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Matches 201 - 250 out of 7,079

Document Document Title
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...  
WO/2013/120131A1
A process for the production of a high grade nickel product including the steps of: a) providing at least one heap of a nickeliferous lateritic ore and leaching that heap with a suitable lixiviant, preferably sulfuric acid solution, to p...  
WO/2013/118300A1
The purpose of the present invention is to provide a method for recovering lithium, which is capable of efficiently recovering lithium that does not contain impurities such as phosphorus and fluorine from a lithium-containing solution th...  
WO/2013/118695A1
Provided is a method for separating a heavy metal from a glass with high efficiency and at low cost. The present invention provides a method for separating a heavy metal from a glass containing a heavy metal oxide and a silica, comprisin...  
WO/2013/113132A3
The invention relates to bacterial strains isolated from Acidithiobacillus, which can bio-leach mineral sulphides at low temperatures. Said strains can grow at temperatures of between 5 and 10 °C and can adhere to solid supports, separa...  
WO/2013/114621A1
The objective of the present invention is to provide a lithium recovery method able to efficiently recover lithium not containing impurities such as phosphorus or fluorine. In the present invention, in a step for recovering valuable meta...  
WO/2013/110419A1
In a delignification of pulp with hydrogen peroxide catalysed with molybdate, molybdate can be recovered by bringing the aqueous solution containing molybdate into contact with a carrier material that comprises a layered silicate ion-exc...  
WO/2013/107937A1
The invention relates to an apparatus for separating one or more compounds from and/or for reducing the content of one or more compounds in a source material by extraction, the apparatus comprising devices for measuring the pressure, dev...  
WO/2013/108478A1
The purpose of the present invention is to efficiently recover gold in metal sulfide ores at low cost. This gold recovery method uses an acidic leaching solution including a chloride ion and/or a bromide ion as an anion and copper and ir...  
WO/2013/108645A1
The purpose of the present invention is to provide: a hydrogen sulfide gas production plant capable of recovering discharged waste hydrogen sulfide gas and efficiently supplying same to a treatment plant that performs treatment by using ...  
WO/2013/105454A1
A standing water column (20), which has a lower part that communicates with a liquid phase space and an upper part that communicates with a gas phase space inside a flash vessel (10), is provided to the flash vessel (10). A rise in the l...  
WO/2013/104059A1
There are provided processes for treating red mud. For example, the processes can comprise leaching red mud with HCl so as to obtain a leachate comprising ions of a first metal (for example aluminum) and a solid, and separating said soli...  
WO/2013/104045A1
A method for selectively processing a polymetallic oxide solution containing a plurality of base metals comprising at least one of: Cu, Co, Ni, Zn associated with iron, comprising acid leaching the solution; recovering a filtered leachat...  
WO/2013/105453A1
If the height from a slurry outlet (4) of a flash vessel (10) to a managed liquid level position (S) is denoted as H1, the height from the managed liquid level position (S) to the top of the flash vessel tower is denoted as H2, and the d...  
WO/2013/105291A1
High-purity manganese having a purity of 3 N (99.9%) or more, and characterized in that non-metal inclusions each having a size of 0.5 μm or more are contained at a density of 50000 particles or less per 1 g of the manganese. A method f...  
WO/2013/103099A1
A method for separating and recovering a plurality of rare-earth elements, wherein the method comprises: a step for introducing into a liquid a mixture of a rare-earth oxychloride and rare-earth oxychloride, the rare-earth oxychloride co...  
WO/2013/100626A1
The present invention relates to a method for recovering ferronickel from nickel ore, comprising: a reduction step consisting of slurrying the reduced powders obtained by reducing nickel ore using a hydrogen-containing reducing gas, in a...  
WO/2013/100823A3
The invention relates to the field of recycling industrial waste and to the field of environmental protection and can be used in the chemical industry, in the production of building materials, and also in other production areas associ...  
WO/2013/096070A1
Various embodiments provide a process roasting a metal bearing material under oxidizing conditions to produce an oxidized metal bearing material, roasting the oxidized metal bearing material under reducing conditions to produce a roasted...  

Matches 201 - 250 out of 7,079