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| Number | Title | Issue Date |
| 6960239 | Process and apparatus for adding particulate solid material to molten metal An apparatus is provided for the treatment of molten metal, e.g. aluminum, with a particulate treatment agent and a gas. This includes a vessel for holding molten metal, a rotary device for breaking up particulate treatment agent and gas within the molten metal and ... | 11/01/2005 |
| 6755889 | Process for cleaning and purifying molten aluminum A process is described for treating molten metal with a particulate treating agent. A melt of a metal, e.g. aluminum, is provided in a treatment vessel such as a ladle and a mixing impeller is positioned substantially below the surface of the molten metal. The impel... | 06/29/2004 |
| 6602318 | Process and apparatus for cleaning and purifying molten aluminum A process is described for treating molten metal with a particulate treating agent. A melt of a metal, e.g. aluminum, is provided in a treatment vessel such as a ladle and a mixing impeller is positioned substantially below the surface of the molten metal... | 08/05/2003 |
| 6589313 | Process and apparatus for adding particulate solid material to molten metal An apparatus is provided for the treatment of molten metal, e.g. aluminum, with a particulate treatment agent and a gas. This includes a vessel for holding molten metal, a rotary device for breaking up particulate treatment agent and gas within the molten... | 07/08/2003 |
| 6375712 | Method of removal of light metals from aluminum Improved apparatus and method are described for the removal of light metals; sodium, lithium, calcium and magnesium, from virgin aluminum tapped from a Hall Heroult reduction cell using LiF-modified or LiF+MgF2 electrolyte. The method is perfor... | 04/23/2002 |
| 6336955 | Method of eliminating phosphorus and/or antimony from molten aluminum An improved method of eliminating phosphorus and/or antimony from molten aluminum containing phosphorus and/or antimony is provided, including the step of adding magnesium or calcium to the molten aluminum maintained at a temperature of 650° to 850° C. ... | 01/08/2002 |
| 5968223 | Method for heating molten metal using heated baffle A method of heating a body of molten metal passing through a treatment bay. The method comprises providing a body of molten metal in a treatment bay and providing a baffle heater in the treatment bay to contact the molten metal. The baffle heater is compr... | 10/19/1999 |
| 5441697 | Method of producing TiC whiskers and metallic composites reinforced by TiC whiskers Very fine TiC whiskers having a mean diameter smaller than 1 micron are generated by pellets including Ti powder and graphite powder being added to a molten mass of pure Al or an Al alloy, or by a graphite powder being added to a molten mass of an Al allo... | 08/15/1995 |
| 5401338 | Process for making metal-matrix composites reinforced by ultrafine reinforcing materials products thereof A process for making metal-matrix composite includes adding ultrafine reinforcing material having a particle size as fine as 0.05 μm into the metal alloy matrix in a refining furnace to be homogeneously dispersed in the matrix for producing metal-matrix ... | 03/28/1995 |
| 5104616 | Method for production of master alloys for grain refining treatment of aluminum melts A method for the production of master alloys intended for grain refining of aluminum melts and being of the type which comprises of aluminum and 1-15 percent by weight titanium, where titanium is present in the form of intermetallic crystals of titanium a... | 04/14/1992 |
| 5080715 | Recovering clean metal and particulates from metal matrix composites A process is described for removing all reinforcing particles contained in metal matrix composite scrap materials. This new technique involves providing a treatment vessel for holding a melt of an aluminum matrix composite to be recycled. Heating means ar... | 01/14/1992 |
| 4935055 | Method of making metal matrix composite with the use of a barrier A net shaped ceramic-reinforced aluminum matrix composite is produced by forming a permeable mass of ceramic material with a defined surface boundary having a barrier, and contacting a molten aluminum-magnesium alloy with the permeable mass of ceramic mat... | 06/19/1990 |
| 4913735 | Flux injector lance for use in processing aluminum and method A lance and method for injecting particulate matter into molten metal is disclosed. The lance includes an injector conduit for introducing particulate matter into a molten metal. A heat removal site surrounds at least a portion of the injector conduit. An... | 04/03/1990 |
