| Patents for F27B 3 - Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces (6,383) |
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| 07/05/1994 | US5327453 Device for relief of thermal stress in spray cooled furnace elements |
| 07/05/1994 | CA2044534C Intermediate pressure electron beam furnace |
| 06/29/1994 | EP0603979A1 Device for relief of thermal stress in spray cooled furnace elements |
| 06/25/1994 | CA2111756A1 Tilting mechanism for a dc arc furnace and process for discharging the furnace |
| 06/23/1994 | WO1994013840A1 Flow control device for the suppression of vortices |
| 06/21/1994 | US5323417 Metallurgical vessel for direct-current arc equipment |
| 06/15/1994 | CN1025069C Smelting plant with shaft-like material preheater |
| 06/09/1994 | CA2084845A1 Flow control device for the suppression of vortices |
| 06/08/1994 | EP0600362A1 DC arc furnace and operation method |
| 06/08/1994 | EP0599895A1 Furnace with thermal insulation, and method of manufacture. |
| 06/07/1994 | CA2029285C Direct current electric arc furnace |
| 06/01/1994 | EP0599431A1 Steel plant incorporating a metallurgical vessel mounted in a circular support ring |
| 06/01/1994 | CN2167340Y Magnetic cutting electric arc furnace |
| 06/01/1994 | CN1024811C Air blowing and supply system at bottom of arc furnace |
| 05/31/1994 | US5317591 Direct-current arc furnace |
| 05/31/1994 | US5316270 Device for the charging of materials into a furnace and the preheating of these |
| 05/25/1994 | CN2166395Y Electrical character testing instrument for arc furnace |
| 05/18/1994 | CN1086894A Scrap conveyor |
| 05/17/1994 | US5311655 Method of manufacturing titanium-aluminum base alloys |
| 05/11/1994 | WO1994010348A1 Process and device for melting scrap |
| 05/11/1994 | CN1086596A Continuous slagging machine of Martin furnace and its process |
| 05/11/1994 | CA2147972A1 Process and device for the melting down of scrap |
| 05/10/1994 | US5310164 Method of tapping melt from a melt vessel |
| 05/04/1994 | CN2163999Y Pearlite bulking furnace with gas burner |
| 04/28/1994 | WO1994009332A1 Scrap conveyor |
| 04/28/1994 | DE4236510A1 Verfahren und Vorrichtung zum Einschmelzen von Schrott Method and apparatus for melting scrap |
| 04/28/1994 | DE4236080A1 Operation of arc furnace - correcting estimation of energy required from material weights and specific energies, using final melt temperature |
| 04/28/1994 | DE4235662A1 Protection for cooling tube walls of electric arc furnaces - by deposition of cladding of thermally conductive material. |
| 04/27/1994 | EP0594470A1 Process for the recovery of lead from the active material of waste batteries and electric furnace to carry out the process |
| 04/20/1994 | EP0592723A1 Continuous scrap preheating |
| 04/19/1994 | US5304230 Method of disposing of organic and inorganic substances and a plant for carrying out the method |
| 04/12/1994 | US5301928 Blowing lance suspension with integrated medium supply |
| 04/06/1994 | EP0590371A1 Secondary air nozzle for furnaces |
| 04/06/1994 | CN2160870Y Star-smoke exhausting hook for arc steel-smelting furnace |
| 03/30/1994 | EP0589150A1 Bottom electrode for direct current arc furnaces |
| 03/30/1994 | CN2160097Y Vibrative kiln |
| 03/30/1994 | CN1084631A Deslagging door of an electric-arc furnace |
| 03/29/1994 | US5297959 High temperature furnace |
| 03/23/1994 | CN1084115A Mechanical producing system for glass mosaic |
| 03/22/1994 | US5297160 Furnace electrode design |
| 03/22/1994 | US5297159 Direct current-light arc furnace |
| 03/16/1994 | EP0587518A1 Slagremoving door of an arc furnace |
| 03/16/1994 | CN1024045C DC electric-arc furnace |
| 03/15/1994 | CA2042020C Apparatus for melting down chips |
| 03/12/1994 | CA2106014A1 Process for the recovery of lead, especially the lead contained in active substances of used batteries and in electric furnaces used for implementing said process |
| 03/10/1994 | DE4229371A1 Regulating arc in metal melting, welding or plasma process - includes using second order differential of arc current w.r.t. time as regulating parameter |
| 03/02/1994 | EP0584401A2 Low NOx regenerative melting tank |
| 03/01/1994 | US5291513 Method and device for exhausting gases or fumes from a metallurgical container and an electric furnace provided with said exhaust device |
| 03/01/1994 | CA1327275C Method for continuous reduction in pyrometallurgical processes with pellets |
| 02/23/1994 | EP0583253A1 Taphole design and pouring method. |
| 02/23/1994 | CN1082701A Direct current melting furnace with control of deflection of the electric arc |
| 02/16/1994 | CN2156460Y Top lid split open air circulation electric furnace |
