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)
11/1989
11/08/1989EP0340711A2 Process and installation for adding alloying products to a molten metal stream
11/08/1989EP0340226A1 A method of preheating scrap
11/07/1989US4878944 Pollution control
11/07/1989CA1262634A1 Process for the removal of contaminating elements from pig-iron, steel, other metals and metal alloys
11/02/1989EP0340207A1 Blowing lance
11/02/1989EP0339644A1 Method for refining silicon metal and ferrosilicon alloys
11/02/1989EP0339174A1 Lance for injection or blowing-up with a cooling chamber
11/01/1989CN1036797A Method for producing chromium-containing molten iron with low sulphur concentration
10/1989
10/31/1989US4877761 Refractory composition for refractory linings of metallurgical vessels
10/31/1989US4877221 Expandable tap hole plug
10/26/1989DE3812545A1 Gas bubble brick
10/25/1989CN1036522A Brick for gas-blowing wash
10/24/1989US4875663 Closure device with cleaning of a pouring hole
10/24/1989US4875380 Corrugated jacket for molten metal sampler
10/19/1989WO1989009842A1 Process for producing iron-boron-silicon alloy
10/19/1989WO1989009836A1 Refractory-gas permeable bubbling plug
10/18/1989EP0337982A1 Refractory gas permeable bubbling plug
10/11/1989EP0336920A2 Process for charging of pig iron and installation for performing that process
10/11/1989EP0336109A1 Tuyere for refining lances
10/11/1989EP0336050A1 Injection or blow lance
10/03/1989US4871148 Vortex inhibitor for molten metal discharge
10/03/1989CA1262166A1 Hearth bottom, more particularly for dc arc furnaces
09/1989
09/27/1989CN1035850A Compound bottom-blown oxygen nozzle for complex top-and bottom-blown converter
09/26/1989CA1261147A1 Containers for molten metal
09/26/1989CA1260049A1 Tiltable metallurgical furnace vessel
09/26/1989CA1259902A1 Method of operating a gas recovery system and apparatus for employing the method
09/21/1989WO1989008811A1 Radiation construction method for molten metal outflow port, its apparatus and recess radiating impeller used for said apparatus
09/21/1989WO1989008810A1 Method and installation for recovering energy in metallurgical processes
09/21/1989WO1989008724A1 Reduced chromium-ore bearing powder and method for producing the same
09/21/1989WO1989008719A1 Method for detecting slag flow
09/19/1989US4867787 Mill arrangement with temporary storage vessel and a process of operating the same
09/19/1989US4867786 Rotating the polarity of the magnetic poles
09/19/1989CA1259485A1 Arrangement for preheating scrap
09/14/1989DE3806977A1 Process for controlling the flow when blowing a gas in through a bottom bubble brick during the smelting of metals
09/13/1989EP0331751A1 PROCESS FOR DECARBURIZING HIGH-Cr MOLTEN PIG IRON
09/13/1989EP0331707A1 Vessels for containing molten metal
09/12/1989US4866731 Electric furnace arrangement
09/12/1989US4865297 Apparatus for melting and refining metals
09/12/1989US4865296 Ladle slagging stand
09/12/1989CA1259367A1 Electric connection device for wall mounting on a direct current metallurgical furnace
09/08/1989WO1989008230A1 Furnace for making and delivering melts
08/1989
08/31/1989DE3805226A1 Melting crucible with exhausting device
08/30/1989EP0330483A2 Process for producing chromium containing molten iron
08/30/1989EP0330482A2 Method for producing chromium containing molten iron with low sulphur concentration
08/29/1989US4862477 Apparatus and method for melting and homogenizing batch material
08/29/1989US4861262 Method and apparatus for waste disposal
08/23/1989EP0329566A1 Converter for the production of metal
08/23/1989EP0328677A1 PROCESS FOR MELT REDUCTION OF Cr STARTING MATERIAL AND MELT REDUCTION FURNACE
08/23/1989EP0328613A1 Metallurgical controlling method
08/16/1989EP0327862A2 A process of and an apparatus for post combustion
08/16/1989CN1034759A Process for feeding heat energy into molten metal bath
