| Patents for F27B 3 - Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces (6,383) |
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| 02/14/1995 | US5390212 Installation for producing molten metal in an electric furnace |
| 02/09/1995 | WO1995004250A1 Pushing machine movable on rail for operating into the slag hole of steel smelting electric furnaces |
| 01/31/1995 | US5385338 Apparatus for melting aluminum alloy scraps |
| 01/25/1995 | CN2188189Y Dust catcher for electric arc furnace |
| 01/25/1995 | CN2188188Y High-efficiency energy-saving hot-water stove |
| 01/24/1995 | US5383782 Gas-lance apparatus and method |
| 01/18/1995 | EP0633947A1 Method and device for processing free-flowing materials |
| 01/17/1995 | US5383218 Direct current melting furnace with control of deflection of the electric age |
| 01/17/1995 | US5382003 Flow control device for the suppression of vortices |
| 01/11/1995 | EP0633709A1 Operating process of a DC arcfurnace with a bottom electrode and refractory part for its realisation |
| 01/11/1995 | EP0633441A1 Smelting furnace for the thermal treatment of special wastes containing heavy metals and/or dioxine |
| 01/11/1995 | EP0493557B1 D.c arc furnace |
| 01/10/1995 | US5381441 Direct current arc furnace and method for its operation |
| 01/10/1995 | US5381440 Bottom electrode for direct current arc furnaces |
| 01/05/1995 | WO1995000671A1 Slag control method and apparatus |
| 01/04/1995 | CN1097060A Slag control method and apparatus |
| 01/04/1995 | CN1027314C DC electric arc furnace |
| 01/03/1995 | US5378260 Iron, oxidation, reduction |
| 01/03/1995 | US5377960 Oxygen/carbon blowing lance assembly |
| 12/27/1994 | US5375818 Slag control method and apparatus |
| 12/21/1994 | EP0629830A1 Installation for the production of liquid metal by scrap melting |
| 12/21/1994 | CN2185876Y Lead smelting reverberatory furnace |
| 12/20/1994 | US5375139 Electric arc furnace insitu scrap preheating process |
| 12/14/1994 | EP0628086A1 Tilting device for a direct current arc furnace and process for emptying the furnace. |
| 12/14/1994 | CN2185413Y Special arc furnace for producing catalyst |
| 12/14/1994 | CN2185412Y Continuous smelting kiln |
| 12/13/1994 | US5373530 Melting furnace with gas injection |
| 12/13/1994 | US5373529 Metals purification by improved vacuum arc remelting |
| 12/07/1994 | EP0627492A1 Smelting furnace with gas injector |
| 12/06/1994 | US5371759 D.C. furnace with a hearth electrode, hearth electrode and electrode block, as well as process for operating said furnace |
| 12/06/1994 | US5370369 Multipurpose burner designed for adjusting the supply of a reaction gas to be fed into a smelting furnace |
| 12/06/1994 | CA2028108C Melting aggregate with shaft for preheating charged materials |
| 12/03/1994 | CA2124776A1 Gas injector load smelting furnace |
| 11/30/1994 | EP0626549A1 Metallurgical smelting furnace such as a steelplant electric furnace and process using such a furnace |
| 11/30/1994 | EP0626547A1 Process and installation for the liquid steel production from carbon-rich ferruginous material |
| 11/30/1994 | CN2184176Y Pressurised electric tempering furnace |
| 11/29/1994 | US5368627 Treatment of oxide-containing dusts |
| 11/24/1994 | WO1994026938A1 Method for melting scrap iron in an electric furnace and equipment for applying this method |
| 11/23/1994 | EP0625685A1 Electric arc furnace with alternative sources of energy and operating method for such electric furnace |
| 11/23/1994 | CN2183545Y Cantilever atmosphere resistance furnace |
| 11/23/1994 | CN2183544Y High-efficiency heating smelting furnace |
| 11/22/1994 | US5367532 Furnace for the continuous melting of oxide mixtures by direct induction with high frequency, a very short refining time and a low energy consumption |
| 11/22/1994 | US5366536 Method of melting metals |
| 11/18/1994 | CA2122877A1 Electric arc furnace with alternative sources of energy and operating method for such electric furnace |
| 11/17/1994 | EP0624769A1 Process and installation for closing the bottom taphole of a metallurgical vessel |
| 11/16/1994 | CN2182971Y Box type electric resistance furnace |
| 11/15/1994 | US5365542 Anode for a direct current arc furnaces |
