| 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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| 01/17/1985 | WO1985000186A1 Converter for the smelting of steel |
| 01/09/1985 | EP0130960A2 Process for monitoring slag-foaming |
| 01/08/1985 | US4492567 Method of removal of impure gases at the time of scrap preheating, and equipment for use of same |
| 01/08/1985 | US4492365 Porous nozzle for blowing gas through steel |
| 12/27/1984 | EP0128987A2 Tuyere and method for blowing gas into molten metal |
| 12/27/1984 | EP0128965A1 Process for operating a metallurgical melting-furnace, and metallurgical melting-furnace |
| 12/25/1984 | US4490827 Feeding electric current to twin-vessel arc furnaces |
| 12/25/1984 | US4490628 MOS Decoder selection circuit having a barrier transistor whose non-conduction period is unaffected by substrate potential disturbances |
| 12/25/1984 | US4490173 Steelmaking additive composition |
| 12/25/1984 | US4490168 Process of making steel by melting sponge iron in an electric arc furnace |
| 12/19/1984 | EP0128665A2 Heat resistant means |
| 12/19/1984 | EP0128576A1 Closure element for retaining slag during tapping from a converter |
| 12/18/1984 | US4488903 Rapid decarburization steelmaking process |
| 12/18/1984 | CA1179506A1 Metal refining method |
| 12/11/1984 | US4487399 Converter for refining liquid metal |
| 12/11/1984 | US4487397 Method for flame spraying of gunite on lining of metallurgical units |
| 12/11/1984 | CA1179119A1 Lance for repairing refining vessel |
| 12/05/1984 | EP0127504A1 Metallurgical melting process, and direct current arc furnace therefor |
| 12/04/1984 | US4486226 Multistage process for preparing ferroboron |
| 11/28/1984 | EP0126132A1 Apparatus for introducing substances into liquids e.g. metal melts. |
| 11/27/1984 | US4485476 Apparatus and process for preparing high temperature reaction products |
| 11/27/1984 | US4484946 Method of producing iron-, nickle-, or cobalt-base alloy with low contents of oxygen, sulphur, and nitrogen |
| 11/20/1984 | US4483709 Steel production method |
| 11/20/1984 | EP0112393A4 Oxygen-fuel burner with lancing capability and method of producing steel. |
| 11/20/1984 | CA1178052A1 Oxidizing gas blowing lance, namely for the treatment of molten metals by injection of oxygen |
| 11/20/1984 | CA1178051A1 Gas-blast pipe for feeding reaction agents into metallurgical melts |
| 11/14/1984 | EP0125200A1 Furnace vessel for a direct current arc furnace |
| 11/14/1984 | EP0125198A1 Apparatus for accelerating solid particles |
| 11/14/1984 | EP0124890A1 Process and installation for producing steel |
| 11/13/1984 | CA1177643A1 Refractory gas-permeable structural unit |
| 11/13/1984 | CA1177642A1 Oxygen injection lance jet for decarburizing grey iron, and its use for decarburizing chrome alloyed grey iron |
| 11/07/1984 | EP0124490A1 Improved conductive bottom for direct current electric arc furnaces |
| 11/06/1984 | CA1177252A1 Steel conversion method |
| 11/06/1984 | CA1177251A1 Process for refining high-chromium steels |
| 10/30/1984 | US4479637 Apparatus for and method of repairing bottom lining of a converter |
| 10/24/1984 | EP0122910A1 Method of operating a metallurgical plant |
| 10/24/1984 | EP0122768A2 An electric arc fired cupola for remelting of metal chips |
| 10/23/1984 | US4478574 Scrap preheating system for an electric furnace |
| 10/23/1984 | US4478392 Method for preventing the inclusion of slag into the molten steel taped from a converter |
| 10/23/1984 | US4478102 Tilt drive for metallurgical vessels |
| 10/23/1984 | CA1176460A1 Fire proof gas permeable structural unit |
| 10/17/1984 | EP0121617A1 Method and apparatus for measuring wear in the lining of refractory furnaces |
| 10/16/1984 | US4477279 Annular tuyere and method |
| 10/16/1984 | US4477278 Steelmaking process using calcium carbide as fuel |
| 10/16/1984 | CA1176079A1 Sublance for measuring and/or sampling in a metallurgical furnace |
| 10/16/1984 | CA1176076A1 Apparatus for supporting and guiding a sub-lance |
| 10/16/1984 | CA1176059A1 Process for protection of nozzles and refractory lining of a vessel for refining molten metal |
| 10/09/1984 | CA1175651A1 Metallurgical lance |
