| 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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| 01/11/2000 | CA2131666C Method for producing iron-containing material having less clustering during direct reduction and products thereof |
| 01/05/2000 | EP0857222B1 Process for decarbonising a high-chromium steel melt |
| 01/05/2000 | EP0671595B1 Electric arc fusion furnace with controlled oxygen blast |
| 01/05/2000 | CN1240231A Steelmaking method using waste material as raw material |
| 01/04/2000 | US6010552 Purifying, degassing melt; applying electromagnetics |
| 12/29/1999 | CN1240025A Novel heat analysing system |
| 12/28/1999 | US6007597 Electron-beam melt refining of ferroniobium |
| 12/23/1999 | WO1999066082A1 Method and device for sealing a tap hole in metallurgical containers |
| 12/23/1999 | DE19838330A1 Verfahren und Anlage zur Stahlherstellung Method and apparatus for producing steel |
| 12/23/1999 | DE19826085A1 Verfahren und Vorrichtung zum Abdichten einer Abstichöffnung in metallurgischen Gefäßen Method and device for sealing a tap opening in metallurgic vessels |
| 12/23/1999 | CA2334963A1 Method and device for sealing a tap hole in metallurgical containers |
| 12/22/1999 | EP0965650A1 Furnace vessel and method of producing steel |
| 12/22/1999 | EP0965649A1 Supersonic coherent gas jet for providing gas into a liquid |
| 12/22/1999 | EP0965024A1 Method for the production of refractory linings |
| 12/22/1999 | CN1239516A Steel slag and ferriferous material reprodcessing process useful to produce pig iron and environmentally compatible slags |
| 12/22/1999 | CN1239207A Supersonic coherent gas jet for providing gas into liquid |
| 12/22/1999 | CN1047631C Process and appts. for mfg. of steel from iron carbide |
| 12/21/1999 | US6004504 Method and apparatus for controlling bath level and measurement of bath characteristics |
| 12/21/1999 | US6004369 Steel production method |
| 12/21/1999 | US6003879 Seal for steel furnace emissions |
| 12/16/1999 | WO1999064637A1 Melting method and device using orientable multipurpose lance/burner units |
| 12/16/1999 | DE19848162C1 Metal housing attachment, e.g. for feeding a gas into a molten metal |
| 12/16/1999 | CA2334392A1 Melting method and device using orientable multipurpose lance/burner units |
| 12/15/1999 | EP0964066A1 Process and apparatus for eaf steelmaking using liquid pig iron from a mini blast furnace and less scrap |
| 12/15/1999 | EP0964065A1 Double lance burner/injection device with orientable lance units and melting method using same |
| 12/15/1999 | EP0963449A1 Electric furnace with insulated electrodes and process for producing molten metals |
| 12/15/1999 | EP0963363A1 Use of a wire mesh |
| 12/15/1999 | CN1047336C Method and device for preparation of semi-product in metallurgical conversion |
| 12/08/1999 | EP0961839A1 Method and device for positioning the mouth of a consumable lance |
| 12/08/1999 | EP0784708B1 Process and device for making liquid iron by non-electric and electric smelting |
| 12/08/1999 | CN2352541Y Water cooling type telescopic pipe used for converter |
| 12/07/1999 | US5997596 Oxygen-fuel boost reformer process and apparatus |
| 12/02/1999 | WO1999061857A1 Tiltable light-arc furnace |
| 12/02/1999 | DE19823226A1 Kippbarer Lichtbogenofen Tiltable arc furnace |
| 12/01/1999 | EP0961093A1 Electric arc furnace cooling apparatus |
| 12/01/1999 | CN1046968C Method for direct use of chromite ore in production of stainless steel |
| 11/30/1999 | US5993727 Fume collecting ladle cover |
| 11/30/1999 | US5993510 Process for working up combustion residues |
| 11/30/1999 | US5993508 Briquette as an additive for metallurgic purposes comprising silicon-containing residues, and process for its production |
| 11/25/1999 | WO1999060172A1 Continous metal melting process and apparatus |
| 11/25/1999 | CA2332108A1 Continous melting process and apparatus |
| 11/24/1999 | EP0958481A1 Smelting installation with an electric-arc furnace |
| 11/24/1999 | CN1236398A Installation and method for producing molten metal |
| 11/24/1999 | CN1236088A Electric furnace cooling apparatus |
| 11/24/1999 | CN1046765C Oxygen blowing lance for electric furnace |
| 11/24/1999 | CN1046764C Decarburizing and refining method of Cr-containing molten steel |
| 11/23/1999 | US5989408 Process for measuring an electrochemical activity |
| 11/18/1999 | WO1999058730A1 Method for operating an electric arc furnace to build up and maintain foamed slag |
| 11/18/1999 | WO1999058729A1 Electric arc furnace |
| 11/17/1999 | CN1046554C Iron smelting process and apparatus by multiple zone smelting process |
| 11/11/1999 | DE19820612A1 Operating an electric arc furnace to build up and maintain foam slag |
| 11/11/1999 | DE19820589A1 Electric arc furnace with lances for introduction of solids and/or gases |
