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WO/2002/088400A1 |
An oxygen fueled combustion system includes a furnace (14) having at least one burner, an oxygen supply for supplying oxygen having a predetermined purity, and a carbon based fuel supply for supplying a carbon based fuel. The oxygen and ...
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WO/2002/076648A1 |
Application of a marking agent to metal stock, such as aluminum sheet, during and as a part of procedures for preparing the sheet for subsequent, scrap-generating manufacturing operations, to provide a detectable mark on pieces of manufa...
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WO/2002/075001A2 |
A method for reducing metal oxides in a shaft furnace. A charge of metal oxide, e.g. iron ore or agglomerates, and a reductant is reacted in the furnace to produce a primary metal of the metal oxide and an additional secondary metal such...
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WO/2002/058863A1 |
A bottom heated holder furnace (10) for containing a supply of molten metal includes a storage vessel (20) having sidewalls (22) and a bottom wall (24) defining a molten metal receiving chamber (26). A furnace insulating layer (32) lines...
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WO/2002/058864A1 |
A bottom heated holder furnace (12) for containing a supply of molten metal includes a storage vessel (30) having sidewalls (32) and a bottom wall (34) defining a molten metal receiving chamber (36). A furnace insulating layer (42) lines...
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WO/2002/058862A2 |
The melter furnace includes a heating chamber (16), a pump chamber (18), a degassing chamber (20), and a filter chamber (22). The pump chamber 818) is located adjacent the heating chamber (16) and houses a molten metal pump (30). The deg...
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WO/2002/057502A2 |
A process is described for treating molten metal with a particulate treating agent. A melt of a metal, e.g. aluminum, is provided in a treatment vessel such as a ladle and a mixing impeller is positioned substantially below the surface o...
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WO/2002/036493A1 |
A method of separating a red mud containing goethite which comprises: treating an alumina-containing ore containing an iron ingredient as goethite with an alkali solution with heating at 110 to 160°C to extract the alumina; subsequently...
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WO/2002/033137A1 |
The invention concerns a rotary injector for injecting gas (2) in a liquid metal (3), said injector comprising a drive shaft, stirring means, gas circulating means, gas (2) emitting means (8, 9). Said injector is characterised in that th...
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WO/2002/022900A2 |
An apparatus is provided for the treatment of molten metal, e.g. aluminum, with a particulate treatment agent and a gas. This includes a vessel for holding molten metal, a rotary device for breaking up particulate treatment agent and gas...
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WO/2002/020859A2 |
The invention relates to a method for the salt-free, non-oxidizing remelting of aluminum, the alloys thereof and aluminum scrap metals comprising possible impurities, such as inflammable oily substances, adhering inflammable or non-flamm...
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WO/2002/020860A1 |
A method for processing molten aluminum and a shaft (4) for use in the method for treating molten aluminum using an impeller (6) mounted on the shaft (4) comprising a protective refractory sleeve (7) resistant to attack by molten aluminu...
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WO/2001/083836A2 |
This invention relates to a method for preventing the ignition of molten magnesium by contacting the molten magnesium with a gaseous mixture comprising a fluorocarbon selected from the group consisting of perfluoroketones, hydrofluoroket...
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WO/2001/079569A1 |
Methods for reducing inclusion content of sputter targets and targets so produced are disclosed. Inclusions (93) may be reduced by adding a small amount of Si to the molten A1 or molten A1 alloy followed by filtering of the molten metals...
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WO/2001/077396A1 |
A process for continuous vacuum purification of a molten metal, which comprises agitating a molten metal (1) in a melt agitation portion (B) in a vacuum treatment chamber having a reduced pressure and being preheated, to thereby vaporize...
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WO/2001/073142A1 |
A method for the agglomeration of alumina particles, the method comprising the steps of: grinding the alumina particles to a D�50? of less than about 12 $g(m)m; adding a quantity of a binding agent; andspray drying the mixture so forme...
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WO/2001/073143A1 |
A method for the agglomeration of alumina particles, the method comprising the steps of: adding a quantity of pseudo-boehmite to the alumina particles; and spray drying the mixture so formed to produce agglomerated granules.
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WO/2001/053547A1 |
The invention relates to a method for separating a fraction containing NE metals into the respective NE metals. Said fraction containing NE metals is treated with at least one solution of one or more inorganic and/or organic reagents so ...
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WO/2001/051676A2 |
The invention relates to a method for obtaining material from slag, whereby said material is obtained from slag which is still in liquid form. The invention also relates to a device for obtaining material from slag, which is provided wit...
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WO/2001/049796A1 |
A chemical delacquering composition, process and system for delacquering substrates such as aluminum scrap in which an aqueous solution containing at least one short-chain organic acid, preferably a mixture of two short-chain organic aci...
