| Patents for C21C 1 - Refining of pig-iron; Cast iron (3,137) |
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| 05/14/1991 | US5015291 Injection magnesium nitride for desulfurization of melts |
| 05/07/1991 | CA1283779C Arrangement for use in the thermal analysis and modification of molten metal |
| 05/02/1991 | EP0424604A1 Plunger bell for treatment of melts |
| 04/24/1991 | CN1050902A Blast furnace ferromanganese dephosphorize method |
| 04/18/1991 | DE3933894A1 Appts. to prevent flue gas formation in metallurgical process |
| 04/04/1991 | DE3932162A1 Mfg. spherical graphite iron - using magnesium silicide additive (promoted by rare earth metal) to moderate vigorous reaction and to improve prod. |
| 04/04/1991 | DE3930729A1 Appts. to prevent flue gas formation in metallurgical process |
| 03/21/1991 | DE3929328A1 Appts. to prevent flue gas formation in metallurgical process |
| 03/05/1991 | US4997167 Ladle inoculant dispenser |
| 02/26/1991 | US4996402 Method and apparatus for continuously melting material by induction heating |
| 01/30/1991 | EP0410360A1 Agent for treating of castiron melts |
| 01/29/1991 | US4988387 Agent and process for desulfurizing molten metals |
| 01/27/1991 | CA2021505A1 Casting of molten iron and filters for use therein |
| 01/26/1991 | CA2021451A1 Agent for the treatment of cast iron melts, process for the production thereof and the use thereof for treating cast iron melts |
| 01/09/1991 | WO1991000928A1 Method of dephosphorizing chromium-containing hot metal with lowered oxidation loss of chromium |
| 01/02/1991 | CN1011046B Inoculant for gray pig iron |
| 11/22/1990 | EP0398674A2 Desulphurisation agent |
| 11/20/1990 | US4971623 Process for making as-cast ferritic spheroidal graphitic ductile iron |
| 11/13/1990 | US4970051 Process for the introduction of nitrogen into cast iron |
| 11/07/1990 | EP0395767A1 Method of obtaining spheroidal graphite cast iron |
| 11/07/1990 | CN1046760A Process for casting nodular graphite cast iron with as-cast ferrite by metal mould |
| 11/07/1990 | CN1010324B Shell and tube composite material suitable for treatment of melten metal bath |
| 10/31/1990 | EP0394443A1 Method and apparatus for preliminary treatment of hot metal |
| 10/31/1990 | CN1010222B Post-mix method and system for supply of powderized materials |
| 10/17/1990 | EP0392900A1 Process and apparatus for the treatment of a liquid with a gas |
| 10/17/1990 | CN1046195A High-efficiency inoculant of chrome-manganese series white iron |
| 10/03/1990 | CN1009836B Process for producing nodular iron |
| 09/26/1990 | EP0388816A1 Passivation of pyrophoric metals |
| 09/19/1990 | EP0387580A1 Agent and method for desulfurizing molten metals |
| 09/13/1990 | CA2011380A1 Agent and process for desulfurizing molten metals |
| 09/12/1990 | EP0233872B1 Method for the treatment of metals and alloys for the refining thereof |
| 09/11/1990 | US4956010 Composite tubes, desulfurized cast iron using sodium carbonate for desulfurization |
| 09/11/1990 | CA1273927A1 Amphoteric compound and use thereof |
| 09/05/1990 | EP0384987A1 Method and apparatus for continuously heating and melting material |
| 08/22/1990 | CN1009283B Cast-iron used for glass bottle mould |
| 08/15/1990 | CN1044608A Method for avoiding generation of flue gas in metallurgical process and during transportation of melted metal from metallurgical vessel to pouring vessel |
| 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 |
| 08/06/1990 | 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 |
| 08/01/1990 | CN1044300A Smelting pig iron with steel filings for nodular cast iron |
| 07/25/1990 | CN1044127A Dephosphorising and vanadium-main taining process of pig iron containing vanadium in electrical arc furnace |
| 07/24/1990 | US4943411 Process for treating molten iron with magnesium additions |
| 07/24/1990 | US4943317 Agent for desulphurizing iron melts, a process for the production thereof and a process for desulphurizing iron melts with the use of said agent |
| 07/17/1990 | US4941914 Desulfurization agent |
| 07/11/1990 | CN1043749A Method for charging rare-earth oxide dregs into cupola furnace |
| 07/11/1990 | CN1043746A Handling molten materials |
| 07/10/1990 | US4940215 Tiltable ladle with lid |
| 07/04/1990 | EP0375955A2 Melt-holding vessel |
| 06/27/1990 | EP0375007A1 Handling molten materials |
| 06/27/1990 | CA2003456A1 Melt-holding vessel |
| 06/26/1990 | US4936373 Uniformity and tensile strength |
| 06/20/1990 | CN1043162A Cast iron strong graphited inoculant |
| 06/13/1990 | CN1008378B Injection tube for fibred material |
