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| Number | Title | Issue Date |
| 7918916 | Calcium-silicate based slag for treatment of molten steel The present invention relates to a calcium-silicate based slag having a phosphorus content of less than 3 ppmw. The invention further relates to a method for producing low phosphorus calcium-silicate based slag, where molten calcium-silicate based slag is treated wi... | 04/05/2011 |
| 7658782 | Lime-based additive for steel smelting and the preparation method thereof This invention belongs to ferrous metallurgy field, and in particular relates to a lime-based additive for steel smelting which is used in the electric furnace refining and steel casting process for carbureting and deoxidation and the preparation method thereof. The... | 02/09/2010 |
| 6328781 | Mold cover powder for continuous casting of steel, especially very-low-carbon steels A method of making a powder for covering an ingot mold for the continuous casting of steel, in particular steels with ultra-low carbon content. The powder comprises a base powder and particles of at least one metal nitride, its free carbon content being b... | 12/11/2001 |
| 6316125 | Aluminum welding process and composition for use in same The invention provides a new and improved process and exothermic reaction mixture for producing molten weld metal. The molten weld metal is used in joining one metallic piece with at least one other metallic piece. The process and exothermic reaction mixt... | 11/13/2001 |
| 6293988 | Inoculant and inoculant method for gray and ductile cast irons A new technique for producing ferrosilicon free inoculating agents for gray and ductile irons utilizing oxy-sulfide forming elements combined with sulfur and oxygen and 1) mechanically pressed into an insert or tablet for placement into foundry sand molds... | 09/25/2001 |
| 6171362 | Method for refining molten aluminum alloy and flux for refining molten aluminum alloy A method for refining molten Al alloy and a non-halogen based flux for refining molten Al alloy which make it possible to perform refining such as removal of gas and inclusions at a high reduction level, and are free from a problem that the flux remains i... | 01/09/2001 |
| 6136108 | Strontium master alloy composition having a reduced solidus temperature and method of manufacturing the same Master alloy with 20-80% strontium, preferably 0.01-2.0% of aluminum and/or copper, and the balance essentially zinc plus impurities, and a method for preparing same and a method for modifying the microstructure of nonferrous alloys with said master alloy... | 10/24/2000 |
| 6059853 | Production of powder A method of producing coated powder material is provided. In the method, molten metal or metal alloy is caused to fall in a stream (3) and is then atomized into a spray. A liquid or solid material of different composition is introduced and caused to conta... | 05/09/2000 |
| 6051049 | Utilization of strontium aluminate in steelmaking Novel utilizations of strontium aluminate, a by-product of the manufacture of strontium, are disclosed in connection with the art of steelmaking. It is useful as a synthetic slag covering for molten iron or steel, as well as in the foaming slag practice, ... | 04/18/2000 |
| 5876482 | Mould cover for continuous casting of steel, especially very-low-carbon steels A powder for covering an ingot mold for the continuous casting of steel, in particular steels with ultra-low carbon content. The powder comprises a base powder and particles of at least one metal nitride, its free carbon content (%Cfree) being ... | 03/02/1999 |
| 5833881 | Composition for inhibiting deposits in the calcination of fluxed iron ore pellets A stable aqueous solution comprising a water soluble salt of a magnesium compound, a surfactant and a calcium salt inhibitor is used to reduce deposits in kilns or furnaces used to make iron ore agglomerates, known as pellets, during iron ore calcination.... | 11/10/1998 |
| 5782956 | Casting flux The invention relates to a casting flux for steels or alloys on an iron, nickel or cobalt basis which make heavy demands on the degree of oxidic purity for continuous or ingot casting and contain as the main components calcium oxide (CaO), aluminium oxide... | 07/21/1998 |