| 4832740 | Process for removing alkali and alkaline earth elements from aluminum melts A process for removing alkali and alkaline earth metals from aluminum melts is such that aluminum fluoride powder is fed continuously to a carrier gas in an amount of 1-10 g/min. and the gas/powder mixture introduced continuously via lances into the melt ... | 05/23/1989 |
| 4783057 | Metal refining with refractory coated pipe Disclosed is a heat resistant composite comprising a refractory coating on a metal substrate. The refractory coating is provided by mixing a refractory mortar with water, impregnating a water absorbent web of fibrous material with the liquid mixture, plac... | 11/08/1988 |
| 4767598 | Injection apparatus for introduction of a fluid material into a molten metal bath and associated method An injection apparatus for introducing fluid material, such as a reactive element to a molten metal bath while resisting undesired oxidation. The injection apparatus consists of a body assembly having a chamber defined therein, and inlet and outlet passag... | 08/30/1988 |
| 4735773 | Inertial mixing method for mixing together molten metal streams A system is disclosed for efficiently mixing streams of molten metal to form a molten metal alloy while inhibiting oxidation and introduction of impurities such as hydrogen gas into the molten metal which comprises passing a first molten metal stream at a... | 04/05/1988 |
| 4670050 | Method of treating molten aluminum by removing hydrogen gas and nonmetallic inclusions therefrom Hydrogen gas and nonmetallic inclusions are removed from molten aluminum by a method comprising applying over the surface of molten aluminum in a container a mixture of at least one compound selected from the group consisting of boron oxides, boric acids ... | 06/02/1987 |
| 4605438 | Apparatus and method for forming a wear-resistant metal composition The invention described herein is an apparatus and method for forming a wear-resistant metal composition. As a specific example, aluminum oxide powder is added to a magnesium alloy to provide a wear-resistant magnesium composition. The magnesium alloy, as... | 08/12/1986 |
| 4556419 | Process for treating molten aluminum to remove hydrogen gas and non-metallic inclusions therefrom Hydrogen gas and non-metallic inclusions are removed from molten aluminum by a process comprising the steps of maintaining an atmosphere containing BF3 gas in a treating vessel above the surface of molten aluminum placed therein, introducing a ... | 12/03/1985 |
| 4354869 | Process for purging aluminum and aluminum alloy melts of small quantities of alkali and alkaline earth metals Small quantities of alkali metal and alkaline earth metal impurities are removed from an aluminum melt by introducing a source of sulfur such as elemental sulfur, which combines with the impurity to form an impurity-containing slag, purging the melt with ... | 10/19/1982 |
| 4325539 | Device for treating a molten metal or alloy using liquid and solid flux The invention provides apparatus for treating a molten metal or alloy using liquid and solid flux, the invention comprising apparatus for passing the metal or alloy through a column provided with an outlet siphon lined with solid granules and liquid flux,... | 04/20/1982 |
| 4166604 | Mold for fabricating a sparger plate An improved method for fabricating a ceramic sparger plate for use in the degassing of molten metal is disclosed in which a castable ceramic is poured into a mold which contains an array of vertically disposed strands which are removed subsequent to the c... | 09/04/1979 |
| 4007062 | Reinforced composite alloys, process and apparatus for the production thereof This invention relates to improved process and apparatus for producing reinforced composite light alloys. The improved apparatus comprises means for feeding a fluidized mixture of particulate additions, carried by a neutral gas, to a crucible in which a b... | 02/08/1977 |
| 3993477 | Sodium addition to aluminum Our invention relates to the feeding of sodium to aluminum containing silicon as an alloying element in hypoeutectic percentages by flowing the molten aluminum through a trough and feeding a tube which contains sodium within it into the aluminum in the tr... | 11/23/1976 |
| 3955970 | Continuous melting of aluminum scrap A continuous melting process wherein aluminum can scrap or other charge is introduced into a moving stream of superheated molten aluminum and thereby rapidly melted, the stream then being subjected to the fluxing action of a gaseous flux substantially imm... | 05/11/1976 |
