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WO/2000/006328A1 |
A process for manufacturing of metal powder from a halogen containing chemical compound of the metal. The process involves thermal treatment of the compound (A) within a closed reactor and in a non-oxidizing atmosphere so as to induce de...
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WO/2000/005424A1 |
The invention relates to a method for producing zinc using the IS process in an IS shaft furnace and to an IS shaft furnace for carrying out said method. To be able to utilize dust containing zinc in a simple manner the invention provide...
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WO/2000/004197A1 |
Apparatus for a metal reduction and melting process is disclosed, in which a metal and carbon containing burden (15) is heated in an induction furnace (10) comprising a heating vessel (11) in which the burden (15) can float in at least o...
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WO/2000/001856A1 |
Method and apparatus for the reduction into metallic iron of iron-oxide-containing particles of a broad range of sizes. Particles (2), typically 0.1-50 nm in size, are reduced by contact with a hot reducing gas (12), preferably from a ho...
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WO/2000/001855A1 |
A direct smelting process for producing metals from a metalliferous feed material is disclosed. The process includes forming a molten bath having a metal layer (15) and a slag layer (16) on the metal layer in a metallurgical vessel, inje...
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WO/2000/001854A1 |
A vessel which produces metal from a metalliferous feed material by a direct smelting process is disclosed. The vessel contains a molten bath having a metal layer (15) and a slag layer (16) on the metal layer and has a gas continuous spa...
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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/1999/061670A1 |
Described is a method for producing high purity tantalum, the high purity tantalum so produced and sputtering targets of high purity tantalum. The method involves purifying starting materials followed by subsequent refining into high pur...
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WO/1999/061672A1 |
An alloy comprising tantalum and silicon is described. The tantalum is the predominant metal present. The alloy also has a uniformity of tensile strength when formed into a wire, such that the maximum population standard deviation of ten...
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WO/1999/059755A1 |
The invention relates to a method for producing metal and alloy powders containing at least one of the metals iron, copper, tin, cobalt or nickel. According to the method an aqueous solutions of metal salts is mixed with an aqueous carbo...
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WO/1999/059754A1 |
A process for the production of ultrafine powders consisting of individual particles with sizes in the range of 1 nm to 200 nm, which is based on the mechanical milling of two or more non-reacting powders. The process includes subjecting...
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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/1999/032666A1 |
A two step twin-single fluidized bed type reduction apparatus for fine iron ore, and a method therefor, are disclosed. The fluidizing of the fine iron ore is stabilized so as to improve the reduction degree and the gas utilization rate, ...
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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/1999/028511A1 |
A method for reforming reducing gas in a fluidized bed process for reduction of ore in a series of ore reducing reactors, including the steps of: passing ore through a plurality of reducing reactors (10, 12) including a final reactor (10...
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WO/1999/025884A1 |
The invention relates to a method for heat-treating fine-grained materials which tend to agglomerate at high temperatures and which have an average grain size of preferably 0 to 1000 $g(m)m within temperature ranges around and above the ...
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WO/1999/016911A1 |
The HIsmelt process as disclosed in WO 96/31627 A1 (PCT/AU96/00197) consists of forming a molten bath of iron and slag, injecting metalliferous feed (oxides), solid carbonaceous material (coal and/or coke) and slag formers into the bath ...
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WO/1999/015705A1 |
The invention relates to a hard material alloy produced by a melting process and based on titanium carbide with carbides, nitrides, and/or borides of sub-groups IV, Vb and VIb of the periodic system of elements. The titanium carbide cont...
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WO/1999/011571A1 |
A process and apparatus for the production of reformed gases. Natural gas and oxygen are combusted in a first stage (196) to produce carbon dioxide and water. The products of combustion are conveyed to a second stage (202). Reforming gas...
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WO/1999/009227A1 |
Titanium based metal matrix composites reinforced with ceramic particulate are well known, based on a blend of titanium alloy powders with ceramic powders, e.g., aluminium oxide powders, utilising a low energy ball milling process, follo...
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WO/1999/006600A1 |
A method of upgrading relatively rich, fine-grained earthy hematite iron ores is provided. The iron ore, after suitable preparation, is reduced using a solid state reduction technique. As a result of the reduction processs, the iron grai...
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WO/1999/005330A1 |
The invention concerns metallothermal process and continuous drawing of a metal product consisting of at least one metal, comprising: a step for melting the metal in a first cold crucible (1) heated by induction where the reduction of sa...
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WO/1998/050142A2 |
In this process, at least part of the pure gas stream discharged from the cyclone (2) is used as at least part of the carrier gas at least in one spot of the circulating fluidised bed, the pure gas used as part of the carrier gas is mixe...
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WO/1998/049352A1 |
The wet granulated iron ore is initially conducted through a drying zone. The ore leaves the drying zone at a temperature of 120-400 �C. The ore is then heated in direct contact with hot gas to temperatures of 700-1,100 �C before bei...
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WO/1998/038934A1 |
This invention is a cryoplasty catheter and method for preventing or slowing re-closure of a lesion following angioplasty. The cryoplasty catheter (10) includes a shaft (12) having proximal and distal ends and a dilatation balloon (14) d...
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WO/1998/038342A1 |
A production method of iron carbide for preventing easy formation of free carbon by reducing and carbonizing an iron-containing raw material for iron production by a reaction gas consisting primarily of hydrogen and methane, comprising t...
