| Patents for C21C 5 - Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel (14,381) |
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| 08/18/1987 | US4687512 Desulfurizing mixture for metal melts, process for making it, and process for desulfurizing liquid metal therewith |
| 08/18/1987 | US4687440 Apparatus for heating charging material |
| 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 | EP0232244A2 Flushing arrangement for a metallurgical vessel |
| 08/12/1987 | EP0231880A2 Direct-current arc furnace for steelmaking |
| 08/06/1987 | DE3700892A1 Blowing lance for treating melts |
| 08/06/1987 | DE3603879A1 Process for the preparation of disposable filter dusts |
| 08/05/1987 | EP0230593A1 Automatic installation for lining the inner wall of a vessel |
| 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 | CN87100166A Process for smelting high alloy steels in oxygen-blowing converter |
| 07/22/1987 | EP0229586A2 Process for the production of high-alloyed steels in a basic oxygen furnace |
| 07/21/1987 | CA1224516A1 Electric arc fired cupola for remelting of metal chips |
| 07/15/1987 | EP0228619A1 Converter top-bottom blow smelting process |
| 07/14/1987 | US4679774 Fluid conduit coupling for a metallurgical converter trunnion |
| 07/14/1987 | CA1224048A1 Process of continuously treating an alloy melt |
| 07/14/1987 | CA1224046A1 Process for preparing silicium-based complex ferroalloys |
| 07/08/1987 | EP0228039A2 Method and apparatus for transferring heat to molten metal |
| 07/08/1987 | EP0227952A1 Method of controlling the stirring strength and flow rate of a jet of gas blown through a lance onto a molten metal surface |
| 07/08/1987 | EP0227858A1 Method of operation of exhaust-gas treatment system of sealed type converter under abnormal conditions |
| 07/08/1987 | CN86204263U Protection device for mouth of oxygen-blasting gun at top of open hearth |
| 07/07/1987 | US4679205 Tiltable metallurgical furnace vessel |
| 07/07/1987 | CA1223744A1 Process for decarburizing alloy melts |
| 07/02/1987 | WO1987003914A1 Method of steel production in oxygen converter |
| 07/02/1987 | WO1987003913A1 Method of steel production in oxygen converter |
| 07/02/1987 | WO1987003912A1 Method of steel production in oxygen converter |
| 07/01/1987 | EP0226912A2 Method of making high-quality steel |
| 06/30/1987 | US4676826 Method and apparatus for pneumatic feeding or additives into converters |
| 06/30/1987 | US4676486 Preventing attack of refractory containment by slag |
| 06/24/1987 | EP0226076A1 Automatic gripper for manipulating articles, and robot provided with such a gripper |
| 06/24/1987 | EP0226075A1 Automatic lining installation for the inner wall of a vessel |
| 06/24/1987 | EP0225939A1 Process for melting scrap or the like, and apparatus for performing the same |
| 06/24/1987 | EP0225930A1 Exhaust-gas treatment system of sealed-type converter |
| 06/23/1987 | US4675878 Method and device for the melting and heating of materials |
| 06/23/1987 | US4675049 Process for producing high quality steel |
| 06/23/1987 | US4674728 Sidewall for a metallurgical smelting furnace |
| 06/19/1987 | DE3544119A1 Plasma arc device for melting metal |
| 06/19/1987 | DE3543836A1 Twin blowing lance installation for metallurgical treatments, with integral measuring lance installation |
| 06/17/1987 | CN85108708A Oxygen lance for secandary feeding oxygen to convertor |
| 06/16/1987 | US4674101 Arc-heating type extra-furnace refining apparatus |
| 06/16/1987 | US4673433 Low-alloy steel material, die blocks and other heavy forgings made thereof and a method to manufacture the material |
| 06/16/1987 | US4673167 Method for installing a converter bottom |
| 06/16/1987 | EP0225560A1 Fluidizing composition for basic slag for steel-making furnaces |
| 06/16/1987 | CA1222870A1 Nozzle carrying refractory element, and wear prevention method for said refractory element |
| 06/11/1987 | DE3542829A1 Process and nozzle for producing steel from solid raw materials |
| 06/10/1987 | EP0224860A1 Installation for removing skulls at the mouth of a steel converter |
| 06/10/1987 | EP0224657A1 Gas-flushing installation for melt containers |
| 06/09/1987 | US4670958 Extracting device for a gas-purge brick |
| 06/09/1987 | CA1222626A1 Apparatus for blowing powdery refining agent into refining vessel |
| 06/09/1987 | CA1222625A1 Oxygen lance |
