Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 201 - 250 out of 7,262

Document Document Title
WO/2013/177729A1
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/2013/177583A2
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/2013/173914A8
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/2013/173855A1
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/2013/173914A1
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/2013/176110A1
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/2013/171861A1
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/2013/170297A1
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/2013/170370A1
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/2013/171804A1
[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/2013/166585A1
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/2013/167714A1
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/2013/166789A8
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/2013/166789A1
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/2013/169540A1
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/2013/164429A1
The present invention provides an enzymatic method for dissolving metals in an aqueous composition.  
WO/2013/163712A1
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/2013/165735A1
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/2013/159194A1
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/2013/161599A1
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/2013/152423A1
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/2013/153521A3
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/2013/152424A1
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...  
WO/2013/150642A1
Provided is a method for efficiently recovering chromite from ore slurry obtained by processing nickel oxide ore, which is the raw material, in a plant for the wet smelting of nickel oxide ore. The present invention is a method for recov...  
WO/2013/151437A1
The invention relates to an E-waste demounting device for removing waste and for recovering useful materials, such as soldering material, from the E-waste object 7, the device comprising a reservoir 2 adapted to be filled a demounting li...  
WO/2013/151190A1
 [Problem] To collect tungsten from a tungsten-containing material to be treated by means of simple processing steps using microorganisms, and with a reduced environmental load and excellent efficiency. [Solution] A method for collec...  
WO/2013/145849A1
Silver and metal adsorbed by activated carbon are effectively eluted. A method for eluting silver and metal adsorbed by activated carbon, in which metal and silver are eluted from activated carbon that has adsorbed at least metal and sil...  
WO/2013/143271A1
A method for extracting and separating a rare-earth element. Cations and anions in a quaternary ammonium ionic liquid extractant, that is, 2-ethylhexyl phosphate mono-2-ethylhexyl acrylate trialkyl-ammonium and phosphate di(2-ethylhexyl)...  
WO/2013/145909A1
Provided is a method for producing nickel sulfate yielding high-purity nickel sulfate using a method for removing an impurity element to selectively remove Mg from a solution containing Ni. A process for producing nickel sulfate from an ...  
WO/2013/146391A1
The present invention is related to a method for separation and recovery of alkali metal in which raw water containing an alkali metal and a bivalent ion is permeably separated using a nanofiltration membrane to yield permeated water and...  
WO/2013/142957A1
There are provided processes for treating fly ash. For example, the processes can comprise leaching fly ash with HCI so as to obtain a Ieachate comprising aluminum ions and a solid, and separating the solid from the Ieachate; reacting th...  
WO/2013/146472A1
Recovery of multiple types of rare-earth elements from a raw material containing non-rare-earth elements is performed simply and at a lower cost. A rare-earth element recovery method for extracting specified rare-earth elements from a ra...  
WO/2013/145455A1
A method for recovering a rare-earth element is provided in which a bauxite residue containing a rare-earth element is used as a raw material and the rare-earth element in the bauxite residue can be efficiently recovered. The method for ...  
WO/2013/140900A1
Provided is a production method which enables the purification of hematite having a low sulfur component content from an iron-oxide-containing leach residue produced in an HPAL process to such an extent that the hematite can be used as a...  
WO/2013/140039A8
A method and arrangement for recovering lithium carbonate from a raw material containing lithium, which method comprises pulping (1) the raw material containing lithium in the presence of water and sodium carbonate for producing a slurry...  
WO/2013/140039A1
A method and arrangement for recovering lithium carbonate from a raw material containing lithium, which method comprises pulping (1) the raw material containing lithium in the presence of water and sodium carbonate for producing a slurry...  
WO/2013/142022A1
Molybdic oxide is recovered from molybdenite by a multistep process in which (A) the molybdenite is converted to soluble and insoluble molybdic oxide by pressure oxidation, (B) the insoluble molybdic oxide is converted to soluble molybdi...  
WO/2013/140836A1
Provided is a method for producing hematite for iron production, whereby high purity hematite, which can be used as a raw material for producing iron, is cheaply and efficiently recovered from leach residue containing iron oxide produced...  
WO/2013/140837A1
Provided is a production method for purifying iron oxide (hematite) with low sulfur content to an extent that allows the hematite to be used as a raw material for iron production, said hematite being recovered from leach residue containi...  
WO/2013/140379A3
The invention relates to a system and method for monitoring and controlling irrigation faults in leaching piles, comprising: a thermographic vision system and a visible spectrum vision system which capture images on areas of the leaching...  
WO/2013/138900A1
There are provided processes for recovering at least one rare earth element. Such processes comprise obtaining an acidic composition comprising (i) at least one rare earth element and optionally at least one rare metal; and reacting the ...  
WO/2013/136941A1
Provided is a method for selectively extracting and inexpensively recovering scandium from an acidic solution containing calcium, magnesium, and scandium. The scandium extraction method according to the present invention involves subject...  
WO/2013/133172A1
The purpose of the present invention is to provide a hydrometallurgical method for nickel oxide ore, in which the plant can be smoothly started after completion of a periodic inspection because zinc sulfide separation imposes no load on ...  
WO/2013/133173A1
The purpose of the present invention is to provide a hydrometallurgical method for nickel oxide ore, with which it is possible to improve the filtering characteristics in a dezincification step in which a neutralized liquid that contains...  
WO/2013/129130A1
The purpose of the present invention is to obtain rhenium with low-grade arsenic in a stable manner by separating and removing arsenic, as an impurity, in a stable state from raw materials containing rhenium and arsenic, and reducing the...  
WO/2013/128830A1
Provided is a metal recovery process which makes it possible to recover objective metal elements efficiently from tin slag or other slag generated in metal refining. This metal recovery process is a process which is to be employed in rec...  
WO/2013/128536A1
The present invention addresses the problem of separating with good efficiency the rare earths of La and Gd from optical glass waste. Carbon is added to pulverized optical glass waste and the mixture is subjected to reduction roasting in...  
WO/2013/129017A1
The purpose of the present invention is to recover, at a low cost and efficiently, gold adsorbed on activated carbon. A gold recovery method which includes a step of subjecting gold adsorbed on activated carbon to elution to obtain a con...  
WO/2013/124831A3
The invention relates to a complexing system for extracting a radionuclide from a waste solution comprising calix[n]arene groups immobilized on the surface of a porous conducting material.  
WO/2013/120132A1
A process for recovering zinc oxide from a zinc ore, the process including the steps of: leaching the zinc ore with an alkaline lixiviant comprising an aqueous mixture of NH3 and NH4Cl, or ionic equivalent, having a NH4Cl concentration o...  

Matches 201 - 250 out of 7,262