| 06/12/1990 | CA1270111A1 Method of and apparatus for treating and subdividing a liquid using centripetal force |
| 05/29/1990 | US4928862 Tiltable ladle and cover for such ladle |
| 05/17/1990 | WO1990005197A1 Method of obtaining spheroidal graphite cast iron |
| 05/16/1990 | EP0368266A1 Process and cupola installation for the production of high-grade iron |
| 05/16/1990 | CN1042186A Method for regulating nodulizing rate of ductile iron in front of furnace |
| 05/08/1990 | US4922992 Melt-holding vessel and method of and apparatus for countergravity casting |
| 05/02/1990 | CN1007826B Inhibitor of globular or nodular graphites in creeping graphite cast iron and its use method |
| 04/18/1990 | EP0363749A1 Process for dephosphorizing molten metals by treating with alkali metals and alkaline earth metals |
| 04/10/1990 | US4915732 Desulfurizing iron |
| 04/05/1990 | DE3833325A1 Process for the continuous casting of magnesium-containing high-strength cast iron |
| 04/04/1990 | EP0361926A2 Melting and holding furnace |
| 04/04/1990 | CN1007433B Process for removing impure element from pig iron, steel, other metals and alloys |
| 04/03/1990 | US4913878 Adding tellurium and sulfur or selenium to molten sample; timing cooling curve between two predetermined temperatures |
| 03/29/1990 | DE3831354A1 Process for disposing of the calcium carbide-containing slag arising in the desulphurisation of molten cast iron with calcium carbide |
| 03/28/1990 | EP0360223A2 Agent and method for desulfurizing molten ferrous metal and a process for the production of this agent |
| 03/28/1990 | CN1007358B Electroslag refining process for molten casting iron of cupola furnace |
| 03/27/1990 | CA1266970A1 Nozzle arrangement for injecting gases or solid matter into a ladle containing molten metal |
| 03/20/1990 | US4909838 Coated magnesium granules |
| 03/14/1990 | CN1040393A Smelting process of compound cast iron from steel scrap |
| 03/14/1990 | CN1040392A Smelting process of thin-walled high strength compound cast iron |
| 03/13/1990 | US4908059 Feeding carbon containing solids and oxygen into precombustion chamber, effecting primary combustion and yielding reducing gas, separating residues, introducing reducing gas and oxygen into melting furnace for secondary combustion |
| 03/07/1990 | EP0357521A1 Process for the production of spheroidal graphite cast iron |
| 03/07/1990 | EP0172913B1 Process and device for removing impurities contained in melted iron flowing from shaft furnace |
| 03/07/1990 | CN1007066B Binder for press-forming inoculating block |
| 02/28/1990 | CN1006987B Method and apparatus for casting iron treated with magnesium |
| 02/15/1990 | DE3903444C1 Method and apparatus for transporting liquid metal from a metallurgical furnace to a casting vessel |
| 02/14/1990 | CN1039623A Process for treatment of molten cast iron with pure magnesium in open ladle |
| 02/14/1990 | CN1006809B Fine grained desulfurizer for molten iron |
| 02/14/1990 | CN1006769B Semi-continuous casting nodular cast iron pipe mfg. method |
| 02/13/1990 | US4900509 Process for manufacturing cast iron containing vermicular graphite |
| 02/13/1990 | US4900375 Magnesium-treated, decarburizingly-annealed cast iron material |
| 02/07/1990 | EP0354039A2 Inoculant dispensing apparatus for molted metal ladle |
| 02/07/1990 | EP0354038A2 Cover for tiltable ladle |
| 02/07/1990 | EP0354036A2 Tiltable ladle assembly |
| 02/07/1990 | EP0353804A1 Process for the production of cast iron with spheroidal graphite and/or vermicular graphite |
| 02/07/1990 | EP0353541A2 A method of recycling steel belted tires |
| 02/07/1990 | CN1006719B Granular desulfuring agent of melting iron and process for desulfuration of melting iron |
| 01/31/1990 | CN1039266A Preparing method of si-fe-bi instantaneous inoculant |
| 01/30/1990 | US4897242 Process for treating molten cast iron in an open ladle by means of pure magnesium |
| 01/23/1990 | CA1264544A1 Ceramic filter and method for using same |
| 01/18/1990 | DE3836549C1 Process for desulphurising molten crude iron |
| 01/17/1990 | EP0350989A1 Method and apparatus for manufacturing flake graphite |
| 01/03/1990 | EP0349167A2 Method of desulfurizing molten metal in a plasma fired cupola |
| 01/02/1990 | US4891822 Inductor apparatus for metal treatment |
| 12/26/1989 | US4889688 Adding spheroidization and graphitization promoters to molten metals, charging, molding; thin-shell cast articles |
| 12/26/1989 | US4889556 Method of recycling steel belted tires |
| 12/19/1989 | US4887661 Casting mold for foundry castings |
| 12/05/1989 | US4885145 For desulfurization of fuel gases from incomplete combustion of sulfur-containing hydrocarbons |