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Matches 1 - 50 out of 9,477

Document Document Title
WO/2019/055766A1
Compositions and methods are provided that provide recovery of metals such as copper, nickel, cobalt, indium, and other metals are recovered from mine tailings, in situ ore bodies, or postconsumer waste. An amine-containing lixiviant is ...  
WO/2019/053148A1
The invention relates to a method for extracting at least one metal contained in a sample comprising a mixture of metal salts from at least two different metals, comprising the successive steps of: a) contacting the sample, in a grinding...  
WO/2019/049593A1
Provided is a wet metallurgy method for a nickel oxide mineral ore, the method being capable of effectively increasing the pH of a processing liquid and capable of efficiently facilitating a sulfurization reaction using the processing li...  
WO/2019/048790A1
The present invention concerns a method for separating palladium from other metal elements contained in an aqueous nitric phase, consisting of (i) placing an aqueous nitric phase containing, in addition to palladium, at least one other m...  
WO/2019/050472A1
There is provided a method of producing a nanomaterial, the method comprising adding an alkaline earth metal salt to a leaching solution containing vanadate ions to form a mixture, the leaching solution being derived from a vanadium sour...  
WO/2019/048789A1
The present invention relates to a method for recovering palladium from a nitric aqueous phase comprising a nitric acid concentration of at most 3 mol.L-1 and which contains, in addition to the palladium, at least one other metal cation ...  
WO/2019/046027A1
A method of selectively removing scandium from a scandium and fluoride-containing feed material includes providing the scandium-containing feed material, acid leaching the scandium-containing feed material with at least one acid in a pre...  
WO/2019/046616A1
The present disclosure provides fluorinated crown ethers. The fluorinated crown ethers have one or more pendant fluorinated groups (e.g., thioether groups with a terminal fluorinated group). The fluorinated crown ethers have desirable so...  
WO/2018/236240A8
The invention relates to the field of metallurgy of rare metals, more particularly to a method for recovering scandium from red mud, the waste generated in alumina production. The method comprises repulping red mud, sorption leaching sca...  
WO/2019/043244A1
A process is described for the recovery of the chemical components of the "black paste" resulting from the opening of dead alkaline and zinc-carbon batteries.  
WO/2019/045161A1
Presented is a method for economically smelting nickel from nickel laterite ores by a combination of wet and dry processes, comprising the steps of: preparing a dissolution solution by dissolving, in a strong acid, a hydroxide mixture co...  
WO/2019/033154A1
A process for recovery of one or more elements, selected from precious metals and chalcophile metals, as herein defined, from materials containing precious and/or chalcophile metal/s, said process including: (i) contacting the material w...  
WO/2019/034631A1
The present invention relates to a new solvent extraction process for the extraction of rare earth elements and the separation of a mixture of rare earth elements into the individual rare earth elements. Said process comprises the extrac...  
WO/2019/035319A1
A leaching treatment method of nickel oxide ore is provided which enables effectively reducing the amount used of sulfuric acid while maintaining a high nickel leaching rate. In this leaching treatment method, leaching treatment is perfo...  
WO/2019/028497A1
A process is disclosed for the recovery of a metal from a pyrite-bearing material. The process comprises thermally decomposing the pyrite-bearing material so as to produce a material comprising pyrrhotite (FeS). The process also comprise...  
WO/2019/029615A1
A method for cleanly producing vanadium trioxide by a vanadium-containing solution, comprising: adding sulfuric acid to the vanadium-containing solution, wherein the molar ratio of sodium ions to sulfate radicals in the vanadium-containi...  
WO/2019/026977A1
This sodium removal method is a method for removing sodium from a sodium-containing solution by precipitating sodium ions in the sodium-containing solution as a sodium salt, the method having a sodium precipitation step for reducing the ...  
WO/2019/025714A1
The invention relates to bifunctional compounds which have a thiophosphine function and which are capable of highly effectively extracting uranium(VI) from an aqueous solution of phosphoric acid, and do so with a high selectivity with re...  
WO/2019/026978A1
This method for dissolving a lithium compound comprises bringing a lithium compound into contact with water or an acid solution and supplying carbonate ions to the water or acid solution to generate carbonic acid, and reacting the lithiu...  
WO/2019/023735A1
Contemplated is a sensor system for use with a measuring device. The measuring device being of the type adapted to measure the volume of a desired solid component in a sample volume of a solid-liquid slurry obtained from either a carbon-...  
WO/2019/027932A1
In embodiments, pressurized fluid containing reagents of formulated -mixtures of solids, liquids and gasses are delivered into a cased well then into the heap or pile to open or stimulate, new horizontal and vertical fluid pathways, chan...  
WO/2019/022555A1
The present invention provides a method for selective recovery of a valuable metal from a waste denitrification catalyst through alkali fusion, the method comprising the steps of: (a) adding an alkali metal to a waste denitrification cat...  
WO/2019/022320A1
One embodiment of the present invention relates to a method for extracting rare metal elements, comprising: a first step of preparing an extraction filtrate by reacting coal ash and an extraction solvent, which includes a halogen acid; a...  
WO/2019/016610A2
Materials and methods for precious metal recovery are disclosed. Usable leaching solutions are preferably aqueous based and include appropriate materials in sufficient quantities to solubilize and stabilize precious metal. Such materials...  
WO/2019/016610A3
A method for generating an aqueous-based leaching solution for precious metal is disclosed, comprising: combining iodide salt material, carboxylic acid material, and water in an agitated tank, thereby producing a first mixture; passing t...  
