Patents
Sitemap › C21 - Metallurgy of iron › C21C - Processing of pig-iron, e.g. refining, manufacture of wrought-iron or steel; Treatment in molten state of ferrous alloys › C21C 5 - Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel
Patents for C21C 5 - Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel (14,381)
01/1999
01/21/1999CA2294949A1 Apparatus and method for cooling a basic oxygen furnace trunnion ring
01/20/1999EP0753077B1 Dc-heated metallurgical vessel with base electrode
01/13/1999EP0890809A1 Iron-base scrap preheating apparatus and method
01/13/1999EP0834049B1 Method for melting a batch in an electric arc furnace
01/12/1999US5858302 Apparatus for electric steelmaking
01/12/1999US5858059 Injecting feed streams through conduits into molten bath, creating jets which combine to form fan jet region
01/07/1999WO1999000522A1 Installation and method for producing molten metal
01/07/1999EP0889138A1 Process and installation for for production of high-chromium containing steels and/or alloys in an electric-arc-converter
01/07/1999EP0646183B1 Process and device for blowing oxygen over metal melts
01/07/1999CA2264665A1 Installation and method for producing molten metal
01/06/1999CN1203951A Steel-welding process for mono-oxygen quick treatment of equipment of converter oxygen lance etc.
01/06/1999CN1203827A Process and apparatus for backing-up or supplementing gas supply system
01/06/1999CN1041557C Smelting plant with two melting furnace arranged in juxtaposed relationship
12/1998
12/30/1998EP0887607A1 A metallurgical furnace unit
12/30/1998EP0886775A1 Method and immersion sensor to measure electrochemical activity
12/30/1998EP0886682A1 Method for producing steel from iron sponges in an induction furnace
12/30/1998CN1041438C Base electrode of DC heated metallurgical vessel
12/30/1998CA2242251A1 Method and apparatus for producing high chromium content steels and/or ferroalloys in an electric arc converter
12/29/1998US5853656 Apparatus and method for cooling a basic oxygen furnace trunnion ring
12/29/1998US5853454 Mass flow gravity feed apparatus for charging metal-melting furnaces with dross level compensator and method for charging metal-melting furnaces therewith
12/29/1998US5853453 Method of processing iron-containing mettalurgical residual substances as well as arrangement for carrying out said method
12/24/1998DE19726540A1 Molten stream impingement pot especially for tilting launder
12/23/1998WO1998058091A1 Process and plant for producing iron smelt in an electric arc furnace by using agglomerated, iron-containing steel work residues
12/23/1998WO1998058088A1 Process and metallurgical vessel for feeding a valuable substance into a molten bath
12/23/1998WO1998057903A1 Process for making expanded slag
12/23/1998EP0885973A1 Process for agglomeration of liquid slag from a steelmaking process
12/23/1998CN1041330C Removable converter
12/22/1998US5851263 Process for smelting steel in an electric arc furnace, and electric arc furnace for its implementation
12/22/1998US5851262 Method of refining molten metal
12/22/1998CA2135780C Electric arc melting furnace
12/22/1998CA2135635C Apparatus for preheating and charging scrap materials
12/17/1998DE19748310C1 Controlling formation of foam slag in an electric arc furnace
12/16/1998EP0884545A1 Electric ARC melting furnace
12/16/1998CN1202234A Safety device for vessel jacket
12/16/1998CN1202122A Fireproof moulding plates with gas ducts
12/15/1998US5850413 Device to support and swing the hearth in an electric furnace
12/10/1998DE19745808C1 Apparatus for sucking away a measuring gas from a process gas chamber under vacuum
12/08/1998US5846482 Lance for blowing fluid-state substances inside furnaces, particularly for steel production
12/08/1998CA2115868C Device for lifting and moving the roof of a spray cooled furnace
12/02/1998EP0646757B1 Dc arc furnace
12/02/1998CN1200769A Method and equipment for refining by vacuum or reduced pressure method
12/02/1998CN1200768A Process for decarbonising high-chromium steel melt
12/01/1998US5844933 For metallurgical purposes
12/01/1998US5843368 Apparatus for electric steelmaking
11/1998
11/26/1998WO1998053261A1 A metallurgical furnace unit
11/26/1998WO1998053106A1 Loading system for electric arc furnaces
11/25/1998EP0879548A1 Electrode and cooling element for a metallurgical vessel
