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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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WO/2001/081637A1 |
A molten-bath based direct smelting process and apparatus for producing metals from a ferrous material is disclosed. The process includes injecting feed materials being solid material and carrier gas into a molten bath at a velocity of a...
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WO/2001/079572A1 |
A ferrochrome alloy is produced from an ore or concentrate by smelting the ore or concentrate in the presence of a reductant which is a carbide alone or a carbide in combination with another reductant. The carbide is preferably silicon c...
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WO/2001/072456A1 |
The invention relates to a method for producing metal bodies by mixing metal compound particles with a binding agent and compacting them to form shaped parts, whereby the binding agent is subsequently removed and the metal compound is re...
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WO/2001/066809A1 |
A metal having a high chromium content, characterized in that it is produced in an arc melting furnace and contains Cr in an amount of 85 % or more and has an Al content of 0.005 % or less, an Si content of 0.1 % or less and an S content...
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WO/2001/062994A1 |
A method for the production of a master alloy including the steps of; introducing mixed ores comprising the metals of the alloy; introducing the mixed ores into an electrochemical cell, the cell containing a liquid electrolyte comprising...
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WO/2001/062995A1 |
A method for the manufacture of a foamed metal or alloy article including the steps of: A) selecting a particulate feedstock having suitable proportions of a metal element or combination of metal elements M¿1? contaminated by one or mor...
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WO/2001/055463A1 |
A process for producing purified cobalt from a mixture comprising metallic species of cobalt and metallic species of at least one of the group consisting of nickel and iron, comprising producing a metal carbonyl mixture of cobalt carbony...
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WO/2001/055461A1 |
The invention relates to a method for removing chrome and/or nickel from liquid slags, or slag mixtures, whereby the liquid slag is charged onto a metal bath, in particular an Fe-bath, and reduced, by contacting with carbon, or a carbon ...
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WO/2001/048254A1 |
The invention relates to a method for the utilisation of synthetic material in the thermal treatment of metalliferous recyclings in a multi-level furnace which is partitioned into three zones. Each zone is provided with several levels on...
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WO/2001/046478A2 |
A smelting reduction apparatus which separates exhaust gas, which is exhausted from a melter-gasifier (40) or a fluidized bed reactor (10, 20, 30), into dusts and reducing gas to supply them to each fluidized bed reactor (10, 20, 30) res...
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WO/2001/044522A1 |
The invention relates to the reduction of ore fines, whereby said ore fines (1) are pre-heated in a multi-stage suspension-type heat exchanger (I), calcined and subsequently reduced in at least one lowest heat exchanger stage (2) by addi...
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WO/2001/044518A1 |
A method for decreasing the elutriation loss of fine iron ore in a circulating fluidized bed type reducing operation is disclosed. The method includes charging lime stone (CaCO¿3?) or dolomite (CaCO¿3?, MgCO¿3?) in an amount of 3-6 vo...
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WO/2001/040528A1 |
The invention concerns post-treatment method for metallurgical slag containing metal oxides which are difficult to deoxidize. The molten slag is subjected to a treatment to reduce the metal oxides contained therein and to elutriate the d...
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WO/2001/035428A1 |
The invention relates to an electrolytic capacitor containing a niobium anode, a niobium oxide depletion layer, a semiconducting cathode and an electrolyte, whereby the niobium oxide depletion layer contains at least one metal selected f...
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WO/2001/034859A1 |
The invention relates to a method for the precipitation of nickel from its aqueous solution as a metal powder using hydrogen. The aqueous solution containing nickel compounds is neutralised first with an earth alkali or alkali compound s...
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WO/2001/032945A1 |
A process and apparatus for desulfurisation of nickel powder is disclosed in which the nickel powder is heated in a hydrogen-containing atmosphere to promote the formation of hydrogen sulfide gas. The hydrogen sulfide gas is then removed...
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WO/2001/025496A1 |
The present invention relates to carbon containing agglomerates for use as a reduction material in production of metals and alloys. The agglomerates comprise a binder and 10 to 80% by weight of one or more fine particulate carbon materia...
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WO/2001/021845A1 |
A process for the reduction of a manganese oxide to manganese carbide, the process including contacting the metal oxide in solid form with a gaseous reducing/carburising agent and optionally an inert gas at elevated temperature.
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WO/2001/018256A1 |
A method for metal smelting, which comprises a step of pre-reducing a mixed raw material provided by mixing in advance or mixing-granulating or mixing-molding at least a metal oxide and/or hydroxide and a carbonaceous material in a pre-r...
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WO/2001/012867A1 |
A tantalum production apparatus and method for producing tantalum by repeating a series of processes is provided. The tantalum production apparatus includes a vaccum means for preventing tantalum from being combined with oxygen and oxidi...
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WO/2001/009400A1 |
The invention relates to a method for producing lithium of very high purity, whereby said method comprises a step in which lithium oxide compounds are thermally reduced in vacuum by means of aluminum. According to the invention, a mixtur...
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WO/2001/007671A1 |
A method of producing a corrosion resistant ferrous product is disclosed. The product is produced by rolling a heated billet which comprises a mass of mild steel swarf in a stainless steel jacket. Two reducing agents are present in the j...
