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WO/2003/031664A1 |
A process of producing 99% plus titanium dioxide product by using conventional and microwave heating and leaching of the titanium compound feedstock using acid and oxidants. The solid residue from the leaching is used to produce the high...
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WO/2003/020992A1 |
A reaction vessel (A) for use in producing a high purity titanium sponge by the Kroll process, which has an inner surface of its body (10) being made of carbon steel at least at a liquid level or lower, and a heat shielding plate (30) ma...
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WO/2003/016594A1 |
A method of manufacturing titanium or titanium alloy semi-finished or ready-to-use products is disclosed. The method includes forming shaped bodies of titanium oxide particles and positioning the shaped bodies in an electrolytic cell whi...
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WO/2003/008335A1 |
A method of recovering titanium dioxide from a raw material additionally containing aluminium includes the steps of grinding the titanium dioxide raw material, reacting the particulate raw feed material with sulphuric acid under specifie...
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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/2002/103068A1 |
The invention relates to hydrometallurgy, more specifically to loparite and other concentrates breaking down by highly volatile acids and compounds. The inventive device comprises several reactors connected in series by means of tubular ...
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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/2002/097144A2 |
Process for selectively removing molybdenum from liquid mixtures containing it, in a quantity greater than (200) mg/l, together with vanadium characterized in that it comprises the following steps: bringing the liquid mixture to a pH of ...
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WO/2002/089944A1 |
High purity ammonium dimolybdate or molybdenum oxide is produced by the pressure oxidation of low grade molybdenite concentrates or molybdenum intermediates. The process entails nearly complete oxidation of the sulfide minerals while opt...
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WO/2002/090263A1 |
The process chemistry during the oxidation of molybdenite concentrates in an oxygen pressure leach can be controlled by regulating the amount of ferric iron and excess sulfuric acid recycled as autoclave discharge slurry or filtrate to t...
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WO/2002/088412A2 |
Extruded tantalum billets and niobium billets are described having a substantially uniform grain size and preferably an average grain size of about 150 microns or less and more preferably an average grain size of about 100 microns or les...
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WO/2002/083960A1 |
The invention relates to a method for separating zirconium and hafnium tetrachloride with the aid of a solvent comprising an alkaline metal solvent formed from an alkaline metal chloride salt and an acid metal chloride A, e.g. a chloroal...
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WO/2002/072898A1 |
The invention relates to hydrometallurgical processing of ore concentrates, more specifically to the processing of loparite and other titaniferous concentrates. Said invention can be successfully used for producing titanium dioxide of va...
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WO/2002/072205A2 |
During processing of cyclone dust (4) resulting from the chlorination of titanium ore, a disposable filter cake (26) having a dry residue of greater than 40 % (without inert portions serving as a supporting structure), regardless of whet...
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WO/2002/072899A2 |
A method of recovering zirconium values from an ore containing zircon, baddeleyite, and uranium is disclosed. The method includes fusing the ore with soda ash and contacting the resulting fused ore with sulfuric acid, which generates an ...
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WO/2002/070759A1 |
The present invention relates to a method and apparatus for the production of titanium metal. Presently, titanium is very expensive to produce. The present invention proposes a less expensive process involving a direct reduction of a tit...
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WO/2002/070760A1 |
The invention provides a furnace having a frozen lining inbetween a furnace lining and a charge within the furnace, the furnace including means to control the operation of the furnace, including means to measure the temperature in a wall...
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WO/2002/068331A1 |
A method is disclosed to recover compounds from red mud comprising adding red mut (5) to a digester (10) containing an acid and heating the mixture to dissolve compounds of iron, aluminun, silicon and titanium to provide a digest contain...
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WO/2002/066711A1 |
A method of producing a metal or an alloy from metalliferous material by removing O, S, or N from a solid body of metalliferous material by electrolysis in an electrolytic cell is disclosed. The cell includes a molten halide salt or mixt...
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WO/2002/066693A1 |
The invention is directed to a method of preparing porous metals, as well as to these porous metals $i(per se). More in particular the invention is directed to the use of these porous metals in the preparation of medical items, such as i...
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WO/2002/064846A1 |
A method of binding the particles of a particulate material comprises preparing a composition comprising the particulate material, an alkali metal silicate and a curing agent, forming said composition into a shaped body and allowing said...
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WO/2002/061158A1 |
Disclosed is a method for obtaining metal oxide concentrate from an ore containing metal and iron. The ore is subjected to the effects of chlorine in a fluidized bed reactor in the presence of carbon and optionally other additives at a t...
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WO/2002/052050A1 |
The inventive method consists in grinding and breaking down a loparite concentrate by nitric acid. A solution is separated by the filtration thereof on a ferrum-thorium cake and a pure nitrate solution of rare-earth elements which are pr...
