| 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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| 11/17/1988 | EP0290650A1 Method for manufacturing steel through smelting reduction |
| 11/17/1988 | DE3729437A1 Apparatus for guiding torch lances, samplers and the like in and/or out through the orifice of a container |
| 11/08/1988 | US4783790 Direct-current arc furnace for steelmaking |
| 11/08/1988 | US4783060 Immersion lance |
| 11/08/1988 | US4783059 Tuyere for treating molten metal |
| 11/08/1988 | US4783058 Lance for treating molten metal |
| 11/08/1988 | US4783057 Impregnating web with refractory solution, coating pipe, drying to bond |
| 11/08/1988 | CA1244245A1 Process for refining molten steel |
| 11/03/1988 | WO1988008458A1 Molten metal sampling |
| 11/02/1988 | EP0289351A1 Molten metal sampling |
| 11/02/1988 | EP0288566A1 Induction plasma installation |
| 11/01/1988 | US4781887 Production of steels containing low melting point metals |
| 10/25/1988 | US4780137 A process for producing a mixed gas |
| 10/25/1988 | US4780133 Process to improve the refining of liquid metals by natural gas injection |
| 10/25/1988 | US4779847 Metallurgical injection lance |
| 10/25/1988 | US4779846 Method of improving permeability of metallurgical vessels, and material for implementing the same |
| 10/25/1988 | CA1243490A1 Method for refining molten metal bath to control nitrogen |
| 10/20/1988 | WO1988008041A1 Devices and apparatus for injecting gas into high temperature liquids, e.g. molten metals |
| 10/20/1988 | WO1988008040A1 Improvements in sealing injection apparatus for injecting substances into molten metals |
| 10/19/1988 | EP0287550A2 Cabin for a metallurgical vessel |
| 10/18/1988 | US4779287 Tiltable metallurgical furnace vessel |
| 10/18/1988 | CA1243202A1 Arrangement for cleaning a lance head of a lance introducible into a metallurgical vessel |
| 10/12/1988 | EP0286513A1 Process and installation for applying an insulating multilayer refractory coating, and coating so obtained |
| 10/12/1988 | EP0286436A1 Improvements in sealing injection apparatus for injecting substances into molten metals |
| 10/12/1988 | EP0286435A1 Devices and apparatus for injecting gas into high temperature liquids, e.g. molten metals |
| 10/12/1988 | CN87212606U Three-plate sliding slag-blocking sluice valve |
| 10/12/1988 | CN87101926A Improved smelting technology of electric furnace |
| 10/11/1988 | US4776083 Apparatus for mounting a siphon tapping tube onto a converter vessel |
| 10/05/1988 | EP0285458A2 Method of treating dust in metallurgical process waste gases |
| 10/05/1988 | EP0284694A2 Controlling dissolved oxygen content in molten steel |
| 10/04/1988 | US4775134 Arrangement for preheating scrap |
| 09/29/1988 | DE3708730A1 Method for recycling precipitator dusts |
| 09/27/1988 | CA1242325A1 Method of heating molten steel by arc process |
| 09/27/1988 | CA1242320A1 Apparatus for introducing substances into liquids e.g. metal melts |
| 09/22/1988 | WO1988007315A1 Method of melting and refining metals, and an apparatus for cooling electrodes used therefor |
| 09/21/1988 | EP0282824A2 Device for emptying metallurgical vessels |
| 09/20/1988 | US4772318 Process for the production of steel from scrap |
| 09/20/1988 | US4772317 Two major phases, each including converter blowing and discharge steps |
| 09/14/1988 | EP0281599A1 A blast pipe, preferably for use in metallurgical processes |
| 09/07/1988 | EP0281267A1 Devices and apparatus for injecting gas into high temperature liquids, E.G. molten metals |
| 09/07/1988 | EP0192682A4 Method and apparatus for flame generation. |
| 09/06/1988 | US4768756 Converter for preparing steel and a gas supply device for such a converter |
| 08/31/1988 | EP0280349A1 Sub-lance installation for carrying out measurements and/or taking samples in a metallurgical furnace |
| 08/31/1988 | CN87100551A Coal-oxygen composite blow technology for oxygen converter |
| 08/30/1988 | US4767598 Purging gas mixed in chamber; oxygen-free, nonexplosive; alloying |
| 08/30/1988 | US4767451 Method of operating an electric arc furnace |
| 08/30/1988 | US4767103 Convertor pressure control device in a convertor waste gas disposing device |
| 08/30/1988 | US4767036 Apparatus and method for emptying metallurgical vessels containing metal and slag |
| 08/25/1988 | WO1988006191A1 Devices and apparatus for injecting gas into high temperature liquids, e.g. molten metals |
| 08/24/1988 | EP0279123A1 Tap hole structure for a refractory-lined vessel |