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WO/1998/038129A1 |
A production method of iron carbide capable of efficiently producing an iron carbide in response to a grain size of an iron-containing material or to the progress of the reaction, comprising the steps of fluidizing a coarse ore in sectio...
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WO/1998/038128A1 |
A production method of iron carbide for preventing easy formation of a metallic carbide on the inner surface of a heating tube of a tubular heating furnace for heating a reducing gas and a carbonizing gas supplied to a reaction furnace, ...
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WO/1998/036102A1 |
Zinc values are recovered from zinc sulphide-containing raw material feed by a process which includes the steps of smelting the raw material in the presence of a carbonaceous reductant to substantially reduce the zinc sulphide to metalli...
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WO/1998/035063A1 |
The present invention pertains to a method and device for direct reduction of ore fines in a wide range of particle size, the reducing agent being hydrogen placed in a fluidized bed gutter with a plurality of sequentially arranged chambe...
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WO/1998/027239A1 |
A method of producing metals and metal alloys from metal oxides is disclosed. The method comprises the steps of: (a) passing a gas at an elevated temperature through a bed of composite agglomerates that are formed from metal oxides and s...
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WO/1998/021372A1 |
A method for manufacturing reduced iron, wherein iron oxide in a pulverized state is subjected to high-temperature reduction. A mixture of pulverized iron oxide and a pulverized solid reducing agent are molded as iron plates, placed on a...
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WO/1998/018969A1 |
In a process for returning finely dispersed solids discharged from a reactor vessel (1) with a carrier gas through a discharge point (2) of the reactor vessel (1) to a return point (15) of the reactor vessel (1), the solids are separated...
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WO/1998/015661A1 |
In a method for producing liquid pig iron (10) from fine particle iron-oxide carriers and lumpy ferriferous material in a melt-down gasification area (9) of a melt-down gasifier, the ferriferous material is molten down in the melt-down g...
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WO/1998/015662A1 |
A method of producing metals and metal alloys from metal oxides is disclosed. The method comprises the steps of partially pre-reducing the metal oxides to a pre-reduction degree of at least 60 % in one or more pre-reduction stages. There...
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WO/1998/015660A1 |
A method for blowing fine particles containing metal oxide into a reducing gas. In order to achieve maximum contact of fine particles with reducing gas, a central material jet formed from fine particles and carrier gas is introduced into...
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WO/1998/015667A1 |
A method has been invented to make rare earth alloy compositions, such as the neodymium iron boron (NdFeB) alloy by a reduction-melting process. The reduction-melting process of this invention comprises the steps of: preparing a primary ...
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WO/1998/015663A1 |
A device (29) for dosed introduction of a fine particle material into a reactor vessel (10) comprising a fluidized bed transfer canal (31) into which a material feeding device (9) opens from the top and into which a gas supply device (33...
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WO/1998/014741A1 |
The invention relates to a method for adjusting the flow velocity of reaction gas and the dispersion air of pulverous solids when feeding reaction gas and finely divided solids to the reaction shaft (6) of a suspension smelting furnace f...
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WO/1998/014622A1 |
The present invention relates to a process for obtaining metals from oxides using shuttle alloys, particularly titanium metal from titanium dioxide in the form of illmenite, rutile. The process can be adapted to obtain elemental metal or...
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WO/1998/004878A1 |
The method of melting oxidic slags and combustion residues with a minimum content of 3 % by weight of metallized components, such as iron and/or carbon carriers, is carried out in a shaft furnace (1) that is directly heated via burners (...
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WO/1997/049637A1 |
A process for beneficiation of an electric arc furnace dust is disclosed. EAF dust (101) is briquetted with coal (60). The briquettes (64) are added to a furnace (12) along with a scrap metal charge (400). Zinc oxide fume (102) is driven...
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WO/1997/049835A1 |
A method and apparatus for producing a more concentrated iron product from an industrial waste materials stream (10) comprising iron and non-iron constituents such as EAF dust generally including the steps of compacting (60 A) the waste ...
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WO/1997/047774A1 |
In a method of charging metalliferous and carboniferous materials that contain a proportion of fines and are at least partially reduced into a smelting-gasification unit (10) in which a smelting-gasification zone (11) is maintained, the ...
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WO/1997/047773A1 |
In a device for producing sponge iron from lumps of iron oxide in a reduction shaft (1), a hot, dust-containing and carbon monoxide-rich reduction gas is used. The reduction gas is generated in a gas generator by partial oxidation of sol...
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WO/1997/046722A1 |
A method for the recovery of iron products, specifically direct reduced iron and iron oxide suitable for use as the feedstock for steel mills, from industrial waste streams containing iron, by treating the waste streams with an ammonium ...
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WO/1997/045564A1 |
The invention concerns a method of treating electric arc furnace (EAF) dust. In the method the dust is preheated and decontaminated under conditions which oxidize the magnetite content of the dust to hematite. Thereafter the preheated an...
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WO/1997/044496A1 |
In a process for the treatment of particulate matter by fluidisation the particulate matter is held and treated in a fluidised bed reactor (1,1', 1'') with the treatment gas flowing from the bottom to the top. To minimise consumption of ...
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WO/1997/044495A1 |
In a process for the treatment of particulate matter by fluidisation the particulate matter is held and treated in a fluidised bed (2) with the treatment gas flowing from the bottom to the top. To minimise consumption of the treatment ga...
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WO/1997/040197A1 |
A metal containing compound reduction and melting process which entails feeding a burden (15) comprising a mixture of the metal containing compound and a suitable reductant in particulate form into an electrically heatable vessel (11) wh...
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