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Matches 51 - 100 out of 7,271

Document Document Title
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/2014/131401A3
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 ...  
WO/2014/119793A1
The present invention addresses the issues of providing: a novel separation method whereby metallic silver is separated from an aqueous phase, etc.; and a method whereby the form of the metallic silver to be extracted is controllable, wh...  
WO/2014/118436A1
The invention relates to a method for recovering metals from oxidic ores by hydrometallurgical methods. In the method, the oxidic ore is contacted with water under conditions in which the metal is released from the ore in water, and the ...  
WO/2014/118288A1
The present invention relates to a process for the selective back-extraction of scandium with respect to thorium and/or zirconium and/or titanium dissolved in an organic solution based on a primary alkyl amine, characterized in that it c...  
WO/2014/114746A1
We propose a method for recovering iron from ferric sulphate solutions, obtained from leaching of metal bearing materials with sulphuric acid to produce an iron bearing leach solution, in the form of oxide as a useful product by precipit...  
WO/2014/114752A1
We propose a method of removing iron from leach solutions, obtained by leaching of metal bearing materials with acids, in the form of hydroxide and/or oxide by precipitation. The advantages with the method according to the invention incl...  
WO/2014/112248A1
Provided is a method with which, in a solid-liquid-separation processing method for separating and removing solid content in a slurry while performing multi-stage cleaning of the slurry, the clarity of an obtained supernatant liquid can ...  
WO/2014/112637A1
The purpose of the present invention is to make it possible to easily concentrate a metal of a metal-ion-containing solution at a high efficiency and recover the metal from the metal-ion-containing solution at a high recovery efficiency....  
WO/2014/107814A1
The present application discloses metallophores that complex soluble gold and generate solid gold forms, including gold nanoparticles. In an embodiment, the metallophores are microbial metabolites isolated from organisms that are resista...  
WO/2014/110518A1
A method of extracting targeted metallic minerals from ores that contain sulfide metallic minerals along with oxide minerals, carbonate minerals, silicate minerals, halide minerals or combinations thereof. In the method, an ore slurry co...  
WO/2014/109161A1
When starting up a dezincification plant used in a hydrometallurgical dezincification process for nickel, reduction in production quantity can be inhibited by suppressing reduction in throughput in the dezincification plant, and filtrati...  
WO/2014/106683A1
The present invention relates to a method and an arrangement for pressure and temperature let down of autoclave discharge slurry (106), in particular in pressure oxidation or high pressure acid leach of metal containing ore. The method o...  
WO/2014/107394A1
A method leaches metal sulphide ores to form a metal-bearing material. Sulfide ores, such as copper or gold ores, are contacted with a leaching solution containing industrial enzymes comprising cupredoxins such as amicyanin, plastocyanin...  
WO/2014/105679A1
A leaching promoter is utilized during the heap leaching of sulphide ores. The promoter contains a sulfide/ferrous oxidizing bacteria and a sulfide/ferrous oxidizing promoting material comprising at least one of (i) quorum sensing molecu...  
WO/2014/103397A1
Provided is a method that enables high-purity perrhenic acid to be produced from crude rhenium sulfide using a dry process. This method for producing an aqueous solution of perrhenic acid includes: 1) a step in which roasting is performe...  
WO/2014/100910A1
The invention relates to the use of oxygenated or polyoxygenated weak acids, or minerals or compounds that generate same, or solid or liquid waste from plants that produce oxygenated or polyoxygenated weak acids and derivatives thereof, ...  
WO/2014/103398A1
Provided is a method that enables high-purity perrhenic acid to be produced from crude rhenium sulfide using a dry process. This method for producing an aqueous solution of perrhenic acid includes: 1) a step in which a first roasting is ...  
WO/2014/104920A1
The invention relates to metallurgy, in particular, acid methods for producing alumina, and can be used for processing a low grade aluminium-containing raw material. The method for producing alumina comprises treating aluminium-contai...  
WO/2014/094037A1
A method for producing a solid scandium-containing material comprises providing an aqueous solution containing carbonate ions, carbamate ions, hydrogen carbonate (HC03 +) ions, or mixtures thereof, contacting the aqueous solution with a ...  
WO/2014/096550A1
The invention relates to a method of recovering energy and water from pressure oxidation flash steam comprising a step wherein a first flash steam directly obtained from a flash vessel is contacted with a first recirculating condensate h...  
WO/2014/096545A1
The invention relates to a method for leaching the metals while granulating molten matte, comprising the steps of feeding a molten matte as a falling stream into a granulation chamber (30), spraying a liquid jet on the stream of molten m...  
WO/2014/094130A1
A product is provided for binding heavy metals in. Specifically, the substance is a derivative of graphite, namely graphene oxide nano-platelets (GO). In another embodiment of the present invention, a product comprising GO grafted with m...  
WO/2014/094091A1
The present invention relates to a method and apparatus for bioleaching primary ores containing copper, nickel, zinc, cobalt, molybdenum, uranium, precious metals, flotation wastes from the production of sulfide concentrates of said meta...  
WO/2014/094045A1
A mobile ore slurrying apparatus (10) comprising: A feeding unit (12); a processing unit (14); and a pumping apparatus (16), wherein the processing unit (14) is separated into a slurry tank section (30) and a water tank section (32), suc...  

Matches 51 - 100 out of 7,271