| Patents for C21C 1 - Refining of pig-iron; Cast iron (3,137) |
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| 08/18/1999 | CN1225948A Device for filtering and treating molten metal |
| 08/04/1999 | EP0933435A1 Process for the removal of carbon, silicon, manganese and sulphur from molten high carbon ferrous metal |
| 07/28/1999 | CN1224063A Catalytic calcium ferrite dephosphorizing agent |
| 07/21/1999 | CN2329668Y Drive for torpedo hot metal mixer car |
| 07/21/1999 | CN2329667Y Tilting steel ring and supporting base for cylinder of torpedo hot metal mixer car |
| 07/14/1999 | EP0861336B1 Method for producing pre-treated molten metal castings |
| 07/08/1999 | WO1999034022A1 Refining method of molten iron and reduction smelting method for producing the molten iron |
| 07/08/1999 | CA2315031A1 Refining method of molten iron and smelting reduction method for producing molten iron |
| 07/01/1999 | DE19755803A1 Deoxidized cast iron melt is inoculated with a mixture of magnesium and silicon |
| 06/30/1999 | EP0926105A1 Graphite-containing monolithic refractory material |
| 06/17/1999 | WO1999029911A1 Cast iron inoculant and method for production of cast iron inoculant |
| 06/16/1999 | EP0922776A1 Process and apparatus for the injection of at least one additive to a molten metal |
| 06/15/1999 | US5912916 Electric furnace with insulated electrodes and process for producing molten metals |
| 05/27/1999 | WO1999025888A1 Iron castings with compacted or spheroidal graphite produced by determining coefficients from cooling curves and adjusting the content of structure modifyng agents in the melt |
| 04/28/1999 | CN2316323Y Container for instantaneously dense flow balling, creeping or inoculation of spheroidal-graphite cast iron |
| 04/08/1999 | WO1999016916A1 Process for the desulfurization of molten iron and desulfurizing agent |
| 04/07/1999 | CN1213408A Composition for inoculating low sulphur grey iron |
| 04/06/1999 | US5891213 Nucleation and growth of graphite crystals |
| 03/31/1999 | CN2312232Y Slag-blocking apparatus for iron smelting furnace |
| 03/16/1999 | US5882374 Process for producing foundry iron with an insulated electrode |
| 02/24/1999 | CN1042239C Method for increasing volume of melted iron mixing trolley for improving pretreatment of melted iron effect |
| 02/23/1999 | US5873924 Adding to molten iron a mixture containing aluminum, alumina, lime, and a material which evolves a reducing gas; efficient deslagging, by-product inhibition |
| 02/09/1999 | US5868817 Efficiently dephosphorizing, decarbonizing, and/or desulfurizing; adjusting the amount of flux to be charged, the amount of bottom-blown gas admitted and the bottom-blowing agitation power |
| 02/03/1999 | EP0621813B1 Suppression of fume in metal pouring |
| 01/27/1999 | CN1041843C Steel manufacturing method using converter |
| 01/20/1999 | EP0891431A1 Desulphurising calcium carbide blend |
| 01/20/1999 | CN2304662Y Cupola with heating water outside of body |
| 01/20/1999 | CN2304661Y Automatic stopper for tapping spout of blast furnace mixer |
| 01/20/1999 | CN1041696C Molten iron mixing trolley |
| 01/13/1999 | CN1041640C Thermal-insulating method for melten iron in hot-metal mixer and apparatus |
| 12/23/1998 | CN2301276Y Ladle for torpedo hot metal mixer car |
| 12/23/1998 | CN1041329C Process control of compacted graphite cast iron production in pouring furnaces |
| 12/16/1998 | CN1041218C Turning and bearing ring for ladle of iron mixing trolley |
| 11/18/1998 | CN1199099A Desulfurizing slag modifier |
| 11/04/1998 | EP0874916A1 Composition for inoculating low sulphur grey iron |
| 11/04/1998 | EP0874915A1 Method for separating titanium and/or vanadium from pig iron |
| 11/04/1998 | CN1198190A Method for separating titanium and/or vanadium from pig iron |
| 10/21/1998 | EP0871784A1 Cast iron indefinite chill roll produced by the addition of niobium |
| 10/21/1998 | EP0871781A1 Process for producing foundry iron |
| 10/15/1998 | WO1998045484A1 Desulfurizing mix and method for desulfurizing molten iron |
| 10/06/1998 | US5817164 Method and apparatus for making feedstock for steel making |
| 09/30/1998 | EP0866880A1 Desulphurating agent for co-injection treatment of pig iron melts |
| 09/09/1998 | EP0769125B1 Process for melting a metal charge in a rotary kiln, and rotary kiln for implementing such process |
| 09/09/1998 | CN2290606Y Stokehold pure alkali continuously desulfurizing and molten slag granulating device of cannon stove |
| 09/08/1998 | US5803152 Microstructurally refined multiphase castings |
| 09/02/1998 | EP0861336A1 Method for producing pre-treated molten metal castings |
| 08/26/1998 | EP0738333B1 Process control of compacted graphite iron production in pouring furnaces |
| 08/20/1998 | WO1998021373A3 Process for reducing fume emissions during molten metal transfer |
| 08/13/1998 | WO1998034745A1 Vessel for metallurgical purposes |
| 08/12/1998 | EP0268632B1 Improvements in or relating to the production of iron |
| 07/29/1998 | CN1039292C Container for treatment of molten metal |
