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Class 75/685 - Containing Halogen


Subclass of Class 75 - Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
Definition: Process in which the solid contains Halogen.
No. of patents: 33
Last issue date: 08/02/2011


NumberTitleIssue Date
7988764Process for producing a grain refining master alloy
A process is provided for producing an aluminium-titanium-boron grain refining master alloy containing titanium boride and titanium aluminide particles, the process comprising melting aluminium in a silicon carbide crucible in a medium frequency induction or an elec...
08/02/2011
7001671Kinetic sprayed electrical contacts on conductive substrates
The present invention is directed to electrical contacts that comprise spaced electrically conductive particles embedded and bonded into the surface of conductors in which the particles have been kinetically sprayed onto the conductors with sufficient energy to form...
02/21/2006
6379418High purity salt aluminum flux
A salt flux composition comprising a high purity salt and additives is used in the recycle of scrap aluminum to increase the recovery of aluminum. The additives include an alkaline agent and a fluoride source....
04/30/2002
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
6228185Metal matrix alloys
The invention provides a process for producing an aluminium-based matrix melt, having boride particles dispersed therein, which is castable, and yet when cast produces a product having a surprisingly good combination of mechanical properties such as stiff...
05/08/2001
6206950Process for recovery of aluminum using high purity salt aluminum flux
A salt flux composition comprising a high purity salt and additives is used in the recycle of scrap aluminum to increase the recovery of aluminum. The additives include an alkaline agent and a fluoride source....
03/27/2001
6053959Method and composition for aluminum recycle using salt flux
A salt flux composition comprising a standard purity salt and additives is used in the recycle of scrap aluminum to increase the recovery of aluminum. The additives include a carbon source, an alkaline agent and a fluoride source....
04/25/2000
5989310Method of forming ceramic particles in-situ in metal
A novel method for producing a ceramic phase particle dispersoid in metal and a novel product composed thereof. The method includes (a) providing a molten composition consisting essentially of molten aluminum alloy containing molten metal selected from th...
11/23/1999
5462581Method for treating molten metal
There is provided an improved method for dispersing a treatment media in a body of molten metal using an impeller to disperse the media in the body of molten metal, the method producing increased shear forces in the body of molten metal and reducing vorte...
10/31/1995
5405427Salt flux for addition to molten metal adapted for removing constituents therefrom and methods of using
Disclosed is an improved flux comprising 32 to 61 wt. % sodium chloride, 2 to 15 wt. % magnesium chloride, 2 to 12 wt. % carbon, the remainder potassium chloride....
04/11/1995
5364450Molten metal treatment
There is provided an improved method for dispersing a treatment media in a body of molten metal using an impeller to disperse the media in the body of molten metal, the method producing increased shear forces in the body of molten metal and reducing vorte...
11/15/1994
5069875Method of adding silicon to aluminum
Disclosed is a method of adding silicon to aluminum. The method is characterized in that silicon particles having a diameter ranging between 2 mm and 50 mm are added to a molten aluminum together with a flux represented by the general formula XaMFb, where...
12/03/1991
5057150Production of aluminum master alloy rod
A continuous process is described for the production of an aluminum master alloy, e.g. an Al-Ti-B grain refining rod, in which molten aluminum is continuously passed through a confined reaction zone. Particulate titanium and/or boron precursor compounds, ...
10/15/1991
5032171Aluminum scrap recovery by inductively moving molten metal
A method for removing dissolved alkali metals and alkaline earth metals from aluminum is disclosed. The method comprises providing a body of molten aluminum containing the alkali metal and alkaline earth metals in a container and inductively moving the mo...
07/16/1991
4959101Process for degassing aluminum melts with sulfur hexafluoride
Aluminum and aluminum alloy melts are purified by removing entrained gaseous impurities and solid particulate impurities, primarily aluminum oxides, by bubbling a non-corrosive intimate mixture of sulfur hexafluoride in an inert gas. Magnesium levels, if ...
09/25/1990
4927459Treatment of aluminum reduction cell linings combined with use in aluminum scrap reclamation