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WO/2002/052051A2 |
A method for heartless processing of a solid metallic material consisting essentially of titanium or other metal or alloy thereof which includes providing a solid metal block (10) having processing surface (14) and a base surface (12) an...
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WO/2002/049964A1 |
A reactor 20 has a plurality of tubular downcomers 32, 34, 36, 38, 40 and risers 42, 44, 46, 48, 50, joined by sections 86, 88 in a continuous serpentine path the tubes dimensioned to provide substantially plug flow conditions for solid ...
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WO/2002/048412A1 |
A method of recovering titanium dioxide from a titanium oxide bearing raw material, such as e.g. steel slags rich in TiO2 includes the steps of grinding the titanium dioxide raw material, reacting the particulate raw feed material with s...
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WO/2002/042505A1 |
The invention relates to hydrometallurgical ore concentrate processing, more specifically to loparite concentrate processing. The inventive method consists in grinding the concentrate in order to obtain a grain size of at least 0.075 mm,...
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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/2002/036839A1 |
The invention concerns a method or procedure and an installation of metal retrieving from used water chroming solutions, with high content of Cr and other impurifying metals as Fe, Cr?3+¿, Cu, using as reactive the gas ammonia, introduc...
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WO/2002/036495A1 |
The process of the present invention relates to a process for recovering the carbide metal from metal carbide scrap wherein the metal is tungsten, titanium, vanadium, chromium or molybdenum, and this process comprises (A) providing a mix...
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WO/2002/029125A1 |
A high purity zirconium or hafnium which is extremely reduced in the contents of an alkali metal such as Na or K, a radioactive element such as U or Th, a transition metal or heavy metal or high melting point metal such as Fe, Ni, Co, Cr...
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WO/2002/024575A1 |
Tungsten carbide is formed from a tungsten material which is preferably tungsten carbide scrap. If scrap material is used, this is oxidized and acid leached to remove impurities and any binder material. This is then dissolved in a soluti...
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WO/2002/023651A1 |
The method relates to a pyrometallurgical and hydrometallurgical process for the recovery and recycling of lithium and vanadium compounds from a material comprising spent rechargeable lithium batteries, particularly lithium metal gel and...
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WO/2002/022895A1 |
A method for producing a metal or a metal compound, such as niobium or tantalum, from a raw material containing the metal through a process of treating with fluorine using a solution containing hydrofluoric acid, characterized in that an...
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WO/2002/020408A1 |
The invention concerns a method for separating a metal (1) from a metal (2), preferably zirconium from hafnium, which consists in dissolving said metals in an aqueous solution wherein said metals are in a state preventing them from passi...
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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/2002/011932A1 |
A method for producing a tantalum powder, which comprises a high temperature heat treatment step of reducing tantalum potassium fluoride with sodium and subjecting the resultant reduced tantalum powder to a high temperature heat treatmen...
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WO/2002/010068A1 |
There is described a proces for the purification of metal oxides which comprises the steps of: (i) roasting a mineral ore in the presence of an alkali; (ii) extracting the desired metal salt produced in step (i); (iii) precipitation of a...
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WO/2002/004118A1 |
The present invention pertains to a catalyst composition comprising at least one non-noble Group VIII metal component, at least two Group VIB metal components, and at least 1 wt.% of a combustible binder material selected from combustibl...
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WO/2002/000948A1 |
The inventive method for producing refractory metals from a concentrate of laporite consists in the following: the concentrate of laporite is finely crushed and disintegrated with the aid of concentrated nitric acid at an atmospheric pre...
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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/2001/094009A1 |
A method for preparing a catalyst, wherein a hydro-refining catalyst (a waste catalyst) which has been used in hydro-refining and is reduced in activity is heat-treated (S1) and then pulverized to give a regenerated powder (S2), the rege...
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WO2000049188A9 |
Tantalum scrap of high oxygen content (10) is recovered and processed to metallurgical grade tantalum by fine particulation. Blending with carbon or other appropriate solid reducing agent (14), melting in a plasma furnace (20) at about t...
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WO/2001/085307A1 |
The present invention is directed to a process for the purification of flue gas, wherein flue gas is contacted with a carbonaceous material, said carbonaceous material comprising the solid carbonaceous residue of synthetic rutile product...
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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/2001/083837A1 |
A titanium nitride alloy of crystalline grain structure, and composite material of a titanium nitride alloy of crystalline grain structure over a titanium substrate, and method for forming alloys of titanium with various alloying materia...
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WO/2001/081029A1 |
A niobium powder for use in a capacitor, characterized in that it comprises a niobium powder being partially oxydized and partially nitrized which has a mass ratio of the amount of nitrogen to that of oxygen of 1/45 or more; a sintered c...
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WO/2001/079571A2 |
A titanium dioxide compound was isolated from a rare type of naturally occurring ore. Processes for efficiently isolating and obtaining these TiO¿2? compounds, as well as methods for using them have been developed. These TiO¿2? compoun...
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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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