| Patents for C21C 5 - Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel (14,381) |
|---|
| 10/03/1990 | CN1009837B Method for controlling secondary top-blown oxygen in subsurface pneumatic steel refining |
| 10/02/1990 | CA1274800A1 Elevated swinging device for placing slag retention devices in tapping converters |
| 09/26/1990 | CN1045642A Smelting plant with shaft-like material preheater |
| 09/26/1990 | CN1009759B Electrical connection device intended to be placed through the wall of a direct-current metallurgical furnace |
| 09/25/1990 | CA1274484A1 Horizontally and vertically movable elevated apparatus for placing slag retaining means in tapping converters |
| 09/25/1990 | CA1274386A1 Device for placing slag retention means in tapping converter |
| 09/20/1990 | WO1990010720A1 Detection of the molten steel-slag interface by spectrophotometry during tapping of the basic oxygen converter |
| 09/20/1990 | DE3908624A1 Apparatus for replacing blowing lances of metallurgical vessels |
| 09/20/1990 | DE3907900A1 Cap for a probe |
| 09/19/1990 | EP0388255A1 Arc furnace and process for smelting scrap |
| 09/18/1990 | US4957551 Method for treatment of dust recovered from off gases in metallurgical processes |
| 09/18/1990 | US4957547 Process for continuously melting of steel |
| 09/18/1990 | US4957546 Refining iron and steel |
| 09/18/1990 | CA1274085A1 Method and device for pre-heating waste metal for furnaces |
| 09/15/1990 | CA2012080A1 Electric arc furnace and scrap iron melting process |
| 09/12/1990 | EP0386586A2 Direct current arc furnace |
| 09/11/1990 | CA1273787A1 Horizontal converter |
| 09/06/1990 | DE3906653A1 Melt-down unit with shaft-type charging-material preheater |
| 09/05/1990 | EP0385434A2 Smelting unit with a shaft for charging and preheating the charge |
| 09/05/1990 | EP0384987A1 Method and apparatus for continuously heating and melting material |
| 09/05/1990 | CN1045132A Method for manufacturing molten metal containing ni and cr |
| 09/03/1990 | WO1990010086A2 Melting aggregate with shaft for preheating charged materials |
| 08/29/1990 | EP0384397A1 Method for manufacturing molten metal containing Ni and Cr |
| 08/29/1990 | EP0384395A2 Method for smelting reduction of Ni ore |
| 08/29/1990 | EP0046811B2 Process for recovering co-rich off-gas in metal smelting |
| 08/29/1990 | CN1044956A Carbon-increasing steel-smelting technology of using graphite coal |
| 08/28/1990 | US4951928 Blowing lance arrangement |
| 08/23/1990 | DE3905025A1 Process for producing high-grade bauxite sinter having grain fractions up to 6 mm and above with simultaneous utilisation of the thermal energy of waste oils, even waste oils which can only be destroyed without hazard by high temperatures - up to 2000@C; wherein if only hazard-free destruction of such waste oil is to be operated, the bauxites are able to be replaced by material having high melting points, for example tungsten, as substitutes |
| 08/22/1990 | EP0382900A1 Method for manufacturing molten pig iron |
| 08/21/1990 | US4950325 Process for heating steel melts and an apparatus for carrying out the process |
| 08/21/1990 | CA1273044A1 Arc heating type extra-furnace refining apparatus |
| 08/16/1990 | EP0382701A1 Device for preventing slag entrainment |
| 08/16/1990 | DE3904474A1 Hot-cooling circuit for a converter stack |
| 08/15/1990 | CN2060445U Alternative steel tapping hole of level rotary revolving furnace |
| 08/14/1990 | US4948364 Lime kilns |
| 08/09/1990 | WO1990008842A1 Process for preventing the formation of flue gases in metallurgical processes and during the transport of molten metal from a metallurgical vessel to casting vessels and device for transporting molten metals from a metallurgical furnace to a casting vessel |
| 08/07/1990 | US4947405 DC arc furnace |
| 08/07/1990 | US4946498 Process for the production of steel from fine ore hot briquetted after fluidized bed reduction |
| 08/07/1990 | US4946141 Metal processing converter |
| 08/06/1990 | CA2009309A1 Method of preventing fume production during metallurgical processes and when transporting molten metal from a metallurgical vessel to casting and apparatus for transporting moltenmetal from a metallurgical furnace to a casting vessel |
| 07/31/1990 | US4944799 Method of producing stainless molten steel by smelting reduction |
| 07/31/1990 | US4944496 Apparatus for injecting gas into high temperature liquids, e.g. molten metals |
