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)
06/1998
06/16/1998CA2017121C Process of controlling the slag in a top-blowing steelmaking converter
06/11/1998WO1998025133A1 Method for judging the properties of molten cast iron
06/10/1998EP0846779A1 Continuous scrap preheating
06/10/1998EP0846778A1 Melting of nickel laterite and sulfur-bearing Ni concentrate in making Ni-alloyed iron and stainless steel
06/09/1998US5762682 Heat treatment and sealing with deaeration
06/04/1998CA2221644A1 Recovering ni units for stainless steel by sequentially smelting ni laterite and ni sulfite concentrate in an iron bath
06/03/1998CN2283051Y Automatic coiling apparatus for converter buggy ladle towing cable
06/03/1998CN1183620A Suspension insulator steel cap
06/03/1998CN1183477A Oxygen blowing lance for electric furnace
06/03/1998CN1183476A Process for smelting steel
06/03/1998CN1038566C Centrifugal casting scoria
06/02/1998US5761136 Circuit for generating a column switch enable signal of a memory
06/02/1998US5759482 Water cooled flue gas sampling device
05/1998
05/27/1998CN2282552Y Auxiliary gun testing probe
05/27/1998CN2282551Y Auxiliary gun testing probe
05/27/1998CN1038518C Submerged-arc scum for steel chamber refinery furnace
05/26/1998US5757843 Induction melting system including gas exhaust
05/22/1998WO1998021374A2 Method for treating steel in an electric arc furnace for obtaining a foamed slag
05/20/1998EP0843020A1 Double hearth electric arc furnace for continuous melting
05/20/1998EP0842591A1 Bottom electrode for an arc furnace operated with direct current and process for operating the furnace
05/20/1998EP0842303A1 Oxygen lance head for treating molten masses
05/20/1998EP0842302A1 Slag treatment
05/20/1998EP0723734B1 Bottom electrode for a metallurgical vessel
05/19/1998US5752772 Sensor arrangement for temperature measurement
05/19/1998US5752561 Adding gas forming substance to ingot mold, adding solid filler, adding liquid iron, allowing gas forming substance to release gases and liquid iron to solidify, forming reduced density intermediate product
05/15/1998CA2221093A1 Process and plant for melting and purification of aluminium, copper, brass, lead and bronze alloys
05/14/1998DE19646738A1 Improved method and equipment for tapping steel from a melting furnace into a ladle
05/13/1998EP0840657A1 Gas rinsing device
05/13/1998EP0740695A4 Utilizing discarded carbon
05/13/1998CN1181807A Preheater for arc furnace
05/13/1998CA2220468A1 Method and device for improving tapping of liquid steel from a smelting furnace into a ladle
05/12/1998US5749939 Oxidation of metalloid and carbon dissolved in bath mixture; discharging slag; decarburization
05/06/1998EP0839919A1 Process and installation for treating of flue dusts from electric steelworks
05/06/1998CN1181113A Iron semlting process and plant according to the multiple zone semlting process
05/06/1998CN1181112A Method of producing metals and metal alloys
05/06/1998CN1180751A Process for producing foaming slag above stainless steel melted in electric fumace
05/06/1998CN1038260C Method and apparatus for controlling of operation of double-furnace
05/05/1998US5746970 Nozzle and method of blowing hot metal
05/05/1998US5746804 Oxygen and air in tubes, feeding particles, flanges and nozzles
05/05/1998CA2104337C Continuous scrap preheating
04/1998
04/30/1998WO1998017832A1 METHOD OF DE-CHROMING AND/OR DEPLETING THE MgO CONTENT OF STEEL SLAG
04/30/1998WO1998017830A1 Method for producing steel from iron sponges in an induction furnace
04/29/1998EP0838531A1 Cooling system for cathodes in direct current electric arc furnaces
04/29/1998EP0838292A1 Tapping method for electric arc furnaces, ladle furnaces or tundishes and relative tapping device
04/29/1998CN2280103Y Apparatus for removing cinder under annular stove for heating billet
04/28/1998US5743938 Oxygen gas and-or inert gas is blown to bottom of steel bath
04/22/1998EP0837145A1 Device to support and swing the heart in an electric furnace
04/22/1998EP0649477B1 Electric furnace for melting scrap iron
04/21/1998US5741349 For smelting; layer of slag and protective frozen layer
