| Patents for F27B 3 - Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces (6,383) |
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| 10/13/1993 | CN2143757Y Coal-oxygen jet gun of intensified electric furnace metallurgy |
| 10/07/1993 | DE4211164A1 Verfahren und Vorrichtung zum Behandeln von riesel- oder fließfähigem Material Method and apparatus for treating pourable or flowable material |
| 10/07/1993 | CA2093389A1 Process for maintaining a high temperature reactor with continuous charging |
| 10/06/1993 | EP0564432A2 Process for the production of steel from scrap |
| 10/06/1993 | EP0564056A1 Process and installation for the exhaust gas handling of an arc furnace |
| 10/06/1993 | CN2143314Y Arc furnace with multiple electrodes |
| 09/29/1993 | EP0562701A1 Spray-cooled cover |
| 09/29/1993 | EP0562635A1 Method of melting metals |
| 09/22/1993 | EP0561723A1 Process and installation for post combustion air flow rate regulation of a metallurgical reactor fume collecting device |
| 09/22/1993 | EP0561181A2 Tap pipe for a converter or an electric arc furnace |
| 09/22/1993 | CN1076522A Compound type air supply device for electric arc furnace bottom blowing |
| 09/22/1993 | CN1076495A Melting bath smelting-continuous fusion process and equipment |
| 09/22/1993 | CN1076491A Method and device for regulating the combustion air flow rate of a flue gas collection device of a metallurgical reactor, corresponding collection device and metallurgical reactor |
| 09/21/1993 | US5247538 Melting furnace with manipulator for closing crucibles vacuum-tight |
| 09/07/1993 | US5242155 Melter/holder control system |
| 09/02/1993 | WO1993017131A1 Process for desulphurising irons melts with minimal slag production and suitable device therefor |
| 09/02/1993 | DE4206091A1 Verfahren zur entschwefelung von eisenschmelzen bei minimalem schlacke-anfall und eine dafuer geeignete vorrichtung A process for the desulfurization of iron melts with minimal slag attack and a device suitable |
| 09/02/1993 | DE4205797A1 Elektronenstrahl-ueberlaufschmelzvorrichtung Electron beam melting Overrun device |
| 09/02/1993 | CA2130996A1 A method for desulfurizing iron melts with minimal slag formation and an apparatus for carrying it out |
| 09/01/1993 | CN2141546Y Hot gas industrial heating furnace |
| 08/31/1993 | US5241559 Electric arc furnace roof |
| 08/31/1993 | US5240494 Controlling burners within desired air/fuel ratio to avoid incorporating unwanted oxygen |
| 08/31/1993 | US5240231 Slag control system |
| 08/25/1993 | CN1075542A Anode for a direct-current electric arc furnace |
| 08/24/1993 | US5239554 Direct-arc electric furnace fed with controlled current and method to feed a direct-arc furnace with controlled current |
| 08/24/1993 | US5238484 Plant for the production of molten metals and method |
| 08/19/1993 | WO1993015860A1 Slag control system |
| 08/19/1993 | CA2129738A1 Slag control system |
| 08/17/1993 | US5237585 Direct-current arc furnace having circumferential zones of varying conductivity |
| 08/11/1993 | CN2140042Y Cover type resistance furnace with lifting and moving door |
| 08/10/1993 | CA1321074C Process for continuous melting of scrap metal in a dc electric furnace, and electric furnace for implementing that process |
| 08/04/1993 | CN1074943A Blowing lance suspension with integrated medium supply |
| 08/03/1993 | US5233625 Metallurgical vessel with metallic electrode having readily replaceable wear part |
| 07/28/1993 | EP0552440A2 Blowing lances suspension with integrated material supply |
| 07/28/1993 | EP0552401A1 End block for industrial smelt furnace |
| 07/27/1993 | CA1320645C Process for melting scrap metal and electric furnace for implementing the process |
| 07/21/1993 | CN2138778Y Heating device of electric resistance furnace |
| 07/21/1993 | CN2138777Y New drying device by waste heat of blast furnace |
| 07/20/1993 | CA1320526C Process for increasing the energy input in electric arc furnaces |
| 07/14/1993 | CN2138247Y Oxydren and oil gun on top of Siemans-Martin open-hearth furnace |
| 07/13/1993 | US5227119 Spray-cooled furnace cover |
| 07/08/1993 | WO1993013228A1 Process and device for melting scrap |
| 07/06/1993 | US5225145 Apparatus for opening and closing a taphole of a metallurgical furnace |
| 06/24/1993 | WO1993012261A1 Vacuum processing of particulate reactive metal |
| 06/23/1993 | EP0548042A1 Method of producing metal melts, in particular steel melts |
| 06/23/1993 | EP0548041A2 Electric furnace arrangement for producing steel |
| 06/23/1993 | EP0547447A1 Heath tuyere of electric ARC furnaces |
| 06/23/1993 | EP0378672B1 Cold hearth refining apparatus and method |
