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| Number | Title | Issue Date |
| 4427185 | Method and apparatus for gaseous cleaning of aluminum A gas sparging apparatus particularly useful with molten aluminum includes a sparging box having an inlet, an outlet for the metal with a plurality of baffles arranged to alternately project from the top and bottom of the box into the molten metal stream.... | 01/24/1984 |
| 4426068 | Rotary gas dispersion device for the treatment of a bath of liquid metal The invention relates to a rotary gas dispersion device for the treatment of a bath of liquid metal such as aluminum and its alloys, comprising a cylindrical rotor equipped with blades immersed in the bath, connected to a hollow control shaft for the supp... | 01/17/1984 |
| 4402741 | Process for the precise and continuous injection of a halogenated derivative in the gaseous state into a liquid metal The invention relates to a process and an apparatus for the precise and continuous injection of a halogenated derivative, which is liquid at ambient temperature, into a liquid metal such as aluminum and aluminum-based alloys. The process involves withdraw... | 09/06/1983 |
| 4401295 | Apparatus for treating molten metal An apparatus for treating a molten metal to a high quality by means of applying gas treating and filtration consecutively in a simple compact treating vessel. The vessel is divided into two parts, i.e., fluxing and filtration compartments, by a vertical p... | 08/30/1983 |
| 4392888 | Metal treatment system Molten aluminum or other metals are purified by contacting with a fluorocarbon, such as CCl2 F2, in order to decrease the amount of impurity metal elements along with gas and inclusions therein preferably in the presence of an agitat... | 07/12/1983 |
| 4357004 | Apparatus for refining molten metal Apparatus for refining molten metal comprising a vessel, a rotor, and a stator having a graphite/metal joint above the vessel cover wherein said joint is provided with cooling passages and wherein cross-sectional and distance relationship are established ... | 11/02/1982 |
| 4351514 | Apparatus for purifying molten metal An improved molten metal pump and gas injection apparatus comprising a submersible pump housing 10 enclosing a rotatable impeller 30, an impeller drive 12 supported above the housing and an elongate drive shaft 16 operatively connected to the impeller. Ro... | 09/28/1982 |
| 4317679 | Method and apparatus for the degassing of molten metal An improved method and apparatus for degassing molten metal is disclosed in which the molten metal is passed in countercurrent relationship with a fluxing gas which is introduced through a sparger plate provided with a plurality of orifices of controlled ... | 03/02/1982 |
| 4295883 | Device and method for introducing gases into molten metal Gases can be introduced in a finely divided form into molten metal using a jet-mixing facility which is designed on the Venturi principle and is made of a suitable refractory material. Melt flow rates of 2-100 m/s are measured in the cylindrical center pi... | 10/20/1981 |
| 4235627 | Method and apparatus for the degassing of molten metal An improved method and apparatus for degassing molten metal is disclosed in which the molten metal is passed in countercurrent relationship with a fluxing gas which is introduced through a sparger plate provided with a plurality of orifices of controlled ... | 11/25/1980 |
| 4191559 | Skim removal A method of removing skim from molten metal comprises providing a body of molten metal and passing a fluxing gas therethrough to carry skim to the surface of the metal. The skim on the surface is treated to substantially reduce the amount of molten metal ... | 03/04/1980 |
| 4177065 | Method for the degassing and filtration of molten metal The disclosure teaches an improved method and apparatus for the treatment of liquids with gases and especially for use in the degassing and filtration of molten metal, especially aluminum, using an apparatus which employs a swirling tank reactor. The swir... | 12/04/1979 |
| 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 |
| 4159104 | Apparatus for inline degassing and filtration of molten metal The disclosure teaches an improvement in the degassing and filtration of molten metal, especially aluminum, using an apparatus which employs a pair of sequentially placed, removable filter-type plates and at least one fluxing gas inlet positioned therebet... | 06/26/1979 |
| 4144054 | Process for the removal of impurities from aluminum melts The process for removing impurities, in particular for removing sodium chloride from aluminum melts, employs reactive chlorine which is introduced into the melt and then passes with the melt through a filter bed. Aluminum chloride formed by the reaction o... | 03/13/1979 |
| 4138245 | Process for the removal of impurities from aluminum melts Sodium is removed from aluminum by introducing a gaseous chlorinating agent for molten aluminum into a body of molten aluminum which has a content of sodium and passing the resulting mixture through a filter which carries a liquid metal chloride coating a... | 02/06/1979 |
| 4052199 | Gas injection method Gas is injected into molten metal, such as aluminum, to purify the molten metal either of dissolved gases (degassing), or of dissolved solids such as magnesium ("demagging"). The apparatus for accomplishing this injection contains two metallic bath chambe... | 10/04/1977 |
| 4003738 | Method of purifying aluminum A metallurgical process wherein aluminum carbide or other carbides are removed from partially pure aluminum formed by decomposition of an alkyl aluminum compound by treating the aluminum in molten form under a molten cover flux with a stream of chlorine.... | 01/18/1977 |
| 3972709 | Method for dispersing gas into a molten metal A method of and apparatus for uniformly dispersing a gas into a molten metal bath by supplying gas to a rotatably mounted distributor located at a submerged zone beneath the bath surface while preventing physical contact between the gas and the molten met... | 08/03/1976 |
| 3958981 | Process for degassing aluminum and aluminum alloys The process for degassing aluminum and aluminum alloys comprising treating the molten metal with a gaseous mixture consisting essentially of fluorine, hydrofluoric acid, carbon monoxide and carbon dioxide. Fluorine, hydrofluoric acid, carbon monoxide and ... | 05/25/1976 |
| 3958980 | Process for removing alkali-metal impurities from molten aluminum A process for removing alkali metal impurities from molten aluminum while avoiding the emission of environmentally harmful gases and fumes. The process comprises introducing a sparging gas comprising a mixture of an inert gas and a gas selected from the g... | 05/25/1976 |
