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Matches 51 - 100 out of 7,295

Document Document Title
WO/2014/174483A2
The invention relates to novel algae of the genus Coccomyxa, especially the algae of a novel species called C-IR3-4C, and to the use thereof for capturing metals from aqueous environments, especially radioactive environments.  
WO/2014/171370A1
The present invention extracts precious metals from an acidic solution containing precious metals in an early and highly efficient manner. Provided is an extraction agent for precious metals that is represented by the general formula bel...  
WO/2014/169827A1
Method for two-stage bioleaching of secondary copper sulfide ore, comprising the following steps: 1) feeding secondary copper sulfide ore, after crushing, to a leach pad to build a heap and performing the first stage of leaching, until 4...  
WO/2014/170863A1
This invention relates to a process for treating a resin that has been in contact with pregnant leach solution (PLS) containing ionic metal species such as uranium, copper, cobalt, nickel, gold, chrome, PGM's and Rare Earth Metals, and w...  
WO/2014/169325A1
A process for recovering copper, uranium and one or more precious metals from an ore material, including: a. forming a heap of the ore material; b. subjecting the heap of the ore material to an acidic heap leach using an iron containing ...  
WO/2014/168620A1
A method of recovering metals from a polymetallic mineral resource containing lead, zinc, and other metals, the method comprising flotation separating the polymetallic mineral resource while only suppressing the flotation of zinc and oth...  
WO/2014/168749A1
Recovering gold from gold-loaded fine carbon by application of thermo-kinetic chemical activation regime at a low temperature, while preventing vitrification of imputies found in the gold-loaded fine carbon.  
WO/2014/166484A4
The invention relates to a method for concentrating metals, in particular silver and/or tin and/or lead from scrap containing metal, by treating the material/scrap containing silver and/or tin and/or lead with a sulfonic acid of the form...  
WO/2014/168622A1
A method of recovering metal values from slag includes the steps of pulverizing the slag to particles less than about 100 μιη; leaching the pulverized slag with a solution of ammonium chloride, sodium chloride, and potassium chloride;...  
WO/2014/166484A1
The invention relates to a method for concentrating metals, in particular silver and/or tin and/or lead from scrap containing metal, by treating the material/scrap containing silver and/or tin and/or lead with a sulfonic acid of the form...  
WO/2014/167534A1
A recovery process includes contacting a powder comprising an admixture of yttrium oxide and europium oxide with an inorganic acid to form an acidic solution containing yttrium ions and europium ions. In a first multiple plate liquid-liq...  
WO/2014/156300A1
[Problem] To provide a simple, economic, and environment-friendly precious metal recovery method for recovering a precious metal from a used electronic device or the like. [Solution] A precious metal recovery method characterized in incl...  
WO/2014/154182A1
A method for converting and decomposing bastnaesite rare earth ore by calcinating same with a calcium compound and a masking agent, the method comprising: pulverizing the bastnaesite rare earth ore and adding calcium compound powder and ...  
WO/2014/153639A1
The invention provides a process for the leaching of a laterite ore or concentrate for the recovery of value metals, at least one value metal being nickel. The laterite ore or concentrate is subjected to a leaching step in acidic mixed c...  
WO/2014/156349A1
 This method for recovering gold from sulfide ore comprises: a first step in which a first acidic solution containing chlorine ions, copper ions, and iron ions but not containing bromine ions is brought into contact with a sulfide ore ...  
WO/2014/158043A1
The invention relates to regeneration of waste from refractory nickel superalloys containing rhenium. The method for recovery of components from the waste from nickel-containing superalloys comprises: treating the waste with hydrochloric...  
WO/2014/155855A1
Provided is a manufacturing method for hematite for steel manufacture in which conventional Ca based neutralizing agents and neutralizing agents, other than Ca-based ones, derived from base rock can be used in actual operations for refin...  
WO/2014/157225A1
[Problem] To provide: an adsorbent for a rare earth element, which is capable of easily adsorbing and recovering a rare earth element contained in an aqueous solution at low cost, and which is also capable of selectively adsorbing and re...  
WO/2014/156351A1
 This method for recovering gold from gold ore containing pyrite comprises: a pretreatment step which includes a first step in which gold ore containing pyrite is prepared and a second step in which the gold ore is heated to a temperat...  
WO/2014/158842A1
Systems and methods for basic leaching are provided. In various embodiments, a method is provided comprising leaching a slurry comprising a copper bearing material and an ammonia leach medium, adding copper powder to the slurry, separati...  
WO/2014/154407A1
The invention relates to a plant (16) and a process for separating metals, in particular rare earth metals. The plant comprises at least one extraction unit (2) by means of which the metals can be at least partly transferred from a solve...  
WO/2014/153672A1
Described is a method of recovering a metal from a substrate having a metal sulphide, metal oxide, or combination thereof, by contacting the substrate with an aqueous oxidant to oxidize the metal sulphide to elemental sulphur and oxidize...  
WO/2014/158844A1
Systems and methods for basic leaching are provided. In various embodiments, a method is provided comprising leaching a slurry comprising a copper bearing material and a leach medium comprising ammonia and ammonium carbonate, adding copp...  
WO/2014/156350A1
 This method for recovering gold from sulfide ore comprises: a first step in which sulfide ore or leach reside remaining after sulfide ore has been subjected to leaching is brought into contact with an acidic aqueous solution containin...  
WO/2014/148608A1
Provided are: a composition which exhibits low swelling properties, which comprises a hydrophilic polymer composition including an amine-based polymer, and which is stable in a wet state when packed into a column; a filter including the ...  
