| Patents for C21C 1 - Refining of pig-iron; Cast iron (3,137) |
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| 11/29/1989 | CN1037543A Process of desulfuration of foundry iron |
| 11/22/1989 | CN1037361A Injection or blowing lance comprising cooling chamber |
| 11/15/1989 | EP0342132A1 Process for the desulfurization of pig iron |
| 11/07/1989 | CA1262636A1 Pre-refining treatment of metals and alloys |
| 11/07/1989 | CA1262634A1 Process for the removal of contaminating elements from pig-iron, steel, other metals and metal alloys |
| 11/02/1989 | EP0339174A1 Lance for injection or blowing-up with a cooling chamber |
| 10/26/1989 | DE3812048A1 Process for alloying and/or inoculating and/or deoxidising molten cast iron produced in a cupola |
| 10/17/1989 | US4874576 Method of producing nodular cast iron |
| 10/11/1989 | EP0336121A2 Process for operating a cupola furnace |
| 10/05/1989 | DE3809315A1 Treatment alloy based on ferrosilicon or silicon, process for the preparation thereof and use thereof |
| 09/26/1989 | US4869388 Metal treatment vessel and method |
| 09/26/1989 | CA1261633A1 Fine-grained agent for desulfurizing molten iron |
| 09/20/1989 | CN1035681A Alloy substituting bismuth for inoculated cast iron |
| 09/19/1989 | US4867227 Controlled fluid flow by mounting inoculate body in mold recesses |
| 09/14/1989 | DE3904206A1 Verfahren zum betreiben eines kokslosen, gasgefeuerten kupolofens A method of operating a cokeless, gas-fired cupola |
| 09/06/1989 | CN1035325A Cast-iron used for glass bottle mould |
| 09/05/1989 | US4863803 Composite product with a tubular casing for treating molten metal baths |
| 08/23/1989 | CN1034959A Making process for si-ba alloy |
| 08/16/1989 | EP0328270A2 Metallurgical treatment agents |
| 08/15/1989 | US4857280 Method for the regeneration of sulfided cerium oxide back to a form that is again capable of removing sulfur from fluid materials |
| 08/09/1989 | EP0327237A2 A method of testing the magnesium content of magnesium-treated cast iron |
| 08/09/1989 | CN1034582A Electroslag refining process for molten casting iron of cupola furnace |
| 08/02/1989 | EP0326403A2 Process for melting cold iron material |
| 08/02/1989 | EP0325810A1 Process for making spheroidal graphite cast iron |
| 08/01/1989 | US4853033 Method of desulfurizing molten metal in a plasma fired cupola |
| 07/18/1989 | US4849165 Metal treatment agents |
| 07/18/1989 | CA1257481A1 Graphitic carbons containing interstiticeable elements |
| 07/12/1989 | CN1033844A High strength grey cast iron with casting bainite |
| 06/15/1989 | WO1989005360A1 Method and apparatus for preliminary treatment of hot metal |
| 05/24/1989 | EP0317366A1 Process for producing nodular cast iron |
| 05/23/1989 | US4832739 Process for desulfurizing molten iron |
| 05/18/1989 | WO1989004378A1 Radiant heat vaporizing method and apparatus |
| 05/02/1989 | US4826664 Methods of desulfurizing gases |
| 05/02/1989 | US4825772 Pouring tank and track transfer assembly |
| 04/19/1989 | EP0312068A1 Method of nitriding cast iron |
| 04/05/1989 | EP0309781A1 Process for adding fusibles and evaporable additives to molten iron alloys, and installation for its realization |
| 04/05/1989 | CN1003796B 镁.氧化钙复合物 Magnesium. Calcium oxide composite |
| 04/04/1989 | US4817919 Device for casting, particularly converter for casting and/or post-treating molten metal |
| 03/21/1989 | US4814006 Multistage metallurgy |
| 03/14/1989 | US4811782 Injection of metals as plasma into cast iron and steel melts |
| 03/01/1989 | EP0305053A1 Metal treatment vessel and method |
| 02/28/1989 | US4808219 Electromagnetic raising and falling of melt gives vigorous mixing of added materials; alloying purification |
| 02/28/1989 | CA1250453A1 Process for the production of cast iron with vermicular graphite |
| 02/21/1989 | US4806157 Stabilization eutectic melt, adding rare earth element |
| 02/15/1989 | CN1031116A Creeping graphite cast iron with silencing and shock-absorbing effect and its production |
| 02/15/1989 | CN1003308B Process for desulphurising melten metal |
| 02/08/1989 | EP0302540A1 Method of inoculation of castiron |
| 02/08/1989 | EP0302405A2 Pouring device of molten-metal-containing vessel |
| 02/02/1989 | DE3724200A1 Process for the low-level desulphurisation of base iron for the production of steel and cast iron |