| 5591247 | Agglomerated product with paper fibers A conglomerated material based on metallurgical by-products and characterized in that it contains 2-10% of fibers, 9-25% wt of an alkaline earth metal hydroxide, and % wt of water.... | 01/07/1997 |
| 5516734 | Aluminum nitride refractory materials and methods for making the same The present invention broadly relates to novel aluminum nitride matrix ceramic composite bodies for use as refractory materials and methods for making the same. The refractory materials are useful in environments which are corrosive, erosive, abrasive and... | 05/14/1996 |
| 5028257 | Metallurgical flux compositions A metallurgical flux composition comprising calcium oxide, alumina, magnesium oxide and silica contains 22-35% by weight magnesium oxide and has a weight ratio of calcium oxide to magnesium oxide of from 0.6:1 to 2.5:1. The preferred composition contains ... | 07/02/1991 |
| 4795491 | Premelted synthetic slag for ladle desulfurizing molten steel A premelted synthetic slag for ladle desulfurizing molten steel and a related method for desulfurizing molten steel employ high MgO content calcium-aluminate synthetic slag. A preferred slag composition contains 0.1-3.0% by weight of vanadium oxide. A par... | 01/03/1989 |
| 4738715 | Desulfurizing reagent for hot metal The invention provides an injectable powdered reagent for the desulfurization of hot metal, such as iron external to the blast furnace. The reagent includes a slag-forming component comprising burnt lime, metallurgical fluorspar, and petroleum coke. Magne... | 04/19/1988 |
| 4738719 | Steel making flux Phosphorus furnace slag is used as a ladle flux and/or as a tundish flux in the continuous casting of steel. The phosphorus furnace slag uniquely combines the properties of thermal insulation, oxidation protection and inclusion absorption necessary to fun... | 04/19/1988 |
| 4695318 | Method of making steel There is practiced a method of making low carbon silicon steel in which the lining of the ladle is made of dolomite instead of fireclay or alumina, and there is added to the ladle, before the metal is teemed into it, a pre-melted or pre-fused mixture cont... | 09/22/1987 |
| 4687512 | Desulfurizing mixture for metal melts, process for making it, and process for desulfurizing liquid metal therewith Mixture for desulfurizing metal melts based on calcium carbide, calcium oxide, alkaline earth metal carbonates, aluminum oxide, chemically unbonded carbon and alkali metal carbonates, if any. The desulfurizing mixture contains 0.3-4.5 wgt % calcium fluori... | 08/18/1987 |
| 4661151 | Treating agent for desulfurizing molten steels and method for treating molten steels A treating agent of molten steel according to the present invention is used for desulfurization molten steel for desulfurizing it in a reaction vessel which is lined with a basic refractory containing MgO, and consists of CaO, CaF2 and MgO and ... | 04/28/1987 |
| 4592777 | Method, process and composition for desulfurizing pig-iron melts A method and composition for desulfurization of hot metal is disclosed. To the hot metal there is added a composition comprising calcium carbide, a hydrogen releasing compound and magnesium.... | 06/03/1986 |
| 4589915 | Additive for metallurgic liquids being effective to improve the characteristics of metal or metal alloy articles of manufacture An additive for metallurgic liquids is disclosed which is effective to efficiently remove slag therefrom and comprises at least one colloidal substance mainly consisting of colloidal silica. The additive may include such minerals as opal, kieselgur, tripo... | 05/20/1986 |
| 4561894 | Calcium oxide based flux compositions A particulate flux composition suitable for desulphurizing and/or dephosphorizing molten ferrous metals and for use as a mould flux comprises prefused particles comprising calcium oxide and at least one other component, such as alumina, iron oxide, calciu... | 12/31/1985 |
| 4541867 | Varnish-bonded carbon-coated magnesium and aluminum granules Varnish-bonded, carbon-coated metal granules are provided, the metal granules being preferably selected from the group consisting of magnesium, aluminum and alloys thereof. The coating may optionally contain at least one calcium compound, e.g., at least o... | 09/17/1985 |
