Patents
Patents for C21C 5 - Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel (14,381)
04/1995
04/26/1995CN1028299C Method of making mud balls for dedusting steel-smelting converter
04/25/1995US5410566 Method of producing metal melts and an electric arc furnace therefor
04/25/1995US5410564 Direct current electric furnace for melting metal
04/20/1995WO1995010929A1 Bottom electrode for a metallurgical vessel
04/20/1995WO1995010634A1 Process and device for introducing gases into metal melts
04/20/1995WO1995010377A1 Method of adjusting the composition of a molten metal such as steel, and plant for implementation thereof
04/20/1995CA2174109A1 Method of adjusting the composition of a molten metal such as steel, and plant for implementation thereof
04/19/1995EP0649270A1 Metallurgical vessel with a bottom electrode
04/19/1995CN1101676A Technology of convertor discharging steel and double function blind plug of convertor discharging steel
04/18/1995US5407461 Feeding gases to smelt below bath surface, wetting entire lining surface with smelt
04/16/1995CA2118103A1 Metallurgical vessel with bottom electrode
04/13/1995DE4435377A1 Metallurgical vessel
04/13/1995DE4432924A1 Method for melting scrap metal and electric arc furnace for carrying out the method
04/12/1995EP0647213A1 Use of a refractory ceramic compound for lining the floors of electric-arc furnaces and a method of repairing them
04/12/1995CN2194364Y New type burner for spheroidite roaster
04/12/1995CN1101381A Regenerating process for high-temp. alloy furnace pipes
04/12/1995CN1101379A Wet dust-collecting process for fume
04/11/1995US5406579 For a low pressure treating chamber
04/05/1995EP0646758A1 Apparatus for preheating and supplying scraps
04/05/1995EP0646757A1 Dc arc furnace
04/05/1995EP0646652A1 Steel plant containing a closed tiltable arc furnace
04/05/1995EP0646183A1 Process and device for blowing oxygen over metal melts
04/05/1995CN1101078A A method for operating a multimedia tuyere and the tuyere system
04/05/1995CN1028115C Electric furnace arrangement for producing steel
04/04/1995US5402990 Steel making plant
03/1995
03/31/1995WO1995009336A1 Electric arc fusion furnace
03/30/1995WO1995008650A1 Process and installation for repairing the lining of steelmaking converters
03/30/1995CA2133025A1 Process and device for measuring the worn length of a nozzle
03/29/1995EP0645601A1 Measuring procedure and device for the evolution of the ablation length of a tube
03/28/1995US5400930 Slide gate valve having a cementless joint between the valve and a metallurgical vessel
03/28/1995CA2028215C Direct current electric arc furnace
03/22/1995EP0644269A1 Process for controlling the forming of an accretion on an oxy-fuel tuyere
03/22/1995CN1100470A Steelmaking process
03/21/1995US5400358 Continuous scrap preheating
03/16/1995WO1995007365A1 Process for making steel and hydraulically active binders
03/16/1995DE4410289C1 Gas flushing device for installation in the wall of metallurgical melting vessels
03/16/1995CA2148226A1 Process for making steel and hydraulically active binders
03/15/1995EP0643141A1 Method for producing reducible iron-containing material having less clustering during direct reduction and products thereof
03/15/1995CN1100241A Improved power converter device for direct current power supply to an electric arc furnace
03/15/1995CN1100145A Converter for the production of steel
03/08/1995CN1099805A Melting furnace with gas injection
03/07/1995US5395420 Using metal charge with specific carbon and silicon contents and blowing oxygen into slag with added limestone and carbon
03/07/1995US5395095 Combined machine for opening and plugging a taphole in a shaft furnace
02/1995
02/23/1995WO1995005486A1 Composite charge for smelting steel
02/22/1995EP0639750A1 Burner mounting device
02/22/1995EP0639650A1 CO2 snow discharge apparatus
02/21/1995US5392312 Method and device for regulating the combustion air flow rate of a flue rate gas collection device of a metallurgical reactor, corresponding collection device and metallurgical reactor
02/20/1995CA2126116A1 Blended charge for steel production
02/19/1995CA2130281A1 Co2 snow discharge apparatus
02/16/1995WO1995004899A1 Process and device for the thermal destruction of waste
02/14/1995US5390212 Installation for producing molten metal in an electric furnace
02/14/1995US5388733 Slide gate valve having replaceable refractory valve plate assembly and method of replacing the same
02/14/1995CA1334343C Molten metal sampling device
02/09/1995DE4324528A1 Computing device for determining desulphurising additions for a steel melt containing desulphurising additions
02/08/1995EP0637634A1 Process for producing a metal melt
02/08/1995CN1098439A Smelting process of 2OMnSi hot-rolled screw-thread steel by using single slag method of electric arc furnace
02/08/1995CN1027596C Tuyere arrangement for the introtion of agents into a molten bath and method of operating such a tuyere arrangement
02/05/1995CA2129407A1 Process for producing a metal melt
02/01/1995EP0636698A1 Process, installation and container for charging of preheated scrap to a steel melting furnace
02/01/1995CN1027546C Technique for smelting waste metallic scrap into steel
01/1995
01/25/1995EP0635071A1 Process and device for preventing contamination of the tapping steel by flush slag in a tipping converter.
