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Matches 51 - 100 out of 3,911

Document Document Title
WO/2014/014380
The invention relates to the metallurgical industry, specifically to the acid treatment of red mud obtained in the process of producing alumina, and can be used in technologies for recycling waste from alumina refinery holding ponds. The...  
WO/2014/013092
The invention is based on the recirculation of a solution containing no, or a low content of, iron, such that the final acidity conditions achieved are suitable for obtaining efficient precipitation of iron in the form of jarosite. In on...  
WO/2014/008586
There are provided processes for preparing various products from various materials. For example, such processes are effective for extracting titanium and various other metals from various materials, thereby allowing for preparing product...  
WO/2014/009769
Method (1) of processing an iron ore (3) containing phosphorus, the iron ore having a gangue, the method comprising the steps consisting in: - mixing (A) the iron ore with at least one alkaline additive (7) able to react with the gangue ...  
WO/2014/009928
This invention relates to a hydrometallurgical process for extracting platinum group metals (PGMs), gold, silver and base metals from a flotation concentrate (10) containing sulphide minerals such as pentlandite and chalcopyrite, along w...  
WO/2014/008540
A method (10) for the recovery of nickel and other metals from nickel bearing sulphide ores, nickel bearing sulphide concentrates, and nickel sulphide metallurgical waste (12) is described. The method (10) comprises the steps of i) addin...  
WO/2014/006196
A method for reducing hexavalent chromium in oxidic solids containing the steps: a) mixing the oxidic solid, containing Cr(VI), with a carbon-containing liquid compound in the range of 20 to 100°C; b) treating the mixture obtained accor...  
WO/2014/005889
Method for centrifugal reprocessing of a solids-containing emulsion formed during the hydrometallurgical recovery of a metal, wherein the reprocessing takes place in at least one decanter (1) forming a first lighter liquid phase (5), a s...  
WO/2014/001620
A solvent extraction settler arrangement comprising a mixing unit (1) for preparing a dispersion from mutually immiscible solutions and a settler (2) having a feed end (3) and a discharge end (4). The settler is arranged to separate solu...  
WO/2014/000021
In accordance with the present invention there is provided a method for leaching zinc from an ore, the method comprising the method steps of: curing the zinc silicate ore to be leached through the application of an aqueous solution of a ...  
WO/2014/001619
A solvent extraction settler (1) comprising a foundation (2). The solvent extraction settler (1) comprises self-supporting modules (3) each having the exterior dimensions, strength and corner fittings (4) conforming to shipping container...  
WO/2014/001623
A solvent extraction method for hydrometallurgical liquid-liquid extraction processes, in which method solution phases are separated from a dispersion while the dispersion flows horizontally in a settler from a feed end to a discharge en...  
WO/2014/001622
A solvent extraction settler arrangement comprises a settler (1) having a feed end (2) and a discharge end (3), said settler being arranged to separate solution phases from a dispersion fed from the feed end while the dispersion flows to...  
WO/2014/001621
A method of manufacturing a launder (1) to be used in co-operation with a solvent extraction settler (2) comprises manufacturing at the site of manufacture, such as in an engineering workshop, a plurality of self-supporting launder eleme...  
WO/2014/001625
A method of manufacturing a solvent extraction settler comprises manufacturing at the site of manufacture, such as in an engineering workshop, a plurality of self-supporting settler element modules (2, 3, 4, 5) each having exterior dimen...  
WO/2014/000055
A process for isolating valuable products from low value waste including the steps of: (i)(a) leaching the low value waste, to form a leachate; (i)(b) filtering the leachate to produce a first filtrate and a first residue; (ii) carbonati...  
WO/2014/000023
A method for recovering cobalt from an oxidised cobalt-containing ore, the method comprising the steps of: Applying to the oxidised cobalt-containing ore an aqueous solution of a cobalt reducing agent at a pressure of between about atmos...  
WO/2013/191269
An activated carbon for adsorbing a noble metal from an aqueous solution containing a noble metal, wherein the difference (absolute value) between the zeta-potential in a 10-mmol/L aqueous solution of sodium tetraborate, and the zeta-pot...  
WO/2013/191781
Processes, systems, and methods for selectively regenerating an ion exchange resin generally comprises washing the ion exchange resin with an elution agent that encourages only selected contaminants, and especially selected radioactive i...  
WO/2013/190879
The purpose of the present invention is to provide a method for separating and refining scandium, the method being capable of improving stripping and efficiently separating and refining scandium from a scandium-containing solution while ...  
WO/2013/191020
The purpose of the present invention is to facilitate mixing of a raw material slurry with a sulfuric acid during a high-pressure acid leaching process in order to reduce a management value of a discharged free fluoric acid concentration...  
WO/2013/188922
A process for the removal of ferric iron as hematite from a nickel solution containing ferric and ferrous ions including the steps of: iv) raising the temperature of the nickel solution to between 90°C and the boiling point of the solut...  
WO/2013/191780
Submersible media filters and submersible columns for use in removing radioactive isotopes and other contaminants from a fluid stream, such as a fluid stream from the primary coolant loop of a nuclear reactor system or a fluid stream fro...  
WO/2013/187367
The purpose of the present invention is to provide a neutralization method which attains a reduction in the amount of a costly, highly alkaline neutralizing agent to be used and renders efficient neutralization possible, when a barren li...  
