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Matches 101 - 150 out of 8,839

Document Document Title
WO/2017/035675A1
The invention relates to a method for removing arsenic from materials with a high arsenic and/or selenium content, comprising adding the material to a pressure reactor, adding an alkaline leaching solution, adding an oxidising gas, mixin...  
WO/2017/038589A1
Provided is a production process by which a so-called high-purity nickel powder made up of coarse particles and reduced in the content of impurities, in particular, in sulfur content, is produced from a nickel sulfate ammine complex solu...  
WO/2017/032164A1
Disclosed is a method for starting water spraying in copper sulphide ore heap bioleaching, comprising the following steps: 1) judging the feasibility of starting copper sulphide ore water spraying: if the acid production potential of the...  
WO/2017/033594A1
Provided is a method for efficiently removing manganese from a manganese-containing wastewater while minimizing the use amount of chemicals including a neutralizer. The method for manganese removal according to the present invention is f...  
WO/2017/034009A1
The present invention addresses the problem of providing a useful method for separating light rare earth elements and heavy rare earth elements. As a means for solving the problem, the method of the present invention is characterized by ...  
WO/2017/031595A1
The disclosure relates to methods for preparing lithium hydroxide. For example, such methods can comprise mixing a lithium-containing material with an acidic aqueous composition optionally comprising lithium sulfate and thereby obtaining...  
WO/2017/035061A1
Disclosed are methods for the reduction of impurity metals from a refinery electrolyte solution. Certain methods comprise contacting a refinery electrolyte solution comprising an impurity metal with a phosphate ester having a structure r...  
WO/2017/035344A1
Systems and methods for recovering and concentrating rare earth elements from seabed sediment deposits using seabed excavators and shipboard processing systems.  
WO/2017/033136A1
Present invention describes a biotechnological procedure to remove magnetic sulfur impurities from iron concentrate, wherein includes: to bioleach iron concentrate ores agglomerated in heaps under temperature condition between 5 and 35°...  
WO/2017/031949A1
A method for leaching low-grade lead-zinc oxide ores by means of electrooxidation comprises the following steps: A, pulping: carrying out crushing and ball milling on the low-grade lead-zinc oxide ores, and adding water to mix the ores t...  
WO/2017/030937A1
Disclosed herein are systems and methods in which ion-selective separation and multi-stage osmotic separation is used to produce multivalent-ion-rich process streams. According to certain embodiments, multiple separations may be used to ...  
WO/2017/029651A1
Method and apparatus thereof to separate aluminum from aluminum- containing source material, such as fly ash, includes preparing a slurry of the source material and water in an agitation tank and adding a leaching reactant to the slurry ...  
WO/2017/025834A1
The invention provides a method for recycling precious metals from waste materials characterized by steps of providing a powder or a waste material concentrate, digesting it under oxidizing conditions, qualitative and quantitative analys...  
WO/2017/025547A1
The invention relates to a process for extracting tantalum from an acid aqueous phase A1 comprising at least one step comprising the bringing of the aqueous phase A1 into contact with a phase A2 that is not miscible with water, then the ...  
WO/2017/018364A1
[Problem] To provide a method allowing for the separation of rhenium from a solution including rhenium by a simple procedure and in a shorter amount of time, and to provide a method for selectively recovering rhenium from a solution incl...  
WO/2017/017647A1
A process for recovery and recycling of materials constituting membranes for separation of hydrogen envisages a leaching stage where the tubular-membrane module is leached in an acid solvent for maximum dissolution of silver and palladiu...  
WO/2017/017193A1
The invention relates to novel dissymmetric N,N-dialkylamides having formula (I), wherein R represents a straight or branched alkyl group at C8 to C15. The invention also relates to a method for synthesising said N,N-dialkylamides, and t...  
WO/2017/019181A1
The present disclosure provides Molecularly Imprinted Polymer (MIP) technology for selectively sequestering one or more target molecules from chemical mixtures. Also disclosed herein are MIP beads and methods of making and using thereof.  
WO/2017/012710A1
The invention relates to the method step of reducing trivalent iron in the production of titanium dioxide according to the sulfate method. According to the invention, after the removal of the poorly soluble decomposition residue, the red...  
WO/2017/010437A1
The present invention is characterized by comprising: an acid leaching step for obtaining a leach liquid by causing leaching of, by means of an acid, a metal mixture at least containing vanadium and at least one type of a divalent or tri...  
WO/2017/008097A1
The invention discloses a measurement apparatus for measuring a volume of a desired solid component in a sample volume of a solid-liquid slurry. The sample volume of the slurry is received into a receptacle and screened to separate out t...  
WO/2017/011368A1
Systems and methods for recovering rare earth metals from rare earth metal-containing magnets includes fragmenting or commutating the magnets, contacting the commutated magnets with a mixture of low molecular weight carboxylic acids such...  
WO/2017/004694A1
Process to recover copper from a process feed including one or more feed components containing a base metal sulphidic feed, iron, copper and arsenic. Process feed and aqueous quench solution are introduced to a pressure oxidative leachin...  
WO/2017/004590A1
Metal-binding proteins, such as metallothionein proteins, are disclosed for removing metals from substrates in need of having such metals removed therefrom. Specifically, metallothionein proteins according to SEQ ID NO:1, 2, or 9-20 are ...  
WO/2016/210051A8
The recovery of noble metal(s) from noble-metal-containing material is generally described. The noble metal(s) can be recovered selectively, in some cases, such that noble metal(s) is at least partially separated from non-noble-metal mat...  
