| Patents for F27B 3 - Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces (6,383) |
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| 08/16/1989 | EP0327862A2 A process of and an apparatus for post combustion |
| 08/15/1989 | US4856576 Zirconium oxide suspended in aqueous gel of zirconyl nitrate and ammonium hydroxide; for painting surfaces of copper crucible |
| 08/15/1989 | CA1258377A1 Process and device for the fusion of light metals |
| 08/02/1989 | EP0183631B1 Wall electrode for a metallurgical direct current electrical furnace |
| 08/02/1989 | CN2042181U Energy-saving far-infrared resistance stove |
| 08/01/1989 | US4853941 D.C. arc furnace having electrically conductive hearth and method for making same |
| 07/25/1989 | US4850577 Melting and holding furnace |
| 07/19/1989 | CN1034054A Continuous bakeout oven for ferro-alloy |
| 07/18/1989 | US4849987 Combination left and right handed furnace roof |
| 07/12/1989 | CN1033872A Isothermic radiant furnace |
| 06/28/1989 | EP0321861A2 Tiltable metallurgical vessel |
| 06/28/1989 | CN2040242U Low-temp. drying stove |
| 06/28/1989 | CN2040241U Continuous far-infrared tempering stove |
| 06/27/1989 | US4843614 Metallurgical vessel |
| 06/27/1989 | US4843234 Consumable electrode length monitor based on optical time domain reflectometry |
| 06/20/1989 | US4841542 Electric furnace arrangement |
| 06/13/1989 | US4839904 Apparatus for the melting of metals |
| 06/06/1989 | US4837423 Low temperature kiln |
| 06/06/1989 | US4836732 Method and apparatus for continuously charging a steelmaking furnace |
| 06/06/1989 | US4836510 Metallurgical plant |
| 06/06/1989 | CA1255352A1 Shroud for arc furnace |
| 05/31/1989 | EP0174991B1 Circumferential sealing assembly |
| 05/24/1989 | CN1033099A Improved stove |
| 05/17/1989 | CN2037836U Vaporization cooler for the head of tilting open hearth |
| 05/17/1989 | CN2037835U Vacuum-chamber type heat-insulating device for box furnace |
| 05/17/1989 | CN2037737U Horizental annealer |
| 05/16/1989 | US4830610 High temperature convection furnace |
| 05/10/1989 | EP0315251A1 Fireplace with a heat recovering device |
| 05/10/1989 | CN2037459U Multifunction vacuum furnace |
| 05/09/1989 | US4829538 Furnace hearth |
| 05/05/1989 | WO1989003966A1 Low temperature kiln |
| 05/03/1989 | EP0314404A1 Improvements in or relating to furnaces |
| 05/02/1989 | US4827486 Process for increasing the energy input in electric arc furnaces |
| 04/25/1989 | US4824364 Non-ferrous metal smelting furnace |
| 04/19/1989 | EP0311600A1 Furnace heating |
| 04/11/1989 | US4821284 Scrap-melting process and electric furnace for carrying out the process |
| 04/11/1989 | US4820342 Method of reducing lining wear |
| 04/06/1989 | WO1989003011A1 Vessels for containing molten metal |
| 04/05/1989 | EP0179790B1 Improvements in casting furnaces |
| 04/05/1989 | CN2035453U Ore hearth |
| 04/04/1989 | US4818844 Furnace heating |
| 03/23/1989 | WO1989002477A1 Method of charging ore in melt-reduction |
| 03/21/1989 | US4815096 Cooling system and method for molten material handling vessels |
| 03/15/1989 | CN2034258U Energy-saving and dust-removing forge heating furnace |
| 03/14/1989 | US4813055 Furnace cooling system and method |
| 03/14/1989 | US4812117 Method and device for pre-heating waste metal for furnaces |
| 02/28/1989 | US4807695 Regenerator for a regenerative heating system |
| 02/14/1989 | US4805186 Process for the continuous melting of scrap in an electric direct-current furnace and electric furnace for carrying out the process |
| 01/26/1989 | DE3817855A1 Device for detecting and evaluating process parameters which arise during the remelting of an electrode to give a metal block in a vacuum arc furnace |
| 01/25/1989 | EP0300411A2 Melting retort and method of melting materials |
| 01/17/1989 | US4798532 Flash smelting furnace |
| 01/04/1989 | CN2030305U Closed far-infrared ray energy-saving resistance furnace |
| 01/03/1989 | US4796277 Melting furnace for melting metal |