| 02/01/1989 | CN1030792A Recovery of vanadium oxide |
| 01/25/1989 | CN1030613A Inhibitor of globular or nodular graphites in creeping graphite cast iron and its use method |
| 01/17/1989 | CA1248777A1 Method for producing cast-iron, and in particular cast-iron which contains vermicular graphite |
| 11/23/1988 | EP0292205A1 Metallurgical treatment agents |
| 11/23/1988 | EP0192764B1 A method for producing cast-iron, and in particular cast-iron which contains vermicular graphite |
| 11/22/1988 | US4786451 Method of manufacturing a metallurgical addition agent |
| 11/22/1988 | US4786322 Magnesium and calcium composite |
| 11/08/1988 | US4783060 Immersion lance |
| 11/08/1988 | CA1244323A1 Hardenable cast iron |
| 11/08/1988 | CA1244297A1 Process for preparing rotund particles of salt-coated magnesium or magnesium alloy |
| 11/01/1988 | CA1243843A1 Apparatus and method for maintaining the temperature of molten metal |
| 10/25/1988 | US4780133 Process to improve the refining of liquid metals by natural gas injection |
| 10/25/1988 | CA1243646A1 Method for treating carbide-based desulfurizing reagents for injection into molten iron |
| 10/25/1988 | CA1243560A1 Salt coated magnesium granules |
| 09/21/1988 | EP0171438B1 Method for regulating components of molten iron flowing from shaft furnace |
| 09/14/1988 | EP0137791B1 Use of a porous ceramic body for the filtration of metals |
| 09/07/1988 | EP0281485A1 Composite product in a tubular envelope for treating molten-metal baths |
| 09/06/1988 | US4769065 Control of a plasma fired cupola |
| 08/31/1988 | EP0279896A1 Method of manufacturing cast iron sheaves for hoisting devices |
| 08/31/1988 | EP0279894A1 Method of desulfurizing iron |
| 08/23/1988 | US4765830 Injectable reagents for molten metals |
| 08/23/1988 | CA1240842A1 Method, process and composition for desulfurizing pig-iron melts |
| 08/17/1988 | CN88100499A Shell-and-tube composite material suitable for treatment of melten matal bath |
| 08/16/1988 | US4764211 Fine-grained agent for desulfurizing molten iron |
| 08/09/1988 | US4762555 Process for the production of nodular cast iron |
| 07/28/1988 | DE3740521A1 Feuerfeste auskleidung fuer einen konverter Refractory lining for a converter |
| 07/27/1988 | CN88100005A Fireproof lining for a converter |
| 07/20/1988 | EP0274557A1 Installation for the introduction of powdery agents into a melting ladle |
| 07/20/1988 | CN86108736A Binder for press-forming inoculating block |
| 07/12/1988 | US4756880 Radiant heat vaporizing injector |
| 07/12/1988 | CA1239022A1 Process for desulphurising hot metal |
| 07/06/1988 | EP0273576A1 Wire injection nozzle |
| 07/05/1988 | CA1238787A1 Inoculant alloy based on ferrosilicon or silicon and process for its preparation |
| 06/28/1988 | US4753677 Cupola furnace with layer of coke |
| 06/28/1988 | US4753676 Compacted particle containing calcium carbide and a carbonate |
| 06/15/1988 | CN87105780A Spraying reaction agent of liquid metal |
| 06/09/1988 | DE3640472A1 Process for producing crude iron by smelting of calcined pyrite and/or metallurgical dust |
| 06/08/1988 | CN87108060A Injection tube for fibred material |
| 06/07/1988 | US4749549 Gray cast iron inoculant |
| 06/01/1988 | EP0268632A1 Improvements in or relating to the production of iron |
| 05/24/1988 | US4746360 Iron alloys, process and apparatus for introducing highly reactive metals into molten metal and process and product for removing impurities from molten metal |
| 05/17/1988 | US4744822 Dephosphorization, desulfurization and desilation melts |
| 05/03/1988 | US4741771 Process for reduction of impurities content of hot metal |
| 04/27/1988 | EP0265038A1 Method of making steel |
| 04/26/1988 | US4739711 Heat saving cover |
| 04/21/1988 | DE3634106A1 Use of the residue arising in the recovery of pickling acid, and process for producing an additive slag former |
| 04/19/1988 | US4738715 Desulfurizing reagent for hot metal |
| 04/13/1988 | CN87102088A Complex modifying agent for cast iron and the process of manufacture therefrom |
| 04/07/1988 | DE3633925A1 Method and apparatus for the introduction of an additive into a metal melt, in particular an additive which floats and/or gasifies |
| 03/30/1988 | EP0261365A1 Immersion lance |
| 03/15/1988 | CA1233989A1 Method of vaporizing additives in metal melts |