| 07/27/1990 | WO1990008843A1 Direct smelting process |
| 07/26/1990 | WO1990008200A1 Metallurgical vessel and arrangement of the same |
| 07/25/1990 | CN1044127A Dephosphorising and vanadium-main taining process of pig iron containing vanadium in electrical arc furnace |
| 07/18/1990 | EP0377636A1 Congeneration process for production of energy and iron materials, including steel |
| 07/18/1990 | EP0377597A1 Process and device for minimizing process gas consumption in metallurgical processes |
| 07/17/1990 | US4941913 Process for heating steel melts as well as device for performing this process |
| 07/17/1990 | US4941646 Air cooled gas injection lance |
| 07/17/1990 | US4941364 Holder for molten metal sampling device |
| 07/12/1990 | WO1990006481A3 Furnace for melting down scrap iron |
| 07/11/1990 | CN1043750A Tapping channel for metallurgical container |
| 07/10/1990 | US4941149 Method of melting and/or refining metals and cooling device for the graphite electrode used for the same |
| 07/10/1990 | US4940486 Direct current, plasma, electron flow, refining, alloying |
| 07/04/1990 | EP0376142A1 Gas-flushing installation |
| 07/04/1990 | EP0375897A1 Tapping channel for metallurgical vessels |
| 06/28/1990 | WO1990007011A1 Improved consumable injection lance |
| 06/27/1990 | EP0375657A1 Melting furnace |
| 06/27/1990 | EP0374642A1 Observation of furnace interiors |
| 06/27/1990 | EP0256138B1 System for scrubbing gas used for preheating of scrap for steelmaking |
| 06/27/1990 | CN1008541B Improvements in nozzles for injecting substances into liquids |
| 06/23/1990 | CA2006416A1 Tap spout for metallurgical vessels |
| 06/22/1990 | CA2006112A1 Injection device |
| 06/21/1990 | DE3842203A1 Melting furnace, in particular arc furnace |
| 06/20/1990 | EP0373378A1 Process for the operation of a melting unit, and melting unit for performing this process |
| 06/20/1990 | CN1008427B Apparatus for skimming of molten steel |
| 06/20/1990 | CA2006035A1 Observation of furnace interiors |
| 06/19/1990 | US4935054 Through a chute to mouth of furnace |
| 06/19/1990 | CA1270503A1 Ladle furnace |
| 06/14/1990 | WO1990006481A2 Furnace for melting down scrap iron |
| 06/14/1990 | WO1990006377A1 Improvements relating to steel-making vessels |
| 06/13/1990 | EP0372269A1 Process for the operation of a melting unit, and melting unit for performing this process |
| 06/13/1990 | EP0372099A1 Compact lance with a safety device against the rotation of tubes |
| 06/13/1990 | EP0372098A1 Lance holder for a compact lance |
| 06/13/1990 | CN1008378B Injection tube for fibred material |
| 06/12/1990 | US4933006 Method for the batch production of steel in an oxygen steel converter with scrap input |
| 06/12/1990 | US4932635 Cold hearth refining apparatus |
| 06/12/1990 | US4932271 Molten metal sampling device |
| 06/07/1990 | DE3840486A1 Ofenanlage zum einschmelzen von schrott Furnace to melt scrap of |
| 06/06/1990 | CN1042735A Method of producing general-purpose steel |
| 06/05/1990 | US4931090 Pneumatic steelmaking vessel and method of producing steel |
| 06/05/1990 | US4931013 High-temperature burner |
| 06/05/1990 | US4930757 Tuyere for metallurgical vessels |
| 06/05/1990 | CA1269829A1 Apparatus for heating charging material |
| 05/31/1990 | WO1990005886A1 A cooling panel |
| 05/31/1990 | WO1990005790A1 Automatic lance-exchanging device |
| 05/30/1990 | EP0227681B1 Manipulator at furnaces and the like |
| 05/30/1990 | CN1042568A Method of steel smelting with unbalance of iron and carbon |
| 05/18/1990 | CA2003155A1 Method of operating a smelting unit and a smelting unit for that method |
| 05/16/1990 | EP0190313B1 Method and apparatus for continuous steelmaking |
| 05/16/1990 | CA2003179A1 Automatic lance-changing device |
| 05/15/1990 | US4925489 Slags; coal-free; reduced oxygen flow |
| 05/09/1990 | EP0367751A1 Process and installation for continuously melting scrap |
| 05/09/1990 | CN1007920B Method and apparatus for flame generation |
| 05/08/1990 | US4923391 Regenerative burner |
| 05/08/1990 | US4923177 Continuous preheat scrap charging system and method |
| 05/02/1990 | EP0365803A1 Device for the projection of a repairing material on a perforated brick |
| 05/02/1990 | EP0365680A1 A method for producing a reduced chromium-ore bearing powder. |
| 05/01/1990 | US4921222 Fiber composite article and method of manufacture |
| 04/25/1990 | EP0364865A1 Method for producing steel from ore fines |