| 07/15/1998 | EP0755736A4 Improvements in metallurgical conversion |
| 07/09/1998 | WO1998029572A1 Electric furnace with insulated electrodes and process for producing molten metals |
| 07/09/1998 | CA2276151A1 Electric furnace with insulated electrodes and process for producing molten metals |
| 07/01/1998 | CN1186525A On-line production control of cast irons by measuring surface tension of base treated iron |
| 07/01/1998 | CN1186521A Production of foundry iron |
| 06/30/1998 | CA2032020C Method for producing ultra clean steel |
| 06/24/1998 | EP0849366A1 Process for desulfuration of pig iron |
| 06/11/1998 | WO1998025133A1 Method for judging the properties of molten cast iron |
| 06/03/1998 | EP0634962B1 A method of manufacturing cast products which are cast in a single-piece structure having an inhomogeneous graphite structure |
| 06/02/1998 | US5758706 Process control of compacted graphite iron production in pouring furnaces |
| 05/28/1998 | DE19706056C1 Metallurgical vessel |
| 05/27/1998 | CN1182799A Pre-dephosporizing method for molten iron |
| 05/22/1998 | WO1998021373A2 Process for reducing fume emissions during molten metal transfer |
| 05/22/1998 | CA2270949A1 Process for reducing fume emissions during molten metal transfer |
| 05/06/1998 | CN1180596A Strip casting apparatus |
| 04/09/1998 | DE19650498A1 Molten steel vacuum ladle treatment process |
| 04/08/1998 | EP0834577A1 Process and installation for treating of iron melts and cast iron or steel manufactured by this process |
| 03/31/1998 | US5733502 Ferroalloy for inoculation of spherulitic graphite irons |
| 03/26/1998 | DE19632403C1 Verfahren und Vorrichtung zur Erzeugung von siliziumreichen Gießereiroheisen Method and apparatus for the production of silicon-rich foundry pig iron |
| 03/25/1998 | CN1177383A Method and equipment for treatment in molten cast iron baths reaction material having a low or high production of gas |
| 03/18/1998 | EP0829320A2 Strip casting apparatus |
| 03/18/1998 | EP0828861A1 On-line production control of cast irons by measuring the surface tension of the base treated iron |
| 03/18/1998 | EP0828859A1 Process for recovering and disposing of residues produced in cupola furnaces |
| 02/18/1998 | CN1173837A Method of mfg. cast products which are cast in a sinle-piece having controlled variations of compacted graphite iron and grey cast iron |
| 02/12/1998 | WO1998005800A1 Method and device for producing silicon-rich foundry iron |
| 02/05/1998 | WO1998004750A1 Method for separating titanium and/or vanadium from pig iron |
| 01/07/1998 | EP0816522A1 Ferroalloy for the inoculation of spheroidal graphite cast iron |
| 01/07/1998 | CN1036935C Polycompound nodulizer for nodularcast iron |
| 11/25/1997 | US5690161 Process for treating molten metal during a casting operation using a filter and filter for implementing the process |
| 11/19/1997 | EP0806996A1 A method of manufacturing cast products which are cast in a single-piece having controlled variations of compacted graphite iron and grey cast iron |
| 11/12/1997 | CN1164576A Double layer granular fire-retardant nodulizer composition and preparation method thereof |
| 11/05/1997 | EP0805216A1 Preconditioning of cast iron smelted in an electric furnace to produce safety part castings |
| 10/22/1997 | EP0701494A4 Microstructurally refined multiphase castings |
| 10/16/1997 | WO1997038142A1 Desulphurising calcium carbide blend |
| 10/16/1997 | WO1997038140A1 Refractory liner and lining method for a vertical shaft metallurgical vessel |
| 10/02/1997 | WO1997036012A1 Process for recovering and disposing of residues produced in cupola furnaces |
| 10/02/1997 | CA2223132A1 Process for recovering and disposing of residues produced in cupola furnaces |
| 09/25/1997 | WO1997035184A1 New method |
| 09/24/1997 | CN1160086A Nodular graphite cast iron grinding ball and casting production method |
| 09/18/1997 | DE19609606A1 Pig iron@ injection desulphurisation process |
| 09/17/1997 | EP0795037A1 Method and equipment for treatment in molten cast iron baths with reaction materials having a low or high production of gas |
| 08/20/1997 | CN1157328A Method for producing and casting pig-iron and high pureness pig-iron by using scrap |
| 07/30/1997 | EP0786532A2 Briquette containing silicious residual matter, useful as additive for metallurgical purposes and process for the manufacture thereof |
| 07/30/1997 | EP0627012B1 Process for desulphurising irons melts with minimal slag production and suitable device therefor |
| 07/24/1997 | WO1997026376A1 Composition for inoculating low sulphur grey iron |
| 07/23/1997 | CN2258170Y Cylindrical mixer end cover fixing, opening and closing mechanism |
| 07/16/1997 | CN1154417A Process for producing the as cast type minor-caliber nodular cast iron pipe using the cupola furnace melted iron |
| 07/01/1997 | US5643529 Thermal insulation cover for molten metal transfer car |
| 06/19/1997 | WO1997021841A1 Desulphurating agent for co-injection treatment of pig iron melts |