| 06/22/1993 | US5221512 Apparatus for preheating and removing organic materials from scrap iron |
| 06/22/1993 | CA1319303C Hearth comprising a device for heat recuperation |
| 06/17/1993 | CA2084220A1 Vacuum processing of particulate reactive metal |
| 06/17/1993 | CA2084138A1 Method of producing metal melts and an electric arc furnace therefor |
| 06/10/1993 | WO1993011398A1 Furnace systems and charger mechanisms for furnaces |
| 06/09/1993 | EP0544967A1 Process for suppression of dust and fumes during electric steel production |
| 06/08/1993 | US5218617 Apparatus for feeding iron-bearing materials to metallurgical furnaces |
| 06/08/1993 | CA2084740A1 Tuyere for installation in hearth of electric arc furnaces |
| 05/27/1993 | DE4138120A1 Einschmelzaggregat mit ofenwiege Smelting furnace with cradle |
| 05/27/1993 | DE4138118A1 Melting-down and refining unit for steel - consists of two adjacent furnaces with lid mechanisms operated simultaneously, for melting down and refining-overheating the melt |
| 05/26/1993 | CN2134632Y Stove for film shrink wrapping |
| 05/26/1993 | CN1072459A Electric furnace arrangement for producing steel |
| 05/26/1993 | CN1072458A Unidirectional top oxygen blown open-hearth furnace |
| 05/26/1993 | CN1020954C Terminal-outlet choke-type heating furnace with short slide |
| 05/26/1993 | CN1020953C Dc electric-arc furnace with arc-controlling megnetic mirror |
| 05/25/1993 | CA1318341C Electric furnace arrangement |
| 05/25/1993 | CA1318340C Electric furnace arrangement |
| 05/20/1993 | WO1993010413A1 Melt-in aggregate with furnace cradle |
| 05/20/1993 | CA2100343A1 Smelting unit with furnace rocking cradle |
| 05/19/1993 | CN2133811Y Flame refraction heating stove |
| 05/12/1993 | EP0541044A2 DC arc furnace |
| 05/12/1993 | EP0540832A1 Anode for a direct-current arc furnace |
| 05/12/1993 | CN2132958Y Combined steel spout |
| 05/06/1993 | DE4235900A1 Arc oven electrode mfr. for series prodn. - using special contact plate and associated operating systems to facilitate changing between carbon and graphite electrodes |
| 05/05/1993 | CN2132138Y Pattern-stoving furnace heated with electricity for ceramics |
| 05/04/1993 | US5207972 Rotating heat exchange cylinder |
| 05/04/1993 | CA1317103C Cooling system and method for molten material handling vessels |
| 04/28/1993 | EP0539352A1 Method of disposing of organic and inorganic substances |
| 04/28/1993 | EP0538278A1 Reclamation of metal from scrap. |
| 04/25/1993 | CA2081257A1 Method of disposing of organic and inorganic substances and a plant for carrying out the method |
| 04/20/1993 | US5204873 DC electric arc melting apparatus |
| 04/20/1993 | CA1316345C Vortex inhibitor for molten metal discharge |
| 04/20/1993 | CA1316344C Low temperature kiln |
| 04/14/1993 | CN2129911Y Spiral tower type mechanic vertical kiln unloading grater |
| 04/07/1993 | EP0536018A1 Wall electrode for metallurgical electric direct current furnace |
| 04/07/1993 | CN2129400Y Electric arc-furnace dusting device |
| 04/01/1993 | DE4132354A1 Melting and holding furnace for metals - with melting zone above holding zone in one compact furnace casing, separated by horizontal dividing wall with vertical opening for metal run-off |
| 03/30/1993 | US5199043 Lining for a direct-current electric arc furnace |
| 03/30/1993 | CA1315098C Furnaces |
| 03/26/1993 | CA2078640A1 Electric arc furnace bottom stir tuyere assembly |
| 03/24/1993 | CN2128721Y Anode on bottom of DC electronic arc steel-smelting furnace |
| 03/24/1993 | CN1070302A Complete dc arc furnace equipment |
| 03/23/1993 | US5195888 Multi-layer fluid curtains for furnace openings |
| 03/18/1993 | WO1993005626A1 D.c. furnace with a hearth electrode, hearth electrode and electrode block, as well as process for operating said furnace |
| 03/18/1993 | DE4130397A1 Gleichstromofen mit einer herdelektrode, herdelektrode und elektrodenblock sowie betriebsverfahren fuer diesen ofen Oven-DC furnace with an electrode herd, herd electrode and electrode block and operating procedures for this |
| 03/10/1993 | EP0530932A2 Metallurgical container for a DC arc installation |
| 03/10/1993 | EP0530534A1 Lining for a direct-current arc furnace |
| 03/04/1993 | WO1993004010A1 Furnace with thermal insulation, and method of manufacture |
| 03/03/1993 | CN2127781Y Smelting regeneratory furnace for waste lead accumulators |
| 03/02/1993 | US5191592 D.c. electric arc furnace with consumable and fixed electrode geometry |
| 02/24/1993 | EP0528153A1 Multi-layer fluid curtains for furnace openings |
| 02/24/1993 | EP0528025A1 A continuous melting furnace for oxide mixtures using direct high frequency induction and having very short refining times and low power consumption. |