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WO/2001/075185A1 |
A process for providing a zirconium basic sulfate includes providing a zirconium oxychloride solution, and then dialyzing the solution against a liquid selected from water and an aqueous solution across at least one anion exchange membra...
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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/2001/059166A1 |
To provide nitrogen-containing metallic powder at high productivity, which comprises a metal such as niobium or tantalum containing nitrogen uniformly, and enables production of an anode electrode that has high specific capacitance and l...
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WO/2001/045906A2 |
Methods for manufacturing titanium and zirconium alloys, particularly including such alloys in powder form by continuous vapor phase chloroaluminothermic reduction.
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WO/2001/042518A1 |
According to the present invention there is provided a method of digesting metal containing material comprising the steps of providing the metal containing material; and reacting the metal containing material with a source of at least on...
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WO/2001/042520A1 |
According to the present invention there is provided a method of digesting titanium containing material comprising the steps of providing the titanium containing material; and reacting the titanium containing material with sulphuric acid...
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WO/2001/041151A2 |
The invention comprises a method for the dissolution of spent nuclear fuel pins or contaminated cladding, the method comprising contacting together the pins and both nitric and fluoroboric acids which, preferably, are present in admixtur...
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WO/2001/018271A1 |
The refining hearth (70) comprises an open vessel defining a first deep zone (78) having a predetermined depth, a second deep zone (82) having a predetermined depth, and a shallow zone (80) intermediate the first deep zone (78) and the s...
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WO2000073247A9 |
Carbon monoxide is produced in a fast quench reactor. The production of carbon monomide includes injecting carbon dioxide and some air into a reactor chamber having a high temperature at its inlet and a rapidly expanding a reactant strea...
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WO/2001/012556A1 |
The invention provides a process for the production of titanium tetrachloride (TiC¿l4?)by the chlorination of titanium values in a titanium-containing starting material. The process includes exposing the starting material to a chlorinat...
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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/2001/012364A1 |
Process for producing formed Ta/Nb powder metallurgy products using Ta and/or Nb hydride powders with an oxygen content greater than a target level, e.g., 300 ppm, heating the metal hydride in the presence of another metal having a highe...
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WO/2001/002299A1 |
The present invention is a process for controlling, at an aim point, the passivation of aluminum chloride formed in a stream of titanium tetrachloride.
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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/2000/075075A1 |
This invention relates to a process of treating a zirconium containing product such as zircon. The process comprises providing an alkali fusion decomposed zircon product (AFDZ) formed from reading zircon with a source of alkali metal at ...
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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/2000/065108A1 |
The invention relates to a method for processing steel slags and optionally ferriferous materials such as e.g. electric furnace slags, converter slags, dust produced during the manufacturing of steel, rolling mill cinders or secondary me...
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WO/2000/060130A1 |
Titanium dioxide is produced according to the sulfate method by dissociating ground titaniferous starting materials with sulfuric acid and washing the metal sulfates out of the dissociation cake, removing the non-dissociated remainders, ...
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WO/2000/056662A1 |
The invention relates to a method for oxidizing vanadium in materials containing vanadium with an oxidation level of less than V. Oxidation is carried out at least partially using elementary chlorine as oxidizing agent, whereby vanadium ...
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WO/2000/055931A1 |
Surfaces suited to performing chemical reactions thereon are provided by a sponge material (16) having fine dendrites (18). The sponge material may be formed by growing the dendrites on a substrate (14) or particles of the sponge materia...
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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/2000/050650A1 |
An filter-press type electrochemical cell for the electrolixiviation of metals, comprising at least one first and second electrode, whereby at least one electrode is three-dimensional and the three-dimensional electrode comprises a super...
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WO/2000/048944A1 |
Disclosed and claimed are efficient methods for leaching minerals from ores using an acidic solution such as sulfuric acid. Additional factors which can improve mineral recovery include the use of an alkali metal halide, grinding the ore...
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WO/2000/048771A1 |
The invention concerns an appliance for moulding parts made of very reactive metal or mixture of metals, comprising, inside a vacuum chamber (15) a cold induction-heated crucible (1) whereof the base comprises a removable sectored plug (...
