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Matches 51 - 100 out of 7,312

Document Document Title
WO/2014/198690A1
The invention relates to a method for recovering at least one metal present within a material, said material possibly including iron, said method including a step of supplying a ferrous ion, a step of supplying a ferric ion, and a step o...  
WO/2014/195586A1
The present invention relates to a method of recovering copper and one or more precious metals from copper-bearing sulfide ore or concentrate comprising leaching copper-bearing ore and/or concentrate under atmospheric or slightly pressur...  
WO/2014/191833A1
The disclosure relates to the oxidation and immobilization of trivalent arsenic from arsenic-containing solutions. The process includes oxidation of trivalent arsenic (As3+) species to the pentavalent state (As5+). A carbon additive (e.g...  
WO/2014/190434A1
A method for purification and separation of mixed elements, comprising at least a first free flow electrophoresis separation chamber, wherein a solution of the mixed elements is passed through the first separation chamber, an electric fi...  
WO/2014/193253A1
We disclose a process of obtaining a highly concentrated and purified nickel (II) nitrate(V) solution from a waste nickel solution containing sulphates and/or chlorides. Multicomponent solutions, containing nickel, are used as a substrat...  
WO/2014/191832A1
The disclosure relates to pre-treatment of precious metal-bearing oxide ores, prior to precious metal leaching by thiosulfate. The process comprises mixing oxide ore in oxygenated water in the presence of a carbon-based material (e.g., a...  
WO/2014/193751A1
An apparatus and/or system and method for recycling vent gas from an autoclave (103) is disclosed including cooling and cleaning a vent gas, introducing the cooled and cleaned resultant stream into a purification unit (109) to remove at ...  
WO/2014/188077A1
The invention relates to a method and apparatus for recovering metals from metalliferous starting materials comprising steps of i) leaching the metalliferous starting material in chloride-based leaching liquor, ii) withdrawing from the l...  
WO/2014/188158A1
A process of forming a porous polymer template material for use in selectively recovering a metal from a solution of the metal ions comprises polymerising a monomer admixed with a compound of the metal to be recovered, and then treating ...  
WO/2014/183511A1
A method for processing vanadium-titanium magnetite finished ores by using a wet process. The method comprises the steps: extracting vanadium from vanadium-titanium magnetite finished ores and processing, by using the vanadium extraction...  
WO/2014/177765A1
The invention relates to a method for preparing a gold- containing solution by chloride leaching from gold-bearing raw materials. A further object of the invention is to provide a method for recovering gold and optionally silver from the...  
WO/2014/178586A1
The present invention relates to a method for recovering an acid and a platinum group metal from a leaching solution of a waste catalyst and, more particularly, to a method for recovering an acid and a platinum group metal from a leachin...  
WO/2014/177903A1
The invention relates to a method for bioleaching and solvent extraction with selective recovery of copper and zinc from polymetal concentrates of sulfides, comprising a process of bioleaching and reduction of ferric ion and a process of...  
WO/2014/175218A1
The present invention provides a method for collecting a valuable metal, which enables a medium- to high-concentration cyan waste fluid to be treated at low cost and in a simple manner, and also enables a so-called valuable metal, e.g., ...  
WO/2014/175093A1
Provided is a hydrometallurgy method that is for nickel oxide ore, increases the durability of the production equipment in the method for hydrometallurgy of a nickel oxide ore by means of a high-pressure acid leaching method, involves si...  
WO/2014/175094A1
Proposed is a method for separating a leaching residue from which can be obtained a hematite-containing material that can be used as a starting material for iron manufacturing, and provided is a production method that, from the leaching ...  
WO/2014/174483A3
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/2014/174483A2
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...  

Matches 51 - 100 out of 7,312