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Patent Searching and Data


Matches 401 - 450 out of 3,223

Document Document Title
WO/1999/053110A1
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/1999/051784A1
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/1999/050466A1
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/1999/043859A1
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/1999/043615A1
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/1999/034024A1
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/1999/032260A1
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/1999/032673A1
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/1999/029626A1
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/1999/022034A1
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/1999/004046A1
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/1999/001011A1
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/1999/000327A1
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/1998/053969A1
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/1998/053108A1
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/1998/051829A1
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/1998/039490A1
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/1998/037246A1
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/1998/034730A1
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/1998/030499A1
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/1998/027240A1
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/1998/020175A1
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/1998/020174A1
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/1998/020173A1
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/1998/015792A1
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/1998/008990A1
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/1998/007496A1
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/1998/005915A1
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...  
WO/1998/005411A1
A method for regenerating ceramic parts used in aluminium casting, to enable low-cost removal of the surface build-up of materials while conferring properties to said parts that are equivalent to those of new parts. The method is particu...  
WO/1998/004372A1
An apparatus (1) for treating molten aluminium or zinc having a housing providing a chamber (18) for containing a molten metal (19). The chamber (18) includes an inlet opening (20) and an outlet passage (22). A rotatable impeller (12) is...  
WO/1997/047776A1
A dross compression apparatus and method utilizes a dross compression head (14, 84) and a skim box or collector (12, 82) having mating ribs (32, 34, 36 and 38, 42, 44, 46, 48; 102, 104, 106 and 112, 114, 116). The ribs may be any type of...  
WO/1997/041064A1
Processes for improving solids/liquids separation efficiency in the Bayer process are disclosed, wherein Bayer process streams are treated with calcium or magnesium salts, flocculated with carboxylic acid or salt group-containing polymer...  
WO/1997/041269A1
Process for the recovery of aluminium and energy from used packages of the "tetrabrick" type and oven for implementing such process, which comprises a pre-treatment for the recovery of paper, the separation on the one hand of the alumini...  
WO/1997/039155A1
A process and an apparatus are disclosed for improved recovery of metal from dross, wherein a dross treating furnace is provided with a refractory wall or lining with good capacity to store and conduct heat. This furnace is preheated to ...  
WO/1997/028901A1
A method for separating inclusions from an electrically conductive liquid flow using electromagnetic forces, wherein the inclusions and the liquid have differing electrical conductivities, is disclosed. Said flow is exposed to a spatiall...  
WO/1997/026382A1
The dross pot comprises a genarally conical vessel with a plurality of internal upstanding ribs which divide the dross pot into a plurality of segments and also provide a plurality of draining holes for molten metal.  
WO/1997/023309A1
A method and an apparatus which can substantially completely remove paint and pigment on the surface of an empty can of aluminum to reclaim aluminum having a very low impurity content. The method comprises crushing pressed blocks of alum...  
WO/1997/018456A1
A method of charaterising molten materials comprising the steps of effecting flow of the material through means for filtering out inclusions within the material, monitoring the flow of the molten material through the filtering means, and...  
WO/1997/017476A1
Adding small pieces of light metal scrap, for example light metal chips, to a light metal molten mass represented until now a big technical problem. It has been surprisingly discovered that a process known in iron metallurgy and used unt...  
WO/1997/016576A1
A thermo-mechanical process for producing aluminium or other metals from aluminium or metal compounds, is described, whereby aluminium oxide or similar aluminium compounds or similar other metal compounds, are heated by friction generate...  
WO/1997/006876A1
The invention concerns a process for purifying waste gases from smelting, resmelting or combustion plant furnaces and the use of the filter dusts produced. The invention is used in particular in the production or preparation of nonferrou...  
WO/1997/006394A1
A metal fusion furnace capable of controlling speeds, at which a metallic material is charged from a preheating section to a fusing section, within an optimum range, and efficiently fusing the metallic material only with oxygen burners, ...  
WO/1996/039545A1
A method of and apparatus for treating molten metal to achieve effective removal of such unwanted inclusions as gases, alkali metals, entrained solids, and the like. The method comprises continuously introducing molten metal into a conta...  
WO/1996/038220A1
A process of selectively separating a target metal contained in an aqueous solution by contacting the aqueous solution containing a target metal with an aqueous solution including a water-soluble polymer capable of binding with the targe...  
WO/1996/032516A1
Residues which arise from industrial processes and the burning of rubbish and contain heavy metals and/or heavy metal compunds are subjected to a two-stage reduction process providing re-usable metal and silicon-containing alloys. In a f...  
WO/1996/032515A1
An incremental rotational system for an aluminium dross processing head includes lever means actuated by the head as it rises to rotate the head by a defined amount, no independent drive system being required.  
WO/1996/032513A1
A cooling system for an aluminium dross press head comprises air inlet means allowing air to be drawn into the press head and a hollow actuating rod connected to the press head which extracts air from the press head.  
WO/1996/032514A1
A dross press is enclosed within a cabinet which is normally maintained at a negative pressure relative to ambient air pressure. The cabinet is provided with locked doors to prevent egress of explosive gases or pieces of metal is equippe...  
WO/1996/030143A1
A method and an apparatus for dispersing a first fluid into a second fluid are described. Upper vessel (2) and lower vessel (3) for the second fluid are in fluid communication via a conduit (4). The conduit (4) has a constricted outlet (...  
WO/1996/030549A1
Method and apparatus for recovering free aluminum from a metal bearing dross containing free aluminum metal and oxides of the metal. Hot dross (14) is collected from a hot dross source (10) into a vessel (12), and the vessel (12) is plac...  

Matches 401 - 450 out of 3,223