| 4610016 | Industrial furnace A characteristic feature of the furnace disclosed in the present invention is the presence therein of additional current-carrying elements with the free end thereof sunk relative to the effective area of the furnace brickwork. The elements are connected w... | 09/02/1986 |
| 4541098 | Refractory electrode blocks with improved retaining means An assemblage of electrode blocks peripherally supported on the bottom wall of an electric glass-melting furnace, having apertures for positioning electrodes therethrough and having horizontal grooves cut between adjacent vertical sides with a key positio... | 09/10/1985 |
| 4514851 | Arc circuit electrodes for arc glass-melting furnace An arc glass-melting furnace comprising: a chamber adapted for holding a body of molten glass, such chamber including means for supplying batch material thereto and means for withdrawing molten glass therefrom; an arc electrode positioned in the chamber a... | 04/30/1985 |
| 4491951 | Electric glass melting furnace A glass heating method and apparatus, such as a glass melting furnace or a forehearth, utilizing a refractory lining and electrically energized heating electrodes. The refractory lining is an erosion resistant material, preferably a chromic oxide refracto... | 01/01/1985 |
| 4377405 | Method for the production of flat, transparent vitreous silica slabs of low bubble content Flat, transparent slabs of vitreous silica of optical quality are produced by melting granular starting material in a vacuum by means of an electrical heating system. The starting material is melted while sustaining a heat flow from the top to the bottom ... | 03/22/1983 |
| 4366571 | Electric furnace construction A method and apparatus for melting thermoplastic material is disclosed utilizing, in a preferred embodiment, a vessel having a bottom wall and upstanding sidewalls. A protective liner for the vessel is provided, being formed of corrosion resistant materia... | 12/28/1982 |
| 4348767 | Wedge shaped electrode block An electrode block for use in the bottom wall of an electric glass-melting furnace comprising a body of refractory material having an aperture therein which is suitably sized to mate with an electrode, the body having a top and bottom and at least one sid... | 09/07/1982 |
| 4325693 | Device for heating open melting baths A device for heating open melting baths, especially galvanizing baths, enameling baths, lead coating baths, metal baths, and glass baths, and the like, in tubs, or vats or tanks, wherein an inert gas is circulated through components of the open baths whic... | 04/20/1982 |
| 4320244 | Melting furnace for the production of mineral wool insulation A melting furnace for the production of mineral wool insulation in the nature of a receptacle closed by a cover or crown through which spaced carbon electrodes extend from an external support and also through which particulate stock material is introduced... | 03/16/1982 |