11/25/1998CN1040908C Shrouded lance
11/18/1998EP0877823A2 Producing stainless steels in parallel operated vessels
11/17/1998US5837055 Levitation melting method and melting and casting method
11/17/1998US5836485 Sliding gate valve assembly for a vessel containing molten metal
11/11/1998EP0877195A1 Process and apparatus for backing-up or supplementing a gas supply system
11/11/1998CN1198525A Gunjet/burner for metal smelting furnace
11/11/1998CN1040659C Method for controlling oxygen blowing in converter steelmaking
11/10/1998US5835523 Bottom electrode for a metallurgical vessel
11/05/1998WO1998049353A2 Method for melting steel in a converter
11/05/1998DE19755199C1 Gas introduction unit
11/04/1998EP0874915A1 Method for separating titanium and/or vanadium from pig iron
11/04/1998CN1198190A Method for separating titanium and/or vanadium from pig iron
11/03/1998US5830407 Concentric pipe
11/03/1998US5830259 Preventing skull accumulation on a steelmaking lance
10/1998
10/29/1998WO1998048228A1 Method for smelting iron-based alloys in an electric furnace
10/29/1998WO1998048060A1 Electric arc furnace system
10/28/1998EP0874206A1 Induction heating furnace and bottom tapping mechanism thereof
10/28/1998EP0874060A1 Foamy slag process using multi-circuit top-blowing oxygen lance
10/28/1998EP0767843B1 Method and device for directly feeding liquid metal from a ladle into an electric furnace
10/28/1998EP0730667B1 Process and device for introducing gases into metal melts
10/28/1998CN2295979Y Air supplying element of bottom of smelting furnace
10/28/1998CN1197119A Modifying material for converter final slag and its prodn. tech.
10/25/1998CA2224039A1 Foamy slag process using multi-circuit lance
10/22/1998WO1998046956A1 System to load pre-heated scrap by means of baskets for electric arc furnace
10/22/1998CA2284765A1 System to load pre-heated scrap by means of baskets for electric arc furnace
10/21/1998EP0871785A1 Method and apparatus for after-burning the combustible components of the atmosphere in metallurgical smelting vessels
10/21/1998EP0871781A1 Process for producing foundry iron
10/21/1998CN1196757A Method and apparatus to determine and control carbon content of steel in BOF vessel
10/21/1998CN1196473A Method for introducing gas into liquid pond
10/20/1998US5823762 Coherent gas jet
10/20/1998US5823221 Device and method for the automatic coupling of a teeming ladle to one or more gas pipes
10/20/1998CA2110619C Direct current arc furnace and method for its operation
10/17/1998CA2225291A1 Basic oxygen process with iron oxide pellet addition
10/15/1998WO1998045485A1 Method for recycling iron bearing sludges in a steelmaking operation
10/14/1998EP0870849A2 Tool for glass molding operations and method of manufacture thereof
10/14/1998EP0870066A1 Method and facility for reprocessing waste
10/14/1998CN2294264Y Insertion type oxygen-blowing tube
10/14/1998CN1196117A Process for burning fuel
10/14/1998CN1195708A Steel and process for manufacture of steel component formed by cold plastic deformation
10/14/1998CN1195705A Method of producing foamy slag layer in electric arc furnace
10/13/1998US5822357 Process for melting a charge in a furnace
10/13/1998US5822264 Dynamic semiconductor memory device with SOI structure and body refresh circuitry
10/13/1998US5820816 Purging device and method of making same
10/07/1998EP0868537A1 Method for determination and control of the amount of nitrogen dissolved in metalic liquid phases and device for its realization
10/07/1998CN1040129C Method and device for regulating combustion air flow rate of flue gas collection device of metallurgical reactor
10/07/1998CN1040128C Converter protecting method with splash slag
10/06/1998US5817164 Method and apparatus for making feedstock for steel making
10/06/1998CA2120794C Spray cooled hood system for handling hot gases from a metallurgical vessel utilizing pneumatic processing of molten metal
10/01/1998WO1998043032A1 Method to load scrap for electric arc furnace and relative system
10/01/1998WO1998043030A1 Device to protect graphite electrodes in an electric arc furnace
10/01/1998WO1998042880A1 Cooled basket for steel plants
10/01/1998WO1998042879A1 Pressure converter steel making method
10/01/1998DE19713340A1 Unit for gas introduction into melt
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