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WO/2000/022179A1 |
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...
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WO/2000/020651A1 |
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...
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WO/2000/018685A1 |
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...
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WO/2000/018974A1 |
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...
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WO/2000/017127A1 |
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.
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WO/2000/010919A1 |
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...
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WO/2000/009770A1 |
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...
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WO/2000/009771A1 |
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...
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WO/2000/003045A1 |
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 ...
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WO/2000/003046A1 |
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.
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WO/2000/000654A1 |
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...
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WO/1999/064638A1 |
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...
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WO/1999/060177A1 |
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...
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WO1999043615A9 |
A process for recovering one of alumina hydrate, magnesium hydroxide and magnesium aluminate spinel (MgAl2O4) from aluminum dross wherein the dross is processed to a non-metallic product (NMP). The dross may contain fluxing salts which a...
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WO/1999/053109A1 |
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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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 ...
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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 ...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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.
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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...
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