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Matches 651 - 700 out of 3,911

Document Document Title
WO/2008/067594
Impurities are removed from bauxite by leaching a bauxite ore using a leach solution to dissolve impurities from the bauxite ore and form a pregnant leach solution containing the impurities in solution, removing the leached bauxite ore f...  
WO/2008/059439
A method of treating value bearing material comprising oxidised or surface oxidised mineral values includes the steps of crushing the value bearing material, contacting the crushed material! with a sulfide solution to sulfide the oxidise...  
WO/2008/055335
The process, according to the invention, comprises the following stages: (a) processing (1) of the laterite ore (O) by crushing, scrubbing, attrition, separation, and high-intensity magnetic separation; (b) Leaching (2) of the non-magnet...  
WO/2008/053616
A method for collecting a valuable metal from an indium-tin oxide (ITO) scrap, characterized by collecting metal indium by the electrolysis of the ITO scrap; a method comprising conducting the electrolysis of the ITO scrap in an electrol...  
WO/2008/054648
Provided is a method for the production of sulfuric acid through bio-oxidation. In one embodiment, the method for producing sulfuric acid includes the steps of: aggregating a solution, a sulfur, and a substrate material to form an aggreg...  
WO/2008/052324
A method for recovering zinc ions by selective sulfide precipitation from an aqueous solution comprising zinc ions and metal ions of a metal that precipitates as metal sulfide at a pH lower than a pH at which zinc ions precipitate as zin...  
WO/2008/053618
Disclosed is a method for collecting a valuable metal from an indium-tin oxide (ITO) scrap, characterized by conducting the electrolysis of the ITO scrap in an pH-adjusted electrolyte solution to collect indium or tin in the form of an o...  
WO/2008/049177
"Method for production of metallic cobalt from the raffinate from solvent extraction of nickel". Said method comprises the following stages: (A) obtaining the raffinate from solvent extraction of nickel, for production of cobalt; (B) add...  
WO/2008/046114
A microbial leaching process is carried out on a heap of particulate chalcopyrite ore by adding carbon dioxide to an air stream directed into the heap at least when the heap is at mesophilic temperatures, to stimulate growth, and to achi...  
WO/2008/046114
A microbial leaching process is carried out on a heap of particulate chalcopyrite ore by adding carbon dioxide to an air stream directed into the heap at least when the heap is at mesophilic temperatures, to stimulate growth, and to achi...  
WO/2008/038401
A process for producing an iron arsenide compound, comprising adding an oxidizer to an aqueous solution containing arsenide ions and ferrous ions wherein the arsenic concentration is 15 g/L or higher, agitating the solution so as to adva...  
WO/2008/034189
A method for recovering nickel, a nickel compound or a mixed nickel and cobalt compound comprising: (a) providing a nickel-containing leach solution in which nickel is dissolved in a solvent; (b) subjecting the leach solution to nano-fil...  
WO/2008/036816
The present invention is directed to the selective removal of ferric ion and/or ferric compounds from valuable metal recovery process streams.  
WO/2008/036985
A process of bioleaching a sulphide mineral slurry in a reactor which is controlled by varying the rate of supply of sparging gas to the reactor, and the energy supplied to a motor-driven agitator in the reactor, in response to the measu...  
WO/2008/034198
The present invention relates to a resin which is a copolymer of a polystyrene and a non-styrenic polymer, wherein the non-styrenic polymer includes the following subunit: Formula (I) wherein Rb is a divalent linking group, preferably al...  
WO/2008/034188
A method for producing a feed material for a leaching process comprises the steps of mixing ore or concentrate particles with water and optionally other additives, the particles including relatively fine particles and relatively coarse p...  
WO/2008/036985
A process of bioleaching a sulphide mineral slurry in a reactor which is controlled by varying the rate of supply of sparging gas to the reactor, and the energy supplied to a motor-driven agitator in the reactor, in response to the measu...  
WO/2008/032288
The invention relates to a process for the pre-treatment of feed to a non-stirred surface heap leach bioreactor by applying in sequence first and second pre-treatment solutions to a feed to a non-stirred surface heap leach bioreactor, in...  
WO/2008/032288
The invention relates to a process for the pre-treatment of feed to a non-stirred surface heap leach bioreactor by applying in sequence first and second pre-treatment solutions to a feed to a non-stirred surface heap leach bioreactor, in...  
WO/2008/031203
Nickel entrained in the sulphide mineral pyrrhotite is engineered to dissolve in leaching acid in a two step procedure. First, a slurry of the mineral and the acid is activated by oxidation. This is done in a time Tl by electrolysis; or ...  
WO/2008/028245
A sulfate process for producing titania from a titaniferous material (such as an iron-containing titaniferous material; such as ilmenite) is disclosed. The process includes precipitating titanyl sulfate from a process solution produced i...  
WO/2008/028664
The present application is directed to a method for the purification of Radium, in particular 226Ra1 for target preparation for an essentially pure 225Ac production from available radioactive sources, using an extraction chromatography i...  
WO/2008/028244
A sulfate process for producing titania from a titaniferous material (such as an iron-containing titaniferous material such as ilmenite) is disclosed. The process includes digestion and/or leach steps that form a process solution that in...  
WO/2008/022381
A process for producing a metallic nickel product with a low iron content, including the steps of: (i) providing an acidic product liquor containing at least nickel and iron; (ii) subjecting said acidic product liquor to an ion exchange ...  
WO/2008/022395
An improved hydrometallurgical method (10) for the extraction of nickel from laterite ores, the method comprising the method steps of: i) Forming at least one primary heap (20) from nickel laterite ore material; ii) Leaching the primary ...  
