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Patent Searching and Data


Matches 101 - 150 out of 3,861

Document Document Title
WO/2015/049959A1
The present invention provides a method for efficiently producing composite noble metal nanoparticles by means of a process that is low-energy, has a low environmental impact, and is simple. The method for producing composite noble metal...  
WO/2015/031943A1
A process for recovery of metal comprising copper and/or a precious metal from a metal containing material, including the steps of: leaching the metal containing material with an alkaline lixiviant and an amino acid or derivative thereof...  
WO/2015/030243A1
This invention pertains to the following: a recovery composition that contains ruthenium, iridium, and iron, with the ruthenium content and the iridium content satisfying relation (1); and a method in which said composition is used to re...  
WO/2015/026061A1
Disclosed is an integrated electrolysis leaching device for leaching a refractory rare metal. The integrated electrolysis leaching device for leaching a refractory rare metal is characterized by comprising: a reactor containing an electr...  
WO/2015/016102A1
Provided are an adsorption filter that can absorb and recover metal ions and the like efficiently and a method for manufacturing the same. The adsorption filter is constituted of graft copolymer particles into which an adsorption group h...  
WO/2015/016103A1
Provided are: an adsorbent material able to efficiently adsorb an adsorption subject such as a metal ion; and a method for producing such an adsorbent material. The adsorbent material is such that an ethylene-vinyl alcohol copolymer is t...  
WO/2015/016732A1
The invention relates to non-ferrous metallurgy and to the metallurgy of precious metals, in particular, to the separation technology for gold-silver alloys and mixtures using the vacuum distillation method, for producing high purity met...  
WO/2015/013147A1
The invention provides methods, compositions, and apparatuses for preventing the formation of scale in heap leach process solution distribution systems comprised of piping, spray nozzels, or emitter tubes. Solution distribution system co...  
WO/2015/010754A1
The process serves for utilization of metal-containing waste materials. To develop a process which permits the controlled reaction of metals with water to produce hydrogen in such a way that the hydrogen can be utilized in a simple and s...  
WO/2015/010793A3
The invention relates to a method for recycling membrane/electrode units (MEA) of a fuel cell, comprising proton-exchange membrane material (PEM) and gas-diffusion layers (GDL), said PEM containing a perfluorsulfonic acid polymer (PFSA) ...  
WO/2015/008168A3
The present application offers a solution to the current problems associated with recovery and recycling of precious metals such as gold and copper from scrap material, discarded articles, and other items. The solution is premised on a m...  
WO/2015/006861A1
The value-minerals are captured by gravity-separation, from a low-grade slurry. The ratio of liquids-to-solids in the slurry affects the efficiency of capture, and an ideal liquids/solids ratio is the ratio at which the efficiency of cap...  
WO/2015/006850A1
A method for recovering precious metal from an acidic pregnant solution resulting from halogen or hypohalite leaching of an ore, comprising lowering the ORP of the pregnant leachate with a reducing agent in the presence of slurried non-c...  
WO/2014/203895A1
Provided is a method for efficiently recovering various types of metal, including rare metals, noble metals and other metals, from waste electronic substrates. This method of recovering metal from waste electronic substrates involves: a ...  
WO/2014/191833A1
The disclosure relates to the oxidation and immobilization of trivalent arsenic from arsenic-containing solutions. The process includes oxidation of trivalent arsenic (As3+) species to the pentavalent state (As5+). A carbon additive (e.g...  
WO/2014/191832A1
The disclosure relates to pre-treatment of precious metal-bearing oxide ores, prior to precious metal leaching by thiosulfate. The process comprises mixing oxide ore in oxygenated water in the presence of a carbon-based material (e.g., a...  
WO/2014/190434A1
A method for purification and separation of mixed elements, comprising at least a first free flow electrophoresis separation chamber, wherein a solution of the mixed elements is passed through the first separation chamber, an electric fi...  
WO/2014/193751A1
An apparatus and/or system and method for recycling vent gas from an autoclave (103) is disclosed including cooling and cleaning a vent gas, introducing the cooled and cleaned resultant stream into a purification unit (109) to remove at ...  
WO/2014/183807A1
The invention relates to a method and a recovery system for obtaining raw materials from ores and/or ore tailings, in particular a method and a recovery system for recovering metals from ores and/or ore tailings, especially a method and ...  
WO/2014/183808A1
The invention relates to a method and a recovery system for obtaining/recovering metallic iron and/or iron compounds, in particular iron chloride, from ores and/or ore tailings, especially from pyrite tailings, preferably from roasted py...  
WO/2014/177765A1
The invention relates to a method for preparing a gold- containing solution by chloride leaching from gold-bearing raw materials. A further object of the invention is to provide a method for recovering gold and optionally silver from the...  
WO/2014/178586A1
The present invention relates to a method for recovering an acid and a platinum group metal from a leaching solution of a waste catalyst and, more particularly, to a method for recovering an acid and a platinum group metal from a leachin...  
WO/2014/175218A1
The present invention provides a method for collecting a valuable metal, which enables a medium- to high-concentration cyan waste fluid to be treated at low cost and in a simple manner, and also enables a so-called valuable metal, e.g., ...  
WO/2014/171370A1
The present invention extracts precious metals from an acidic solution containing precious metals in an early and highly efficient manner. Provided is an extraction agent for precious metals that is represented by the general formula bel...  