| 10/02/1984 | US4475205 Apparatus for the electroslag remelting of alloys, especially steel |
| 10/02/1984 | US4474605 Process for refining high-chromium steels |
| 10/02/1984 | US4474361 Oxygen-blown steelmaking furnace |
| 10/02/1984 | CA1175236A1 Method for the air stirring of a metal bath |
| 09/26/1984 | EP0119937A1 Supersonic oxygen-injection lance for the decarburisation of pig iron, in particular chromium-containing pig iron |
| 09/25/1984 | US4473397 Foam prevention compositions and processes for use in steel production |
| 09/25/1984 | US4473350 Oxy-fuel burner |
| 09/18/1984 | US4472195 Process for decarburizing alloy melts |
| 09/18/1984 | US4471950 Expandable, consumable stopper plug for steel making and handling vessels |
| 09/12/1984 | EP0118412A2 Method of carrying out melting, melt-metallurgical and/or reduction-metallurgical processes in a plasma melting furnace as well as an arrangement for carrying out the method |
| 09/12/1984 | EP0117928A1 Process for production of steel by the melt-down of iron-sponge in an electric-arc-furnace |
| 09/11/1984 | US4470804 Scrap material preheating apparatus |
| 09/11/1984 | US4470582 Introduction of substances into molten metal |
| 09/05/1984 | EP0117331A2 Lance pipe |
| 09/04/1984 | US4469511 Removing phosphorus from iron |
| 09/04/1984 | CA1173880A1 Continuously fed scrap metal smelter |
| 08/29/1984 | EP0116764A1 Apparatus for blowing powdery refining agent into refining vessel |
| 08/29/1984 | EP0116756A1 Apparatus for introducing substances into liquids e.g. metal melts |
| 08/29/1984 | EP0116727A2 Control process for a dust extraction plant |
| 08/29/1984 | EP0116720A1 Method of and apparatus for melting scrap |
| 08/28/1984 | US4468782 Method and device for operating a DC arc furnace |
| 08/28/1984 | US4468781 Tiltable arc furnace |
| 08/28/1984 | US4468013 Device for placing slag retention devices in tapping converters |
| 08/28/1984 | US4468009 Refractory protection tube for immersion molten metal devices |
| 08/28/1984 | US4468008 Feeder apparatus for melting furnaces, particularly for plasma melting furnaces |
| 08/28/1984 | US4467666 Torque support |
| 08/28/1984 | CA1173481A1 Shroud for steel making electric-arc furnace |
| 08/22/1984 | EP0116405A1 Steel production using channel induction furnace |
| 08/22/1984 | EP0116206A1 Treatment agents for molten steel |
| 08/21/1984 | CA1172848A1 Gas flow control method and apparatus for metallurgical vessels |
| 08/15/1984 | EP0115941A1 Furnace delining apparatus |
| 08/15/1984 | EP0115757A1 Device for changing measuring and/or sampling probes |
| 08/15/1984 | EP0115756A1 A method and arrangement for producing metals, in particular molten pig iron, steel pre-material or ferroalloys |
| 08/14/1984 | US4466104 Metallurgical plant |
| 08/14/1984 | US4465514 Method of producing steel by the LD process |
| 08/14/1984 | US4465265 Lance for blow type reactor |
| 08/08/1984 | EP0115271A1 Steelmaking process using calcium carbide as fuel |
| 08/07/1984 | CA1172048A1 Method and crucible for refining molten metal through top blowing of oxygen |
| 07/31/1984 | US4462878 Electrolysis of melt surface |
| 07/31/1984 | US4462825 Preventing deterioration of refractory lining |
| 07/31/1984 | US4462824 Corrosion resistant tube for flowing gas into a molten metal bath |
| 07/31/1984 | US4462823 Treatment agents for molten steel |
| 07/31/1984 | US4462575 Hood assembly for a metallurgical converter |
| 07/31/1984 | US4462574 Method for minimizing slag carryover |
| 07/25/1984 | EP0114070A2 Burner or tuyere and its use in a metallurgical furnace and its arrangement in the wall of such a furnace |
| 07/18/1984 | EP0113653A1 Device for changing measuring and/or sampling probes |
| 07/18/1984 | EP0113652A1 Store for measuring and/or sampling probes |
| 07/17/1984 | US4461010 Power supply circuit for a direct current arc furnace |
| 07/10/1984 | US4459137 Gasification of solid carbonaceous materials |
| 07/10/1984 | CA1170460A1 Method of preventing damage of an immersed tuyere of a decarburization furnace in steel making |
| 07/10/1984 | CA1170450A1 Tap-hole apparatus |
| 07/04/1984 | EP0112769A2 Holder for a tuyère made of refractory material, and process for preventing wear during use |