| 08/23/1988 | US4765849 Improved hardenability |
| 08/23/1988 | US4765789 Apparatus for lining the inner wall of a vessel with bricks |
| 08/16/1988 | US4764210 In electric melter |
| 08/10/1988 | EP0277232A1 Tuyere for torch guniting of metallurgical plant |
| 08/09/1988 | US4763337 Process for melting particulate material |
| 08/09/1988 | CA1240147A1 Device for introducing gas into molten metal in controlled streams |
| 08/09/1988 | CA1240146A1 Elevated device for placing slag retention means in tapping converters |
| 08/04/1988 | DE3701571A1 Digestion of raw phosphates even in a fusion gasifier, with addition of scrap and steelworks slag |
| 08/03/1988 | CN87100352A Coal-oxygen spray gun for a converter and its protecting technology |
| 07/27/1988 | EP0275349A1 Method for the secondary metallurgical treatment of molten metal, especially molten steel |
| 07/27/1988 | EP0275311A1 Method and multi-nozzle tuyere for guniting of metallurgical plant |
| 07/27/1988 | CN87208452U Preinstalled jet nozzle for heat exchange repeatly blowing bottom gun of converter |
| 07/26/1988 | US4759531 Method for torch guniting of a metallurgical unit |
| 07/26/1988 | CA1239657A1 Carbonaceous unfired magnesia brick bonded with an organic binder |
| 07/26/1988 | CA1239540A1 Method for controlling slag chemistry in a refining vessel |
| 07/26/1988 | CA1239537A1 Device for arresting a steel making converter |
| 07/26/1988 | CA1239536A1 Method and apparatus for preheating scrap in a bucket |
| 07/26/1988 | CA1239534A1 Apparatus for measuring wear in the lining of refractory furnaces |
| 07/21/1988 | DE3700769A1 Process for melting metal scrap, in particular steel scrap, in an electric arc furnace |
| 07/20/1988 | EP0274557A1 Installation for the introduction of powdery agents into a melting ladle |
| 07/19/1988 | US4758269 Method and apparatus for introducing gas into molten metal baths |
| 07/19/1988 | US4758036 Automatic grabbing device for handling articles and robot equipped with such a grabbing device |
| 07/13/1988 | EP0273947A1 Improvements in nozzles for injecting substances into liquids. |
| 07/12/1988 | US4756751 Melting scrap, tapping hot metal from blast furnace, combining molten scrap with hot melt, transporting to steelmaking furnace |
| 07/06/1988 | EP0273576A1 Wire injection nozzle |
| 07/05/1988 | US4755233 Rolling rod at specified finishing-rolling temperature, holding at specified temperature, water cooling |
| 07/05/1988 | US4755137 Process and installation for maintaining the lining of a furnace shell |
| 07/05/1988 | US4754951 Tuyere assembly and positioning method |
| 06/28/1988 | US4754464 Bottom electrodes for arc furnaces |
| 06/28/1988 | US4753677 Cupola furnace with layer of coke |
| 06/23/1988 | DE3729295C1 Wear-resistant cladding of a high-temperature boiler surface, in particular an additive chute on a converter exhaust gas cooling stack |
| 06/22/1988 | EP0272242A2 Agglomerated product, its production and its use |
| 06/22/1988 | EP0271580A1 Method of torch guniting of metallurgical plant |
| 06/21/1988 | US4752330 Method for melting and refining metals |
| 06/16/1988 | WO1988004397A1 A method of preheating scrap |
| 06/16/1988 | DE3641531A1 Lance and line guiding arrangement for media-supplying lances and measuring and sampling lances on metallurgical vessels |
| 06/15/1988 | EP0271474A1 Installation for removing hollow bricks inserted in the tap holes of metallurgical vessels |
| 06/15/1988 | EP0270645A1 Improvements in apparatus for injecting substances into liquids |
| 06/15/1988 | CN86108333A Comprehensive utilization method for final steel slag of open hearch |
| 06/14/1988 | US4750716 Injection lance |
| 06/14/1988 | CA1237899A1 Steel-making process in converter |
| 06/14/1988 | CA1237897A1 Production of alloy steels using chemically prepared v.sub.2o.sub.3 as a vanadium additive |
| 06/08/1988 | EP0270418A1 Float for retaining slags, and method for its use and manufacture |
| 06/08/1988 | CN87108060A Injection tube for fibred material |
| 06/07/1988 | US4749408 Method of bottom blowing operation of a steel making electric furnace |
| 06/07/1988 | US4749171 Observing vessel interior |
| 06/07/1988 | CA1237585A1 Method for producing steel in a top-blown vessel |
| 06/07/1988 | CA1237584A1 Method for producing steel in a top oxygen blown vessel |
| 06/07/1988 | CA1237583A1 System and method for producing steel in a top-blown vessel |
| 06/01/1988 | EP0269604A2 Process and furnace for smelting fines, in particular metal or metal-oxide dusts |