Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 301 - 350 out of 7,262

Document Document Title
WO/2013/042340A1
According to a metal recovery method, it is possible to recover with high efficiency metals (metal ions) contained in a solution by culturing red algae belonging to the order Cyanidiales in a solution wherein the cell concentration there...  
WO/2013/040694A1
A process for upgrading tantalum and niobium ores and concentrates is described herein. The process comprising: a) submitting the ore or concentrate to a caustic fusion or an alkali fusion using a melt comprising at least one salt of an ...  
WO/2013/040658A1
A method for controlling mercury emissions from aqueous alkaline solutions from the Bayer circuit, the method comprising the steps of: introducing a source of copper ions to an aqueous alkaline solution containing sulfide ions; precipita...  
WO/2013/037054A1
There are provided processes for preparing alumina. These processes can comprise leaching an aluminum-containing material with HCl so as to obtain a leachate comprising aluminum ions and a solid, and separating said solid from said leach...  
WO/2013/035301A1
A precious-metal adsorbent is chemically modified by a functional group including an N atom and/or an S atom, and is formed from one of an alga, a residue of the alga, a substance obtained by treating the alga with a strong acid, and a s...  
WO/2013/036440A1
Processes for recovering an organic solvent extractant phase from a solid-stabilized emulsion formed in a hydrometallurgical solvent extraction circuit are disclosed. One such process includes mixing a de-emulsifier comprising an effecti...  
WO/2013/029785A1
A method for removing metal and/or precious metal-containing depositions from substrates, wherein said substrate is subjected to treatment with an organo amine protectant component P and an inorganic active component A. Component P may b...  
WO/2013/026093A1
A method (10) for the separation of multivalent species from monovalent species in an acidic leach solution (14). The method (14) comprises the steps of passing the acidic leach solution (14) through a membrane in a membrane treatment st...  
WO/2013/027084A1
A process for producing direct reduced iron (DRI) from iron ores and reducing the cost and energy requirements of steelmaking, utilizing a gas produced from fossil fuels, containing sulfur compounds and BTX, wherein said gas is heated in...  
WO/2013/027603A1
Provided are a nickel recovery loss reduction method capable of reducing nickel recovery loss by lowering the concentration of fine floating solid contents in overflow liquid in precipitation separation treatment to thereby enable furthe...  
WO/2013/023254A1
A method (10) for the recovery of solid magnesium sulphate from a process solution (12) containing dissolved magnesium sulphate. The method comprises concentrating the process solution (12) using membrane filtration (16) to form a concen...  
WO/2013/023297A1
The invention relates to modifications of a non-ammoniacal thiosulfate process of leaching precious metals (e.g. gold or silver) from precious metal-containing ores. The process involves leaching the ore with an aqueous lixiviant contain...  
WO/2013/023254A8
A method (10) for the recovery of solid magnesium sulphate from a process solution (12) containing dissolved magnesium sulphate. The method comprises concentrating the process solution (12) using membrane filtration (16) to form a concen...  
WO/2013/024782A1
The present invention is a method for recovering indium from an indium-containing product, and is characterized in comprising: a leaching step of obtaining a leach liquor made of an aqueous solution of hydrochloric acid containing indium...  
WO/2013/020175A1
A process for treating a mixed sulphidic material containing lead sulphide and at least one other metal sulphide comprises the steps of subjecting the mixed sulphidic material to selective oxidation such that lead sulphide in the materia...  
WO/2013/021438A1
Provided is a method for leaching out copper from a copper sulfide ore using a sulfuric acid solution containing an iron-oxidizing bacterium and silver without decreasing the growth of the iron-oxidizing bacterium and without deteriorati...  
WO/2013/017162A1
An arrangement for the in-situ measurement of at least a partial pressure of oxygen within a solid waste dump comprises: at least one measuring sensor arranged within the solid waste dump for locally sensing the oxygen partial pressure, ...  
WO/2013/017000A1
Provided is a pretreatment method in titanium white preparation by recycling titanium white acid hydrolysis residue, comprising: pulverizing the dried acid hydrolysis residue; mixing sulphuric acid solution with the acid hydrolysis resid...  
WO/2013/016813A1
There is provided a process for treating a feed material composition including a solid particulate precious metal material-rich feed material composition fraction and a solid particulate rare earth metal material-rich feed material compo...  
WO/2013/016082A1
Provided are methods for maintaining the ratio of the oxime to equilibrium modifier concentration in solvent extraction circuits, said solvents essentially consisting of at least one ketoxime and/or aldoxime; at least one equilibrium mod...  
WO/2013/011901A1
The purpose of the present invention is to provide: a separation/collection method which can increase the distribution ratio between different rare earth elements for the purpose of achieving the reduction of cost in the separation/colle...  
WO/2013/010263A1
There are provided methods for separating iron ions from aluminum ions contained in an acidic composition. The methods comprise reacting the acidic composition with a basic aqueous composition having a pH of at least 10.5 so as to obtain...  
WO/2013/005101A3
Provided are methods for dewatering a slurry from the leaching of a valuable ore with an aqueous solution of an effective leaching agent via a solids/liquid decantation system, providing an overflow depleted from solids and an underflow ...  
WO/2013/002416A1
Provided is a method of economically recovering manganese from low-grade minerals and manganese-containing waste. Iron-reducing bacteria and a manganese-containing substance to be treated are mixed in a treatment solution containing triv...  
WO/2012/177134A1
The invention is directed to a pertraction process for lowering the concentration of one or more target compounds in a feed solution. The process of the invention comprises - flowing on a first side of one or more hollow fibre membranes ...  