| 11/10/1999 | EP0955388A1 Die casting steel and method for manufacture |
| 11/10/1999 | EP0833950B1 Method for an improved energy input into a scrap bulk |
| 11/10/1999 | CN1234449A Quick-melting furnace and process thereof |
| 11/09/1999 | US5980816 Method and apparatus for removing deposit in non-ferrous smelting furnace |
| 11/09/1999 | US5980607 Supplying flow of oxygen separated from air by rectification to molten ferrous metal in steelmaking process |
| 11/04/1999 | WO1999041561A3 Charging device for low blast furnaces |
| 11/03/1999 | EP0820528B1 Iron smelting process and plant according to the multiple zone smelting process |
| 11/03/1999 | CN1046138C Equipment for producing molten pig iron by direct reduction |
| 11/02/1999 | USRE36364 Slide gate valve having a cementless joint between the valve and the metallurgical vessel |
| 10/28/1999 | WO1999054512A1 Method of judging slag forming state in electric furnace steel production and method of operating electric furnace |
| 10/28/1999 | WO1999054511A1 Variably insertable combined lance with displaceable burner and blower lance bodies |
| 10/28/1999 | DE19917625A1 Ferrous metal alloy, e.g. carbon steel, with high strength, high shaping capability and high cold workability |
| 10/26/1999 | US5974077 Preheating entire vacuum vessel, controlling total pressure as well as partial pressure of oxygen, hydrogen, and carbon monoxide in specific ratio; designed with double jacket structure to water cool, so inside of furnace is baked |
| 10/26/1999 | US5972281 Process and device to avoid contamination of tapping steel by flush slag with a tiltable converter |
| 10/26/1999 | US5972129 Smelting titanium-free liquid steel containing nitrogen, adding titanium-containing oxide, chemically reducing with reducing agent and heat treating steel to form high bainite content |
| 10/21/1999 | WO1999053105A1 Method for making stainless steel and steel with high alloy addition content in an electric furnace comprising two separate zones |
| 10/19/1999 | US5968447 Tapping method for electric arc furnaces, ladle furnaces or tundishes and relative tapping device |
| 10/19/1999 | US5968227 System and method for minimizing slag carryover during the tapping of a BOF converter in the production of steel |
| 10/14/1999 | DE19903473A1 Lance carrier incorporating a multifunctional securing head |
| 10/07/1999 | DE19857639C1 Manufacturing joint element from truncated-cone shaped ceramic fireproofing insert |
| 10/06/1999 | EP0947587A1 Blow lance and process for its cooling |
| 10/06/1999 | EP0946761A1 Installation and method for producing molten metal |
| 10/06/1999 | EP0946756A1 Producing iron from solid iron carbide |
| 10/06/1999 | CN1045475C Method for controlling arc of DC arc furnace by tilting top electrode |
| 10/05/1999 | US5961688 Process and device for making liquid iron by non-electric and electric smelting |
| 09/29/1999 | EP0944743A1 Batch preheater |
| 09/28/1999 | US5960027 Apparatus for controlling arc deflection in an arc furnace |
| 09/23/1999 | WO1999047712A1 Device for vacuum refining molten metal, especially molten steel |
| 09/22/1999 | EP0792378B1 Process and device for blowing oxygen-containing gas with and without solid material on a metal melt in a metallurgical vessel, especially an rh vessel |
| 09/21/1999 | US5954855 Method for electric steelmaking |
| 09/16/1999 | WO1999046412A1 Blasting lance with a gas/liquid mixing chamber and a method for the expansion cooling thereof |
| 09/15/1999 | EP0941471A1 Method for judging the properties of molten cast iron |
| 09/15/1999 | EP0799323B1 Tilting metallurgical unit comprising several vessels |
| 09/15/1999 | EP0793732B1 Direct current arc furnace with two or more electrodes |
| 09/15/1999 | CN2338347Y Blowing gun transmission equipment |
| 09/15/1999 | CN1228816A Device for coupling blow lance with header |
| 09/15/1999 | CN1228725A Stopper rod |
| 09/15/1999 | CN1228479A Steel making process by using full pig iron with oxidizing agent in electric arc furnace |
| 09/14/1999 | CA2178859C Direct-fired stratified atmosphere furnace system |
| 09/09/1999 | DE19811722C1 Apparatus for vacuum refining of metal, in particular, steel melts |
| 09/08/1999 | CN2337157Y Packing forging and pressing oxygen lance nozzle |
| 09/08/1999 | CN2337156Y Combined extrusion oxygen lance nozzle |
| 09/08/1999 | CN1228154A Smelting installation with electric-arc furnace |
| 09/08/1999 | CN1228127A Furnace charge preheater |
| 09/07/1999 | US5948138 Method and apparatus for stirring of molten metal using electromagnetic field |
| 09/07/1999 | US5948137 Scrap metal measuring and weighing process and apparatus |
| 09/07/1999 | CA2014999C Gas injector |
| 09/01/1999 | EP0938591A1 Steel slag and ferriferous material reprocessing process useful to produce pig iron and environmentally compatible slags |