04/21/1998CA2218412A1 Device to support and swing the hearth in an electric furnace
04/21/1998CA2218408A1 Tapping method for electric arc furnaces, ladle furnaces of tundishes and relative tapping device
04/15/1998EP0835942A1 Method for the electromagnetic stirring of the liquid metal in electric arc furnaces and relative device
04/15/1998EP0617739B1 Method for continuously melting down scrap metal
04/15/1998CN2278916Y Built-up oxygen blast refractory tube
04/15/1998CN1038046C Method and equipment for introducing gases into metal melts
04/14/1998US5738823 Meltdown apparatus
04/14/1998US5738704 Mixture comprising silicon-containing iron-carbon alloy and metal oxide; earlier and uniform carbon oxidation, high decarbonizing at low bath temperature
04/14/1998CA2218016A1 Method for the electromagnetic stirring of the liquid metal in electric arc furnaces and relative device
04/08/1998EP0834582A2 Method of refining metal to high degree of purity and high-frequency vacuum induction melting apparatus
04/08/1998EP0834579A1 Cooling system for electrodes in D.C. electric arc furnaces
04/08/1998EP0834367A1 Float for converter closure
04/08/1998EP0834049A1 Method for melting a batch in an electric arc furnace
04/08/1998EP0833950A1 Method for an improved energy input into a scrap bulk
04/08/1998EP0833949A1 Nozzle with a welded lance head for melt agitation
04/08/1998CN1178560A Method for operating shaft furance
04/01/1998EP0832987A1 Lance for blowing oxygen onto liquid metal
04/01/1998EP0832305A1 Combined oxygen blowing/fuel burner lance assembly
04/01/1998EP0831984A1 Process for recovering iron from iron-rich material
03/1998
03/31/1998US5733358 Process and apparatus for the manufacture of steel from iron carbide
03/27/1998CA2216489A1 Cooling system for electrodes in d.c. electric arc furnaces
03/27/1998CA2216458A1 Cooling system for cathodes in direct current electric arc furnaces
03/26/1998WO1998012359A1 Process for reclaiming incineration waste
03/26/1998CA2237510A1 Process for reclaiming incineration waste
03/25/1998EP0746737B1 Charging device for arc furnaces
03/25/1998CN1176860A Sliding gate vavle for vessel containing molten metal
03/25/1998CN1037858C A. Edlinger (CH)
03/24/1998US5732026 Semiconductor memory device including main/sub-bit line arrangement
03/18/1998EP0829550A1 Method of processing incineration residues in a multi-stage metal bath converter
03/18/1998EP0829545A1 Process for making a foaming slag on a stainless steel melt in an electric furnace
03/18/1998CN1176311A Ferric scale fluxing and dissolving agent and its preparation
03/18/1998CN1037782C Converter for steel-smelting and its method
03/17/1998US5729569 Submerged arc furnace with vertically movable frame
03/17/1998CA2215262A1 Process for working up combustion residues
03/12/1998CA2210505A1 Process for creating a foaming slag over molten stainless steel in an electric furnace
03/11/1998EP0665899B1 Process and device for melting scrap
03/10/1998US5725631 Composite charge for metallurgical processing
03/05/1998WO1998008985A1 Mass flow gravity feed apparatus for charging metal-melting furnaces with dross level compensator and method for charging metal-melting furnaces therewith
03/05/1998WO1998008984A1 Method and facility for reprocessing waste
03/05/1998WO1998008983A1 Device for coupling a blow lance with a header
03/04/1998EP0825909A1 Sliding gate valve
02/1998
02/26/1998WO1998008041A1 Smelting installation with an electric-arc furnace
02/26/1998WO1998007889A1 Batch preheater
02/26/1998WO1998007536A1 Apparatus and method for tapping a molten metal bath
02/26/1998DE19634348A1 Einschmelzaggregat mit einem Lichtbogenofen Smelting plant with an electric arc furnace
02/25/1998CN1037530C Method and apparatus for recovery of valuable metal
02/25/1998CN1037528C Converter process for production of iron
02/18/1998CN1037455C Method of decarburizing molten metal in the refining of steel using neural networks
02/17/1998US5719897 Furnace vessel for a direct current arc furnace
02/17/1998CA2082000C Anode for a direct-current electric arc furnace
02/11/1998CN1037359C Regenerating process for high-temp. alloy furnace pipes
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