| Patents for F27B 3 - Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces (6,383) |
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| 10/20/1982 | EP0062767A1 Electric arc furnace |
| 10/19/1982 | US4354827 Process and device for improving heat exchange in furnaces heated by radiant heaters |
| 10/12/1982 | US4353738 Lead smelting method |
| 10/12/1982 | US4353532 Aluminum melting furnace |
| 10/12/1982 | US4353530 Method and apparatus for automatically punching the tuyeres of a converter |
| 10/06/1982 | EP0061981A1 Carbon foundation for metallurgical furnaces, and method for its manufacture |
| 10/05/1982 | US4352687 Furnace delivery system |
| 10/05/1982 | US4352486 Pressure probe for metallurgical vessels |
| 09/28/1982 | US4352189 Atmosphere control of slag melting furnace |
| 09/21/1982 | US4351055 Water cooled wall element formed of tubes for melting furnaces |
| 09/14/1982 | US4349911 Safety device for electrodes of an electric steel-making furnace |
| 09/14/1982 | US4349909 Process for casting fused refractory oxides having high melting points |
| 09/14/1982 | US4349381 Recovery of heavy metals from spent alumina |
| 09/01/1982 | EP0058774A1 Electric melting furnace arrangement as well as storage containers and charging devices therefor |
| 08/31/1982 | US4347079 Method of operating an open-hearth furnace |
| 08/17/1982 | US4345332 Cover for vessel for a metal melting furnace, in particular an electric arc furnace |
| 07/28/1982 | EP0056773A1 Continuously charged electric-arc furnace for melting scrap |
| 07/21/1982 | EP0056363A1 Plasma melting furnace |
| 07/21/1982 | EP0056225A1 Plasma melting furnace |
| 07/21/1982 | EP0056224A1 Electric furnace, such as an electric-arc furnace or plasma melting furnace |
| 06/29/1982 | US4337373 Furnace for fusing vanadium pentoxide powder |
| 06/22/1982 | US4336411 Molten metal heating, stirring and casting apparatus |
| 06/22/1982 | CA1126317A1 Extraction furnace |
| 06/15/1982 | CA1125504A1 Fused cast blocks based on refractory oxides and having a steel member embedded therein |
| 06/01/1982 | CA1124515A1 Metallurgical furnace |
| 05/19/1982 | EP0051910A1 A vessel for molten metal |
| 05/19/1982 | EP0051607A1 Metallurgical process and furnace |
| 05/18/1982 | USRE30937 Apparatus for gas collection in open electric smelting furnaces |
| 05/18/1982 | CA1123600A1 Slide closure for the tapping channel of a molten metal container |
| 05/05/1982 | EP0050795A1 Method and apparatus for reclaiming metals from metallic scrap material |
| 05/04/1982 | US4328388 Electro furnace feeding and furnace fume utilization and control |
| 05/04/1982 | US4327901 Melt and hold furnace for non-ferrous metals |
| 05/04/1982 | CA1122894A1 Burner for high temperature combustion air |
| 04/21/1982 | EP0049926A1 Tiltable electric-arc furnace |
| 04/20/1982 | US4325538 Smelting furnace for direct obtaining of copper from ore concentrates/and copper ores |
| 04/13/1982 | US4324943 DC Arc furnace hearth construction |
| 04/07/1982 | EP0049228A1 Vessel for molten metal and method of making it |
| 04/06/1982 | US4323718 Arc furnace roof |
| 03/23/1982 | CA1120522A1 Direct current smelting furnace |
| 03/16/1982 | US4319921 Heat recovery and melting system for scrap metals |
| 02/17/1982 | EP0010106B1 Guide troughs for molten products |
| 02/10/1982 | EP0045417A2 Process and apparatus for collection of gases and particulates in a furnace feed system |
| 01/27/1982 | EP0044513A1 Method and apparatus for cooling the walls of a metallurgical furnace, especially an electric-arc furnace |
| 01/27/1982 | EP0044512A1 Method and apparatus for the cooling of vessel parts of a metallurgical furnace, especially an electric-arc furnace |
| 01/26/1982 | CA1116849A1 Guide trough for molten products |
| 01/26/1982 | CA1116848A1 Metal melting furnace |
| 01/19/1982 | US4311519 Melting copper |
| 01/19/1982 | CA1116407A1 Process and apparatus for melting cast iron borings |
| 01/06/1982 | EP0043322A2 Electric arc furnace arrangement |
| 01/06/1982 | EP0042990A1 Vessel for an electric are furnace |
