| Patents for F27B 3 - Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces (6,383) |
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| 11/03/1999 | EP0820528B1 Iron smelting process and plant according to the multiple zone smelting process |
| 10/28/1999 | WO1999054511A1 Variably insertable combined lance with displaceable burner and blower lance bodies |
| 10/26/1999 | US5972282 Straight hearth furnace for titanium refining |
| 10/20/1999 | EP0950164A1 Arc furnace protection |
| 10/19/1999 | US5968230 Method and furnace for disposal of steel-making waste, and operating method of the furnace |
| 10/14/1999 | WO1999051784A1 Twin chamber combustion furnace |
| 10/14/1999 | DE19815457A1 Electron beam furnace for melting lumpy materials used for production of high-purity titanium |
| 10/13/1999 | EP0641393B1 Method for controlling the fuel/air ratio of a burner |
| 10/07/1999 | WO1999051065A2 Bottom for a metallurgical vessel with a direct current electric arc device |
| 10/07/1999 | WO1999050466A1 Metal scrap submergence system for scrap charging/melting well of furnace |
| 10/07/1999 | DE19815274A1 Coolant line for the wall or roof cooling elements of an electric arc furnace |
| 10/07/1999 | CA2326181A1 Base of a metallurgical vessel having a direct-current arc device |
| 10/06/1999 | EP0947768A1 Combustion process with separate injection of fuel and oxidant |
| 10/06/1999 | EP0947587A1 Blow lance and process for its cooling |
| 10/06/1999 | EP0946850A1 Melting apparatus and method for melting metal |
| 10/06/1999 | EP0946761A1 Installation and method for producing molten metal |
| 10/06/1999 | CN1045475C Method for controlling arc of DC arc furnace by tilting top electrode |
| 10/05/1999 | US5961689 This invention relates generally to heating and/or melting a charge such as aluminum. |
| 10/05/1999 | US5961688 Process and device for making liquid iron by non-electric and electric smelting |
| 10/05/1999 | CA2030686C Direct-arc electric furnace fed with controlled current and method to feed a direct-arc furnace with controlled current |
| 10/02/1999 | CA2267400A1 Combustion process using separate injections of fuel and of oxidizer |
| 09/30/1999 | WO1999048637A1 Method and device for handling molten metal baths, notably of magnesium and magnesium alloys |
| 09/30/1999 | WO1999030857A9 Melting and pouring of specialty metals |
| 09/30/1999 | DE19813416A1 Verfahren und Vorrichtung zur Handhabung von Schmelzen, insbesondere von Magnesium und Magnesiumlegierungen A method and apparatus for handling melts, especially of magnesium and magnesium alloys |
| 09/29/1999 | EP0944743A1 Batch preheater |
| 09/29/1999 | CN2341102Y Vortex drying furnace |
| 09/29/1999 | CN2341101Y Uncontinuous flame heating furnace |
| 09/28/1999 | US5960027 Apparatus for controlling arc deflection in an arc furnace |
| 09/28/1999 | CA2143403C Process for the simultaneous smelting of dust and incinerator slag |
| 09/23/1999 | WO1999047873A1 Method for determination of the tip position of consumable electrodes used in electric smelting furnaces |
| 09/23/1999 | WO1999047711A1 Wall structure for a metallurgical vessel and blast furnace provided with a wall structure of this nature |
| 09/23/1999 | CA2288701A1 Method for determination of the tip position of consumable electrodes used in electric smelting furnaces |
| 09/22/1999 | EP0914218A4 Apparatus and method for hazardous waste vitrification |
| 09/22/1999 | CN2339951Y Tubelike water-cooling compensator with rotary angle-changing device |
| 09/21/1999 | US5956365 Electric arc furnace having slag door and post combustion process |
| 09/21/1999 | US5954855 Method for electric steelmaking |
| 09/16/1999 | WO1999046412A1 Blasting lance with a gas/liquid mixing chamber and a method for the expansion cooling thereof |
| 09/16/1999 | DE19908196A1 Metallurgical unit for heating/keeping warm or metallurgically treating liquid metal on industrial scale |
| 09/15/1999 | EP0942247A1 Protective atmosphere heating |
| 09/15/1999 | EP0868404B1 Rotary resistance melting furnace |
| 09/15/1999 | EP0799323B1 Tilting metallurgical unit comprising several vessels |
| 09/15/1999 | EP0793732B1 Direct current arc furnace with two or more electrodes |
| 09/14/1999 | CA2178859C Direct-fired stratified atmosphere furnace system |
| 09/09/1999 | DE19855689A1 Alternating current ladle furnace, especially three phase current ladle furnace |
| 09/08/1999 | CN1228154A Smelting installation with electric-arc furnace |
| 09/08/1999 | CN1228127A Furnace charge preheater |
| 09/08/1999 | CN1227910A 保护性气氛加热方法 Protective atmosphere heating method |
