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WO/2003/106080A1 |
An article (20) of a base metal alloyed with an alloying element is prepared by mixing a chemically reducible nonmetallic base-metal precursor compound of a base metal and a chemically reducible nonmetallic alloying-element precursor com...
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WO/2003/096767A1 |
A method and apparatus for generating plasma in a fluid. The fluid (3) is placed in a bath (2) having a pair of spaced electrodes (4, 6) forming a cathode and an anode. A stream of bubbles is introduced or generated within the fluid adja...
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WO/2003/080874A1 |
A method and an apparatus (50) for producing direct reduced iron (37) from dry pellets (25) composed of iron oxide and carbonaceous material. A mixture of pellets (25) and free coke particles (38) with weight relation from 3:1 to 5:1 is ...
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WO/2003/076690A1 |
A method of reducing a metal oxide, such as titania in a solid state in an electrolytic cell is disclosed. The electrolytic cell includes an anode, a cathode, and a molten electrolyte. The electrolyte includes cations of a metal that is ...
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WO/2003/068435A1 |
This invention discloses a process for preparing tantalum powder and&sol or niobium powder having high specific surface area. The process is carried out by reducing the oxides of tantalum and&sol or niobium, in which at least one halide ...
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WO/2003/066914A1 |
A high−purity spongy titanium material containing less amounts of oxygen and metal elements is economically produced. The vacuum separation time t in a vacuum separation step is t = tO &plus 15 to &plus 35 hour where tO is the time fro...
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WO/2003/062480A1 |
The invention relates to a method for production of metals or metal alloys of high purity, in particular metallic chrome, whereby metallic elements are treated under pre-determined conditions of temperature and pressure. Said elements co...
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WO/2003/062479A1 |
The invention relates to a method for production of metal or metal-alloy elements of high purity, in particular chromes, characterised in comprising the following method steps: production of a metal or a metal alloy with non-metallic inc...
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WO/2003/056039A1 |
An apparatus and method for recovering Zn component contained in dust and sludge by vaporization and Fe component in the form of molten iron by reduction to reduce cost of sludge treatment and to prevent environmental pollution. A plural...
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WO2002061168B1 |
The invention encompasses methods of forming titanium-based mixed-metal materials and zirconium-based mixed-metal materials utilizing one or more of a reduction process, electrolysis process and iodide process. The invention also encompa...
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WO/2003/048399A2 |
A solid material (M1X) (6) comprising a solid solution of a non-metal species (X) in a metal or semi-metal (M1) or a compound between the non-metal species and the metal or semi-metal is immersed in a molten salt (M2Y) (4). A cathodic po...
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WO/2003/046233A1 |
1. A process for the recovery of a metallic nickel product in a solvent extraction process including the steps of:(a) forming a nickel ammine complex by stripping nickel from a nickel loaded organic phase with a high strength ammonia sol...
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WO/2003/038156A1 |
A method for smelting a titanium metal (Ti) wherein titanium oxide (TiO2) is subjected to thermal reduction to produce a titanium metal, characterized in that it comprises charging a mixed salt of calcium chloride (CaCl2) and calcium oxi...
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WO/2003/031665A2 |
A preform (28) is slip-cast or pressed from a metal compound or a mixture of metal compounds, sintered in air, vacum, or inert gas, and is electrolytically reduced in a bath (20) of molten salt to form a porous metal or alloy product. Th...
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WO/2003/031334A2 |
A process for separating and recovering a desired metal as metal oxide from raw material is provided. The process includes placing the raw material and a reductant in a container to form a reducing microclimate within the container. A ho...
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WO/2003/020989A1 |
An improved method and apparatus for recovering metal values from Electric Arc Furnace (EAF) dust, particularly zinc and iron values, by mixing EAF dust and carbonaceous fines to form a particulate mixture; heating the mixture at a suffi...
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WO/2003/008652A1 |
A method of manufacturing metal iron capable of increasing the operation rate and maintainability of a hearth and being adapted to a long term continuous operation by allowing metal iron powder to be easily removed and the surface of the...
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WO/2003/002785A1 |
A method of reducing a titanium oxide in a solid state in an electrolytic cell which includes an anode, a cathode formed at least in part from the titanium oxide, and a molten electrolyte which includes cations of a metal that is capable...
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WO/2002/102533A1 |
A method for producing a metal powder, which comprises contacting a metal chloride gas with a reducing gas, to give a metal powder, and washing the metal powder with aqueous solution of carbonic acid, and preferably subjecting the washed...
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WO/2002/103064A1 |
A method for producing a granular metal wherein a raw material composed of a material containing a metal oxide and a carbonaceous reducing agent is heated to reduce the metal oxide in the raw material, and the formed metal is further mol...
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WO/2002/101309A1 |
The continuous thermal extraction melting unit is composed by a charging hopper (1) that is equipped of system of hydraulic closing (2). The native mineral, through the duct (3), reaches the cochlea of feeding (4) so to be fed in the dis...
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WO/2002/101102A1 |
The invention relates to a method of recycling metallic coated scrap pieces of which the liquidus temperature of the coating layer is lower than the solidus temperature of the core layer, such as brazing sheet scrap pieces, or metallic c...
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WO/2002/095078A1 |
The present invention relates to a process for carbothermic production of aluminum where a molten bath comprising aluminum carbide and aluminum oxide is produced in a low temperature compartment (20), and continuously flows into a high t...
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WO/2002/095079A1 |
A method for aluminum recovery during the carbothermic production of aluminum in a smelting furnace (1, 2) is disclosed, where during carbothermic reduction of alumina, aluminum and aluminum suboxide vapors are produced (3, 4), which are...
