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Matches 101 - 150 out of 4,041

Document Document Title
WO/2014/030048
A process of extracting copper from copper sulphide minerals which is enhanced at solution potentials exceeding 700 mV SHE, in the absence of any microorganism, by contacting the minerals in a pre-treatment phase using an acid solution a...  
WO/2014/031382
A method of eluting metal ions from a bed of metal-loaded chelating resin wherein the resin includes a crosslinked styrene-divinylbenzene copolymer matrix with pendent methyleneaminopyridine or phosphonic acid groups and the method inclu...  
WO/2014/030395
Provided are an extraction agent and extraction method that selectively extract and, at a low cost, recover gallium from an acidic solution containing gallium and zinc. The gallium extraction agent comprises an amide derivative represent...  
WO/2014/029031
It is described a process for extracting magnesium from magnesium-bearing materials comprising the steps of leaching the magnesium-bearing material with HCl as to obtain a leachate comprising the magnesium in solution and a solid form; p...  
WO/2014/030877
Disclosed is a method for separating tin from a variety of combined metals and collecting same. The method for separating and collecting tin from the variety of combined metals according to the present invention, comprises: a leaching st...  
WO/2014/030396
Provided is a method that selectively extracts and, at a low cost, recovers indium from an acidic solution containing indium and gallium. The present invention is a method that is for isolating a valuable metal and that, by means of subj...  
WO/2014/030218
The purpose of the present invention is to improve the separation rate for specific transition metals. Provided is a flocculant that forms transition metal ions into aggregates by coordinate bonding, wherein the flocculant has a polymer ...  
WO/2014/029017
Nanofiltration can be used to improve a hydrometallurgical process in which valuable metal is extracted from ore or tailings by leaching with a suitable lixiviant. The process requires at least two nanofiltration subsystems in which raff...  
WO/2014/030394
Provided are an extraction agent and extraction method that selectively extract and, at a low cost, recover indium from an acidic solution containing indium and zinc. The indium extraction agent comprises an amide derivative represented ...  
WO/2014/026217
A process (10) for the treatment of a lithium containing material, the process comprising the steps of: (i) Preparing a process solution from the lithium containing material (12); (ii) Passing the process solution from step (i) to a seri...  
WO/2014/022946
The present invention relates to a hydrometallurgical method for leaching smelting dust with tricarboxylic acid solutions in four stages. The first stage includes leaching followed by a second stage of solid/liquid separation. The "liqui...  
WO/2014/023755
The present invention relates to a metal leach and recovery process. The process involves subjecting a metal bearing material to a reactive process by combining said metal bearing material with a leaching agent to liberate at least one m...  
WO/2014/022882
A method for recovering zinc from slag derived from lead smelting comprises subjecting the slag to a leaching step under conditions in which zinc is dissolved into solution and silica present in the slag dissolves and re-precipitates in ...  
WO/2014/025568
A system and method for recovering nickel from a mixed metal product liquor solution containing nickel and at least copper or iron including the steps of: (a) passing the product liquor solution through an ion exchange bed to load nickel...  
WO/2014/023092
A process for decomposing waste rare earth luminescent materials by two times of acidolysis comprises the following steps: firstly, red powders (Y2O3:Eu) in the waste rare earth luminescent materials are dissolved by hydrochloric acid pr...  
WO/2014/023464
Process and apparatus for winning at least one valuable metal oxide The invention relates to a process and an apparatus for winning at least one valuable metal oxide from a valuable ore mineral containing at least one insoluble valuable ...  
WO/2014/021119
In the present invention, the following are included: a step for adding an inorganic salt to an aqueous solution that contains Dy and at least one of Nd and Pr, and then stirring the same (an inorganic salt addition step); a step for add...  
WO/2014/021062
The present invention enables low-concentration hydrogen sulfide gas generated at the time of the regular inspection and starting up of a production plant to be efficiently recovered and effectively supplied to a treatment plant in which...  
WO/2014/021523
The present invention relates to a method for extracting lithium from a solution containing lithium. The present invention provides a method for extracting lithium from a solution containing lithium, comprising the steps of: separating a...  
WO/2014/013929
A method for recovering a rare earth element from a rare earth element-containing alloy, the method being characterized by eluting a rare earth element by electrolysis of a metal powder of a rare earth element-containing alloy. The prese...  
WO/2014/014379
The invention relates to metallurgy, in particular to acidic methods for producing alumina, and can be used in the processing of low-grade aluminium-containing stock. The method for producing alumina comprises burning the aluminium-co...  
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...  

Matches 101 - 150 out of 4,041