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Patent Searching and Data


Matches 301 - 350 out of 1,550

Document Document Title
WO/2000/040767
A process for producing aluminum metal by carbothermic reduction of alumina ore. Alumina ore is heated in the presence of carbon at an elevated temperature to produce an aluminum metal body contaminated with about 10-30 % by wt. aluminum...  
WO/2000/040768
The invention concerns a method for purifying aluminium by segregation to form a solid mass or bloom with high purity (namely higher than 3N5, i.e. containing more than 99.95 % aluminium), from an impure aluminium mass called mother liqu...  
WO/2000/037692
The invention concerns a method for filtering a metal liquid by passing said metal liquid on a bed of refractory particulate material characterised in that the particulate material, generally based on electrically melted corundum has an ...  
WO/2000/037691
Method for the production of primary aluminium from alumina comprising the step of converting alumina into aluminiumsulfide (Al¿2?S¿3?) and subsequently the separation of aluminium from aluminiumsulfide wherein the conversion of alumin...  
WO/2000/035809
The invention relates to a method for producing molten salts and their mixtures, using an extruder. The starting materials are melted and reacted and the products of the reaction are then guided via a column with alkali salt.  
WO/2000/031482
An apparatus (14) for separating molten Aluminium from a mixture of molten aluminium and aluminium dross includes a table (16, 54) for supporting an insulated crucible (59, 75) containing the mixture of aluminium and aluminium dross. Ele...  
WO/2000/028219
An apparatus for moving a stream of molten metal comprising a pumping member, a housing (3) at least partially enclosing the pumping member, a power device seated on a support (22), a shaft connecting the power device and the pumping mem...  
WO/2000/025078
A furnace for melting and retaining aluminum ingots, comprising an aluminum ingot preheating tower, a melting crucible furnace for receiving aluminum ingots supplied from the preheating tower while being disposed directly below the prehe...  
WO/2000/022179
The invention relates to a system of conduits for the introduction of gaseous reactive substances into a molten bath, preferably an aluminium molten bath. The gases are used as reactive partners for solutes that are discharged in the for...  
WO/2000/020651
A device for removing dross from the surface of the molten metal and for extracting usable elemental metal from the dross. The device comprises a container in which the dross is collected, a means for lifting the container out of the mol...  
WO/2000/018685
A process is disclosed for the treatment of an alumina process feedstock prior to transferring the treated feedstock to an alumina process for extracting refined alumina from the treated feedstock. The treatment process includes: (a) hea...  
WO/2000/018974
A flux for molten aluminum and aluminum alloy, containing 1 to 100% by weight of at least one member selected from among particulate vegetable organic materials and carbides thereof, the particles having a water content of at most 15% by...  
WO/2000/017127
A ceramic product, particularly one for handling molten aluminium, which contains at least 70 % lithium aluminium silicate on a mass per mass basis is disclosed as well as a method of improving the non-wettability of the product.  
WO/2000/010919
A process is disclosed for the treatment of an alumina process feedstock prior to transferring the treated feedstock to an alumina process for extracting refined alumina from the treated feedstock. The treatment process includes the foll...  
WO/2000/009770
Process and apparatus for recovering metal material from waste material including organic material, such as plastic, and metal material in the form of thin foil material. The process includes following steps: (a) introducing the waste ma...  
WO/2000/009771
Process and apparatus for recycling of liquid carton waste material or other similar waste material which includes fibrous material, metal and plastic material. The process including following steps: (a) introducing the waste material an...  
WO/2000/003045
The invention concerns a device for in-line filtering (10) of a liquid metal for obtaining a very good filtering of any liquid metal whatever its melting point using only a single installation, comprising a treating chamber (11) made of ...  
WO/2000/003046
A process for melting an aluminum charge into molten aluminum and simultaneously refining the molten aluminum to produce a refined molten aluminum having a low hydrogen content in a direct fired furnace (10) is provided.  
WO/2000/000654
The invention relates to a method for making an aluminium alloy melt containing at least 2.5 wt. % magnesium less susceptible to scratching. According to said method, 0.02 to 0.15 wt. % vanadium and less than 60 ppm beryllium is added to...  
WO/1999/064638
A method for removing a substance (X) from a solid metal or semi-metal compound (M?1¿X) by electrolysis in a melt of M?2¿Y, comprises conducting the electrolysis under conditions such that reaction of X rather than M?2¿ deposition occ...  
WO/1999/060177
The invention relates to a method for continuous separation of impurities and alloyings from liquid metal baths, e.g. iron-aluminum alloys, zinc oxides or mixed crystals from zinc baths, wherein liquid metal is extracted from the area cl...  
WO/1999/053109
The charge well (22) of a metal melting furnace (10) is provided with an internal cavity (22IC) having a circular cross section with a peripheral exit port (2HE) located tangentially with respect to said cavity (22IC) at a lower level th...  
WO/1999/053110
A method of manufacturing aluminum alloy for automobile members, comprising adding aluminum alloy flattening material scrap or metal to aluminum alloy cast scrap, melting the resulting mixture to dilute impurities and, as required, regul...  
WO/1999/051784
Refractory lined metal melting furnace (10) for the melting and holding a plurality of molten metals or alloys of different composition comprises a melting chamber (11), a plurality of passages (26, 26') communicating with the melting ch...  
WO/1999/050466
A metal scrap melting submergence device for a chargewell of a melting furnace comprises an open top chamber (116) including walls of a heat resistant material, an inlet (126) positioned in a side wall of the chamber, an outlet (124) pos...  
