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Matches 551 - 600 out of 7,262

Document Document Title
WO/2011/012579A1
The invention relates to the use of a diglycolamide to increase the separation factor between americium and curium and/or between lanthanides during an extraction operation including contacting an acidic aqueous phase, which contains ame...  
WO/2011/012563A1
The invention relates to a method for selectively recovering americium from an aqueous nitric phase containing americium, curium, and fission products including lanthanides and yttrium, but free of uranium, plutonium and neptunium, or wh...  
WO/2011/010289A3
This invention relates to a process for the recovery of precious metal/s from a precious metal-containing material in an aqueous leach slurry or solution. The process includes the step of contacting the precious metal/s in the leach slur...  
WO/2011/010289A2
This invention relates to a process for the recovery of precious metal/s from a precious metal-containing material in an aqueous leach slurry or solution. The process includes the step of contacting the precious metal/s in the leach slur...  
WO/2011/006223A1
A method for recovering base metal values from oxide ore is provided, where the ore includes a first group metal selected from nickel, cobalt and copper. The method includes reducing ore particle size to suit the latter unit operation, f...  
WO/2011/008137A3
The invention relates to methods for extracting rare earth elements, in particular from phosphogypsum. The proposed method involves the acid extraction of rare earth element compounds from phosphogypsum using a solution consisting of a m...  
WO/2011/005736A2
Provided herein are processes for recovering molybdenum and/or other value metals (e.g., uranium) present in aqueous solutions from a large range of concentrations: from ppm to grams per liter via a solvent extraction process by extracti...  
WO/2011/005736A3
Provided herein are processes for recovering molybdenum and/or other value metals (e.g., uranium) present in aqueous solutions from a large range of concentrations: from ppm to grams per liter via a solvent extraction process by extracti...  
WO/2011/000051A1
A method of recovering gold from a gold containing source material comprising: forming a molten pool comprising at least one metal selected from the group consisting of copper, silver, gold and platinum group metals; and adding at least ...  
WO/2010/149841A1
The invention relates to a method for leaching bulk concentrate of chalcopyrite-type by means of an aqueous solution containing sulphuric acid and an oxygen feed at atmospheric pressure and at a temperature between 750C and the boiling p...  
WO/2010/146596A1
A process for producing high grade blast furnace feed from poor grade iron ore ultra fines consists of processing ultra fines by selective dispersion to separate gangue materials from settled material iron and processing settled material...  
WO/2010/146876A1
Provided is a method comprising a step (i) in which voltage is applied between a first and second electrode (21 and 22), positioned to be in contact with an ion-conductive material, such that the first electrode (21) becomes a cathode. T...  
WO/2010/143623A1
A method for water and metal recovery from a plating wastewater resulting from washing is disclosed with which water and metals are efficiently recovered from the plating wastewater, the method comprising an iron insolubilization step in...  
WO/2010/142841A1
The invention relates to a method and apparatus for restoring the extractive potential of organic hydroxyoxime-based extraction solution used in the recovery of metals by liquid-liquid extraction. The method is two-stage, in which an aqu...  
WO/2010/144435A3
A right angle gearbox is described that includes an enclosure, an input member, an output member, and an assembly. The enclosure has dimensions such that the gearbox is operable as a drop in replacement for a gearbox that includes a worm...  
WO/2010/140701A1
Disclosed is a method for metal recovery using plants. The aforementioned metal recovery method involves bringing protonemata from moss plants belonging to the family Funariaceae into contact with a metal-containing solution in which is ...  
WO/2010/135776A1
A method for leaching one or more target metals from a sulfide ore and/or concentrate containing such, the method comprising the steps of: (a) Exposing the ore and/or concentrate to an aqueous solution of chlorine-based oxidising species...  
WO/2010/138094A1
The invention relates to a method and devices for extracting gold from placer deposits and ores. According to the present invention, a gold-containing pulp is prepared using an absorbent prepared from liquid hydrocarbons, wherein the den...  
WO/2010/135819A1
The invention provides, in part, a process for extracting nickel from a source material including iron and nickel, by contacting the source material (e.g, an ultramafic ore) with an aqueous ammonia solution containing an iron-complexing ...  
WO/2010/131686A1
Provided is a scorodite-type iron-arsenic compound having good filtration performance that satisfies the criteria for elution tests (initial pH of 5.8 to 6.3) in accordance with Japanese laws and ordinances (Ministry of the Environment B...  
WO/2010/126593A1
A method involves mixing with an aqueous medium a metal-bearing ore and/or other raw source material containing a first metal in an insoluble form, a Cr bearing material as a second metal, and other compounds to obtain a slurry containin...  
WO/2010/125205A1
The subject matter of the present invention relates to the production of a solution of ferrous sulphate, in aqueous acid medium the raw material being the ash obtained in the production of sulphuric acid by means of roasting of pyrites. ...  
WO/2010/121329A1
An improved method for recovering refractory gold from a material comprising treating the material to at least partially remove nitric acid-insoluble lead moieties.  
WO/2010/121318A1
A method is disclosed for recovering precious metals from source materials containing precious metals which involves leaching the source material in aqueous reducing liquor to provide a treated solid residue and processing the treated re...  
WO/2010/121317A1
The invention involves a method for recovering gold from a gold concentrate comprising: dissolving gold from the concentrate in an aqueous liquor to provide a gold liquor; subjecting the gold liquor to electrolysis in an electrowinning c...  
WO/2010/120405A1
Various embodiments provide new methods of rhenium recovery The methods can include subjecting a metal-bearing solution to an activated carbon bed, and adsorbing rhenium onto the activated carbon. The methods can also include heating a b...  
