Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 551 - 600 out of 8,145

Document Document Title
WO/2013/069563A1
The objective of the present invention is to selectively extract cobalt from an acidic solution containing a high concentration of manganese. This cobalt extraction method extracts cobalt from an acidic solution containing manganese and ...  
WO/2013/068645A1
A method for leaching a sulfidic metal concentrate in hydrometallurgical production of metal in a leaching process from which hot water vapor containing off-gas is conducted out and to which an acid solution warmed up to an elevated temp...  
WO/2013/065050A8
Continuous methods and processes for removing Li ions from an aqueous feed solution.  
WO/2013/065050A1
Continuous methods and processes for removing Li ions from an aqueous feed solution.  
WO/2013/065773A1
The purpose of the present invention is to provide an ore slurry production method, which inhibits an increase in the viscosity of the ore slurry so as to prevent faulty transfer, and a metal refining method that utilizes the ore slurry ...  
WO/2013/061848A1
sulfate Provided is a method for easily and efficiently removing manganese from an acidic sulfuric acid solution that contains cobalt and manganese at low cost for the purpose of obtaining a high-purity cobalt sulfate aqueous solution th...  
WO/2013/057557A1
The present invention relates to a bioleaching bioreactor that has a system for injection and diffusion of air, which allows control of the fine size of the air bubble, thereby improving the distribution of oxygen and carbon dioxide that...  
WO/2013/057317A1
The present invention relates to method for recycling alkaline waste water from a stainless steel slag treatment process wherein stainless steel slag is brought into contact with water thereby producing said waste water, which waste wate...  
WO/2013/056543A1
The present invention relates to a complete cycle preparation method for producing lithium iron phosphate by using lithium ore as a lithium source, comprising: carrying out calcining, acidifying, leaching and purifying separation on lith...  
WO/2013/049953A3
The invention relates to an irrigation mat assembly which, due to the long time involved in assembling irrigation systems on piles and the loss of profit incurred through mounting each element of the system separately, is designed to be ...  
WO/2013/051965A1
´╗┐The invention relates to a method for separating hydrogen-absorbing metals from solutions, and also to an apparatus for carrying out said method. A reduction is undertaken using hydrogen generated in a solution, wherein the reduction ...  
WO/2013/051715A1
Provided are: a palladium separating agent which is capable of separating palladium ions in a short time with high selectivity from solutions that contain palladium ions at low to high concentrations; and a method for separating palladiu...  
WO/2013/049886A1
A process for oxidising milled ore for recovery of noble metals including gold, silver and the platinum family, and other metals including copper. An acidic (pH under 0.7) aqueous oxidising solution includes chloride and bromide ions and...  
WO/2013/044376A1
A system and a method for separating rare earth element compounds from a slurry of mixed rare earth element compounds, comprising flowing the slurry of mixed rare earth element compounds through at least a first channel rigged with at le...  
WO/2013/044380A1
The invention relates to a method for the extraction of precious metals, using halogens. It has been found that introducing halogens in the reactor in the form of hypohalites rather than free halogens simplified greatly the recycling of ...  
WO/2013/045855A1
The invention relates to a process for treating an effluent that contains metals, comprising: - at least one step of extraction of the chloride ions present in the effluent, in the form of metal complexes, by liquid-liquid extraction in ...  
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/2013/042340A1
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/2013/037054A1
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/2013/027084A1
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/2013/026093A1
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/2013/024782A1
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/2013/023254A8
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/2013/023297A1
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/2013/023254A1
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/2013/020175A1
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/2013/016813A1
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/2013/017000A1
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/2013/017162A1
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/2013/016082A1
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/2013/010263A1
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/2013/011901A1
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/2013/005101A3
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/2012/172512A1
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/2012/174349A2
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/2012/171481A1
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/2012/174349A3
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/2012/171480A1
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/2012/166104A1
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/2012/162851A1
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...  

Matches 551 - 600 out of 8,145