Spent potlinings from aluminum reduction cells are fed to an aluminum reclamation furnace as a partial replacement for or supplement to the molten salt flux used in the reclamation process. This rids the spent potlinings of materials which would leach int...
05/22/1990
4880462Rapidly dissolving additive for molten metal method of making and method of using
The present invention provides a rapidly dissolving additive for molten metal, wherein it contains 2 to 50% by weight of a component A, which consists of an alkali metal aluminium fluoride and/or an alkali metal aluminium fluoride-containing salt mixture,...
11/14/1989
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
4822412Method of removing lithium from aluminum-lithium alloys
The invention is a method of removing lithium from aluminum-lithium alloys. Aluminum-lithium alloys (64) and a metal halide flux (68) are fed into a rotary furnace (10) at a raised and cool end thereof. The temperature at the cool end is above that of the...
04/18/1989
4808222Powdered flux for treating aluminum-silicon alloys
This invention relates to powdered flux compositions and their use in purifying molten mixtures of aluminum and silicon before casting. The powered flux compositions comprise a carbonate, a sodium and hydrogen free fluoride, and amorphous or encapsulated ...
02/28/1989
4790873Removing inclusions from molten metal
The invention provides a method of removing inclusions from molten metal, particularly aluminum, by (a) contacting the molten metal with a medium which retains metal-non-wettable inclusions. The medium may be liquid such as a fused salt mixture; or solid ...
12/13/1988
4769069Process for production of aluminum by carbothermic production of alkaline earth metal aluminide and stripping of aluminum from alkaline earth metal aluminide with halide stripping agent
An improved process is disclosed for carbothermically producing an alkaline earth metal aluminide from an aluminum-bearing material which, in one aspect comprises forming a mixture of a carbonaceous reducing agent and a slag comprising the aluminum-bearin...
09/06/1988
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
4648901Introducing one or more metals into a melt comprising aluminum
An additive is provided which enables metal additions to be made to aluminum melts with good metal recovery and speed of dissolution. The additive includes a mixture comprising: (a) an aluminum-comprising powder, for example commercially pure aluminum; (b) a p...
03/10/1987
4507150Removal of impurities from molten aluminium
Ti and V impurities are removed from molten aluminium by adding a boron-bearing substance and agitating the aluminium in the presence of a dispersed chloride and/or fluoride flux active for fluxing (Ti,V)B2 particles. It is preferred to perform...
03/26/1985
4470846Removal of alkali metals and alkaline earth metals from molten aluminum
A method of removing dissolved contaminant alkali metals and alkaline earth metals from molten aluminum by reaction of the contaminants with solid particulate aluminum-fluoride-yielding material, wherein a body of the molten aluminum to be decontaminated ...
09/11/1984
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
4295884Process for treating a molten metal or alloy using liquid and solid flux
The invention provides a method and apparatus for treating a molten metal or alloy using liquid and solid flux, the invention comprising passing the metal or alloy through a column provided with an outlet syphon lined with solid granules and liquid flux, ...
10/20/1981
4022614Method of refining aluminum-silicon alloys
Molten aluminum-silicon alloys or aluminum base alloys containing substantial amounts of silicon which contain deleterious amounts of titanium are refined by treatment with a fluoride flux less dense than the alloy and having a boiling point above the liq...
05/10/1977
3958979Metallurgical process for purifying aluminum-silicon alloy
A method of processing an impure aluminum base alloy containing a substantial amount of silicon and a deleterious amount of titanium, which includes melting the alloy and stirring the molten alloy with a molten fluoride flux less dense than the alloy and ...
05/25/1976
3935004Addition of alloying constituents to aluminum
Metals are alloyed into aluminum using a solid compact comprised of particles containing a high concentration of the metal to be added. The compacts are prepared by blending finely divided particles of the metal containing material with a salt fluxing age...
01/27/1976
3933476Grain refining of aluminum
Grain refining of aluminum using an addition of titanium, aluminum and KBF4....
01/20/1976
 
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