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| Number | Title | Issue Date |
| 6953337 | Transfer of hot feed materials from a preprocessing plant to an electric smelting or melting furnace Apparatus for transferring hot material between a preprocessing plant and an electric furnace has an enclosed housing extending between the plant and the furnace and within which a controlled atmosphere is maintained, at least one bin having at least one compartment... | 10/11/2005 |
| 6700918 | Electric furnace for the production of metal oxides The furnace comprises a tubular inner chamber for the treatment of the raw material, mounted inside the enveloping body of the furnace which is insulated from the exterior and is provided with internal resistor systems for heating the chamber of the furna... | 03/02/2004 |
| 6660219 | Method and device for emptying metallurgic melting vessels by tipping The invention relates to the emptying of melting vessels (1) by tipping. According to the invention, the melting vessel (1) is placed on column-shaped bases (6). During the tipping process, the melting vessel (1) is raised at the side and the base support... | 12/09/2003 |
| 6219370 | Channel arrangement A channel arrangement for discharging molten metal from a smelting furnace, includes a channel (2) with two sidewalls (4, 5) and a channel bottom (6) made of a fireproof material. The channel (2) is arranged within a formwork trough (3) having receiving s... | 04/17/2001 |
| 6206941 | Apparatus and process for carbonization and activation of carbonaceous materials An apparatus for converting carbonaceous raw materials into a carbonized product and activating the product, includes a device for heating the carbonaceous raw materials to form a carbonized product, and equipment for activating the carbonized product and... | 03/27/2001 |
| 6157667 | Method and calcining furnace for electric calcining of carbonaceous material An electric furnace and method thereof for electric calcining of carbonaceous material for the production of graphite or graphite-containing material, wherein the carbonaceous material is supplied to the top of a vertically arranged furnace having a cylin... | 12/05/2000 |
| 5974076 | Apparatus for activation of carbonaceous char or reactivation of spent carbon by electrical resistance heating An apparatus for the activation or reactivation of a descending column of carbon in a tubular reactor that consists of two or more sequential sections, each section provided with an steam inlet, a graphite block positioned at its top, means to effect homo... | 10/26/1999 |
| 5903591 | Apparatus and process for activation of carbonaceous char or reactivation of spent carbon by electrical resistance heating An apparatus and process for the activation or reactivation of carbon in a tubular reactor that consists of two or more sequential sections, each section containing a descending column of carbon, with the inlets to introduce steam into any one or more of ... | 05/11/1999 |
| 5812587 | Apparatus and method for the supply of molten metal The present invention is concerned with an apparatus for supply of molten metal including a holding furnace pivotable about an axis having a metal chamber for holding molten metal, an outlet for supplying molten metal from said chamber and an inlet well c... | 09/22/1998 |
| 5715272 | Device for charging an electric furnace Charging device for supplying liquid metal to an electric furnace with a shaft 15, the device consisting of a balcony 19 extending the shaft 15 of the furnace 10 laterally and communicating with the hearth of the furnace 10.... | 02/03/1998 |
| 5694413 | Procedure and apparatus for continuous supply of heat in electrically conductive bulk goods The invention relates to a procedure for continuous supply of heat into electrically conductive bulk goods by exploiting the electrical resistance thereof in an oven chamber with an inlet opening and a drawing-off apparatus for continuous throughput of bu... | 12/02/1997 |
| 5544195 | High-bandwidth continuous-flow arc furnace A high-bandwidth continuous-flow arc furnace for stream welding applications includes a metal mass contained in a crucible having an orifice. A power source charges an electrode for generating an arc between the electrode and the mass. The arc heats the m... | 08/06/1996 |
| 5462259 | Tilting device for a D.C. arc furnace and process for emptying the furnace A tilting device for a direct current arc furnace and a process are disclosed for completely emptying the furnace while the furnace is operated with a continuous scrap supply through a lateral opening in the furnace vessel and removal bottoms. The scrap c... | 10/31/1995 |
| 5406582 | Apparatus and process for activation and reactivation of carbon by electrical resistance heating in the presence of steam An apparatus and process for the activation or reactivation of carbon in a tubular reactor that consists of two or more sequential sections, each section containing a descending column of carbon, with inlets to introduce steam into any one or more of the ... | 04/11/1995 |
| 5377220 | Apparatus for drying of granular or powdered carbon by electrical resistance heating An apparatus for drying moist or wet carbon particles in a series of tubular drying sections by electrical resistance heating where the current is introduced into the column of carbon particles through a graphite block positioned at the center of the top ... | 12/27/1994 |
| 5341394 | Furnace for melting materials with low melting point with improved casting duct The furnace for melting materials with a low melting point with improved casting duct comprises a furnace body which surrounds a crucible for containing the molten material and which is provided with first resistors for heating the crucible, the casting d... | 08/23/1994 |
| 5317592 | Direct resistance heating electrical furnace assembly and method of operating same A direct resistance heating electrical furnace of the type in which a bed of electrically conductive elements are located between two spaced electrodes in the furnace, and a method of controlling the operation of same, are provided. The furnace is of the ... | 05/31/1994 |
| 5287383 | Method and apparatus for producing active carbon using carbon-containing material An apparatus for producing an active carbon using a carbon-containing material inclusive of an used active carbon as a raw material wherein the carbon-containing raw material is carbonized in a carbonizing unit to produce a carbonized material having elec... | 02/15/1994 |