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WO/2002/090606A1 |
The inventive reduction method for recovering rare-earth metals from fluorides thereof used for producing alloys consists in blending a batch, transporting and loading the prepared batch into a reaction crucible, initiating a metallother...
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WO/2002/090604A2 |
The invention relates to a device and method for utilizing waste products, which contain hydrocarbons and iron oxide, particularly mill scale sludges and coal fines in an iron and steel works. According to the invention, the waste produc...
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WO/2002/079529A1 |
A method for the direct preparation of metal from metal-containing material comprising providing metal-containing material and a reducing agent, mixing the metal-containing material with the reducing agent to form a mixture charging the ...
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WO/2002/079521A1 |
The invention relates to a recovery method consisting in subjecting the residues (said residues having been previously mixed with carbon and a fluxing agent and agglomerated) to an initial treatment involving distillation with partially ...
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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/2002/075000A2 |
A modular apparatus for the production of molten metal by self reduction of agglomerates of metal oxide or of prereduced metal, which may be iron. The apparatus is typically a shaft furnace of modular construction and includes a pluralit...
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WO/2002/075002A1 |
An energy efficient, coal-based method and apparatus, a reactor (10) that are environmentally friendly which produce under pressure metallized/carbon product and molten metal directly from abundant coal or other carbonaceous material, an...
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WO/2002/055746A1 |
The invention relates to an apparatus for feeding finely divided solids, containing at least sulphidic metal concentrate, and oxygenous oxidizing gas into a suspension smelting furnace, said apparatus comprising elements for conducting s...
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WO/2002/046482A1 |
In a process for the reduction of a metalliferous ore or concentrate the ore or concentrate is first prepared into a particulate form. A reaction chamber (3, 103, 203, 301, 401, 503, 603, 702) is then charged with ore or concentrate, a r...
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WO/2002/042513A2 |
Sputtering targets and methods of making sputtering targets are described. The method includes the steps of: providing a sputtering metal workpiece made of a valve metal; transverse cold-rolling the sputtering metal workpiece to obtain a...
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WO/2002/040748A1 |
A method for the production of an intermetallic compound (M?1¿Z) involves treating a solid precursor material comprising three or more species, including first and second metal or metalloid species (M?1¿, Z) and a non-metal species (X)...
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WO/2002/040725A2 |
A precursor powder comprising a metal compound is formed into a sample for electro-deoxidation, for example by slip-casting. The sample is then immersed in a melt comprising a molten salt and a cathodic potential applied to remove non-me...
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WO/2002/038815A1 |
A method of operating a rotary hearth type reducing furnace, characterized in that a combustion gas generated in the furnace is held in a state, wherein the temperature of the gas is 800 ° C or higher, the concentration of carbon monoxi...
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WO/2002/036834A2 |
According to a method for utilising solid, optionally with the addition of iron ore, the recyclings are introduced into a melting cyclone (6), together with a reduction agent containing carbon, and oxygen, swirled and ignited. The recycl...
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WO/2002/036836A1 |
A method and facilities for producing green pellets from a powdery raw material and reducing the green pellet in a rotary hearth type reducing furnace, which comprises kneading a raw material of a fine powder (including particles having ...
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WO/2002/020857A1 |
A method for producing a silver having high purity from a raw material of low grade, characterized in that it comprises dissolving the raw material with a nitric acid solution, adding hydrochloric acid to the resulting mixture to give si...
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WO/2002/020403A1 |
The invention relates to a method for producing tungsten and/or molybdenum metal powder or carbide by reducing and optionally carburizing tungsten and/or molybdenum oxide powder in the presence of alkali metal compounds. At least two alk...
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WO/2002/016660A1 |
The present invention provides a method of reducing a substrate in an aqueous medium in the presence of a pre-prepared catalyst. The method comprises the steps of contacting the substrate in the aqueous medium with the pre-prepared catal...
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WO/2002/012570A2 |
When a mixture containing an iron oxide source and carbonaceous reducing agents is heated and reduced to manufacture metallic iron, carburizing and melting of solid metallic iron produced by heating and reducing are progressed efficientl...
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WO/2002/000944A1 |
The invention relates to a method for directly reducing particulate oxide-containing ores, especially iron-oxide containing material, by way of a fluidized bed method, at a pressure of > 5 bar. According to the inventive method, the ore ...
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WO/2002/000945A1 |
The invention relates to a method for the indirect reduction of particulate oxide-containing ores, especially iron oxide containing material, in a fluidized bed method at a pressure < 5 bar. According to the inventive method, the ore is ...
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WO/2002/000943A1 |
The invention relates to a method for directly reducing, by way of a fluidized bed method, ore fine that comprises at least one ore component from the group of the magnetite, hydrated, carbonate or sulfide ores. The ore fine is heated in...
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WO/2001/098547A2 |
A method of processing flue dust that contains one or more compounds from a first group of zinc, lead and cadmium compounds, and contains iron compounds, involves heating the flue dust to cause a substantial portion of one or more of the...
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WO/2001/096620A2 |
High purity niobium metals and alloys containing the same are described. The niobium metal preferably has a purity of at least 99.99 % and more preferably at least 99.999 %. In addition, niobium metal and alloys thereof are described, wh...
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WO/2001/089747A1 |
In a method for extracting an alloy powder for a rare earth magnet wherein a reduction product containing a rare earth alloy obtained by the reduction diffusing method is washed by introducing the reduction product into a washing water a...
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WO2001062996A9 |
A method of removing oxygen from a solid metal, metal compound or semi-metal M1O by electrolysis in a fused salt of M2Y or a mixture of salts, which comprises conducting electrolysis under conditions such that reaction of oxygen rather t...
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