| 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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| 01/21/1981 | EP0022739A1 Process and apparatus for measuring the slag level in a metallurgical vessel and for assessing its physical condition |
| 01/21/1981 | EP0022683A1 Apparatus for orientating a gas flow in a predetermined direction and method of operating such an apparatus |
| 01/21/1981 | EP0022548A1 Process and apparatus for off-gas recovery |
| 01/20/1981 | US4246023 Method and apparatus for the refining of iron-based melts |
| 01/20/1981 | US4245820 Pipe curtain for pollution control hood |
| 01/13/1981 | US4244563 Metallurgical vessel with removable trunnion pins |
| 01/13/1981 | US4244421 Process and an apparatus for cooling of waste gas bends |
| 01/07/1981 | EP0021861A1 Gas-permeable refractory block and method of making this block |
| 01/07/1981 | EP0021482A1 Method and apparatus for preventing the discharge of pollutant gases from the feeding opening of a converter enclosure |
| 01/07/1981 | EP0021316A1 Method and apparatus for determining the contents of heavy metallic oxides in liquid slags |
| 01/07/1981 | EP0020527A1 Cooling of surfaces adjacent molten metal |
| 01/06/1981 | US4243211 Tuyere for use in refining liquid metals |
| 01/06/1981 | US4243208 Converter plant |
| 01/06/1981 | CA1092828A1 Basic oxygen furnace argon refining blow |
| 01/06/1981 | CA1092813A1 Sub-lance assembly for sampling and temperature- measuring of molten metal during refining |
| 01/06/1981 | CA1092810A1 Melting of fine particulate material in a high-speed rotary furnace |
| 12/30/1980 | US4242126 Blowing oxygen or oxygen containing gas with calcium carbide |
| 12/30/1980 | US4241902 System for vessel exchange |
| 12/30/1980 | CA1092362A1 Process in the manufacture of steels containing nickel |
| 12/30/1980 | CA1092361A1 Method for controlling exhaust gases in oxygen blown converter |
| 12/23/1980 | CA1091933A1 Method for the continuous smelting of high-purity steel |
| 12/16/1980 | US4239537 And ferro dolime, roasting alkaline earth compound and iron compound |
| 12/16/1980 | US4239194 Tuyere for the bottom of a steelworks converter |
| 12/16/1980 | US4239193 Converter bottom fastening arrangement |
| 12/16/1980 | US4239190 Structure for collecting exhaust gases from a converter |
| 12/16/1980 | US4239189 Handling apparatus for probe tubes to be attached to temperature gage and/or sampling lances in the _metallurgical field |
| 12/16/1980 | CA1091442A1 Method for producing ferro-alloys |
| 12/11/1980 | WO1980002739A1 Tuyere for torch gunite |
| 12/10/1980 | EP0019686A1 Apparatus for lining metallurgical vessels, especially of steelworks converters and/or blast furnaces |
| 12/09/1980 | US4238634 Gas tight seal for electrodes in smelting furnaces |
| 12/09/1980 | US4238632 Arc furnace for making steel from directly reduced iron |
| 12/09/1980 | US4238121 Hearth structure of an oxygen-bottom-blowing converter |
| 12/02/1980 | US4236913 Argon, carbon dioxide, nitrogen |
| 11/25/1980 | US4235423 Indication of levels in receptacles |
| 11/25/1980 | US4235173 Furnace cooling apparatus |
| 11/18/1980 | US4234170 Movable charging emissions control hood for BOF |
| 11/18/1980 | CA1089900A2 Matte smelting |
| 11/18/1980 | CA1089650A1 Process and device for the manufacture of quality steels |
| 11/12/1980 | EP0018935A1 Process for refining a metal bath containing solid cooling substances |
| 11/11/1980 | US4232855 Tap-hole closing arrangement |
| 11/04/1980 | CA1088758A1 Plant for and method of electroslag remelting of metals and alloys |
| 11/04/1980 | CA1088754A1 Method for production of refined steel |
| 10/30/1980 | WO1980002320A1 Method of torch gunite of linings of metallurgical installations |
| 10/29/1980 | EP0017963A1 Converter steelmaking process |
| 10/29/1980 | EP0017780A1 Apparatus for removing a skull adhering to a metallurgical lance |
| 10/28/1980 | US4230274 Lance for removing skulls from steelmaking vessels |
| 10/21/1980 | CA1087859A1 Process for making alloy steel in arc furnaces, with continuous loading |
| 10/21/1980 | CA1087837A1 Plant for refining molten pig iron |
