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WO/2021/173291A1 |
A method of recovering substantially rare earth elements (REEs) from magnets, including first dissolving a magnet to yield a solution containing Nd, Pr, and Dy, and then equilibrating a first column with Cu2+ solution to yield a first eq...
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WO/2021/169780A1 |
A gold leaching agent for selectively leaching gold from a gold-containing material, and a preparation method therefor and application thereof. The gold leaching agent is composed of halogen-containing organic matters that are soluble in...
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WO/2021/168210A1 |
Disclosed herein are methods for the recovery of lithium from lithium-bearing materials. More specifically, disclosed herein are methods comprising heating the lithium-bearing material with a solid roasting agent, forming a water suspens...
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WO/2021/165225A1 |
A process for separating a fusion mix sample comprising a slag material and a collector material using a separator. The separator comprising a plurality of impact members configured to rotate. The process comprising the steps of providin...
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WO/2021/166958A1 |
Provided are a slurry processing apparatus and a slurry processing method having a simple apparatus configuration and capable of promoting a solid-liquid reaction of a slurry.　The slurry processing apparatus is characterized by compris...
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WO/2021/163803A1 |
The present invention relates to the recovery of metals from raw ores or concentrates, and more specifically, to the recovery of rare earth elements, or oxides or salts thereof, from ores containing bastnaesite carbonatite, and/or monazi...
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WO/2021/166755A1 |
Provided is a method for treating an alloy by which nickel and/or cobalt can be selectively isolated from an alloy that contains copper as well as nickel and/or cobalt, in a waste lithium ion battery or the like.　The present invention ...
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WO/2021/160241A1 |
The invention relates to a method and an apparatus for extracting lithium from an aqueous lithium source (5) comprising the steps of removing by nanofiltration (S1) dissolved calcium ions Ca2+ and/or dissolved magnesium ions Mg2+ from an...
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WO/2021/160923A1 |
The present invention relates to an arrangement and method for extracting metals from nickel-containing laterites, comprising the acid treatment of a ground laterite material, the separate heat treatment of an obtained acid-containing la...
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WO/2021/161316A1 |
The invention relates to hydrometallurgical method for recovering lithium and one or more transition metals from spent lithium ion batteries, comprising: treating an electrode material of the batteries in an alkaline solution to dissolve...
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WO/2021/161178A1 |
The present invention relates to a method for recovering metal zinc from a solid metallurgical waste containing zinc and manganese, comprising the steps of: a. bringing said solid metallurgical waste into contact with an aqueous leaching...
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WO/2021/159089A1 |
A method for recovering metals from waste materials includes steps of contacting a waste material feed stream with a first lixiviant adapted to leach copper and other base metals from the waste material feed stream and provide a treated ...
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WO/2021/158491A1 |
Systems and methods for separating Y and Sr are provided. The systems and methods provide combinations of solutions, vessels, and/or media that can provide Y solutions of industrially beneficial concentration.
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WO/2021/153816A1 |
The present invention relates to a lithium extraction method, and can provide a lithium extraction method comprising: a step of preparing lithium phosphate containing impurities; a step of dissolving the lithium phosphate and impurities ...
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WO/2021/155224A1 |
Disclosed herein are methods for the recovery of one or more rare earth elements (REEs). More specifically, disclosed herein is a method comprising n stages, wherein each stage comprises treating a sample comprising one or more REEs with...
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WO/2021/150208A1 |
A system and method for the recovery and separation of rare earth elements (REEs) are provided. The system and method include the supported membrane solvent extraction of REEs and the separation of light and heavy REEs that have been rec...
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WO/2021/147342A1 |
An all-component rapid microwave digestion and noble metal ion liquid extraction method for a waste circuit board, belonging to the field of hydrometallurgy. As microwave can penetrate a leaching medium and directly heat a circuit board,...
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WO/2021/148403A1 |
The present invention is in the field of the extraction of lithium from a material comprising lithium and at least another metal. In particular, the invention concerns a process of extraction of lithium at least, from a material comprisi...
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WO/2021/146768A1 |
A process for producing alumina and a lithium salt comprising the steps of: (a) calcining an alpha spodumene ore or concentrate to produce beta spodumene; and (b) (I) leaching beta spodumene from the calcining step (a) with an alkaline s...
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WO/2021/147816A1 |
A method for purification of an aqueous zinc sulfate solution. Copper and cadmium are removed from a neutral leaching solution by using a zinc powder, a zinc powder and a copper-antimony activator are added at a temperature of 80-95°C f...
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WO/2021/146797A1 |
A method for recovering vanadium values from a feed material comprising oxidised and carbonaceous materials obtained from a shale deposit or vanadium ore is disclosed. In the method, a vanadium concentrate enriched in vanadium and delete...
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WO/2021/150552A1 |
An improved method for recovering metals from spent catalysts, particularly from spent slurry catalysts, is disclosed. The method and associated processes comprising the method are useful to recover spent catalyst metals used in the petr...
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WO/2021/147573A1 |
Disclosed is a method for extracting metal nickel from a laterite nickel ore leaching liquor. The whole technological process of the method comprises the following steps: enabling laterite nickel ore leaching liquor to enter a resin towe...
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WO/2021/143434A1 |
Disclosed is a new continuous lithium-sodium separation method. A lithium-sodium separation mother solution, a first leacheate, a desorption solution, a second leacheate and a lithium-sodium separation adsorption tail solution respective...
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WO/2021/145099A1 |
The objective of the present invention is to synthesize a zirconium complex by making even a low concentration of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) react with radioactive zirconium at a high reaction rate. A...