WO/2008/021684
A precursor halide compound is reduced to a predetermined product at substantially ambient conditions. The halide is added to an anhydrous liquid reaction medium containing one or more alkali metals or alkaline earth metals as reductants...  
WO/2008/019633
This invention relates to non-ferrous hydrometallurgy and, in particular, to the thickening of aqueous lateritic-ore pulps in pressurized acid technology. A novel process has been developed with a view to increasing the percentage of sol...  
WO/2008/021683
A titanium halide and, optionally, other precursor halides compound are reduced to a predetermined titanium product, suitably at or near ambient conditions. Titanium tetrachloride, for example, is added to an anhydrous liquid reaction me...  
WO/2008/015582
The addition of a compatible metal salt crystal to the organic solution entering the mixer(s) in the solvent extraction stage(s) and/or the stripping stage(s), or to the emulsion mixture of the organic solution and the aqueous solution i...  
WO/2008/015582
The addition of a compatible metal salt crystal to the organic solution entering the mixer(s) in the solvent extraction stage(s) and/or the stripping stage(s), or to the emulsion mixture of the organic solution and the aqueous solution i...  
WO/2008/015108
The invention relates to a method of recovering molybdenum from a molybdenum bearing sulfide material. The material is contacted with a leaching solution in the presence of iron compounds and mesophilic or thermophilic iron oxidizing mic...  
WO/2008/010175
The invention relates to an air distributor (1) for a bio-assisted heap leaching system which comprises a pipe having a series of apertures through the wall of the pipe, with the series of apertures (3) configured operatively to face dow...  
WO/2008/010175
The invention relates to an air distributor (1) for a bio-assisted heap leaching system which comprises a pipe having a series of apertures through the wall of the pipe, with the series of apertures (3) configured operatively to face dow...  
WO/2008/003160
The present invention relates to a pressure acid leaching process for limonitic Ni laterite ores. A portion of the mother liquor generated from pressure acid leaching is recycled to pulped ore preparation. The thickened leach pulp is mix...  
WO/2008/003152
The present invention concerns a process for the instantaneous control of the precipitation of nickel and cobalt present in a leach liquor by adjustment of the pH-value. Said leach liquor is obtained by pressurized acidic leaching of lat...  
WO/2008/000810
The invention relates to a method for decomposing superalloys, especially superalloy scraps in an alkali metal salt bath and then recovering the precious metals, very precious metals such as tungsten, tantalum, and rhenium being recovered.  
WO/2007/143807
The invention provides a recycling step in an oxidative pressure leaching process for recovery of metals using halide ions, in which a portion of the leached solids are recycled back to the feed to the autoclave, to allow two or more pas...  
WO/2007/143777
An improved leaching method (10) comprising the method steps of: i) preparing and stacking an ore material (12) to be leached such that the ore material is suitable for an atmospheric leach (18); ii) applying a lixiviant (20) at an initi...  
WO/2007/140554
"AN ORE HEAP LEACHING PROCESS FOR METAL PRODUCTION WITH THE AID OF SOLAR ENERGY", involving ore crushing (1 ), followed by fines agglomeration (2), and then addition of sulfuric acid and/or additives (3) to produce the heap leach pile (4...  
WO/2007/137325
A process for recovering metals involving ion exchange comprising the step of recovering metal species from an ion exchange resin by elution of the resin with an eluent system containing (i) a first sulphite component comprising at least...  
WO/2007/134343
A heap leaching method to recover copper from a primary copper sulphide mineral wherein the mineral is leached in an acidic chloride or mixed chloride/sulphate solution in the presence of oxygen with the surface potential of the mineral ...  
WO/2007/134343
A heap leaching method to recover copper from a primary copper sulphide mineral wherein the mineral is leached in an acidic chloride or mixed chloride/sulphate solution in the presence of oxygen with the surface potential of the mineral ...  
WO/2007/134344
A tank leaching method to recover copper from a slurry of a copper sulphide mineral concentrate and an acidic or mixed chloride/sulphate solution. Leaching takes place in the presence of dissolved oxygen and the surface potential of the ...  
WO/2007/130282
A method of stripping nickel from a printed wiring board comprises providing a printed wiring board with a nickel deposit on a surface and contacting the nickel deposit with phosphate ions and an oxidizer. An aqueous solution comprises a...  
WO/2007/130985
The present invention relates generally to a process for recovering copper and/or other metal values from a metal-bearing ore, concentrate, or other metal-bearing material using pressure leaching and direct electrowinning. More particula...  
WO/2007/125147
As living beings, the environment and man need to incorporate energy from the atmosphere and the earth in order for the complementary phenomenon of life to develop; where man has access to only 22% of the atmosphere incorporating oxygen ...  
WO/2007/125627
A method of treating an arsenic-containing solution, such as an arsenic-containing solution of high purity and high concentration obtained by treating an arsenic-containing substance wherein various elements other than arsenic are contai...  
WO/2007/127028
A process is provided for handling waste solids produced from the chlorination of titanium-bearing ores in the presence of coke as a reducing agent, in particular waste metal chloride solids from a chloride process for making pigmentary ...  
WO/2007/122720
An industrially practicable method of metal recovery in which from a raw material containing at least one metal selected from the group consisting of chromium, nickel, manganese, copper, germanium, rhodium, lead, bismuth and lanthanoid e...  
WO/2007/119239
A process for extracting precious metals form ore that includes: collecting the ore, crushing the ore, enriching the ore using sulphuric acid at least in one washing cycle. Then precious metals are leached from the enriched ore by a non-...  

Matches 651 - 700 out of 3,911