| 10/14/1980 | US4228314 DC Arc furnace hearth |
| 10/14/1980 | US4227802 Apparatus for measuring the distance to a point on the inner wall of a hot furnace |
| 10/14/1980 | CA1087393A1 Metallurgical vessel suspension method and apparatus |
| 10/07/1980 | US4226407 Metallurgical lance deskuller |
| 10/02/1980 | WO1980002021A1 Composition for torch gunite of converter linings |
| 09/30/1980 | US4225745 Method for charging small particles of iron or steel directly into molten metal in an arc furnace |
| 09/30/1980 | US4225348 Lime bearing agent for use in refining of ferrous melt |
| 09/30/1980 | US4225341 Refining iron in a converter |
| 09/30/1980 | US4225083 Apparatus for applying refractory material onto the inner surface of a furnace |
| 09/30/1980 | US4224836 Tilting drive arrangement for a converter |
| 09/18/1980 | WO1980001923A1 Refractory lining for a metal pipe |
| 09/17/1980 | EP0015408A1 Metallurgical crucible, particularly a tiltable and/or rotatable steel works converter |
| 09/17/1980 | EP0015396A1 A method for increasing vessel lining life for basic oxygen furnaces |
| 09/16/1980 | US4222768 Adding silicon carbide bdfore completion of oxidation step |
| 09/16/1980 | US4222522 Apparatus for applying refractory material onto the inner surface of a furnace |
| 09/16/1980 | US4222506 Molten steel outflow automatically controlling device |
| 08/26/1980 | CA1084273A1 Process for the direct production of steel |
| 08/20/1980 | EP0014274A1 Process for producing steel |
| 08/19/1980 | US4218241 Method of recovering energy from converter exhaust gases |
| 08/19/1980 | US4218049 Metallurgical vessel |
| 08/19/1980 | CA1083824A1 Slag fluidizing agent and method of using same for iron and steel-making processes |
| 08/19/1980 | CA1083812A1 Enclosure for steel converting apparatus |
| 08/05/1980 | US4215854 Melt processing apparatus with tiltable melt receptacle |
| 08/05/1980 | US4215852 Apparatus for locking a converter tilting gear during a blasting operation |
| 07/29/1980 | US4214898 Process for preventing the rephosphorization of electric steel |
| 07/29/1980 | US4214736 Arc heater melting system |
| 07/29/1980 | US4214735 Pressure measurement in a hood above a converter for manufacturing steel |
| 07/29/1980 | CA1082465A1 Method for operation of a converter |
| 07/29/1980 | CA1082455A1 Protection of pure oxygen supply nozzles for steel plant converter |
| 07/23/1980 | EP0013351A1 Method and apparatus for determining the weight of molten metal in situ |
| 07/22/1980 | CA1082232A1 Pitch bonded refractory |
| 07/22/1980 | CA1081968A1 Method for melting steel |
| 07/22/1980 | CA1081945A1 Oxygen lance and sensing adapter arrangement |
| 07/15/1980 | US4212453 Plant for refining pig iron |
| 07/08/1980 | US4211316 Chute for charging steel making vessels |
| 07/08/1980 | CA1080966A1 Bumper guard for metallurgical apparatus |
| 07/08/1980 | CA1080965A1 Gas cleaning system for metallurgical apparatus |
| 07/01/1980 | US4210442 Argon in the basic oxygen process to control slopping |
| 07/01/1980 | US4210023 Method and apparatus for measuring slag foaming using microwave lever meter |
| 06/25/1980 | EP0012537A1 A water-cooled lance and the use thereof in the top blowing of metal melts |
| 06/25/1980 | EP0012363A1 Method of and means for reducing ores |
| 06/24/1980 | US4209321 Method for melting machine chips |
| 06/17/1980 | CA1079753A1 Process for repairing basic refractory linings |
| 06/11/1980 | EP0012131A1 Tiltable converter |
| 06/11/1980 | EP0011779A1 Process for increasing the life of basic converter linings in the course of the refining of pig iron to steel |
| 06/10/1980 | US4207094 Method for preheating the oxygen in an oxygen steel making process |
| 06/10/1980 | CA1079072A1 Arc steelmaking |
| 05/28/1980 | EP0011610A1 Tiltable converter |
| 05/27/1980 | US4204431 Device for temperature measurement and sampling of a steel |
| 05/27/1980 | CA1078212A1 Load-measuring bearing |
| 05/20/1980 | US4204082 DC Arc furnace having starting electrode |
| 05/20/1980 | US4203760 Method for producing steel from sponge metal by using a gas plasma |