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WO/2001/042531A1 |
A component is made of or coated with a refractory material for use at high temperature, e.g. in an aluminium production cell, an arc furnace or an apparatus for treating molten metal. The refractory material comprises particles of a ref...
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WO1998039490A9 |
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...
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WO/2001/042168A1 |
An aluminium-wettable protective coating on a substrate, for use at elevated temperature in an oxidising and/or corrosive gaseous and/or molten environment is disclosed. The coating (20A, 20B, 20C, 20D) is applied to protect the substrat...
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WO/2001/036695A1 |
The invention relates to a metallurgy of light alloys in particular to methods for ultrasonic treatment of melts in a production of shaped castings from hypereutectic silumins of a piston group. The method consists of a degasification an...
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WO/2001/036694A1 |
Application of a marking agent to metal stock, such as aluminum sheet, during and as a part of procedures for preparing the sheet for subsequent, scrap-generating manufacturing operations, to provide a detectable mark on pieces of manufa...
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WO/2001/014605A1 |
The briquette is formed from a mixture containing, by weight, 85-98 % slag from secondary aluminium processing, 1 to 8 % polyvinyl acetate dispersion as the polymeric bonding agent and the remainder water; the briquette contains water in...
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WO/2001/012544A1 |
A method for producing fumed silica and a fluorine-containing product from a source of silica in solid form and a solid material containing fluorine, the solid material selected from the group consisting of sodium aluminum tetrafluoride,...
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WO/2001/010584A1 |
A distributor device for use in aluminium casting includes a rigid, substantially bowl-shaped receptacle (2) of a refractory material having a base member (4) and a peripheral wall (6) that extends upwards from the base. The receptacle h...
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WO/2001/006023A1 |
A method and system are provided for preventing oxidation of an easily oxidizable, molten metal having a surface exposed to an oxygen-containing atmosphere. The method comprises placing a quantity of a solid metal fluoroborate salt (12) ...
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WO/2000/073240A1 |
According to the invention, gassing agitators (impellers) for purifying molten metal masses are made from a silicon nitride material.
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WO/2000/073522A1 |
An aluminium alloy sheet suitable for use as lithographic plate support, wherein the aluminium alloy has the composition (in wt%): Si 0.05-0.20 preferably 0.06-0.14; Fe 0.15-0.40 preferably at least 0.2; others up to 0.05 each and up to ...
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WO/2000/065110A1 |
The invention relates to a method for removing impurities from molten masses of metals or alloys, especially aluminum and magnesium, whereby a salt mixture is added to the molten masses of the metal or alloy, which is obtained by melting...
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WO/2000/064809A1 |
Spent potliner from an aluminum reduction cell is subjected to an acid digest (24) and the digest may be adjusted to produce a first gas component comprised of at least one material selected from silicon tetrafluoride, hydrogen fluoride,...
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WO/2000/065109A1 |
A device for injecting gas bubbles into a liquid metal (3, 23) contained in a treatment volume, preferably a treatment vessel, a circulation chute for liquid metal or an oven. The inventive device comprises at least one static inert-mate...
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WO/2000/063630A1 |
An apparatus for treating, in particular purifying or degassing, molten metal (40), comprising a component (10) exposable to molten metal to be treated and means (13) for imparting a rotary motion to the molten metal (40) about a substan...
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WO/2000/058528A1 |
A process of treating spent potliner material from aluminum reduction cells and recovering useful products. In the process of the present invention, spent potliner material is introduced into an acid digester containing, for example, sul...
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WO/2000/057139A1 |
A method of determining an inlet flow rate (F¿inlet?) of a flowable material including passing an inlet stream of flowable material through a chamber (20) having an outlet aperture (100); measuring a first rate of change of quantity of ...
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WO/2000/057193A2 |
A method of determining an inlet flow rate (F¿inlet?) of a flowable material is disclosed. The method includes: passing an inlet stream of flowable material through a chamber having an outlet aperture to one end thereof; measuring a fir...
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WO/2000/048770A1 |
The invention relates to a crucible induction furnace for producing cast parts consisting of aluminium and magnesium alloys, especially particle-reinforced alloys. According to the invention, the material being melted is directly, induct...
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WO/2000/047783A1 |
Shaped aluminium bodies for use as an agent (such as a deoxidant) in steelmaking processes are produced by compressive forming using specific forming materials (including aluminium materials) and/or specific forming techniques to ensure ...
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WO/2000/044948A1 |
A method of melting metal scrap in a molten melting media, the method comprising (a) providing a source of molten melting media in a furnace (2), the melting media in the furnace (2) having a first surface level; (b) providing a first me...
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WO/2000/040768A1 |
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...
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WO/2000/040767A1 |
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...
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WO/2000/037691A1 |
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...
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WO/2000/037692A1 |
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 ...
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WO/2000/035809A1 |
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.
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WO/2000/031482A1 |
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...
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WO/2000/028219A1 |
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...
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WO/2000/025078A1 |
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...
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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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