WO/2016/210051A1
The recovery of noble metal(s) from noble-metal-containing material is generally described. The noble metal(s) can be recovered selectively, in some cases, such that noble metal(s) is at least partially separated from non-noble-metal mat...  
WO/2016/209093A1
The present invention provides a method of chromium separation from sewage, including tanning sewage, as a result of a double exchange reaction yielding insoluble salts of chromium and organic acids which are very easy to filtrate and en...  
WO/2016/208489A1
Provided is a method for producing scandium oxide that makes it possible to produce scandium oxide having a suppressed sulfur content when obtaining scandium oxide from scandium oxalate containing sulfur compounds as impurities. The meth...  
WO/2016/209178A1
The invention comprises leaching lateritic ores used during the production of nickel-cobalt, or leaching of secondary scandium sources in which scandium is enriched within the precipitate during a pH controlled solution purification proc...  
WO/2016/202257A1
Provided are a method for recovering phosphorus and a rare earth from a rare earth-containing phosphate ore, and a substance containing a rare earth phosphate. The method comprises: step S1, leaching the rare earth phosphate ore by using...  
WO/2016/201558A1
A method for hydrometallurgical extraction of rare earth elements and niobium from a an ore or a flotation concentrate containing rare earth elements, niobium, iron and alkali earth metals, the method comprising removal of the alkali ear...  
WO/2016/197244A1
A dry slag atomization is applied in upgrading slags. The atomized slag may be subjected to a leaching process to produce upgraded slag. In the case of titania-rich slags, conveniently, the titanium in the atomized slag has been oxidized...  
WO/2016/198872A1
The present application relates to the electrochemical extraction of lead (Pb) from a lead- containing material using a deep eutectic solvent. This is of particular use in the recycling of the lead-based materials that result from energy...  
WO/2016/201456A1
The use: Extraction of valuable metals - uranium, vanadium, rhenium, rare earth elements (REE) and scandium during comprehensive black-shale ore processing. The objective: To increase the recovery of uranium, vanadium, uranium, molybdenu...  
WO/2016/198976A1
A method of integrated chemical and bacterial leaching of a base metal from a mineral is disclosed. The method includes leaching a base metal from a mineral with an ammoniacal thiosulfate chemical leaching solution having a pH from about...  
WO/2016/194658A1
[Problem] To provide an aqueous cobalt chloride solution purification method capable of efficiently removing impurities from a cobalt salt solution. [Solution] A method for bringing metallic nickel into contact with an aqueous cobalt chl...  
WO/2016/196949A1
Methods of isolating tungsten and, in particular, methods of separating tungsten and vanadium are described herein. The methods can generally comprise treating a tungsten-containing material in aqueous solution with a reducing agent suit...  
WO/2016/194709A1
Provided is a method, in preliminary neutralization of leach slurry generated in a hydrometallurgical process for nickel oxide ore, that is capable of promoting precipitation of iron contained in said leach slurry and limiting increases ...  
WO/2016/194659A1
[Problem] To provide an aqueous cobalt chloride solution purification method capable of efficiently removing impurities from a cobalt salt solution. [Solution] A method for bringing metallic nickel into contact with an aqueous cobalt chl...  
WO/2016/183611A1
A simplified or truncated hydrometallurgical method for the removal of uranium, thorium, radium, lead, bismuth and polonium and/ or other radionuclides from a radioactive copper concentrate to produce an upgraded copper concentrate havin...  
WO/2016/183610A1
A hydrometallurgical method for the removal of uranium, thorium, radium, lead, bismuth and polonium and/ or other radionuclides from a radioactive copper concentrate (92) to produce an upgraded copper concentrate having lowered emission ...  
WO/2016/183428A1
Lead is recovered from lead paste of a lead acid battery in a continuous process. The lead paste is contacted with a base to generate a supernatant and a precipitate. The precipitate is separated from the supernatant, and is contacted wi...  
WO/2016/182472A1
The proposed invention relates to processes for extracting and concentrating radionuclides and can be used in radiochemical technologies when treating liquid radioactive waste. The method for isolating americium from liquid radioactiv...  
WO/2016/181673A1
Provided is a method by which it is possible, in a wet-process method for refining nickel oxide ore, to efficiently reduce the amount of acid used in the leaching step and the amount of neutralizing agent used in the final neutralization...  
WO/2016/181039A1
A method is disclosed for recovering gold from a gold-containing organic solution containing soluble gold. The method comprises exposing the gold-containing organic solution to conditions that cause the organic solution to decompose, whe...  
WO/2016/178073A3
The invention is related to a method for the treatment of sludge containing iron and between 4.5% to 12% by weight of zinc. This method includes a leaching step wherein leaching agents include hydrochloric acid and chlorate, and wherein ...  
WO/2016/178073A2
The invention is related to a method for the treatment of sludge containing iron and between 4.5% to 12% by weight of zinc. This method includes a leaching step wherein leaching agents include hydrochloric acid and chlorate, and wherein ...  
WO/2016/178040A1
The invention is related to a method for the treatment of sludge containing iron and between 4.5% to 12% by weight of zinc. This method includes a leaching step wherein leaching agents include hydrochloric acid and chlorate, and wherein ...  
WO/2016/177695A1
The invention relates to the use, as an extraction agent for extracting at least one rare earth from an aqueous phase including phosphoric acid, of at least one compound of the following general formula (I): where n is an integer equal t...  
WO/2016/171236A1
The problem of the present invention is to provide a method for solidifying and recovering rare-earth elements using microorganisms that have the capability to solidify rare-earth elements, and to provide a device for recovering rare-ear...  

Matches 101 - 150 out of 8,839