| Patents for F27B 3 - Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces (6,383) |
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| 05/31/1988 | US4747443 Casting process |
| 05/18/1988 | EP0267849A1 Pasty sealing material for grouting surfaces submitted to heat |
| 05/18/1988 | EP0267197A1 Melting and holding furnace. |
| 05/11/1988 | EP0266463A1 A regenerator for a regenerative heating system |
| 05/04/1988 | CN87200320U Auto-controller for phosphorus electric stove |
| 05/03/1988 | US4741514 High temperature and/or melting furnace for non-ferrous metals with dosing device |
| 05/03/1988 | CA1235905A1 Method for continuous steelmaking |
| 04/28/1988 | DE3635697A1 Furnace for keeping hot and/or smelting |
| 04/26/1988 | CA1235771A1 Apparatus for determining the presence of a metallic melt in a passage channel of a metallurgical furnace or of a casting ladle |
| 04/26/1988 | CA1235570A1 Apparatus for automatically charging scrap into arc furnace |
| 03/29/1988 | US4734129 Oxidizing lead to form lead oxide slag |
| 03/29/1988 | CA1234492A1 Method and apparatus for controlling an ablation liquefaction process |
| 03/29/1988 | CA1234487A1 Membrane cooling system for metallurgical furnace |
| 03/10/1988 | DE3629661A1 Method for carrying out reductive pyrometallurgical processes with pellets of oxide ores, concentrates or intermediates and also metallic intermediates by means of strongly reducing gases or oxygen-containing gases for the production and refining of a molten metal |
| 03/08/1988 | US4730337 Method and apparatus for operating a direct-current arc furnace |
| 03/08/1988 | US4730336 Oxy-fuel burner system |
| 03/08/1988 | US4729548 Refractory coating for metal |
| 03/02/1988 | EP0258101A1 Process for melting scrap, and electric furnace for performing the process |
| 03/02/1988 | EP0257450A2 Process for the increased input of energy to electric-arc furnaces |
| 03/02/1988 | CN87203742U Self-feeding furnace producting high-titanium slag |
| 02/24/1988 | EP0256138A1 System for scrubbing gas used for preheating of scrap for steelmaking |
| 02/16/1988 | US4726033 Process to improve electric arc furnace steelmaking by bottom gas injection |
| 02/16/1988 | CA1232765A1 Method and apparatus for adding heat to molten metal |
| 02/11/1988 | DE3627126A1 Electrode holder for electric arc furnaces |
| 01/27/1988 | CN87201904U 红外全反射式工业炉 Total reflection infrared industrial furnaces |
| 01/14/1988 | WO1988000426A1 Induction plasma furnace |
| 01/13/1988 | CN87201878U Double bed alternate aluminium-smelting furnace |
| 01/05/1988 | US4717126 Apparatus for holding and refining of molten aluminum |
| 12/30/1987 | CN86104210A Multi-chamber heat exchanging annealing energy-saving furnace |
| 12/29/1987 | US4715584 Furnace for melting metals |
| 12/23/1987 | EP0249647A1 Fireproof tap hole |
| 12/22/1987 | US4715041 Bath electrode for pot furnace |
| 12/16/1987 | EP0249304A2 Apparatus and method for the flow control of flue gas to combustion air ratio in a regenerative heating system |
| 12/15/1987 | US4712774 Device for the melting of light metals |
| 12/09/1987 | EP0248742A1 Process and device for cleaning the tap hole of a steel furnace provided with an extended bottom tap hole |
| 12/09/1987 | CN86209673U Heat-treatment furnace with non-oxidization heating box |
| 12/03/1987 | WO1987007468A1 Induction plasma furnace |
| 12/03/1987 | WO1987007307A1 Method for melting a metal in an induction plasma furnace |
| 12/02/1987 | EP0247923A1 Method and apparatus for continuously charging a steelmaking furnace |
| 11/25/1987 | CN87103410A Console for metallurgical ladle |
| 11/24/1987 | US4708640 Apparatus for batch preparation and feeding into the smelting process |
| 11/17/1987 | US4707583 Plasma heated sintering furnace |
| 11/17/1987 | CA1229297A1 Target wall air jet for controlling combustion air |
| 11/10/1987 | US4705563 Methods and apparatus for reducing corrosion in refractory linings |
| 11/10/1987 | US4705474 Method and apparatus for batch preparation and feeding into the smelting process |
| 11/04/1987 | EP0244392A1 Housing for a metallurgical vessel |
| 11/03/1987 | US4704162 Using linear induction motor |
| 10/27/1987 | US4702461 Charging electro furnaces |
| 10/27/1987 | CA1228478A1 Refractory, heat-insulating articles |
| 10/22/1987 | WO1987006331A1 Method and device for pre-heating waste metal for furnaces |
| 10/20/1987 | US4701931 Electrically conductive bricks |