| 06/09/1987 | CA1222624A1 Arrangement to be used with a tiltable metallurgical vessel |
| 06/04/1987 | DE3541850A1 Process for the oxidative treatment of steel |
| 06/03/1987 | EP0223991A1 Process for cooling oxygen injection tuyères in the oxygen treatment of pig iron or steel |
| 06/02/1987 | US4669709 Device for the injection of gases into molten metals and minerals |
| 06/02/1987 | US4669706 Method of operation of exhaust-gas treatment system of sealed-type converter under abnormal conditions |
| 05/27/1987 | EP0223769A1 Ladle stand for treating molten metal |
| 05/27/1987 | EP0223169A1 Device for handling probes, which can be coupled to a probe lance which is adjustable in height, especially measurement and sampling probes |
| 05/27/1987 | CN86107834A Process for cooling oxygen injection nozzles in the oxygen treatment of pig iron or steel |
| 05/19/1987 | US4666402 Method and apparatus for preheating scrap in a bucket |
| 05/19/1987 | US4666134 Stopper means in pouring furnaces |
| 05/14/1987 | DE3628741A1 Lance, in particular blowing lance or measuring lance for molten-metal receptacles |
| 05/12/1987 | US4664703 Combustion of oxygen above bath |
| 05/12/1987 | US4664701 Method and plant for fully continuous production of steel strip from ore |
| 05/06/1987 | EP0220543A1 Installation for lining the walls of a building |
| 05/06/1987 | EP0220522A1 Mixture for desulfurizing metal melts, process for manufacturing it and its use |
| 05/05/1987 | US4662937 Process for production of high-manganese iron alloy by smelting reduction |
| 05/05/1987 | US4662614 Blast pipe |
| 04/29/1987 | EP0219824A1 Method and apparatus for preheating charge materials for continuous steelmarking |
| 04/29/1987 | EP0219649A1 Arrangement of contact electrodes for direct-current arc furnaces or resistance-melting furnaces |
| 04/28/1987 | US4661150 Electric melter for sponge iron |
| 04/28/1987 | US4660809 Tiltable vessel |
| 04/22/1987 | CN86105342A Metallury method of stirring electric arc furnace through blowing inert element from bottom |
| 04/22/1987 | CN85107824A Protecting dregs made of residue of boron as the main component for steel smelt-pouring |
| 04/15/1987 | EP0217983A1 Steel-making process in converter |
| 04/14/1987 | US4657585 Method for separating cobalt, nickel and the like from alloys |
| 04/14/1987 | US4657226 Apparatus for introducing gas to molten metal within a vessel |
| 04/14/1987 | CA1220503A1 Tiltable arc furnace with discharge orifice in extension bay base |
| 04/08/1987 | EP0217710A1 Device to take the temperature and/or a sample from a liquid-iron bath |
| 04/08/1987 | EP0217208A2 Bottom of an electric smelt furnace, in particular of a direct current one |
| 04/07/1987 | US4655826 Agitation, heating arc |
| 04/07/1987 | US4655647 Method and apparatus for the acceleration of solid particles entrained in a carrier gas |
| 04/07/1987 | US4655436 Method and apparatus for recovering and reusing energy from a melting furnace |
| 04/07/1987 | CA1220023A1 Method for operating a metallurgical melting furnace and metallurgical melting furnaces |
| 04/02/1987 | DE3534975A1 Lance for treating crude iron or steel |
| 04/01/1987 | EP0216146A1 Apparatus for sealing the skirt of a converter waste gas recovery system |
| 04/01/1987 | EP0126132B1 Apparatus for introducing substances into liquids e.g. metal melts |
| 03/31/1987 | US4653730 Multi-purpose pyrometallurgical process enhancing device |
| 03/31/1987 | CA1219890A1 Combination electrode for arc furnaces having a protective sheath of graphite-ceramic material |
| 03/25/1987 | EP0215386A1 Scrap melting method |
| 03/25/1987 | CN86203067U Oxygen lance combinded with outer shield gas layer |
| 03/24/1987 | US4653065 Preheating mechanism for use with duplex electric-arc furnace system |
| 03/24/1987 | US4652308 Process for refining molten steel |
| 03/24/1987 | US4652306 Method of refining molten steel by arc process |
| 03/24/1987 | US4651976 Method for operating a converter used for steel refining |
| 03/19/1987 | DE3531825A1 Lance for treating pig iron or steel |
| 03/18/1987 | EP0214902A1 Lance for blow-refinement in converter |
| 03/17/1987 | US4650517 Method of heating molten steel by arc process |
| 03/17/1987 | CA1219130A1 Steelmaking process using calcium carbide as fuel |
| 03/12/1987 | DE3531261A1 Process and converter for the production of steel |