| 01/03/1989 | US4795139 Apparatus for tapping slag-free steel from a continuous melting furnace |
| 12/20/1988 | US4792123 Metallurgical plant |
| 12/20/1988 | CA1247179A1 Electrical connecting device to be mounted on the wall of a metallurgical vessel in direct contact with a molten metal |
| 12/20/1988 | CA1247178A1 Arc furnace with variable capacity |
| 12/01/1988 | WO1988009388A1 Process for treating liquid metals |
| 11/29/1988 | CA1245462A1 Method and apparatus for batch preparation and feeding into the smelting process |
| 11/23/1988 | EP0291680A1 Arc furnace with a charging area on the side |
| 11/17/1988 | EP0291498A1 Electric furnace, such as an electric arc or plasma furnace |
| 11/17/1988 | EP0291497A1 Electric furnace, such as an electric arc or plasma furnace |
| 11/08/1988 | US4783790 Direct-current arc furnace for steelmaking |
| 11/08/1988 | US4783057 Impregnating web with refractory solution, coating pipe, drying to bond |
| 11/03/1988 | DE3713153A1 Emergency dumping pit for liquid-cooled metal-melting units |
| 11/02/1988 | CN88203864U Solid fuel heat-treatment furnace |
| 11/02/1988 | CN87216980U Coal powder swirl combustion heating stove |
| 11/01/1988 | US4781581 Melting and holding furnace |
| 11/01/1988 | US4781171 Gas fired particulate melting apparatus and method |
| 10/27/1988 | DE3704102C1 Sealing arrangement at the passage opening for an electrode |
| 10/26/1988 | CN87211308U Electrode sealing washer for arc furnace |
| 10/20/1988 | DE3807410A1 Elektronenstrahl-kaltherd-raffinierofen Electron beam cold hearth refining furnace |
| 10/19/1988 | EP0287550A2 Cabin for a metallurgical vessel |
| 10/19/1988 | EP0286934A1 Method of reducing lining wear in a ladle containing a melt |
| 10/18/1988 | US4779287 Tiltable metallurgical furnace vessel |
| 10/18/1988 | US4778518 Slag-melt reactions with improved efficiency |
| 10/04/1988 | CA1242756A1 Signal generating circuit for reactive energy compensation of an arc furnace |
| 09/27/1988 | US4773630 Tank furnace for the metallurgical treatment of non-ferrous metals |
| 09/14/1988 | CN87213367U Preheating furnace with bitumen barrel |
| 08/30/1988 | US4767451 Method of operating an electric arc furnace |
| 08/16/1988 | CA1240517A1 Method and apparatus for feeding an ablation liquefaction process |
| 08/10/1988 | CN87216120U Heated-air type far-infrared continuous drying oven |
| 08/10/1988 | CN87216119U Far-infrared continuous drying oven |
| 08/09/1988 | US4763337 Process for melting particulate material |
| 08/09/1988 | US4761892 Apparatus for measuring the length of electrodes in an electric furnace |
| 07/28/1988 | DE3700895A1 Closure for bottom tapping holes, and closing material suitable for this purpose |
| 07/27/1988 | EP0275859A1 Pressure gas preheater |
| 07/27/1988 | EP0275384A1 Metallurgic vessel, particularly an electric furnace with one or more bottom electrodes |
| 07/13/1988 | EP0273975A1 Induction plasma furnace |
| 07/12/1988 | US4756688 Apparatus and method for the flow control of flue gas to combustion air in a regenerative heating system |
| 07/05/1988 | US4755137 Process and installation for maintaining the lining of a furnace shell |
| 06/22/1988 | EP0271578A1 Method for meltin metal in an induction plasma furnace |
| 06/16/1988 | WO1988004397A1 A method of preheating scrap |
| 06/15/1988 | CN87202357U Microcomputer controlled intermittent energy-saving embossing equipment |
| 06/08/1988 | EP0269735A1 Induction plasma furnace |
| 06/07/1988 | US4750188 Electrode arrangement for electroarc or reducing furnaces |
| 06/01/1988 | EP0269604A2 Process and furnace for smelting fines, in particular metal or metal-oxide dusts |
| 06/01/1988 | EP0269465A1 Process for the continuous melting of scrap in a DC-arc furnace, and DC-arc furnace for performing said process |
| 06/01/1988 | EP0268606A1 Method and device for pre-heating waste metal for furnaces. |
| 05/31/1988 | US4747583 Apparatus for melting metal particles |