WO/2012/174349A2
The present disclosure is directed to a process for recovering a precious metal from a pregnant leach solution using a resin extractant. The precious metal is eluted from the loaded resin using an eluant comprising trithionate. The barre...  
WO/2012/174349A3
A process for recovering a precious metal from a pregnant leach solution using a resin extractant. The precious metal is eluted from the loaded resin using an eluant comprising trithionate. The barren resin is contacted with a sulfide, b...  
WO/2012/171481A1
A hydrometallurgical process for complete and comprehensive recovery with substantially no solid, liquid or gaseous waste and with zero emissions, characterized by the use of a strong leaching agent, such as a high acid oxidation or comp...  
WO/2012/172512A1
A method for leaching of minerals and sequestration of CO2 is disclosed, wherein the method comprises forming a rock pile; injecting exhaust gas containing CO2 in the lower part of the rock pile; spraying leaching liquid on top of the ro...  
WO/2012/171480A1
A hydrometallurgical method for lateritic nickel ore comprises leaching the raw material by means of a strong acid in high-pressure pipelines to improve the leaching rate of various valuable components in the raw material; adding a compl...  
WO/2012/168091A1
To achieve high efficiency in regeneration of waste fluid from metal plating electrolytes for example, a device and a method for recovering a recovering material from a recovering fluid containing the recovering material are provided, wh...  
WO/2012/168915A1
The present invention relates to a method for the selective separation and recovery of metal solutes from an acidic aqueous solution by solvent extraction techniques. The present invention further relates to the selective separation and ...  
WO/2012/162851A1
The invention relates to a process for producing a chemical reagent that is soluble in neutral waters, acid waters and in process solutions, in order to aid and improve the oxidation and leaching of copper sulfides. The process comprises...  
WO/2012/166104A1
A process for recovering Li-ions can include: providing a composition having Li-ions to be extracted therefrom; removing materials from the Li-ions; introducing one or more cyclic siloxane to the Li-ions so as to form one or more cyclic ...  
WO/2012/162817A1
There are provided methods for preparing hematite. For example, the method can comprise reacting a basic aqueous composition comprising the iron and the aluminum with hematite under conditions suitable for at least partially converting t...  
WO/2012/163200A1
Disclosed in the present invention is a method for separating rare earth from phosphorus ore, which belongs to the field of separating rare earth from the phosphorus ore containing rare earth. The method comprises: (1) mixing and reactin...  
WO/2012/162509A2
Disclosed herein are systems and methods for recovering a target material from an aqueous stream. The target material can be a natively hydrophobic target material, such as a hydrocarbon material, such as coal. The target material can al...  
WO/2012/161216A1
The present invention provides a complex which is produced by reductive bacteria during the culturing process and consists of a culture medium component and a metal-reduction product, and also provides uses thereof. The complex according...  
WO/2012/156894A3
The invention discloses a metal extraction process and arrangement therefore which includes a microfiltration plant for removing suspended solids from a pregnant leach solution including a metal to form a first retentate including the so...  
WO/2012/151721A1
A wet process for pre-treating carbonaceous refractory gold concentrate ores comprises the following steps: grinding the gold concentrate ores to a granularity of -0.074 mm with a mass content of 90-100% by ore mill, then adjusting the s...  
WO/2012/149642A1
The present disclosure relates to processes for recovering rare earth elements from various materials. The processes can comprise leaching the at least one material with at least one acid so as to obtain a leachate comprising at least on...  
WO/2012/149631A1
The present invention relates to methods for recovering precious metals including silver and gold, rare metals including indium and gallium, base metals including copper, lead and zinc or a combination of precious, rare and base metals f...  
WO/2012/149163A1
Sieve systems useful for selectively extracting lithium from brines are provided along with processes for making and using the sieve systems, wherein the sieve systems comprise a plurality of supported, activated manganese and/or cobalt-...  
WO/2012/142650A1
A phase splitter (14) for splitting phases of liquids, the phase splitter (14) characterised by an elongate body (16) having a generally convexly curved liquid-facing face (28) when viewed in transverse cross-section along a longitudinal...  
WO/2012/142648A1
A distribution array (10) for use in a settler area (12) of a mixer-settler, the distribution array (10) characterised by: at least one panel (26, 28) of linearly-spaced barrier elements (30), wherein the depth of the barrier elements (3...  
WO/2012/143394A1
The present invention relates to a method of removing impurities, especially thallium from an aqueous solution from an industrial process, using a chelating agent, especially an aminophosphonic or an iminodiacetic chelating resin. Accord...  
WO/2012/140284A8
The invention relates to a method wherein the zinc concentrate is subjected to the following steps: a. roasting at least one part of the zinc concentrate; b. neutral leaching, wherein the zinc oxide is dissolved; c. acid leaching, wherei...  
WO/2012/139166A1
A leach process (70) comprising the following steps: i) Passing a metal containing waste material (72) from a mineral processing operation (96) to a biological leach step (74) in which a proportion of the metal is extracted into a pregna...  
WO/2012/140998A1
The purpose of the present invention is to provide a method for recovering a heavy rare earth element, which enables the recovery of a heavy rare earth element with high efficiency and at a high recovery rate. In the present invention, a...  
WO/2012/140284A1
The invention relates to a method wherein the zinc concentrate is subjected to the following steps: a. roasting at least one part of the zinc concentrate; b. neutral leaching, wherein the zinc oxide is dissolved; c. acid leaching, wherei...  

Matches 301 - 350 out of 7,262