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| Number | Title | Issue Date |
| 5840433 | Coating compositions for articles of graphite-alumina refractory material A refractory article of manufacture comprises an article of graphite-alumina refractory material coated with at least one mineral having a sheet structure and a refractory oxide bond. The coating protects the article against thermal shock. A typical miner... | 11/24/1998 |
| 5656235 | Through airlock for refining furnance An airlock of integral one piece construction for the trough of a refining furnace, the airlock having opposed vertical walls with portions that fit snugly within the trough opposed vertical walls and downwardly angled extensions which, with a top wall th... | 08/12/1997 |
| 5647908 | Applicator for surface treatment agent for continuous casting process An applicator spreads a treatment agent, such as flux powder or granules, uniformly on the surface of molten metal during continuous casting. The flux is supplied to the applicator and argon or other gas under pressure is also supplied adjacent the applic... | 07/15/1997 |
| 5632326 | Mould and a method for the casting of metals and refractory compositions for use therein A mold for metal casting contains a bonded refractory composition comprising hollow alumina-containing microspheres in which the alumina content is at least 40% by weight. The mold may be an ingot mold and the bonded refractory composition may be in the f... | 05/27/1997 |
| 5603859 | Vessel outlet A rotary valve for use in the release of a molten solid from a vessel comprises a valve member having a passage, inlets to the passage being present in the head of the member. The valve member mates with a wall of a seating member, the wall having a talle... | 02/18/1997 |
| 5577549 | Mold fluxes used in the continuous casting of steel A mold flux for the continuous casting of steel (including ultra low carbon steel) comprises refractory metal oxide, at least one fluxing agent, a binder, and expandable graphite in the amount of 0.3-1.0% by weight, the expandable graphite having a size l... | 11/26/1996 |
| 5538070 | Mould fluxes and their use in the continuous casting of steel A granular mould flux for use in the continuous casting of steel comprises refractory metal oxide, one or more fluxing agents, a binder and 0.1% to 3% by weight based on the weight of the flux of an expanding agent such as expandable perlite, expandable v... | 07/23/1996 |
| 5520823 | Filters for light metals Filters for filtering molten light metals comprise a reticular foam formed from a composition comprising graphite, wollastonite, silica and a borosilicate glass and consist of a crystalline phase comprising graphite and wollastonite dispersed in a substan... | 05/28/1996 |
| 5518153 | Tundish impact pad A tundish impact pad has a non-uniform construction with a long dimension and a short dimension perpendicular to the long dimension, the long dimension of the impact pad disposed aligned with the long dimension of the tundish on the tundish floor. The imp... | 05/21/1996 |
| 5403866 | Foamable resin composition and a thermoplastic foamable pattern and metal casting manufacturing method using said composition Disclosed are a foamable resin composition which comprises a copolymer with a weight-average molecular weight of 150,000-350,000 produced by copolymerization of a monomer mixture of 55-85% by weight of styrene and 45-15% by weight of a methacrylic acid es... | 04/04/1995 |
| 5374036 | Metallurgical pouring vessels A method and product improve the positioning of loose anti-skulling material in the outlet nozzle zone of a metallurgical pouring vessel. The formation of skull in the outlet nozzle zone of a metallurgical pouring vessel is inhibited by positioning in the... | 12/20/1994 |
| 5364570 | Ceramic material A lightweight ceramic material is provided, useful for example as thermal insulation, kiln furniture or for metallurgical applications. Accordingly, a lightweight fired ceramic material comprises a set porous material in the form of a freeze-gelled ceramic sol... | 11/15/1994 |
| 5294648 | Alkaline resol phenol-aldehyde resin binder composition A binder composition for producing articles of bonded particulate material such as foundry molds or core comprises an alkaline aqueous solution of a resol phenol-aldehyde resin, an oxyanion which can form a stable complex with the resin, and an ethylene g... | 03/15/1994 |
| 5291938 | Vertically parted mould having a feeder unit therein A mould for metal casting which is vertically parted into two parts, comprises one or more mould cavities and a plurality of feeder cavities each communicating with a mould cavity, and has a feeder unit comprising a plurality of interconnected feeder slee... | 03/08/1994 |
| 5242957 | Alkaline resol phenol-aldehyde resin binder compositions containing phenyl ethylene glycol ether A binder composition for producing articles of bonded particulate material such as foundry molds or cores comprises an alkaline aqueous solution of a resol phenol-aldehyde resin, an oxyanion which can form a stable complex with the resin, and a phenyl eth... | 09/07/1993 |
| 5240492 | Metallurgical fluxes A metallurgical flux is provided as bonded particulates in granular or briquette form, which contains fluxing ingredients, binder and an expanding agent whereby action of heat in contact with molten metal causes expansion of the expanding agent to break d... | 08/31/1993 |
| 5217929 | Refractory composition A foamable lining composition to be used as an expendable lining over a permanent refractory lining in a molten metal handling vessel, e.g. a tundish, comprises a particulate refractory filler material, a binder, a foaming agent and water. Calcined magnes... | 06/08/1993 |
| 5217789 | Refractory supports An improved refractory support (kiln furniture) and a method of manufacture. The composition of the refractory support reduces the likelihood that it will adhere to the article which it is supporting during manufacturing. The kiln furniture is formed from... | 06/08/1993 |
| 5215126 | Insulation sheaths An insulation sheath for a pipe in a furnace is provided. The sheath has excellent insulation properties together with adequate resistance to the corrosive environment and thermal shock conditions. A pre-formed, substantially C-shaped, elongate member sha... | 06/01/1993 |
| 5198478 | Alkaline resol phenol-aldehyde resin binder compositions A binder composition for producing articles of bonded particulate material such as foundry moulds or cores comprises an alkaline aqueous solution of a resol phenol-aldehyde resin, an oxyanion which can form a stable complex with the resin, and pyrrolidone... | 03/30/1993 |
