| Patents for F27B 3 - Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces (6,383) |
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| 06/17/1997 | US5640709 Method and apparatus for producing a product in a regenerator furnace from impure waste containing a non-gasifiable impurity |
| 06/17/1997 | US5640706 Pollution control |
| 06/12/1997 | DE19545984A1 Cooling plate for refractory lining of electric arc furnace |
| 06/12/1997 | DE19545831A1 Two-vessel electric-arc furnace |
| 06/11/1997 | EP0777844A1 Apparatus and method for the supply of molten metal |
| 06/11/1997 | EP0777751A1 Method and apparatus for electric steelmaking |
| 06/11/1997 | CN2256090Y Bottom electrodes of D.C. electric furnace |
| 06/11/1997 | CN1151764A Method and device for directly feeding liquid metal from a ladle into ane lectric furnace |
| 06/03/1997 | US5635130 For steelmaking furnaces |
| 05/28/1997 | DE19543743A1 Control of quantity and preheat of air supply to regenerative, e.g. glass making furnace |
| 05/22/1997 | DE19543374A1 Base electrode structure for direct-current arc furnace |
| 05/15/1997 | WO1997017475A1 Process for melting and refining ferrous scrap through use of oxygen injection |
| 05/13/1997 | US5628958 Melt shop layout |
| 05/07/1997 | EP0772015A1 Method and apparatus for preheating and melting scrap |
| 05/07/1997 | EP0752924A4 Apparatus and method for starting a plasma arc treatment system |
| 05/07/1997 | CN1034816C Steel plant equipment with closed tiltable arc furnace |
| 05/02/1997 | EP0770690A2 Process and installation for treating iron-scrap remainders |
| 04/30/1997 | DE19625537C1 Method and apparatus for producing steel from scrap |
| 04/30/1997 | DE19539871A1 Smelting furnace, particularly of light-arc type |
| 04/30/1997 | CN1148815A Apparatus and method for vulcanizing harmful waste |
| 04/23/1997 | EP0769119A1 Furnace combustion assembly and method therefor |
| 04/23/1997 | CN1148410A Method for producing steel in an electric arc furnace, and electric arc furnace therefor |
| 04/22/1997 | CA2081295C Process for the continuous manufacturing of impurity and iron-free electrodes for electric arc furnaces |
| 04/16/1997 | EP0768017A1 Method and furnace for making a molten product |
| 04/16/1997 | EP0768016A1 A vertically lifted portable electric furnace |
| 04/16/1997 | EP0767843A1 Method and device for directly feeding liquid metal from a ladle into an electric furnace |
| 04/16/1997 | CN2252323Y Iron metal heater |
| 04/15/1997 | US5621751 Controlling electrode gap during vacuum arc remelting at low melting current |
| 04/10/1997 | DE19536932A1 Process for melting (non)metallic materials |
| 04/09/1997 | CN2251705Y Short net device for dc smelting furnace |
| 04/09/1997 | CN1147277A Base electrode of DC heated metallurgical vessel |
| 04/02/1997 | CN2251124Y Three-electrode dc ore-smelting electric furnace |
| 03/26/1997 | CN2250509Y Integrate structure open-hearth furnace tapping slot |
| 03/25/1997 | CA2039687C Method for operation of flash smelting furnace |
| 03/19/1997 | EP0653147A4 On-site, biohazardous waste disposal system. |
| 03/19/1997 | CN1145469A Melting method for electric arc furnace with alternative sources of energy and relative electric arc furnace |
| 03/18/1997 | US5613245 Method and apparatus for injecting wastes into a molten bath with an ejector |
| 03/18/1997 | US5611838 Supplying carriers and reducing agents into foamed slag; low energy |
| 03/18/1997 | CA2073097C Multi-layer fluid curtains for furnace openings |
| 03/12/1997 | EP0760868A1 Method for producing steel in an electric arc furnace, and electric arc furnace therefor |
| 03/12/1997 | EP0695280B1 Device for processing and vitrifying waste |
| 03/12/1997 | EP0572609B1 Process and device for melting scrap |
| 03/11/1997 | US5609481 Direct-fired stratified atmosphere furnace system |
| 03/11/1997 | CA2063562C Smelting plant with two adjacent smelting furnaces |
| 03/05/1997 | EP0760016A1 Scrap metal gravity feed method and apparatus |
| 03/05/1997 | EP0759797A1 Apparatus and method for vitrification of hazardous waste |
| 02/26/1997 | CN1143684A Aluminum melting with reduced dross formation |
| 02/20/1997 | WO1997006653A1 Bottom electrode for an arc furnace operated with direct current and process for operating the furnace |
| 02/20/1997 | WO1997006394A1 Metal fusion furnace and metal fusing method |
| 02/19/1997 | CN1143411A Charging device for arc furnaces |
| 02/18/1997 | US5603684 Method for vitrification of hazardous waste |
| 02/13/1997 | WO1997005438A2 Arc furnace in particular d.c. arc furnace, and process for preventing overheating of the furnace wall |