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WO/2000/039350A1 |
The invention relates to a method for extracting anions based on metals of the V group to the VII group of the periodic table from the aqueous solution thereof. To this end, compounds or general formula (I) are used as an extracting agen...
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WO/2000/031310A1 |
High purity tantalum metals and alloys containing the same are described. The tantalum metal preferably has a purity of at least 99.995 % and more preferably at least 99.999 %. In addition, tantalum metal and alloys thereof are described...
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WO/2000/024943A1 |
The invention relates to a process for treating tantalum and/or niobium containing raw materials such as wastes, slags, concentrates and ores. The tantalum and/or niobium containing raw materials are processed by repeated use of a soluti...
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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/2000/006786A1 |
This invention relates to a method of treating titania slag to increase the leachability of impurities from the slag comprising the steps of sizing the titania slag to a particle size from 75 to 850 $g(m)m; oxidising the sized slag parti...
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WO/2000/002813A1 |
The specification discloses a process for recovering chlorine from a chlorinator waste. The process involves treating the chlorinator waste with oxygen in a fluidised bed under conditions which promote the conversion of metal chlorides t...
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WO/2000/001853A1 |
A fine-grained product which consists of the following main constituents in a dry state: 10 to 80 wt. % TiO¿2?, 20 to 60 wt. % carbon and optionally, 5 to 20 wt. % SiO¿2?; is produced during the production of titanium dioxide according...
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WO1999041417B1 |
The integrated process of the subject invention is directed to the production of high purity molybdenum chemical products from molybdenum sulfide containing materials by a series of steps, including roasting, sulfuric acid leaching of th...
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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/1999/058732A1 |
There is provided a process to reclaim molybdenum, vanadium and other hydrodesulfurisation metals from catalysts, said process comprising collecting one or more catalysts containing at least one metal sulfide; leaching the catalyst in an...
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WO/1999/048808A1 |
The invention relates to a method for producing gypsum and an iron oxide pigment from the waste acid resulting from the production of titanium dioxide according to the sulfate process. The invention is characterized in that in an initial...
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WO/1999/045160A1 |
The invention relates to a method for oxidating vanadium in materials which contain vanadium in an oxidation step lower than V, characterised in that electrochemical oxidation occurs at least partially in the form of anodic oxidation. Th...
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WO/1999/041317A1 |
A process for the production of titanium dioxide by dissolving titanium raw materials with sulfuric acid, producing a metal sulfate-containing titanyl sulfate solution, hydrolyzing the titanyl sulfate, separating the titanium dioxide hyd...
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WO/1999/022035A1 |
A condensation chamber (32, 36) and method for condensing a metal connate from a metal rich gaseous mixture are disclosed. The condensation chamber (32, 36) includes top (38, 42) and sidewall surfaces (52, 54) that together define a cent...
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WO/1999/022036A1 |
The invention relates to a method for opening up materials containing noble metals, especially metallurgic primary concentrates. The materials are subjected to halogenation at a high temperature using gaseous processing media, gold and t...
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WO/1999/020804A1 |
It has been discovered that electroslag remelting of titanium metal or alloys under controlled partial pressures of nitrogen, and somewhat oxygen, can dissolve nitrogen-rich inclusions to help eliminate or reduce initiation sites for cra...
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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/1999/013135A1 |
Electrochemical dissolution, especially of nuclear fuel pins, is performed using a substrate container in the form of a perforate stepped truncated pyramid. The polarity of the electrodes may be reversed during an initial stage of the pr...
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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/1999/007905A1 |
An improved method for disintegrating sintered hard metal carbide bodies with comparatively low energy expenditure and recovering hard metal carbide powder, having about the same granulometric composition as the original metal carbide pa...
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WO/1999/007640A1 |
The present invention is directed to a fluidized bed roasting apparatus and method for converting molybdenite to molybdeum trioxide. The fluidized bed roasting apparatus includes cooling tubes, a means of vibration, a distributor plate, ...
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