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Class 75/682 - And adding solid


Subclass of Class 75 - Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
Definition: Process in which a solid is added to molten metal that contains
No. of patents: 14
Last issue date: 08/02/2011


NumberTitleIssue Date
7988763Use of a binary salt flux of NaCl and MgClfor the purification of aluminium or aluminium alloys, and method thereof
A method for the purification of a metal selected from the group consisting of aluminum and aluminum alloys, wherein the metal is in a liquid phase and is contacted with a salt flux consisting of a binary mixture of NaCl and MgCl2. Preferably, more than 2...
08/02/2011
6679936Molten metal degassing apparatus
A tool or fluxing head for fluxing molten metal that comprises a fluxing gas supply line that communicates with the interior of an inverted plunger cup providing a hollow interior into which refining agents and other additives that are to be introduced in...
01/20/2004
6375712Method 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
6336955Method 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
4861370Process for treating molten aluminum alloy with powdered flux
This invention relates to powdered flux compositions and their use in purifying molten mixtures of aluminum and silicon before casting. The powdered flux compositions comprise a carbonate, a sodium and hydrogen free fluoride, and amorphous or encapsulated...
08/29/1989
4668351Method of producing aluminum
A method of purifying aluminum contaminated with cerium or other rare earth metal comprises bringing the molten metal into contact with a halogenating agent. Preferred halogenating agents are aluminum fluoride for reducing cerium levels to around 0.1% to ...
05/26/1987
4556419Process 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
4525212Decontamination of aluminum by chlorination
Decontaminating an aluminum melt by chlorination wherein the melt is blanketed with a layer of molten flux containing calcium oxide to consume any Cl2 and/or AlCl3 offgasses from the melt....
06/25/1985
4402741Process 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
4392888Metal 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
4354869Process 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
4325539Device 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
4166604Mold 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
3955970Continuous 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
 
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