WO/2019/015518A1
Provided is an apparatus for continuous decomposition of rare earth concentrate. The apparatus comprises: a body, which has a feed port, two liquid feeding ports, and two tail gas outlets at the top and two discharge ports at the bottom,...  
WO/2019/011876A1
The invention relates to a method for obtaining caesium from aqueous starting solutions having caesium contents in the range of 50 ppm to 5000 ppm, in which method the caesium ions in the aqueous solution are, in a first step, precipitat...  
WO/2019/014632A1
Disclosed methods relate to producing rare earth metals from oxides thereof. A method can include dissolving a rare earth rnetal oxide in an acid to prepare a rare earth metal-acid solution; reacting an alkali metal fluoride with the rar...  
WO/2019/006545A1
A method is disclosed for the oxidation and thermal decomposition of metal chlorides, leading to an efficient and effective separation of nuisance elements such as iron and aluminium from value metals such as copper and nickel. In the fi...  
WO/2019/009768A1
The invention relates to a composition and a method for producing a solid extractant for recovering scandium from sulphurous solutions. A solid extractant is proposed for the recovery of scandium from scandium-containing solutions, which...  
WO/2019/006568A1
The present invention relates to a method for extracting base and precious metals, all contained in refractory minerals, using aqueous media. The aim is to replace the current "flotation/smelting"ยท method for extracting minerals in Chil...  
WO/2019/008232A1
Limitations of existing metal recovery processes have raised a need to develop more efficient methods. To answer these needs, we present a simple, effective and selective hydrometallurgic precious metal recovery method based on laser 3D ...  
WO/2019/007712A1
The present invention relates to a process to treat carbonatitic non-sulfidic ores with a collector composition that comprises a phosphate compound of the formula (I) wherein R is linear or branched, saturated or unsaturated hydrocarbon ...  
WO/2019/007714A1
The present invention relates to a process to treat siliceous non-sulfidic ores with a collector composition that comprises a phosphate compound of the formula (I) wherein R is linear or branched, saturated or unsaturated hydrocarbon gro...  
WO/2019/002788A1
The invention relates to the use of ureas as extractants for fully or partially separating uranium(VI) from plutonium(IV) in an aqueous solution obtained by dissolving a spent nuclear fuel in nitric acid, by means of liquid-liquid extrac...  
WO/2019/000014A1
The present specification relates to a method for removing actinium from process liquors comprising ions of interest (which may be, for example, rare earth ions) and actinium ions. In this method, a low solubility metal sulfate salt is c...  
WO/2018/236240A1
The invention relates to the field of metallurgy of rare metals, more particularly to a method for recovering scandium from red mud, the waste generated in alumina production. The method comprises repulping red mud, sorption leaching sca...  
WO/2018/234637A1
The invention relates to a method of recovering Pt or Ag or Pt and Ag from a sulfate solution on an electrode. In particular, the invention concerns a method for recovering Pt or Ag or Pt and Ag from base metal bearing process solution, ...  
WO/2018/234614A1
The invention relates to a method and apparatus of preparing lithium compound(s) from lithium-containing mineral. The method comprises a) a leaching step, wherein the lithium-containing mineral is leached in aqueous leach solution contai...  
WO/2018/234855A1
This invention relates to an integrated process for recovering value metals from sulphide ore which includes the steps of bulk sorting 16 and screening 24/28 crushed ore. The sorted/screened coarse ore stream is ground and classified 20 ...  
WO/2018/234880A1
This invention relates to a process for recovering value metals from sulphide ore, including steps of crushing ore in a primary crusher (14) to a size of about 40cm and less, passing the crushed ore through one or more of the following p...  
WO/2018/231040A1
The present invention relates to copper leaching, more specifically to a method for leaching copper oxide ore to produce copper precipitates, which method uses a non-polluting leaching agent and comprises the following steps: (a) crushin...  
WO/2018/228924A1
Suggested is a method for recovering precious metals from secondary resources comprising or consisting of the following steps: (a) providing a source of solid waste material comprising precious metals in an amount of at least 0.0001 % b....  
WO/2018/227237A1
A method is disclosed for the recovery of cobalt, nickel and manganese from ores, concentrates, tailings, scrap alloys and spent batteries in an oxidic form, which is suitable for direct use in the manufacture of lithium-ion batteries, i...  
WO/2018/227674A1
A method for removing a radioactive thorium element in a rare earth mineral, comprising the following steps: mixing the rare earth mineral and selenium dioxide in water; enabling the radioactive thorium element and the selenium dioxide t...  
WO/2018/223190A1
A process for leaching a mineral particulate material comprising the steps of feeding the mineral particulate material to a leaching step (10) in which at least one valuable metal in the mineral particulate material is leached into a lea...  
WO/2018/223192A1
A method is disclosed for maximising the recovery of lithium from purified feed solutions in either chloride or sulphate media. The solubility of lithium carbonate is sufficiently high that conventional techniques do not recover all of t...  
WO/2018/225738A1
This palladium extraction agent, which comprises an alkyl-sulfide-group-comprising disubstituted aromatic compound represented by general formula (I) as an active ingredient, can be used to selectively extract only palladium from a solut...  
WO/2018/225638A1
This method for separating a heavy metal is characterized by comprising: a first dissolution step wherein an acidic liquid and an object to be treated containing phosphorus and a heavy metal are mixed with each other, so that the phospho...  
WO/2018/218294A1
The invention provides a process for producing magnesium oxide from fly ash or slag comprising magnesium and iron, the process comprising: leaching the fly ash or slag with an aqueous mineral acid solution to produce a leaching solution ...  

Matches 1 - 50 out of 9,477