08/15/1989CA1258371A1 Air cooled refractory lance
08/10/1989WO1989007157A1 Improved metallurgical injection lance
08/09/1989CN2042468U Oxygen lance oil cooling system device installine on bottom of combined oxygen-blown converter
08/08/1989US4856021 Electric direct-current scrap-melting furnace
08/08/1989US4854553 Self shielding lance
08/08/1989US4854550 Stopper for retaining slag and process for implementation and manufacture thereof
08/08/1989CA1258179A1 Method of producing a mixed gas and a plant therefor
08/08/1989CA1258178A1 Method of refining molten steel by arc process
08/03/1989DE3802265A1 Withdrawal device for gas bubble bricks, secure against breakthroughs
08/02/1989EP0325750A1 Metallic coolant for a metallurgical bath, method of cooling using the coolant, method of manufacture thereof
08/02/1989EP0325709A2 Gas flushing brick
08/02/1989EP0183631B1 Wall electrode for a metallurgical direct current electrical furnace
08/01/1989US4853941 D.C. arc furnace having electrically conductive hearth and method for making same
08/01/1989US4853032 Process for producing low carbon steel for cold drawing
08/01/1989US4852860 Consumable injection lance
08/01/1989US4852858 Charging material preheater for preheating charging material for a metallurgical smelting unit
08/01/1989US4852857 Protective device for submersible lance in steel making or the like
07/1989
07/27/1989WO1989006706A1 Heat resistant composite and method of making the same
07/19/1989CN1034053A Method of and apparatus for melting metal waste
07/11/1989CA1257091A1 Gas purge brick for metallurgical furnaces and vessels
07/06/1989DE3743380A1 Verfahren zum erschmelzen von stahl in einem sauerstoff-blaskonverter A method of smelted from steel in an oxygen-blast converter
07/05/1989EP0322763A2 Method for cleaning molten metal and apparatus therefor
07/05/1989CN1033650A Plant for making steel, especially mini steel-making plant
07/05/1989CN1004707B Coal-oxygen composite blow technology for oxygen converter
06/1989
06/28/1989EP0322201A2 Corrugated jacket for molten metal sampler
06/28/1989EP0321689A2 Device for a thermometer or for a gas bubbling lance for liquid metals or the like, especially for aluminum
06/28/1989CN1033529A Process for continuously melting scrap as well as apparatus for performing this process
06/21/1989EP0321443A2 Process and installation for continuously melting scrap
06/21/1989EP0320841A2 Device for coupling a metallurgical ladle to the gas supply
06/21/1989EP0320673A1 Metallurgical vessel
06/21/1989EP0320587A1 Process and apparatus for melting scrap metal
06/20/1989US4841542 Electric furnace arrangement
06/20/1989US4840355 Slag controlling device for basic oxygen furnaces
06/06/1989US4836732 Method and apparatus for continuously charging a steelmaking furnace
06/06/1989US4836510 Metallurgical plant
06/06/1989US4836273 Micro mill continuous steel process
05/1989
05/31/1989EP0318352A1 Carbon dioxide lance for metallurgy
05/30/1989CA1254721A1 Method for installing a converter bottom
05/24/1989EP0317187A2 Metallurgical tuyere and method of calibrating same
05/24/1989CN1033076A Material for alloying of metal by adding vanadium
05/18/1989WO1989004377A1 Process for oxidizing treatment of steel
05/10/1989EP0315311A1 Tap hole plugs for metallurgical vessels
05/10/1989CN1032818A Apparatus for automatic change of blowing pipe
05/09/1989US4829538 Furnace hearth
05/09/1989US4828226 Tap hole plugs for metallurgical vessels
05/09/1989US4827689 Automated apparatus for lining the wall of a vessel with bricks
05/03/1989EP0313959A2 Steel-making plant, especially mini-plant
05/03/1989DE3743745C1 Method for constructing a shaft furnace, and shaft furnace
05/03/1989DE3735835A1 Method of reducing the consumption of process gas
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