| 09/07/1999 | US5948352 Two-chamber furnace for countergravity casting |
| 09/01/1999 | CN2336305Y Three-stage cyclone preheater with decomposing furnace |
| 08/31/1999 | US5946341 Method pertaining to the operation of electric furnaces, and a furnace |
| 08/31/1999 | US5946339 Electric arc furnace for producing liquid steel from a charge |
| 08/31/1999 | CA2078904C Wall electrode for direct current electric metallurgical furnace |
| 08/27/1999 | CA2262234A1 Furnace |
| 08/26/1999 | WO1999042779A1 Seal for steel furnace emissions |
| 08/26/1999 | WO1999042625A1 Device for preheating charging stock, comprising replaceable stack wall sections |
| 08/26/1999 | DE19807616A1 Beschickungseinrichtung für Niederschachtöfen Loading device for low shaft |
| 08/26/1999 | DE19807590A1 Charge preheater for melting furnaces |
| 08/26/1999 | DE19807003A1 Thermal chamber retaining heat in molten metal |
| 08/25/1999 | CN1226961A Metallurgical furnace unit |
| 08/24/1999 | US5943360 Electric arc furnace that uses post combustion |
| 08/19/1999 | WO1999041561A2 Charging device for low blast furnaces |
| 08/19/1999 | WO1999041560A1 Cooled roof for electric arc furnaces and ladle furnaces |
| 08/19/1999 | WO1999041419A1 Forebay for a metallurgical furnace |
| 08/19/1999 | DE19806332A1 Electrode spray cooling arrangement for electro-melting furnace |
| 08/19/1999 | CA2320184A1 Feeding device for low shaft furnaces |
| 08/19/1999 | CA2320121A1 Cooled roof for electric arc furnaces and ladle furnaces |
| 08/18/1999 | EP0871785B1 Method and apparatus for after-burning the combustible components of the atmosphere in metallurgical smelting vessels |
| 08/18/1999 | EP0657710B1 Dc arc furnace |
| 08/18/1999 | CN2333993Y Low-frequency AC and DC single electrode ore-smelting furnace |
| 08/17/1999 | US5940426 Adapter device for composite electrodes with an auxiliary reactance function on electric arc furnaces |
| 08/17/1999 | CA2229793A1 Seal for steel furnace emissions |
| 08/11/1999 | CN2332980Y Safety device for preventing flame from raising for automatic carbon injector |
| 08/11/1999 | CN2332979Y Stibium trioxide smelting furnace |
| 08/10/1999 | US5936996 Furnace plant |
| 08/10/1999 | US5936995 Electric arc furnace with scrap diverting panel and associated methods |
| 08/10/1999 | CA2229277A1 A thermal container for melting metal and the manufacturing method thereof |
| 08/05/1999 | DE19815154C1 Bottom of a metallurgical vessel with a direct current electric arc unit |
| 08/04/1999 | CN1044492C Equipment and method for smelting steel |
| 08/03/1999 | US5933445 Cooling system for cathodes in direct current electric arc furnaces |
| 08/03/1999 | CA2030252C Method of and apparatus for continuously discharging molten metal and slag |
| 07/29/1999 | WO1999037822A1 Method and device to feed premixed gas to tuyeres of electric arc furnaces |
| 07/29/1999 | CA2318150A1 Method and device to feed premixed gas to tuyeres of electric arc furnaces |
| 07/28/1999 | EP0931839A1 Process for manufacturing of steel ingots with high purity |
| 07/28/1999 | CN2330955Y Triple-frequency induction electric arc furnace |
| 07/21/1999 | CN2329923Y Silicon carbide smelting furnace with combustion supporting device |
| 07/20/1999 | US5926498 Melting furnace for the thermal treatment of special waste materials containing heavy metal and/or dioxin |
| 07/20/1999 | US5925165 Process and apparatus for the 3-stage treatment of solid residues from refuse incineration plants |
| 07/20/1999 | US5924858 Staged combustion method |
| 07/14/1999 | EP0874704A4 Improved molten metal charge well |
| 07/14/1999 | CN2328961Y High efficiency energy saving smelting furnace for non-ferrous metal |
| 07/13/1999 | US5923698 Method of operating an arc furnace, and an arc furnace |
| 07/13/1999 | US5922273 Modular hearth arrangement for cold hearth refining |
| 07/07/1999 | CN2327971Y Oil heating furnace for forging process |
| 07/06/1999 | CA2030671C Arc furnace for processing powdery materials |
| 06/29/1999 | US5916512 Method and apparatus for after-burning the combustible components of the atmosphere in metallurgical smelting vessels |
| 06/29/1999 | US5916471 Rotary socket taphole assembly |
| 06/24/1999 | WO1999031021A1 Roof-mounted oxygen-fuel burner for a glass melting furnace and process of using the oxygen-fuel burner |
| 06/24/1999 | WO1999030857A1 Melting and pouring of specialty metals |
| 06/24/1999 | DE19755225A1 Coolant duct for wall or ceiling cooling elements in electric arc furnaces |
| 06/23/1999 | CN2325738Y Bogie type annealing furnace |