| 01/05/1982 | US4308805 High temperature damper |
| 12/30/1981 | EP0042609A1 Process for lowering the electrodes of an electric arc furnace |
| 12/29/1981 | US4307871 Apparatus for automatically punching the tuyeres of a converter |
| 12/24/1981 | WO1981003696A1 A device for moving solid material fed onto the surface of a melt and for breaking a slag crust formed on the surface of the melt or inside the charge |
| 12/22/1981 | CA1114872A1 Gas tight seal for electrodes in smelting furnaces |
| 12/22/1981 | CA1114603A1 Method and apparatus for feeding an oxidant within a furnace enclosure |
| 12/15/1981 | CA1114434A1 Water cooled panel used in an electric furnace |
| 12/08/1981 | US4304954 Apparatus for casting fused refractory oxides having high melting points |
| 12/08/1981 | US4304396 Cooling box for steel-making arc furnace |
| 12/01/1981 | US4303229 Mechanical punching device for punching the tuyeres of a converter |
| 11/26/1981 | WO1981003342A1 Metallurgical process and furnace |
| 11/25/1981 | EP0040285A1 Metallurgical process and furnace |
| 11/17/1981 | US4301387 Protection of carbon articles |
| 11/17/1981 | US4301320 Cooling of electrical furnaces |
| 10/28/1981 | EP0038577A1 Cooling arrangement for electric furnaces |
| 09/30/1981 | EP0036473A2 Release device for an electrode support in electrical fusion furnaces |
| 09/29/1981 | US4291634 Solid refuse disposal apparatus |
| 09/23/1981 | EP0036049A1 Electric-arc furnace structure and method for heating refractory materials |
| 09/22/1981 | CA1109513A1 Atmospheric control of flux pre-melting furnace |
| 08/20/1981 | WO1981002339A1 Atmosphere controlled electric melting |
| 08/19/1981 | EP0034109A1 Atmosphere controlled electric melting furnace |
| 08/18/1981 | CA1107337A1 Method and apparatus for supporting furnace heating elements |
| 07/28/1981 | CA1105972A1 Electric arc furnace operation |
| 07/21/1981 | US4279407 Metallurgical furnace in particular an electric arc furnace |
| 07/09/1981 | WO1981001862A1 Metallurgical melting and refining apparatus |
| 07/07/1981 | US4277638 Prefabricated unit for a DC arc furnace |
| 07/01/1981 | EP0031315A1 Safety device for the electrodes of an electric furnace of a steel plant |
| 07/01/1981 | EP0031160A1 Metallurgical melting and refining installation |
| 06/24/1981 | EP0030932A1 Process for plasma-melting of metals and alloys |
| 06/16/1981 | US4273576 Continuous shielded arc melting, controlling and adjusting slag le |
| 06/16/1981 | US4273315 Slide closure for the tapping channel of a molten metal container |
| 05/27/1981 | EP0029416A1 Cooling panel for electric arc furnaces |
| 05/26/1981 | US4269399 Metallurgical furnace |
| 05/19/1981 | CA1101476A1 Electric furnace station noise and smoke pollution control system |
| 04/28/1981 | US4264300 Glassmaking tank furnace |
| 04/28/1981 | CA1100029A1 Premix gas burner assembly for copper melting furnace |
| 04/21/1981 | US4263469 Roller cradle of an inherently stable furnace |
| 04/21/1981 | US4263468 Plasma-arc melting furnace |
| 04/21/1981 | CA1099508A1 Apparatus for melting and refining raw copper or blister copper |
| 04/14/1981 | US4261154 Method and an external plating arrangement for sealing off the cold end of a refractory brick |
| 03/25/1981 | EP0025604A1 Cooling element for industrial furnaces |
| 03/19/1981 | WO1981000758A1 Cooling elements for industrial ovens |
| 03/11/1981 | EP0024834A1 Method for making a hearth of an electric furnace by vibratory compaction of particulate material |
| 03/10/1981 | US4255126 Furnace tilting device |
| 03/10/1981 | CA1097274A1 Reciprocating airlock valve |
| 02/24/1981 | CA1096430A1 Continuous charging apparatus |
| 02/17/1981 | US4251678 Electrical melting apparatus with multiple electrode holding arms |
| 01/27/1981 | US4247087 Furnace installation for the pyrometallurgical treatment of fine-grained ore concentrates |
| 01/20/1981 | CA1094138A1 Method and apparatus for melting machining chips |
| 01/13/1981 | US4245133 Roof for covered electric smelting furnaces |