| 10/15/1987 | DE3612174A1 Method and apparatus for lengthening steel heating electrodes of an aftertreatment plant for molten steel |
| 10/14/1987 | EP0240998A1 Melting furnace and method for melting metal |
| 10/13/1987 | US4699654 Injecting inert gases for selective agitation |
| 09/30/1987 | EP0238884A1 Improved apparatus for holding and refining of molten aluminum |
| 09/29/1987 | US4697274 Electric melting furnace arrangement as well as a method of influencing the composition of a mineral melt for producing wool |
| 09/22/1987 | US4696013 Vessel of a metallurgical furnace, especially of an arc furnace |
| 09/17/1987 | DE3608338A1 Hydraulic actuator for an electrode support arm of an arc furnace |
| 09/17/1987 | DE3607906A1 Furnace vessel of a metallurgical furnace, in particular an arc furnace |
| 09/16/1987 | EP0236550A2 Installation for smoke extraction and sound reduction for metallurgical furnaces, in particular arc furnaces |
| 09/15/1987 | US4694465 Apparatus for automatically charging scrap into an arc furnace |
| 09/09/1987 | EP0235465A1 Electrical connecting device to be arranged in a wall of a metallurgical direct current furnace |
| 09/08/1987 | US4692930 Floor of electrically heated melting furnace, particularly a direct current furnace |
| 09/08/1987 | CA1226609A1 Electrode for electric arc furnaces |
| 09/02/1987 | CN86204506U Straight-ring pole electric calciner for anthracite |
| 08/25/1987 | US4689800 Method of melting raw material with an electric arc furnace |
| 08/13/1987 | WO1987004729A1 System for scrubbing gas used for preheating of scrap for steelmaking |
| 08/13/1987 | DE3603948A1 Arc reduction furnace or arc residue-reduction furnace, in particular for the INRED process |
| 08/12/1987 | EP0231880A2 Direct-current arc furnace for steelmaking |
| 08/12/1987 | CN86206462U Directly baking furnace with heat of circulating and regenerating exausting gas |
| 08/11/1987 | US4685657 Melting furnace |
| 08/04/1987 | US4685112 Electrical connection device intended to be placed through the wall of an electrical direct-current metallurgical furnace |
| 07/29/1987 | EP0230180A1 Process and installation for maintaining the lining of a furnace vessel |
| 07/29/1987 | CN86209328U Rotary smelting furnace |
| 07/28/1987 | CA1224709A1 Port wall air jet for controlling combustion air |
| 07/21/1987 | US4681537 Method and apparatus for continuously charging a steelmaking furnace |
| 07/21/1987 | US4681535 Preheating mechanism for source metal for melt |
| 07/21/1987 | CA1224338A1 Method and system for melting a charge of bulk solid metal |
| 07/16/1987 | DE3600347A1 Device for influencing the distribution of the burden situated in an electric furnace, in particular reduction furnace |
| 07/15/1987 | CN86100024A Circular kiln furnace |
| 07/08/1987 | EP0228024A2 Method of rendering slag-bath reactions more efficient and arrangement for carrying out the method |
| 07/07/1987 | US4679205 Tiltable metallurgical furnace vessel |
| 07/07/1987 | US4678168 Tilting channel arrangement for guiding a molten material |
| 07/07/1987 | CA1223725A1 Multiple hearth furnace chamber |
| 07/01/1987 | CN85109465A Energy-saving annealing technology and an energy-saving annealing furnace |
| 06/30/1987 | US4676107 Pressure sensing probe |
| 06/23/1987 | US4675878 Method and device for the melting and heating of materials |
| 06/19/1987 | DE3544119A1 Plasma arc device for melting metal |
| 06/16/1987 | US4674102 Electric arc furnace |
| 06/16/1987 | US4674101 Arc-heating type extra-furnace refining apparatus |
| 06/16/1987 | EP0225549A2 Electrically conductive brick |
| 06/16/1987 | EP0225548A2 Brick for a bottom electrode, a rear lining or a hearth connection |
| 06/03/1987 | EP0223991A1 Process for cooling oxygen injection tuyères in the oxygen treatment of pig iron or steel |
| 06/02/1987 | US4669707 Apparatus and process for tapping molten metal furnaces using a rotary percussion mill |
| 05/27/1987 | CN86107834A Process for cooling oxygen injection nozzles in the oxygen treatment of pig iron or steel |
| 05/20/1987 | CN85108871A S-shape crossline kiln and its operation |
| 05/19/1987 | US4666403 Air preheating system for continuous fired furnace |
| 05/12/1987 | US4663844 Device for cutting an electrode casing |
| 05/05/1987 | CA1221240A1 Method and apparatus for controlling wall layer thickness in a liquefaction process |
| 04/29/1987 | EP0219824A1 Method and apparatus for preheating charge materials for continuous steelmarking |