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WO/2000/079014A1 |
The invention relates to a method for recovering metallic chromium from slag containing chromium oxide, from converter processes such as AOD, MRP, AOD-L, MRP-L, CLU, ASM, Conarc stainless steel or vacuum processes such as VOD, SS-VOD, RH...
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WO/2000/079013A1 |
A 2-Stage fluidized bed type reducing apparatus and a reducing method for fine iron ore of a wide particle size distribution with increasing the reducing gas utilization degree are disclosed. Fine iron particles dropping through the hole...
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WO/2000/076698A1 |
A process for forming a shaped metallic article, including the steps of combining the starting materials, forming the starting materials into a shape to produce a nonmetallic metal precuror article of a certain geometry, and converting t...
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WO/2000/075385A1 |
The invention relates to a method for conditioning slag (17) and for recycling metallurgical residual materials in the iron and steel industry, in order to profitably utilise the slag (5, 7) and residual materials (6) which are produced ...
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WO/2000/073519A1 |
This invention relates to equipment for the feed of pulverous material to a concentrate burner of a suspension-smelting furnace, so that the feed of solid finely divided material into the furnace is distributed evenly in the concentrate ...
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WO/2000/070103A1 |
The present invention relates to a method and equipment, whereby matte with a high non-ferrous metal content and disposable slag are produced simultaneously in a suspension-smelting furnace from non-ferrous sulphide concentrate. Accordin...
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WO/2000/070101A1 |
The invention relates to a method and installation for utilising residual material which contains iron, heavy metals and optionally iron ore. In said method, the following take place: residual material and optionally the iron ore is intr...
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WO/2000/067936A1 |
Metal powder Ta and/or Nb, with or without one or metals from the group Ta, Nb, Ti, Mo, W, V, Zr and Hf, is made in a fine powder form by reduction of metal oxide by contact with a gaseous reducing agent, preferably an alkaline earth met...
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WO/2000/068440A1 |
A device (1) for induction-heating and melting metal oxides-containing powder and granular material, which can suitably remove metals in burned ash and flying ash to render them harmless, recover metals with high purities and recovery ra...
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WO/2000/066796A1 |
The invention concerns a method using pyrometallurgy for treating waste containing metals generally in oxidised form, in a first zone including vertically spaced hearths, of a multistage furnace, which consists in: introducing the waste ...
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WO/2000/065114A1 |
The present invention is concerned with a method for the pre-reduction of laterite fines in a reactor, preferably a fluidized bed, with reducing gases generated $i(in situ) by adding a reducing agent such as a carbonaceous material in th...
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WO/2000/052215A1 |
The invention provides a process and installation for the treatment of a solid. The process includes passing the solid along a kiln having a hollow interior, while supporting the solid on supports moved successively along the kiln and he...
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WO/2000/050969A2 |
Techniques for inducing a contact to invoke a resource prepared by a promoter when the resource resides on a network, includes generating a resource location description for the resource (1030). The resource location description includes...
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WO/2000/050649A2 |
The present invention relates to a method and apparatus for separating undesired toxic metals, such as Zn, Pb and Cd, from iron-containing materials by: sintering a mixture of such materials (typically including EAF dust and mill scale) ...
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WO/2000/050652A1 |
A process for treating a metal sulphide concentrate which includes the steps of: a) roasting the concentrate to reduce the sulphide content of the concentrate, to a negligible value and b) melting the concentrate, under reducing conditio...
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WO/2000/047784A2 |
The present invention pertains to the metallurgy of non-ferrous metals and essentially relates to a carbo-thermal method for producing silicon used in the photo-electronic industry, mainly in the production of solar panels. This method i...
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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/2000/026420A1 |
This invention relates to a method of operation of a rotary hearth furnace (28) in conjunction with an electric melter (34) for the production of high purity iron product (36). The method includes producing high purity iron product (36) ...
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WO/2000/022176A1 |
A process and an apparatus for producing metals from a metalliferous feed material are disclosed. The process includes the steps of partially reducing and at least partially melting a metalliferous feed material in a pre-reduction/meltin...
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WO/2000/017404A1 |
The invention relates to a method for producing directly reduced metal in a multi-tiered furnace, whereby metal oxides and a reducing agent are inserted into the furnace and the process heat required for the reduction of the metal oxides...
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WO/2000/014285A1 |
A direct smelting process for producing metal from a metalliferous feed material is disclosed. The direct smelting process is a molten bath-based process in which smelting occurs predominantly in the metal layer, carrier gas/metalliferou...
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WO/2000/009766A1 |
The invention relates to a method for the thermal processing of residues containing heavy metals and iron oxide, designed for use in a multiple-hearth furnace which comprises several hearths positioned on top of each other. According to ...
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WO/2000/007760A1 |
Purification process for chromium metal is conducted on chromium metal powder which has been compacted without additives at a pressure of at least 50,000 psi (35 x 10?7¿ Pa) into a compacted body having a critical diffusion dimension of...
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WO/2000/006783A1 |
A process for direct smelting a metalliferous feed material is disclosed. The process includes the steps of partially reducing metalliferous feed material and subsantially devolatilising coal in a pre-reduction vessel and producing a par...
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