| 4540436 | Treatment agent for cast iron melts and a process for the production thereof The present invention provides a treatment agent for cast iron melts based upon ferrosilicon magnesium with a silicon content of from 40 to 80% by weight and a magnesium content of from 0.5 to 15% by weight, said agent being in the form of granules with a... | 09/10/1985 |
| 4528035 | Composition and process to create foaming slag cover for molten steel Slag formed in steel melt operations is foamed to create a protective cover using a composition comprised essentially of calcium oxide.... | 07/09/1985 |
| 4436563 | Flux for overlay welding A flux for overlay welding, essentially containing by weight 30-70% of CaF2, 10-30% of Al2 O3, 1-15% of CaO, 5-25% of SiO2 and 5-25% of MgO such that the total amount of CaF2, Al2 O3 | 03/13/1984 |
| 4420333 | Powdery desulfurizer composition A powdery desulfurizer composition for injection desulfurization of molten iron, said composition comprising 30 to 90% by weight of quicklime and 70 to 10% by weight of diamide lime.... | 12/13/1983 |
| 4417924 | Steelmaking additive composition Steelmaking additive compositions and process of use, said compositions providing flux solubilization, desulfurization and/or removal of inclusions. The compositions comprise from about 25 to 50 wt % lime and about 75 to 50 wt % calcium aluminate; alterna... | 11/29/1983 |
| 4361442 | Vanadium addition agent for iron-base alloys Addition of vanadium to molten iron-base alloys using an agglomerated mixture of V2 O5 and calcium-bearing reducing agent.... | 11/30/1982 |
| 4338142 | Melting flux composition for submerged arc welding A melting flux composition for submerged arc welding which comprises 6-15% by weight of MgO, 5-10% by weight of CaO, 10-20% by weight of CaF2, 14-19% by weight of Al2 O3, 20-25% by weight of TiO2, 15-20% by weig... | 07/06/1982 |
| 4318822 | Production of agent for desulfurizing crude iron and steel melts The invention relates to the production of an agent for desulfurizing crude iron and steel melts, the desulfurizing agent being based on calcium carbide containing calcium oxide. To this end, a calcium carbide/calcium oxide/starting melt mixture with a Ca... | 03/09/1982 |
| 4295891 | Blanket powder for covering a molten metal bath A blanket powder for covering a molten metal bath in order to prevent oxidation and to provide heat insulation contains, in addition to the ash of cereal hulls, approximately 5 to 50% by weight of non-calcined cereal hulls. The powder can thus be transpor... | 10/20/1981 |
| 4263043 | Desulfurizing agent for injection A desulfurizing agent for injection mainly consisting of lime powders having a particle diameter which allows at least 50 wt. % of the lime powders to pass through a screen mesh of 100 μm and containing 0.015 to 1.0 wt. % of silicone oil surfactant, 10 t... | 04/21/1981 |
| 4159906 | Method and composition for the desulfurization of molten metals Molten metals, especially molten pig iron, are desulfurized by contacting them with a composition comprising calcium carbide or calcium cyanamide and an additive agent yielding water or hydrogen at the temperature of the molten metal; preferred as the add... | 07/03/1979 |
| 4078915 | Method and composition for the desulfurization of molten metals Molten metals, especially molten pig iron, are desulfurized by contacting them with a composition comprising calcium carbide or calcium cyanamide and an additive agent yielding water or hydrogen at the temperature of the molten metal; preferred as the add... | 03/14/1978 |
| 4072512 | Charge for manufacturing aluminium-silicon alloys A charge comprising a silica-alumina material and a carbonaceous reducing agent which comprises a mixture of petroleum coke and carbon black.... | 02/07/1978 |
| 4035892 | Composite calcium clad material for treating molten metals Composite calcium materials to be used for welding or refining steel, nickel, nickel alloy or iron alloy, which are produced by cladding a sheath of aluminum, iron or alloys thereof and a core consisting of 1. a mixture or an alloy of calcium or an alloy there... | 07/19/1977 |
| 3964899 | Additives to improve slag formation in steelmaking furnaces In steelmaking, the formation of a lime-based desulphurising slag is promoted by adding, with the lime, an additive including at least 20% by weight Al2 O3 and including one or more of oxide of iron, magnesium, manganese and titanium... | 06/22/1976 |
