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Matches 651 - 700 out of 4,020

Document Document Title
WO/2009/063482
A process for extraction of alumina from aluminum containing ores is disclosed. The process involves the following steps: determining the alumina and silica content in the ore; treating the ore with caustic, subjecting the reaction mass ...  
WO/2009/063482
A process for extraction of alumina from aluminum containing ores is disclosed. The process involves the following steps: determining the alumina and silica content in the ore; treating the ore with caustic, subjecting the reaction mass ...  
WO/2009/063128
Equipment to be placed in the settler (6) of liquid-liquid extraction. The equipment comprises an overflow chute (10) for receiving a first solution as an overflow from the settler; a first outlet box (11) that is placed on a lower level...  
WO/2009/059336
A method of conducting a bioleaching process including the steps of forming a main heap, culturing at least one microorganism which exhibits bioleaching activity in a predetermined temperature range, monitoring the temperature in the mai...  
WO/2009/052362
The present invention relates to polysaccharides that have been modified by- providing azetidinium functionality thereto. Such functionality can be provided by crosslinking a polysaccharide with a resin having azetidinium functional grou...  
WO/2009/044298
A composition and method for agglomerating/coagulating silica particles in aqueous mineral process streams comprising polyalkylene glycols and non-salt polyether amines and further contacting with flocculant agent. The invention further ...  
WO/2009/044298
A composition and method for agglomerating/coagulating silica particles in aqueous mineral process streams comprising polyalkylene glycols and non-salt polyether amines and further contacting with flocculant agent. The invention further ...  
WO/2009/044298
A composition and method for agglomerating/coagulating silica particles in aqueous mineral process streams comprising polyalkylene glycols and non-salt polyether amines and further contacting with flocculant agent. The invention further ...  
WO/2009/039643
A process for producing a purified nickel hydroxide precipitate from a nickel-containing leach solution with impurities including one or more of the following: manganese, copper, zinc, iron and/or cobalt, so that the purified nickel hydr...  
WO/2009/039560
A micronutrient fertiliser comprising leach tailings from a sulphur dioxide leach process for the recovery of manganese or manganese sulphate products and a method for the production of such a micronutrient fertiliser, the method compris...  
WO/2009/039580
A process for producing a stable metal sulfate product including the steps of : a) providing a source of metal sulfate crystals; b) adding a sub-stoichiometric amount of a stabilising compound to the metal sulfate crystals to form a past...  
WO/2009/038962
The present invention relates generally to a process for controlled leaching and sequential recovery of two or more metals from metal-bearing materials. In one exemplary embodiment, recovery of metals from a leached metal-bearing materia...  
WO/2009/038963
The present invention relates generally to a process for removing dissolved or colloidal silica from a pregnant leach solution ("PLS"). More particularly, an exemplary embodiment of the present invention relates to a process which mixes ...  
WO/2009/033227
A process for the recovery of nickel and/or cobalt from a lateritic ore by heap leaching, the process including the steps of : a) forming one or more heaps from a lateritic ore body wherein that lateritic ore body includes a blend of bot...  
WO/2009/030811
The invention relates to a method for the preparation of a copper concentrate suitable for pyrometallurgical treatment from a concentrate in which zinc is present as an impurity. In accordance with the method, zinc is leached from the co...  
WO/2009/030894
A method for removing a metal from a metal-containing solution, the method comprising contacting the metal-containing solution with a metal-removing composition and recovering a solution having a lowered metal concentration when compared...  
WO/2009/029463
The membrane electrode assemblies of fuel cells are recycled by pulverizing the membrane electrode assemblies into a powder by cryo-grinding and contacting with acid to leach precious metals. Surfactants can optionally be used to increas...  
WO/2009/026683
The present invention refers to a hydro-metallurgical process using resin-in-neutralized-solution in heap leaching effluent. More specifically, the process is applicable to lateritic ore, nickel oxidate, cobalt oxidate or a mixture conta...  
WO/2009/026682
A hydrometallurgical resin-in-leach (RIL) process for directly recovering nickel and/or cobalt. Simultaneous pulp leaching by adding an acid or base, dissolves the metals of interest with adsorption of the metals rendered soluble in on i...  
WO/2009/023813
There rs provided a metals recover. s\ stem including at least one tank ha\ ing a top portion and a bottom portion, wherein the top portion has an inlet and sajd bottom portion has an outlet a process Quid cierh erv deuce in fluid commun...  
WO/2009/021389
A process of smelting monazite rare earth ore rich in Fe in particular comprises the following steps: mixing Fe-rich monazite rare earth ore containing 8-40% Fe with concentrated sulphuric acid and adding the mixture into a calcining kil...  
WO/2009/018695
An enriching and screening bauxite desulfurizing bacteria method, using acidic water from the mining pit in high sulfur ore regions, which comprises the following steps: adding 9 k non-iron inorganic salts to the collected acidic water f...  
WO/2009/019955
The object is to remove arsenic in a stable form from an arsenic-containing smelting intermediate product. Thus, disclosed is a method for treating an arsenic-containing nonferrous smelting intermediate product, which comprises: a leachi...  
WO/2009/018619
An atmospheric leach process in the recovery of nickel and cobalt from lateritic ores, said process including the steps of : a) providing limonitic and saprolitic ore fractions of a laterite ore; b) separately slurrying the limonitic and...  
WO/2009/017434
The invention relates to methods for recovering non-ferrous, rare, radioactive and precious metals from refractory mineral raw materials and can be used in production. The inventive method for recovering non-ferrous, rare, radioactive an...  