WO/1999/043859
A continuous process for the production of aluminium metal from feed materials comprising aluminium oxide and a reduction gas such as a light hydrocarbon gas, where the aluminium oxide and gas react at a temperature of about 1500 °C or ...  
WO/1999/043615
A process for recovering one of alumina hydrate, magnesium hydroxide and magnesium aluminate spinel (MgAl�2?O�4?) from aluminum dross wherein the dross is processed to a non-metallic product (NMP). The dross may contain fluxing salts...  
WO/1999/034024
An injector (10) for injecting gas into a molten metal. The injector (10) has a rotor (11) that is rotatable about an axis of rotation, the rotor (11) having a cylindrical projection-free side surface (14), a bottom surface (21), and a c...  
WO/1999/032673
The invention relates to a process for treating a raw material containing aluminium or a similar metal melting at a low temperature and organic matter, including metal separation. The invention is particularly intended for the treatment ...  
WO/1999/032260
A metallic coating layer is removed at least partly from scrap metal pieces having a core and the coating layer on the core. The coating layer has a lower melting temperature than the core. The scrap metal pieces are agitated in a contai...  
WO/1999/029626
The present invention relates to a method for reducing scale in the Bayer process comprising: (a) digesting an aluminous ore in a caustic liquor to extract alumina values; (b) feeding the liquor to a settler tank to clarify the liquor by...  
WO/1999/022034
There is provided a method and apparatus for removing liquid salts from liquid metal utilizing at least one porous substrate (18) which is wettable by liquid salts and is not wettable by liquid metal. The porous substrate (18) is inserte...  
WO/1999/004046
The invention concerns an inert tank for treating an oxidable liquid metal (3), comprising a metal tank body and lid internally protected with an inert refractory lining (1, 13), said tank body comprising a plurality of inlets and outlet...  
WO/1999/000327
A process for preparing calcium aluminate from aluminum dross comprising crushing (10) the dross and extracting solubles therefrom with water in a digester (14). The brine so obtained is processed in a crystallizer (32) to obtain fluxing...  
WO/1999/001011
Electric heating elements (14) and heaters suitable for use in molten metals such as molten aluminum are provided. An improved electric heater assembly (10) suitable for heating molten metal is disclosed. The electric heater assembly (10...  
WO/1998/053969
A method for processing material comprising combinations of aluminium and plastic, such as aluminium bottle caps having a plastic coating, comprising the steps of: pyrolysing the plastic in an inert atmosphere, cracking or gasyfying the ...  
WO/1998/053108
This invention concerns a process for the recovery of metal from waste of metal polluted by organic material, such as aluminium bearing beverage and food containers, whereby the waste is heated to a temperature which is below the melting...  
WO/1998/051829
Aluminum scrap containing a carbon-containing coating is cleaned with about 212 �F (100 �C) hot water, and then decarbonized with about 1000 �F (538 �C) superheated steam which produces a carbon-containing volatile from the carbo...  
WO/1998/039490
A filter cartridge for a molten metal filtering system is provided with a modular construction in which the filter elements are adapted to be removably mounted to an end plate. The filter elements may be removed separately from the filte...  
WO/1998/037246
A process is described for removing organic materials from the surfaces of metallic articles, e.g. scrap metal such as aluminum scrap, in which the metallic articles are fed into a heated fluidized bed of particles being fluidized by an ...  
WO/1998/034730
A method for recovering aluminum metal from varied size clumps of salt cake. The salt cake clumps have varied concentrations of aluminum metal. The method includes steps of segregating (14) the varied size clumps into smaller clumps and ...  
WO/1998/030499
The method of the present invention detoxifies spent aluminum potliners to remove hazardous cyanides, fluorides, and polynuclear aromatics by reacting crushed potliners with a CaC1�2?/HC1 leach mill solution in the presence of iron. Th...  
WO/1998/027240
In order to separate metals and/or metal alloys of different melting points from one another, a mixture of these metals and/or metal alloys is brought to a temperature at which the metal or the metal alloy of relatively low melting point...  
WO/1998/020173
An inert gas bubble-actuated molten metal pump (PU) is located in a metal-melting furnace (10) to effect circulation of molten metal throughout the furnace (10). The inert gas employed to actuate the molten metal pump (PU) is captured be...  
WO/1998/020174
An inert gas bubble-actuated molten metal pump (PU) is located between one section of a metal-melting furnace (10) and a second section to pump molten metal from the one section, wherein the molten metal is at a higher temperature, into ...  
WO/1998/020175
A dross press including a press head and a skim box and including a head system comprising pressing means for pressing the dross in said skim box, said press means including means for providing a rocking movement for said press head. Sai...  
WO/1998/015792
Melting apparatus for melting a metal, such as aluminium, comprising a melting chamber, a burner chamber and a passage which extends between the melting chamber and the burner chamber and which has an inlet opening on the melting-chamber...  
WO/1998/008990
A rotor coupling (1) for connecting a graphite rotor (37) to a drive shaft (12) of a rotary degassing machine comprises a cap (2) which fits over an end of the rotor and contains gripping means (3, 4) to retain the rotor in the cap. The ...  
WO/1998/007496
A reticulated ceramic filter for molten metal has an inlet portion with an inlet surface, an intermediate body portion contiguous with the inlet portion and an outlet portion with an outlet surface. The inlet surface is non-planar with u...  
WO/1998/005915
A rotary gas dispersion device for use in a liquid aluminium treatment vessel is disclosed. The device is useful for reducing surface disturbance, splashing and vortices while maintaining the effectiveness of the treatment. Said device i...  

Matches 301 - 350 out of 1,550