WO/2010/118455A1
A method for the treatment of mixed hydroxide product (MHP) (10) produced in a metal extraction process such as a nickel extraction process. The method comprises the steps of treating the MHP (10) with a first acid solution (12) at a pH ...  
WO/2010/116167A1
The present invention relates to a process for dissolving metals in perhalide containing ionic liquids, and to the extraction of metals from mineral ores; the remediation of materials contaminated with heavy, toxic or radioactive metals;...  
WO/2010/111548A2
In one embodiment, this invention is directed to a method of recovering metals from a metals bearing material comprising: reducing the particle size of at least a portion of the metals bearing material; mixing the metals bearing material...  
WO/2010/111548A3
In one embodiment, this invention is directed to a method of recovering metals from a metals bearing material comprising: reducing the particle size of at least a portion of the metals bearing material; mixing the metals bearing material...  
WO/2010/109078A1
The invention relates to an apparatus and method for removing molybdenum and other possible impurities from an organic copper-containing extraction solution in connection with the liquid- liquid extraction related to copper recovery. The...  
WO/2010/108212A1
A method for leaching zinc from a zinc-bearing carbonate ore, the method comprising the steps of: subjecting the zinc-bearing carbonate ore to elevated temperatures of between about 300°C and about 900°C thereby producing a roasted ore...  
WO/2010/105292A1
A method for the removal of a impurity element from an iron ore, the method including the steps of heating the ore to a temperature not exceeding about 500 °C and subsequently contacting the ore with an acid or alkaline leach solution t...  
WO/2010/103913A1
Provided is a method for removing manganese from a sulfuric -acid-acidified wastewater containing aluminum, magnesium, and manganese by selective precipitation of manganese while inhibiting the precipitation of magnesium. Specifically pr...  
WO/2010/094161A1
A method for extracting valuable metals from laterite-nickel ore with whole closed-loop circulation of hydrochloric acid is provided. The method includes the following steps: crushing the laterite-nickel ore, leaching chloride under heat...  
WO/2010/091515A1
A filter bag for Bayer liquor filtration in an alumina production process, the filter bag comprising a filter sleeve being tubular with an open end and a closed end opposite the open end, and a connector being tubular, made of an anti-sc...  
WO/2010/090478A2
The present invention relates to a leaching method that enables the production of good quality molybdenum oxide concentrates by selectively leaching impurities such as copper, iron, lead and zinc from roasted molybdenum oxide concentrate...  
WO/2010/089462A1
The invention relates to a method and arrangement for separating two solutions mixed in dispersion into two solution phases in a liquid-liquid extraction separation cell (1). The arrangement includes a first guide wall (4), which is arra...  
WO/2010/088863A1
A method for depositing metal ions wherein mineral(s), oxide(s) or hydroxide(s) of magnesium or/and calcium is/are used as raw material(s), through at least one process of calcination, slaking and carbonization, to produce aqueous soluti...  
WO/2010/090176A1
Disclosed is a method for collecting nickel from an acidic sulfuric acid solution that contains nickel and cobalt, as well as impurity elements such as iron, aluminum and manganese. The method is characterized by comprising the following...  
WO/2010/090478A3
The present invention relates to a leaching method that enables the production of good quality molybdenum oxide concentrates by selectively leaching impurities such as copper, iron, lead and zinc from roasted molybdenum oxide concentrate...  
WO/2010/089456A1
The invention relates to a method and arrangement for separating two solutions mixed in dispersion into two solution phases in a liquid-liquid extraction separation cell (1). The shut-off element (3, 4, 5) comprises a front panel (8) tha...  
WO/2010/085857A1
A method of agglomerating a nickel laterite ore comprising the steps of: i) feeding a nickel laterite ore material to be agglomerated into an agglomeration circuit; and ii) adding a sulfuric acid containing agglomerating solution to the ...  
WO/2010/087094A1
Disclosed is a means for highly efficiently removing a metal which is dissolved in waste water. Specifically, a water-soluble polymer (2) having a carboxyl group is added into waste water in which a metal salt (1) is dissolved. As a re...  
WO/2010/088388A1
The disclosure relates generally to the use of zeolite to assist in dispersion of components in aqueous mineral slurries to release and separate individual components of the slurry, which may then be recovered from the slurry and, in par...  
WO/2010/084877A1
Provided is a process which is intended to be employed in a refinery where decopperizing electrolysis slime and arsenic sulfide sediment are formed as intermediate products of nonferrous refining with the amount of the former being large...  
WO/2010/081418A1
The application of aqueous solution of magnesium bicarbonate and/or calcium bicarbonate in the process of extraction separation and purification of metals is disclosed, wherein the aqueous solution of magnesium bicarbonate and/or calcium...  
WO/2010/081418A8
The application of aqueous solution of magnesium bicarbonate and/or calcium bicarbonate in the process of extraction separation and purification of metals is disclosed, wherein the aqueous solution of magnesium bicarbonate and/or calcium...  
WO/2010/080050A1
The invention relates to hydrometallurgy and can be used for extracting precious metals (palladium, platinum, gold and silver) from different types of raw mineral materials. The method for the sorptive extraction of precious metals from ...  
WO/2010/076030A1
This disclosure concerns a process for the recovery of PGM from the cobalt-based, PGM-bearing alloys that are typically obtained after smelting spent GTL catalysts. The process comprises the steps of: - powdering the alloy to a mean part...  

Matches 551 - 600 out of 7,262