| 02/13/1997 | WO1997002366A3 Method and apparatus for after-burning atmospheric gases in a steel smelting arc furnace |
| 02/12/1997 | EP0758191A2 Deglor furnace |
| 02/12/1997 | EP0757972A2 Plasma furnace |
| 02/12/1997 | EP0757666A1 Metallurgical furnace vacuum slag removal |
| 02/11/1997 | US5602867 Method of and device for operating an arc furnace with two vessels |
| 02/05/1997 | EP0757109A1 Smelting aggregate and its use for production of steel in one process step, in particular direct current (DC) arc furnace or oxygen converter |
| 02/04/1997 | US5599375 Electric arc furnace equipped with auxiliary heat source |
| 01/30/1997 | WO1996041771A3 Performance-increasing, nitrogen oxide-reducing cross-firing of tank furnaces |
| 01/29/1997 | EP0756012A1 Decarburization refining process for chromium-containing molten metal, and associated top blowing lance |
| 01/29/1997 | CN2246277Y Top charging appts. of electrical furnace |
| 01/29/1997 | CN1141655A Loading device for feeding electric furnace |
| 01/29/1997 | CN1033918C Blowing lance suspension with integrated medium supply |
| 01/23/1997 | WO1997002366A2 Method and apparatus for after-burning atmospheric gases in a steel smelting arc furnace |
| 01/23/1997 | WO1997002365A1 Device for after-burning combustible components of the atmosphere in metallurgical smelting vessels |
| 01/23/1997 | WO1997002364A1 Method and apparatus for after-burning the combustible components of the atmosphere in metallurgical smelting vessels |
| 01/23/1997 | CA2225404A1 Method and apparatus for after-burning the combustible components of the atmosphere in metallurgical smelting vessels |
| 01/22/1997 | EP0754246A1 Apparatus for injecting gases or fluids in general and particulates, particularly for injecting oxygen, in furnaces for the production of steel |
| 01/22/1997 | CN1141113A Process and device for regulating the position of the tip of an electric furnace electrode |
| 01/22/1997 | CN1141112A Submerged Arc furnace with vertically movable frame |
| 01/21/1997 | US5596598 Electric melting device |
| 01/21/1997 | US5594999 Radiant wall oven and process for generating infrared radiation having a nonuniform emission distribution |
| 01/21/1997 | CA2054774C Direct current electric furnace for melting metal |
| 01/15/1997 | EP0752924A1 Apparatus and method for starting a plasma arc treatment system |
| 01/15/1997 | CN1140490A Non-oxidizing heating method and apparatus therefor |
| 01/15/1997 | CN1140471A Process for melting metal or non metal and material consisting of at least one hydrocarbyl polymer therefor |
| 01/15/1997 | CN1140251A Multifunctional industrial microwave energy heating reaction system |
| 01/15/1997 | CN1033823C Improved heater arrangement for aluminium refining systems |
| 01/09/1997 | DE19524215A1 Schmelzofen zur thermischen Behandlung von schwermetallhaltigen und/oder dioxinhaltigen Sonderabfällen Furnace for thermal treatment of heavy metal-containing and / or dioxin-containing hazardous waste |
| 01/08/1997 | EP0752568A2 Electric furnace and method for its operation |
| 01/08/1997 | EP0583253B1 Taphole design and pouring method |
| 01/08/1997 | CN2244708Y Nonferrous metal pool type flowing furnace |
| 01/07/1997 | US5591248 Method for melting metal, especially non-ferrous metal |
| 01/03/1997 | WO1997000413A1 Method for melting a batch in an electric arc furnace |
| 12/31/1996 | US5590152 DC arc furnace |
| 12/31/1996 | US5590151 Process for melting scrap iron in an electric furnace and installation for implementing the process |
| 12/31/1996 | US5590150 Electric arc melting furnace |
| 12/27/1996 | WO1996041896A1 Method for an improved energy input into a scrap bulk |
| 12/27/1996 | WO1996041771A2 Performance-increasing, nitrogen oxide-reducing cross-firing of tank furnaces |
| 12/27/1996 | EP0750170A1 Non-oxidizing heating method and apparatus therefor |
| 12/24/1996 | US5588018 Metallurgical container comprising a hearth bottom electrode |
| 12/19/1996 | WO1996041028A1 Combined oxygen blowing/fuel burner lance assembly |
| 12/19/1996 | WO1996040373A1 Vaporizable material injection into molten bath |
| 12/18/1996 | EP0748994A1 Direct-fired stratified atmosphere furnace system |
| 12/18/1996 | EP0748993A1 Aluminum melting with reduced dross formation |
| 12/18/1996 | EP0748982A2 Improved staged combustion method |
| 12/17/1996 | US5586140 Plasma melting method and plasma melting furnace |
| 12/17/1996 | US5585023 Vertical lifted portable electric furnace and method for use thereof |
| 12/12/1996 | DE19520649A1 Stickoxidmindernde Schrägpflammenbeheizung von Wannenöfen Nitric oxide-reducing Schrägpflammenbeheizung of furnaces |