WO/2014/148945A1
The present invention relates to a method for producing rare-earth metals (REM) compounds by complex processing of apatite, in particularly to a method for concentrating rare-earth metals (REM) in phosphogypsum, where to a process of ...  
WO/2014/148431A1
Provided is a method for efficiently separating nickel, cobalt and/or scandium, and impurities from an acidic solution containing impurities such as manganese, iron, zinc, and aluminum. A valuable-metal extracting agent of the present in...  
WO/2014/148339A1
In order to selectively extract copper and/or lead from an acidic solution containing high concentrations of manganese, etc., the valuable-metal extracting agent of the present invention is expressed by general formula (1). In the formul...  
WO/2014/150710A1
Metal value recovery processes for the recovery of multiple metal values from metal-bearing materials are provided. Processes and methods provided may include the use of multiple leach stages, as well as multiple solvent extraction stage...  
WO/2014/148097A1
A method for the wet-smelting of nickel oxide ore by high pressure acid leach, wherein a high iron oxidation ratio is achieved in order to fix most of iron in a leach residue in the form of hematite, the amount of sulfuric acid used duri...  
WO/2014/138809A1
A post-treatment process (82) for the further removal of radionuclides from upgraded copper concentrate to produce a low emission copper concentrate, the upgraded copper concentrate resulting from treatment of a radioactive copper concen...  
WO/2014/139869A1
The invention relates to the use of compounds of general formula (I) hereinafter in which: R1 and R2 represent a linear or branched, saturated or unsaturated C6 to C12 hydrocarbon-based group; R3 represents H, a linear or branched, satur...  
WO/2014/140492A1
The present invention concerns a method for selectively recovering the rare earths from an aqueous acid sulphate solution comprising phosphates, aluminium and heavy rare earths, and possibly medium rare earths, iron (II) and titanium, ch...  
WO/2014/138808A1
A hydro-metallurgical method 80 for the removal of uranium, thorium, radium, lead, bismuth and polonium and/ or other radionuclides from a radioactive copper concentrate to produce an upgraded copper concentrate having lowered emission l...  
WO/2014/144614A3
A solvent extraction composition that is particularly useful for the extraction of metals from a solution containing the metals. The solvent extraction composition includes an orthohydroxyaryloxime extractant, at least one water immiscib...  
WO/2014/137240A1
The present invention relates to a method for complex processing of apatite concentrate resulting in producing concentrate of rare earth metals (REM) and plaster from phosphogypsum, a waste of sulphuric acid technology for producing p...  
WO/2014/137238A1
The present invention relates to a method for recovery of rare earth metals (REM) from diluted aqueous acidic solutions comprising steps of liquid-phase extraction of REM into an organic phase and re-extraction of REM from the organic...  
WO/2014/134681A1
A method of recovering copper and other metals from fine and low grade fractions of oxide or oxide/sulphide mixes utilises fine fractions to prepare a pulp, adjusting the pH of the pulp, leaching the metal ions from the pulp, absorbing t...  
WO/2014/134708A1
There is provided a method of recovering at least one target metal which is adhered to a stainless steel surface, while mitigating corrosion to the stainless steel surface. The target metal is nickel or cobalt. The method comprises conta...  
WO/2014/137239A1
The present invention relates to a method for complex processing of apatite concentrate resulting in producing concentrate of rare earth metals (REM) and plaster from phosphogypsum, a waste of sulphuric acid technology for producing p...  
WO/2014/131401A9
The present invention relates to a hydrometallurgical process for recovery of metals and/or semimetals from waste materials, such as high-tech or green-tech wastes, and/or electrical and electronic waste containing compound semiconductor...  
WO/2014/132458A1
Provided is a method for leaching gold from gold ore containing pyrite. Said method for leaching gold includes a pretreatment step that includes a step (1) in which gold ore containing pyrite is prepared, and a step (2) in which the gold...  
WO/2014/132419A1
In order to adsorb gold contained in metal sulfide ores on activated carbon with good efficiency, and to efficiently elute gold and silver adsorbed on the activated carbon, this method for eluting gold and silver is provided with: a step...  
WO/2014/131401A4
The present invention relates to a hydrometallurgical process for recovery of metals and/or semimetals from waste materials, such as high-tech or green-tech wastes, and/or electrical and electronic waste containing compound semiconductor...  
WO/2014/131401A3
The present invention relates to a hydrometallurgical process for recovery of metals and/or semimetals from waste materials, such as high-tech or green-tech wastes, and/or electrical and electronic waste containing compound semiconductor...  
WO/2014/131401A2
The present invention relates to a hydrometallurgical process for recovery of metals and/or semimetals from waste materials, such as high-tech or green-tech wastes, and/or electrical and electronic waste containing compound semiconductor...  
WO/2014/125266A1
A method for recovering lead from lead glass, the method including the steps of: forming a mixture comprising the lead glass, water and a base such as sodium hydroxide; agitating the mixture by steam sparging and ultrasonic agitation to ...  
WO/2014/125558A1
Provided is a wet-mode smelting method for collecting nickel (Ni) from a Ni oxide ore employing a high-pressure acid leaching process, in which the abrasion of a facility by an ore slurry can be prevented, the amount of a final neutraliz...  
WO/2014/122803A1
A method for leaching gold from a gold ore containing pyrite, in which the gold leaching rate is improved without requiring the use of a highly toxic chemical substance such as cyan, thiourea, thiosulfuric acid and a halogen gas. A metho...  
WO/2014/122363A1
The present invention relates to a method and an arrangement for pressure and temperature let down of autoclave discharge slurry, in particular in pressure oxidation or high pressure acid leach of metal containing ore. The method of the ...  

Matches 51 - 100 out of 7,295