WO/2009/013142
The present invention relates to novel chelate resins comprising quaternary nitrogen atoms as a functional group in structures of the general formula (I), wherein at least one of the radicals R1 to R3 stands for an optionally substituted...  
WO/2009/013149
The invention relates to a method for producing novel chelate resins based on cross-linked perl polymers arising from (meth)acrylic compounds having aminomethyl groups and/or aminomethyl nitrogen heterocyclic groups as functional groups ...  
WO/2009/011073
In treating arsenic in the form of diarsenic trioxide, it is intended to provide a method which satisfies the elution standard (in accordance with Environmental Ministerial Announcement No.13) and by which scorodite showing a good filtra...  
WO/2009/009825
In accordance with the present invention there is provided a method for leaching one or more target metals from an ore, the method comprising the method steps of: curing the ore to be leached through the application of an aqueous solutio...  
WO/2009/011316
A method that in the treatment of arsenic contained in a nonferrous smelting intermediary product, especially treatment of copper-arsenic compounds in the form of an intermetallic compound, would produce stable scorodite excelling in fil...  
WO/2009/011317
A method that in the treatment of arsenic contained in a nonferrous smelting intermediary product, especially treatment of arsenic in the form of a sulfide, while satisfying the leaching standards (according to Environment Agency Notific...  
WO/2009/007792
A method of producing copper from a solution containing a copper (II) salt includes the steps of reducing at least some of the copper (II) salt to a copper (I) salt in a first reduction step, solubilising the copper (I) salt to produce a...  
WO/2009/003240
A method for controlling iron precipitation from acidic ferric sulphate leach solutions in leaching of chalcopyrite and/or pyrite, the method comprising the steps of: increasing the rate of formation of a ferric basic sulphate and/or pro...  
WO/2009/004321
A settler tank for a solution used as part of a process to extract metal from metal ore, the settler tank being dimensioned such that it may be transported by a conventional truck and trailer. A settler tank for an ore extraction process...  
WO/2009/004321
A settler tank for a solution used as part of a process to extract metal from metal ore, the settler tank being dimensioned such that it may be transported by a conventional truck and trailer. A settler tank for an ore extraction process...  
WO/2009/000037
A process for leaching an ore containing sulphidic copper-containing minerals is disclosed. The process includes carrying out an aerated oxidising leach of a part of the ore and causing reactions with a source of iron such as pyrite in t...  
WO/2009/001897
Disclosed is a novel separation reagent which has never exist before and can achieve a high extraction rate of rhodium in a chlorine-containing acid solution. Also disclosed is a method for the separation/collection of a platinum-group m...  
WO/2009/000051
A process for the recovery of magnesium from a solution containing soluble magnesium, the process comprising, precipitating magnesium hydroxide from the solution, forming an oxide blend including magnesium oxide derived from the precipit...  
WO/2008/141423
There are provided processes and compositions for extracting aluminum and/or iron ions from aluminous ores or a mixture. One process comprises recovering said aluminum ions from a composition comprising said aluminum ions, said iron ions...  
WO/2008/141443
A process for the extraction of a precious metal, such as gold or silver, from a sulphide ore or concentrate or other source material comprises subjecting the source material to pressure oxidation to produce a pressure oxidation slurry. ...  
WO/2008/139023
A pump comprising a body (1) that is a cylindrical vertical container (10), which is upwards open, its interior (2) being defined by a planar bottom (11) that comprises a central inlet (3), and by a first side wall (12) that comprises an...  
WO/2008/139430
The invention discloses a drainage system for an aerated heap leaching operation which comprises a layer of drainage rock (2) which includes a plurality of spaced apart substantially vertically orientated perforated tubes, preferably str...  
WO/2008/138038
A process for leaching nickel and/or cobalt containing laterite or partially oxidised laterite ore including the steps of : a) providing a laterite or partially oxidised laterite ore; b) leaching the ore in a leach step with an acid in t...  
WO/2008/139412
A method for producing a metal from a metal sulphide ore or mineral is claimed. The metal sulphide ore is leached by non-oxidative dissolution in a chloride solution to produce a metal chloride solution and hydrogen sulphide; the metal c...  
WO/2008/139430
The invention discloses a drainage system for an aerated heap leaching operation which comprises a layer of drainage rock (2) which includes a plurality of spaced apart substantially vertically orientated perforated tubes, preferably str...  
WO/2008/138039
A process for the recovery of nickel and/or cobalt from laterite or partially oxidised lateritic ores having a substantial proportion of the iron present in the ferrous state, said process including the steps of : a) providing a laterite...  
WO/2008/136542
Disclosed is a reactor for separating an aluminum layer from a multi-layer film wastes to reuse a multi-layer film waste without burying or incinerating the multi-layer film waste including the aluminum. The reactor comprises a cylindric...  
WO/2008/132830
Disclosed is a method for recovering a rare metal such as gallium or indium from a group III-V compound semiconductor or the like for recycling. Specifically disclosed is a method for recovering at least one metal selected from the group...  
WO/2008/128278
A method for the separation of nickel and iron from an acidic iron-containing nickel solution containing at least some dissolved iron in the ferric [Fe(III)] state comprises conducting a crude precipitation to precipitate some of the iro...  
WO/2008/128278
A method for the separation of nickel and iron from an acidic iron-containing nickel solution containing at least some dissolved iron in the ferric [Fe(III)] state comprises conducting a crude precipitation to precipitate some of the iro...  

Matches 651 - 700 out of 4,020