| 02/16/1994 | CN1082186A Bottom electrode of DE arc furnace |
| 02/15/1994 | US5287382 Wall electrode for a DC electric metallurgical furnace |
| 02/03/1994 | WO1994003029A1 On-site, biohazardous waste disposal system |
| 02/03/1994 | CA2141202A1 On-site, biohazardous waste disposal system |
| 02/02/1994 | EP0581112A1 Direct current melting furnace with control of deflection of the electric arc |
| 02/02/1994 | EP0580693A1 Trap trench. |
| 01/26/1994 | EP0472721B1 Direct current electric furnace |
| 01/19/1994 | EP0579146A1 Cooled wall element for metallurgical furnace |
| 01/19/1994 | CN1080987A Method and apparatus for oxidizing pulverous fuel with two gases having different oxygen contents |
| 01/13/1994 | DE4222854A1 Base electrode for direct current arc furnaces - with metal rods arranged in hearth base, with non-conducting refractory layers surrounding the rods |
| 01/12/1994 | EP0578596A1 Furnace, in particular electric furnace for the treatment of molten metal |
| 01/07/1994 | CA2099807A1 Furnace, especially electric furnace, for processing liquid metal |
| 01/06/1994 | WO1994000400A1 Refractory ceramic compound for lining the floors of electric-arc furnaces and a method of repairing them |
| 01/05/1994 | DE4221101A1 Feuerfeste keramische Masse zur Auskleidung von Böden an Elektro-Lichtbogenöfen und Verfahren zu deren Reparatur Refractory ceramic mass for lining shelves in electric arc furnaces and methods of repair |
| 01/05/1994 | CN2152193Y Two layer open-hearth furnace spray head |
| 01/05/1994 | CN1080391A Process for maintaining a high temperature reactor with continuous charging |
| 12/29/1993 | CN1080043A Method for melting copper |
| 12/28/1993 | US5274663 Direct-current arc furnace plant |
| 12/28/1993 | US5274662 Remelting arc furnace with movable electrode |
| 12/22/1993 | EP0395692B1 Low temperature kiln |
| 12/22/1993 | CN2150508Y Cooper-steel composite water-cooling AC electric-arc furnace floor positive electrode |
| 12/14/1993 | US5269236 Method and apparatus for preventing the adhesion of dust in an incinerator or melting furnace |
| 12/09/1993 | WO1993024665A1 Method for melting copper |
| 12/08/1993 | EP0572609A1 Process and device for melting scrap. |
| 12/08/1993 | CN2148934Y Wet type dust collector for cement shaft kiln |
| 12/02/1993 | DE4317733A1 Gas-supply adjuster for melting furnace - delivers in separate currents to reaction chamber and adjusts their outlet speeds |
| 12/02/1993 | DE4317732A1 Powder fuel oxidation method for melting furnace - delivers three air currents downwards round hollow current of oxygen |
| 12/01/1993 | EP0571732A2 Metal smeltfurnace |
| 12/01/1993 | EP0571731A2 Installation for metal smelting |
| 12/01/1993 | EP0571605A1 Vacuum processing of particulate reactive metal |
| 11/30/1993 | US5267259 Induction crucible furnace with sonically uncoupled accessible furnace platform |
| 11/25/1993 | DE4226867C1 Resistance heated open furnace for silicon carbide prodn. - has multi-limb resistive core connected to poly phase supply |
| 11/24/1993 | CN2147489Y Single-side charge and discharge horizontal industrial furnace |
| 11/23/1993 | US5265117 Method of exhausting gases and fumes from an electric arc furnace utilizing additional inlet gas duct ensuring constant pressure |
| 11/23/1993 | US5264020 Smelting plant with two melting furnaces arranged in juxtaposed relationship |
| 11/23/1993 | US5263690 Apparatus for metallurgical treatment of molten steel |
| 11/12/1993 | CA2071742A1 Melter/holder control system |
| 11/09/1993 | US5260966 Remelting arc furnace with movable electrode |
| 11/09/1993 | CA2075269A1 Tank furnace for low pressure, electrically heated by means of spiral resistances placed above the level of the bath |
| 11/03/1993 | EP0567621A1 Melt-in aggregate with furnace cradle |
| 10/28/1993 | DE4313360A1 Melting aluminium@ alloy scrap - with vortex motion of liq. melt produced by means of a magnetic field generator |
| 10/19/1993 | US5255285 Feedback control system for the impedance control of an electric arc furnace |
| 10/19/1993 | US5255284 Anode for an electic arc furnace utilizing electrode segments |
| 10/19/1993 | US5254818 Microwave melting furnace for the vitrification and/or densification of materials |
| 10/19/1993 | US5254001 Hot replaceable tuckstones for industrial furnaces |
| 10/14/1993 | WO1993020252A1 Method and device for processing free-flowing materials |
| 10/14/1993 | CA2133328A1 Method and device for processing free-flowing materials |
| 10/13/1993 | EP0564963A2 Method for the maintenance of a continuously charged high temperature reactor |