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Matches 201 - 250 out of 4,004

Document Document Title
WO/2013/096893
A method to extract and refine metal products from metal-bearing ores, including a method to extract and refine titanium products. Titanium products can be extracted from titanium-bearing ores with TiO2 and impurity levels unsuitable for...  
WO/2013/093194
2112057PC 17 (57) ABSTRACT The invention relates to a method for enhancing reactor volume use in a leaching stagein a hydrometallurgical process. According to the method, a concentrate or cal- cine leaching stageis carried out primarily ...  
WO/2013/096071
The present disclosure relates to a process and system for recovery of one or more metal values using solution extraction techniques and to a system for metal value recovery. In an exemplary embodiment, the solution extraction system com...  
WO/2013/086555
A method for concentrating metal chlorides in and separating same from an iron(III) chloride-containing hydrochloric acid solution is described, wherein iron is precipitated from the solution as iron oxide, preferably haematite and filte...  
WO/2013/089400
A method of extracting lithium from a lithium bearing solution and specifically, economically extracting lithium from a lithium bearing solution comprising the steps of: adding a nucleus particle to a lithium bearing solution; and precip...  
WO/2013/086606
The invention provides a process for the leaching of a laterite ore, concentrate, tailings or waste rock for the recovery of value metals, at least one value metal being nickel. The laterite ore or concentrate is subjected to a leaching ...  
WO/2013/085052
 Provided is a rare earth element recovery method in which rare earth elements, particularly including Nd and Dy, are efficiently leached from a leaching raw material containing rare earth elements, and then separated and recovered. ...  
WO/2013/078553
The present invention relates to method and a system of reducing chromium (VI) from a chromium bearing solution. The reduction of the chromium (VI) is achieved by contacting the chromium bearing solution which comprises chromium (VI) ion...  
WO/2013/077296
The purpose of the present invention is to provide a method for producing a high-purity nickel sulfate with less impurities, especially with less magnesium or less chlorides by regulating the concentration of the extractant and the pH co...  
WO/2013/076812
The present invention provides a method for producing a solution that contains nickel and cobalt with high purity by more efficiently and easily separating nickel and cobalt from a positive electrode material of a used nickel hydrogen ba...  
WO/2013/077168
Provided are a cobalt extractant capable of selectively extracting cobalt from an acidic solution containing a high concentration of manganese, and a cobalt extraction method in which the cobalt extractant is used. This cobalt extractant...  
WO/2013/073376
The purpose of the present invention is to provide a method for recovering a rare earth element, which is capable of efficiently recovering a rare earth element with high yield without using an expensive chemical, solvent or the like. In...  
WO/2013/069563
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/2013/069562
The objective of the present invention is to selectively extract light rare earth metals, and by extension, europium, from an acidic solution containing a plurality of types of rare earth metal. This valuable metal extraction agent is re...  
WO/2013/068645
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/2013/067577
A method for treating an ore material with electromagnetic energy, the method comprising at least the steps of: agglomerating the ore material; irradiating the ore material with electromagnetic energy; thereby heating the liquid in the o...  
WO/2013/065050
Continuous methods and processes for removing Li ions from an aqueous feed solution.  
WO/2013/065773
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/2013/065050
Continuous methods and processes for removing Li ions from an aqueous feed solution.  
WO/2013/061848
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/2013/057557
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/2013/056543
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/2013/057317
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/2013/049886
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/2013/051715
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/2013/051965
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/2013/049953
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/2013/044380
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/2013/044376
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/2013/045855
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/2013/042340
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/2013/040694
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/2013/040658
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/2013/037054
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/2013/035301
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/2013/036440
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/2013/029785
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/2013/026093
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/2013/027084
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/2013/027603
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/2013/023254
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/2013/023297
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/2013/023254
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/2013/024782
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/2013/020175
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/2013/021438
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/2013/017162
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/2013/017000
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/2013/016813
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/2013/016082
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...  

Matches 201 - 250 out of 4,004