| 11/10/1994 | WO1994025814A1 Method and device for flame heating a vacuum chamber |
| 11/10/1994 | CA2161894A1 Process and means for flame heating of a negative pressure chamber |
| 11/09/1994 | EP0623797A1 Process and device for the flame heating of a low pressure chamber |
| 11/08/1994 | US5362033 Hot plate for keeping molten metal in a molten state |
| 11/02/1994 | EP0622597A2 Process and device for smelting metals, more particularly non-ferrous metals |
| 11/02/1994 | CN1094505A Direct current arc furnace and method for its operation |
| 11/01/1994 | CA2029750C Apparatus for holding and refining of molten aluminum |
| 11/01/1994 | CA2029118C Hearth arrangement for melting furnace |
| 10/27/1994 | WO1994024506A1 Apparatus for preheating and supplying scraps |
| 10/27/1994 | WO1994024504A1 Dc arc furnace |
| 10/27/1994 | WO1994024503A1 Dc arc furnace |
| 10/27/1994 | WO1994024060A1 Device for processing and vitrifying waste |
| 10/27/1994 | CA2160685A1 Device for processing and vitrifying waste |
| 10/26/1994 | EP0621454A1 Gas-lance and method for its use |
| 10/26/1994 | CN1094154A Briquette kiln for firing procelains |
| 10/25/1994 | US5358222 Apparatus for oxidizing pulverous fuel with two gases having different oxygen contents |
| 10/19/1994 | CN1093799A Electric-heating stove using carbon and inorganic metal oxidate as electrothermal body |
| 10/13/1994 | WO1994022785A1 Furnace elements made from graphite sheets |
| 10/05/1994 | EP0618420A1 Radial wall oven and process for generating infrared radiation having a nonuniform emission distribution |
| 10/05/1994 | CN1026152C Gleichstrom-lichtbogenofen |
| 09/29/1994 | WO1994022279A1 Furnace equipment |
| 09/29/1994 | DE4309640A1 Direct-current arc furnace plant |
| 09/28/1994 | EP0446237B1 Furnace for melting down scrap iron |
| 09/28/1994 | CN1092930A Bottom electrode in DC arc furnace and its cooling method |
| 09/27/1994 | US5351266 Process for continuous manufacture of impurity and iron-free electrodes for electric arc furnaces |
| 09/21/1994 | CN2177925Y High-temp. pot-string type waste steel preheating device |
| 09/20/1994 | CA1332069C Combination left and right handed furnace roof |
| 09/15/1994 | WO1994020791A1 Plasma fusion furnace and method of its operation |
| 09/14/1994 | CN1092154A Incline unit of DC arc furnace and method for thorough discharging of molten steel from furnace |
| 09/07/1994 | CN1091777A Method and apparatus for controlling of operation of double-furnace |
| 09/06/1994 | US5344122 Tubular rod and device for sampling and analyzing fumes and apparatus including such device |
| 09/01/1994 | WO1994019497A1 Method and apparatus for producing iron |
| 09/01/1994 | CA2156631A1 Method and apparatus for producing iron |
| 08/30/1994 | US5343491 Method of suppressing dust and fumes during electric steel production |
| 08/24/1994 | EP0612201A2 Improved heating apparatus for induction ladle and vacuum furnaces |
| 08/24/1994 | EP0611939A1 Device for lifting and moving the roof of a spray cooled furnace |
| 08/23/1994 | US5339753 Secondary air nozzle for furnaces |
| 08/17/1994 | EP0611270A1 Preheating device for a gaseous fluid |
| 08/17/1994 | CN2174670Y Steam spindle sealing apparatus for steam calcining furnace |
| 08/16/1994 | US5338329 Process and device for obtaining mineral fibers |
| 08/11/1994 | DE4303567A1 Production of synthetic diamonds |
| 08/10/1994 | EP0483322B1 Smelting plant with two adjacent smelting furnaces |
| 08/09/1994 | US5336085 Multi-layer fluid curtains for furnace openings |
| 08/03/1994 | EP0609196A1 Double chamber furnace for the charging of casting machines with molten metal |
| 08/03/1994 | EP0608591A1 Process and installation for running a double furnace plant |
| 08/03/1994 | CN1025569C One-way oxygen top-blown Martin furnace |
| 07/27/1994 | EP0607659A1 Refuse melting furnace |
| 07/26/1994 | US5333146 On-site, biohazardous waste disposal system |
| 07/26/1994 | US5332199 Metallurgical vessel |
| 07/13/1994 | CN2171832Y Horizontal hot blast furnace |
| 07/12/1994 | US5329545 Tuyere for installation in hearth of electric arc furnace |
| 07/07/1994 | WO1994014983A1 Tilting device for a direct current arc furnace and process for emptying the furnace |
| 07/06/1994 | EP0436718B1 Method of charging ore in melt-reduction |