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WO/2021/145488A1 |
The present invention relates to a method for extracting lithium and provides a method for extracting lithium, comprising the steps of: preparing a lithium-containing solution containing an alkaline earth metal; controlling the activity ...
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WO/2021/143809A1 |
Disclosed is a method for extracting lithium from lithium-containing low-magnesium brine, relating to the technical field of chemistry and chemical engineering. The method comprises the following steps: mixing CaO, water and excess Na2CO...
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WO/2021/140840A1 |
One purpose of the present invention is to provide a system for producing a magnesium chloride aqueous solution, said system making it possible to further reduce drug-related costs compared to conventional methods.　The present inventio...
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WO/2021/138750A1 |
The present invention relates to an alternative process for the recovery of metals, such as copper and zinc, in addition to cyanide, from cyanide-bearing solutions present in gold and silver recovery mining processes in a more efficient ...
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WO/2021/140077A1 |
The invention relates to a method for producing sulphuric acid and cement clinker and for obtaining rare earth elements using calcium sulphate, which is formed and separated as a solid by-product during the production of phosphoric acid ...
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WO/2021/140012A1 |
The invention concerns a process suitable for the recovery of platinum group metals (PGM) present in PGM-bearing catalysts comprising silicon carbide (SiC). More particularly, the process for the recovery of PGM present in PGM-bearing ca...
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WO/2021/134516A1 |
A comprehensive treatment method for applying sodium-containing ammonium waste liquid to laterite nickel ore, comprising the steps of ore proportioning pre-soaking, oxygen pressure leaching, partial neutralization, impurity removal by pr...
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WO/2021/135946A1 |
A new method for extracting lithium from salt lake brine, comprising the following steps: a salt lake old brine raw material, desorption liquid, low-magnesium water, and adsorption tail liquid pass through an old brine feeding pipe (2), ...
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WO/2021/138345A1 |
Processes for extracting lithium from a clay mineral and compositions thereof are described. The extraction process includes providing a clay mineral comprising lithium, mixing a cation source with the clay mineral, performing a high-ene...
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WO/2021/127711A1 |
A method for the recovery of a precious metal from activated carbon fines which includes the steps of adsorption of the precious metals from the activated carbon fines onto a weak-base anion exchange resin which contains guanidine functi...
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WO/2021/122912A1 |
The invention provides a method for reducing impurities from roasted molybdenum concentrate (RMC), comprising: performing a first treatment in a first reactor, on a portion of the RMC forming a first treated suspension, the first treatme...
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WO/2021/119862A1 |
A hydrometallurgical process for curing primary and secondary sulphides to improve copper recovery, which comprises: (a) crushing: the size of the mineral must be reduced to less than 5 cm; (b) agglomeration: the crushed mineral must be ...
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WO/2021/119728A1 |
A method for the recovery of vanadium from a vanadium containing feed stream, the method comprises: subjecting the vanadium containing feed stream to an acid leach step to form a slurry including a pregnant leach solution that comprises ...
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WO/2021/117385A1 |
The present invention addresses the problem of providing a method for recovering a catalytic metal from an aqueous solution which contains a catalytic metal which is coprecipitated with tin, said method being characterized by including: ...
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WO/2021/116185A1 |
Stationary phase for preparative High Pressure Liquid Chromatography (HPLC) for preparative separation of Rare Earth Elements (REEs), the stationary phase comprising porous particles suitable for HPLC having a non-polar surface being imp...
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WO/2021/119085A1 |
A system for melting lead scrap pieces. The system includes a vessel. A vortexing chamber is disposed in the vessel. The vortexing chamber includes an inlet, an outlet and an open top configured to receive lead pieces. A pump is disposed...
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WO/2021/116742A1 |
The invention relates to a method for obtaining an alkaline earth metal compound from mined materials, which comprises: (i) leaching a quantity of a mined material, using a leaching solution comprising at least one first acid; (ii) filte...
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WO/2021/105889A1 |
An apparatus and a method for purifying a Bayer process stream that includes a FILTER stage comprising at least one filter configured to filter particulate matter from at least one ionic liquid stream from EXTRACT, STRIP, and REGEN stage...
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WO/2021/105215A1 |
The present invention relates to a method for recovery of metals from exhausted acid solutions, which acid solutions contain metal oxides comprising iron, chrome and nickel, comprising the steps of adjusting the solution, by adding preci...
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WO/2021/101129A1 |
Disclosed are a membrane-based process and system capable of effectively concentrating and recovering lithium, which is contained in an aqueous solution or brine, within a short time by performing a nanofiltration step at the front end t...
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WO/2021/097527A1 |
The present invention relates to a process for recovering metals from metal-bearing material, said process comprising the step of contacting the metal-bearing material with condensed phosphoric acid at a temperature of greater than 215 Â...
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WO/2021/099021A1 |
A process for recovering precious metal from an acidic aqueous solution containing dissolved precious metal and free chlorine, comprising the sequential steps: (1) a salt of a non-precious metal at a low oxidation stage and in the form o...
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WO/2021/097518A1 |
A method for preparing aluminium compounds from kaolin comprises (a) leaching the kaolin with sulphuric acid, (b) separating a pregnant leach solution from a solid residue, (c) precipitating an alum containing solid from the pregnant lea...
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WO/2021/094647A1 |
The present invention relates to an arrangement and a method for recovering lithium hydroxide from a fresh feed comprising a mineral raw material containing lithium or a raw material containing lithium carbonate, or a mixture of these ra...
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WO/2021/094823A1 |
Processes for recovering iodine from solid materials in which copper is present are performed by combining the solid material with a basic solution having a pH greater than 10 to solubilize and remove iodine from the solid material, ther...
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