| 5265118 | Silicon carbide whisker production apparatus A silicon carbide whisker production apparatus manufactured by placing a plurality of lidded reaction vessels in the longitudinal direction of an Acheson furnace at intervals, packing graphite grains in the gaps between the adjacent reaction vessels and a... | 11/23/1993 |
| 5190901 | Method for producing active carbon using carbon-containing material A method and an apparatus for producing an active carbon using a carbon-containing material inclusive of an used active carbon as a raw material wherein the carbon-containing raw material is carbonized in a carbonizing unit to produce a carbonized materia... | 03/02/1993 |
| 5173921 | Apparatus and process for activation of carbon by electrical resistance heating in the presence of steam In an apparatus and process for the activation of carbon from carbon feedstocks by electrical resistance heating in the presence of steam, which comprises preheating particles of the carbon feedstock in a preheater, having the particles descend by gravity... | 12/22/1992 |
| 5089457 | Process for activation of carbon by electrical resistance heating in the presence of steam In an apparatus and process for the activation of carbon from carbon feedstocks by electrical resistance heating in the presence of steam, which comprises preheating particles of the carbon feedstock in a preheater, having the particles descend by gravity... | 02/18/1992 |
| 5057287 | Liquid encapsulated zone melting crystal growth method and apparatus A method and apparatus for growing an extended length single crystal of a Group III-V or II-VI material such as GaAs by moving a crucible containing a seed crystal and precompounded crystal material encapsulated in a molten encapsulant preferably vertical... | 10/15/1991 |
| 5044860 | Analysis of organic material This invention relates to apparatus for quantitatively analyzing a gaseous mixture for its components. A predetermined volume of a gaseous mixture of combustion products component is collected in a gas mixer up to a preselected pressure. A portion of the ... | 09/03/1991 |
| 4668287 | Process for producing high purity zirconium and hafnium This is a process for producing high quality zirconium or hafnium sponge. It is especially useful for producing the very high purity zirconium which may be used to line the inner surface zirconium of Zircaloy tubing for nuclear fuel rods. The process uses... | 05/26/1987 |
| 4624003 | Apparatus for heating electrically conductive bulk materials An apparatus for electrically heating conductive bulk materials by resistance Joule effect heating includes end and side walls defining an oven chamber having an inlet and an outlet. A plurality of pairs of generally planar electrode plates are angularly ... | 11/18/1986 |
| 4475207 | Graphitization furnace loading apparatus An apparatus 12 is specially adapted to conserve time, energy, labor and enhance safety when loading a column 10 of cylindrical carbon electrodes or carbon bodies of uniform cross section in end-abutting relationship into a lengthwise graphitization furna... | 10/02/1984 |
| 4430055 | Semi-continuous vacuum heat-treating furnace, and its operation process A semi-continuous vacuum heat-treating furnace of two-chambers and one-door type is composed of a vacuum heating chamber which includes a heating element and a heat insulation material, both being stable in chemical property and strength in vacuum conditi... | 02/07/1984 |
| 4422174 | Shaft furnace for heat treatment of materials A shaft furnace comprises a body (2) made up of superimposed heated sections (3,4,5,6 and 7) each of which is provided with a tubular member (10,11,12,13 and 14) having its walls arranged at an angle of 3 to 4 deg. to the longitudinal axis of the furnace.... | 12/20/1983 |
| 4399546 | Silicon carbide furnace Electrical resistance furnace and manufacturing plant for the preparation of silicon carbide utilizing a resistance core of carbon horizontally inserted within the load and having a broken ring configuration.... | 08/16/1983 |
| 4394766 | Graphitization system method and apparatus Amorphous carbon bodies forming a lengthwise series horizontal string or column 26 are converted to graphite by the Joule effect in a semi-cylindrical metal shell 20 with a refractory lining 22 and containing particulate thermal insulation medium 28. When... | 07/19/1983 |
| 4371971 | Sample loading mechanism A sample loading mechanism includes a hopper mounted to a base for positioning the hopper with respect to a furnace for releasably holding a relatively small sample in relation to a crucible used with the furnace. The hopper includes a floor with a movabl... | 02/01/1983 |
| 4357210 | Electric furnace for the calcination of carbonaceous materials The invention relates to an electric furnace for heating by passing a current through the charge, and more particularly, a continuous furnace in which the charge is a carbonaceous material. The furnace according to the invention is provided with a device for ... | 11/02/1982 |
| 4337373 | Furnace for fusing vanadium pentoxide powder In the fusion of vanadium pentoxide powder heat is generated in a melt of the powder by passing an electrical current along a current path in the melt and additional vanadium pentoxide powder is fed onto the surface of the melt. A furnace is used which ha... | 06/29/1982 |
| 4269398 | Means for reclaiming galvanizing quality zinc alloy from continuous galvanizing line top dross Means and a method for reclaiming galvanizing quality zinc alloy from the top dross of a continuous galvanizing line. A dross furnace is provided having front, rear and side walls and a hearth sloping from the rear wall toward the front wall. The front wa... | 05/26/1981 |
| 4127737 | Apparatus for reactivation of active carbon and the like The rotary drum of reactivation apparatus has spaced-apart helical electrodes disposed in mutually interposed helical state and fixed to the inner wall surface of the drum, these electrodes functioning upon rotation of the drum to propel by screw action a... | 11/28/1978 |
| 4003697 | Pressure furnace for treating products at high temperature and high pressure A pressure furnace for treating products at high temperature and high pressure includes a high pressure chamber formed of a vertical high pressure cylinder with end closures projecting into the cylinder and a press stand with a window aperture which is so... | 01/18/1977 |
| 3940245 | Convection shield for isostatic bonding apparatus A gas pressure bonding furnace having a convection shield with (1) monolithic tubular refractory insulation having its upper end surrounding the work receiving hot zone of the furnace and its lower end depending to a cool zone, (2) an impervious tubular m... | 02/24/1976 |