| 5190897 | Ceramic foam filters A ceramic foam filter, particularly for filtering molten iron, is formed from a composition comprising silicon carbide, alumina, silica derived from colloidal silica sol and alumino-silicate fibres, which has been fired at such a temperature that the filt... | 03/02/1993 |
| 5180759 | Exothermic compositions An exothermic composition comprises a particulate readily oxidizable metal such as aluminum, magnesium or silicon and an organic fluorine-containing compound, and usually an oxidizing agent for the readily oxidizable metal. The preferred organic fluorine-... | 01/19/1993 |
| 5180506 | Hot top lining assembly for ingot moulds A hot top lining assembly for an ingot mould or for an ingot mould head box is made up of four boards of refractory material and fixed together by means of a guide bar incorporated in a wedge-shaped portion in the lateral edge of one of the boards mating ... | 01/19/1993 |
| 5178826 | Method and apparatus for the production of nodular or compacted graphite iron castings A method for producing nodular or compacted graphite iron castings in a mould having a sprue, an ingate and a mould cavity, having a first part below and a second part above the level of the ingate, comprises delivering particulate magnesium-containing an... | 01/12/1993 |
| 5174752 | Support units A support unit, e.g. a setter, is designed for convenience of stacking both in use and in the stored condition. Each unit (10, 20, 20A) is of circular plan outline and has a rim (13) having alternate upwardly-and downwardly-disposed castellations (14 and ... | 12/29/1992 |
| 5169542 | Filters for light metals Filters for filtering molten light metals comprise a reticular foam having a composition comprising graphite, wollastonite, silica and an alkali phosphate glass. The filters have a low hardness and can readily be machined accurately from large pieces of t... | 12/08/1992 |
| 5165958 | Method for the sealing of mine stoppings A method utilizing non-reaction fillers in the sealing of mine stoppings, such as concrete block under wet or humid conditions, the method comprising providing (a) from about 10 to about 85% by weight of a water soluble alkali metal silicate, (b) about 0.... | 11/24/1992 |
| 5162393 | Production of foundry sand moulds and cores Foundry sand cores are produced by a method comprising the steps of: (1) providing a core box to contain the core (2) injecting into the core box a mixture of sand and a binder capable of being cured by means of carbon dioxide gas so as to form the core (3) passing... | 11/10/1992 |
| 5143340 | Load support A support between the floor (22) and the roof (24) of e.g. a mine stope, is made by using an inflatable container comprising an inner bag (10), received in an outer bag (12). An inlet valve (14) extends through both bags as does a relatively higher pressu... | 09/01/1992 |
| 5139239 | Lining of molten metal handling vessels The invention relates to the provision of an expendable inner lining (13) over the relatively permanent refractory lining (11) of a molten metal handling vessel (10), in which venting means (25) are provided to aid venting and drying of the slurry from wh... | 08/18/1992 |
| 5110096 | One-piece tundish lining A preformed expendable lining of high density, erosion resistant, castable refractory material is provided for a metallurgical vessel, such as a tundish. The lining is integrally formed in one piece and has a floor, walls, and at least one integrally form... | 05/05/1992 |
| 5096497 | Cement composition A hardened cement is prepared by mixing together two slurries, one comprising water and a cement component and the other comprising water, beta anhydrite and calcium oxide and or calcium hydroxide. According to the invention the cement component of the fi... | 03/17/1992 |
| 5033531 | Casting of molten iron and filters for use therein Molten iron is cast into a mould through a filter located in the runner system of the mould using a filter comprising a body having a plurality of cells, at least some of the cells having their walls at least partially coated with a first layer of wax and... | 07/23/1991 |
| 5004545 | Ceramic foam filter apparatus A filter for use in the filtration of molten metals comprises a ceramic foam having a gasket made from fibrous material surrounding its peripheral surface and a metallic foil, such as aluminum foil, fixed to the gasket, for example by means of an adhesive... | 04/02/1991 |
| 4995592 | Purifying molten metal The invention relates to a means of purifying molten metal, particularly steel, by the removal of impurities/inclusions during continuous casting. The molten metal (3) is passed in a tundish (1) through a vertical array of baffles (8) that are spaced apart tra... | 02/26/1991 |
| 4992103 | Cementitious compositions A dry composition comprising an aluminous cement and a calcium sulphate, and preferably an accelerator and a water soluble fluoride may be reacted with water in a wide range of proportions to form a rapid setting material which develops high compressive s... | 02/12/1991 |
| 4984933 | Grouting method and apparatus A gelling agent is added to a fast setting cement slurry comprising water, cement and anti-washout retarder and the mix is injected into a void containing running water and allowed to set to form rapidly a material of high compressive strength.... | 01/15/1991 |
| 4985489 | Production of articles of bonded particulate material and binder compositions for use therein A binder composition for producing articles of bonded particulate material such as foundry moulds or cores comprises an alkaline aqueous solution of a resol phenol-aldehyde resin and an oxyanion capable of forming a stable complex with the resin the amoun... | 01/15/1991 |
| 4979990 | Foamable composition A composition to be mixed with water to form rapidly a lightweight high strength set product, as well as a method of placing such compositions at a desired location and the reaction produced. The composition comprises about 1 to about 10% by weight of a g... | 12/25/1990 |
| 4977209 | Production of articles of bonded particulate material and binder compositions for use therein from phenol-formaldehyde and oxyanion A binder composition for producing articles of bonded particulate material such as foundry moulds or cones comprises an alkaline aqueous solution of a resol phenol-aldehyde resin and an oxyanion capable of forming a stable complex with the resin the amoun... | 12/11/1990 |