01/25/1995EP0635070A1 Process for recycling dust collected during the production of steel in an electric arc furnace
01/24/1995US5384735 Data output buffer of a semiconductor memory device
01/18/1995CN1097506A Process and installation for the separation of air
01/18/1995CN1027455C Device for automatic coupling of blowing-in lance to manifold
01/17/1995US5382278 Pyrometallurgy, exchange reaction with iron oxide removes chromium to slag phase, recovering nickel and cobalt
01/17/1995US5382003 Flow control device for the suppression of vortices
01/12/1995WO1995001458A1 Steel manufacturing method using converter
01/11/1995EP0633709A1 Operating process of a DC arcfurnace with a bottom electrode and refractory part for its realisation
01/11/1995EP0633323A1 Spray cooled hood system for handling hot gases from a metallurgical vessel utilizing pneumatic processing of molten metal
01/11/1995EP0633322A1 Process for making steel with low phosphorus content
01/11/1995EP0493557B1 D.c arc furnace
01/11/1995CN1097219A Spray cooled hood system for handling hot gases from a metallungical vessel utilizing pneumatic processing of molten metal
01/10/1995US5381441 Direct current arc furnace and method for its operation
01/10/1995US5381440 Bottom electrode for direct current arc furnaces
01/10/1995CA1333846C Carbon dioxide snow handgun for metallurgy
01/05/1995DE4321829A1 Hot-functioning metallurgical vessel
01/04/1995EP0632291A2 Method for measuring wear in the lining of a container provided with a pivoted axle and an opening, and a container
01/04/1995CN1027290C Top-blown oxygen revolving furnace steel making process and the oxygen gun theirof
01/03/1995US5378261 Method for producing steel
01/03/1995US5377960 Oxygen/carbon blowing lance assembly
12/1994
12/28/1994EP0630977A1 Converter for the production of steel
12/28/1994CN1096823A Submerged-arc scum for steel chamber refinery furnace
12/27/1994US5376161 Steel making process including transporting spong iron briquettes
12/27/1994CA1333663C Method of decarburizing high cr molten metal
12/22/1994CA2126148A1 Converter for the production of steel
12/21/1994EP0629830A1 Installation for the production of liquid metal by scrap melting
12/21/1994EP0629710A1 Process and installation for reduction of ores or prereduced metal-bearing products in molten state
12/20/1994US5375139 Electric arc furnace insitu scrap preheating process
12/20/1994US5374297 Lance for fuel and oxygen injection into smelting or refining furnace
12/20/1994US5374296 Lance carriage
12/16/1994CA2125821A1 Process and apparatus for smelting reduction of ores or pre-reduced metal carriers
12/14/1994EP0628086A1 Tilting device for a direct current arc furnace and process for emptying the furnace.
12/14/1994CN1096369A Probennehmer
12/13/1994US5373530 Melting furnace with gas injection
12/08/1994WO1994023864A3 Slide gate valve having replaceable refractory valve plate assembly and method of replacing the same
12/07/1994EP0627870A2 Method for triggering/regulating at least two parallel resonant circuit converters
12/07/1994EP0627493A1 Process and installation for preheating of scrap
12/07/1994EP0627492A1 Smelting furnace with gas injector
12/07/1994CN2184700Y Multi-hole oxygen gun jet for casting