WO/2013/181724
It is described a process to use ferric sulphate equilibrium to reduce overall acid consumption and iron extraction, the process comprising the steps of: (i) sulphating; (ii) selective pyrolysis and (iii) selective dissolution.  
WO/2013/181724
It is described a process to use ferric sulphate equilibrium to reduce overall acid consumption and iron extraction, the process comprising the steps of: (i) sulphating; (ii) selective pyrolysis and (iii) selective dissolution.  
WO/2013/185002
A method of separating one or more valuable metal cations from an ionic solution by (a) contacting the ionic solution with an activated photoisomerizable host molecule containing a photoisomerizable moiety and a host moiety, where the ph...  
WO/2013/177680
There are provided methods for preparing lithium carbonate. For example, such methods can comprise reacting an aqueous composition comprising lithium hydroxide with CO2 by sparging the CO2 the said composition, thereby obtaining a precip...  
WO/2013/177729
Disclosed is a method for separating a rare-earth by coupled recycling of materials. The method comprises: using an organic phase prepared by mixing an extractant and a rare-earth soap stock and loaded with the rare-earth for a subsequen...  
WO/2013/177583
The invention generally relates to a system and method for selectively removing metals from a metal containing substance, and more particularly to a method and system for selectively extracting metals from fly ash with one or more of an ...  
WO/2013/173914
Methods are provided for precipitating arsenic from an acidic sulphate copper leach solution as a stable scorodite precipitate prior to any refining steps. The method utilizes pyrite or chalcopyrite in the leach train as the primary sour...  
WO/2013/173855
A process of leaching a metal containing ore comprising the steps of forming an acidic solution containing ferric iron; and contacting the acidic solution containing ferric iron with the metal containing ore to extract elements by oxidat...  
WO/2013/173914
Methods are provided for precipitating arsenic from an acidic sulphate copper leach solution as a stable scorodite precipitate prior to any refining steps. The method utilizes pyrite or chalcopyrite in the leach train as the primary sour...  
WO/2013/176110
The present invention pertains to a method and apparatus for removing and recovering, as copper oxide, copper from a copper-containing acidic waste liquids, which contain copper ions in high concentration, said copper-containing acidic w...  
WO/2013/171861
The present invention provides an extraction solvent for extracting metallic elements that is characterized in that: the total concentration of chlorine (Cl2) and hypochlorous acid (HOCl) is from 20 to 1000 ppm; chlorine (Cl2) and hypoch...  
WO/2013/170297
A method of adaptation of a bacterial culture, the method comprising the method steps of: Exposing the bacterial culture to increasing levels of pH over a period of time. A leaching process is also described.  
WO/2013/170370
There are provided processes for recovering at least one rare earth element and/or at least one rare metal from at least one material. The processes can comprise: leaching the at least one material with at least one acid having a low con...  
WO/2013/171804
[Problem] To provide a uranium solvent extraction method capable of collecting uranium from a low concentration uranium exudate using a countercurrent extraction tower. [Solution] The uranium solvent extraction method comprises a process...  
WO/2013/166585
The present disclosure provides uses and methods for using compositions comprising a tetrabrachion protein from Staphylothermus marinus or a fragment thereof for detecting and/or recovering a chemical element from a solution or a suspens...  
WO/2013/167714
The cost of precious metals, such as gold, makes recovery or recycling of these materials economically viable and desirable. Disclosed herein is a method of recovering gold from waste sources thereof, in particular waste electrical goods...  
WO/2013/166789
Disclosed are a cadmium removing process in zinc-containing solution purification with better cadmium removing effect and a purification method of zinc-containing solution with desired purification effect. The cadmium removing process in...  
WO/2013/169540
The present invention provides a method and system for separating phases of a liquid mixture or dispersion from each other. The system includes a settler system, which includes a coalescing-enhancing plate comprising a front face and rea...  
WO/2013/164429
The present invention provides an enzymatic method for dissolving metals in an aqueous composition.  
WO/2013/163712
The present invention discloses a new process for leaching sulfide minerals consisting of leaching crushed ore in a vat reactor, wherein the leaching solution is fed with an ORP value close to the upper limit suitable for leaching and th...  
WO/2013/165735
A method for recovering nickel and cobalt from a product liquor solution by processing the product liquor solution through a continuous ion exchange process including a plurality of ion exchange beds containing nickel selective ion excha...  
WO/2013/159194
There are provided methods for preparing lithium hydroxide. For example, such methods can comprise submitting an aqueous composition comprising a lithium compound to an electrolysis under conditions suitable for converting at least a por...  
WO/2013/161599
An autoclave (100) of a high pressure acid leaching process in which heated and pressurized starting material slurry and sulfuric acid are stirred by stirrers (30A, 30B...) provided in respective divided chambers (20A, 20B...) in an auto...  
WO/2013/152423
A process for the extraction of rare earth elements, including yttrium, from a rare earth element-bearing ore or concentrate, comprising the steps of leaching the rare earth element-bearing ore or concentrate with a lixiviant of hydrochl...  
WO/2013/153521
The present invention relates to a process for recovering non-ferrous metals from a solid matrix comprising the following phases: (a) leaching the solid matrix with an aqueous-based solution containing chloride ions and ammonium ions and...  
WO/2013/152424
A process for the extraction of gold from a gold-bearing ore or concentrate, comprising the steps of leaching the gold-bearing ore or concentrate with a lixiviant of hydrochloric acid and magnesium chloride at atmospheric pressure at a t...  

Matches 51 - 100 out of 3,911