WO/2014/170676A1
The present invention relates to a process for treating an off-gas from the thermal processing of a precious-metal-containing feedstock, the process comprising: cooling the off-gas to a temperature of from 300 to 500˚C, passing the cool...  
WO/2014/172667A1
Methods for recovering gold from gold-bearing materials are provided. The methods rely upon on the self-assembly of KAuBr4 and α-cyclodextrin (α-CD) in aqueous solution to form a co- precipitate, a 1 :2 complex, KAuBr4•(a-CD)2 ("α...  
WO/2014/170727A1
A self-contained assay facility housed in a fixed-wing or rotary wing aircraft that is completely equipped to melt and assay precious metals, particularly gold and silver. An induction furnace melts the metal that is then poured into an ...  
WO/2014/169325A1
A process for recovering copper, uranium and one or more precious metals from an ore material, including: a. forming a heap of the ore material; b. subjecting the heap of the ore material to an acidic heap leach using an iron containing ...  
WO/2014/170448A1
A process for recovery of precious metals from ores or concentrates containing refractory carbonaceous material by cyanidation leaching. The process involves addition to the ores or concentrates at least one cationic surfactant before or...  
WO/2014/166494A1
A method for recovering platinum group metals from a catalytic structure, such as a fuel cell membrane electrode assembly, involving dissolution of the platinum group metal by treating the catalytic structure in an electrolytic cell with...  
WO/2014/168749A1
Recovering gold from gold-loaded fine carbon by application of thermo-kinetic chemical activation regime at a low temperature, while preventing vitrification of imputies found in the gold-loaded fine carbon.  
WO/2014/156351A1
 This method for recovering gold from gold ore containing pyrite comprises: a pretreatment step which includes a first step in which gold ore containing pyrite is prepared and a second step in which the gold ore is heated to a temperat...  
WO/2014/156349A1
 This method for recovering gold from sulfide ore comprises: a first step in which a first acidic solution containing chlorine ions, copper ions, and iron ions but not containing bromine ions is brought into contact with a sulfide ore ...  
WO/2014/155753A1
 Provided is a method for pretreatment of gold ore in order to leach out gold from gold ore containing pyrite, with which it is possible to suppress the generation of sulfide dioxide and to improve the leaching rate of gold. A method f...  
WO/2014/154945A1
In a method for recovering PGMs and ferrochrome from platinum group metals bearing chromite ore, a concentrate is prepared that contains most of PGMs and chromite of the ore and the concentrate is subjected to a heating step to dry and/o...  
WO/2014/156350A1
 This method for recovering gold from sulfide ore comprises: a first step in which sulfide ore or leach reside remaining after sulfide ore has been subjected to leaching is brought into contact with an acidic aqueous solution containin...  
WO/2014/155752A1
 Provided is a method for pretreatment of gold ore in order to leach out gold from gold ore containing pyrite using wet treatment, and with which it is possible to suppress the generation of sulfur dioxide and to improve the leaching s...  
WO/2014/156300A1
[Problem] To provide a simple, economic, and environment-friendly precious metal recovery method for recovering a precious metal from a used electronic device or the like. [Solution] A precious metal recovery method characterized in incl...  
WO/2014/153672A1
Described is a method of recovering a metal from a substrate having a metal sulphide, metal oxide, or combination thereof, by contacting the substrate with an aqueous oxidant to oxidize the metal sulphide to elemental sulphur and oxidize...  
WO/2014/148608A1
Provided are: a composition which exhibits low swelling properties, which comprises a hydrophilic polymer composition including an amine-based polymer, and which is stable in a wet state when packed into a column; a filter including the ...  
WO/2014/144805A1
A process for refining platinum group metals (PGM) first removes concentrations of base metals (BM) from the PGM through precipitation of the BM by increasing alkalinity in the dissolving aqueous solution. A large fraction of the aqueous...  
WO/2014/132419A1
In order to adsorb gold contained in metal sulfide ores on activated carbon with good efficiency, and to efficiently elute gold and silver adsorbed on the activated carbon, this method for eluting gold and silver is provided with: a step...  
WO/2014/132458A1
Provided is a method for leaching gold from gold ore containing pyrite. Said method for leaching gold includes a pretreatment step that includes a step (1) in which gold ore containing pyrite is prepared, and a step (2) in which the gold...  
WO/2014/124422A1
Methods described herein generally relate to the treatment of carbonaceous materials with ozone to facilitate the subsequent recovery of metal species (e.g., precious metals) from the carbonaceous material. In some cases, the method may ...  
WO/2014/122803A1
A method for leaching gold from a gold ore containing pyrite, in which the gold leaching rate is improved without requiring the use of a highly toxic chemical substance such as cyan, thiourea, thiosulfuric acid and a halogen gas. A metho...  
WO/2014/122363A1
The present invention relates to a method and an arrangement for pressure and temperature let down of autoclave discharge slurry, in particular in pressure oxidation or high pressure acid leach of metal containing ore. The method of the ...  
WO/2014/121150A1
A process for bio-oxidation of sulfides in mineral ore having a metal such as gold occluded or dispersed within the ore as a sulfide is disclosed. The first step comminutes the ore into particles with a size distribution having a P80 of ...  
WO/2014/119793A1
The present invention addresses the issues of providing: a novel separation method whereby metallic silver is separated from an aqueous phase, etc.; and a method whereby the form of the metallic silver to be extracted is controllable, wh...  
WO/2014/112637A1
The purpose of the present invention is to make it possible to easily concentrate a metal of a metal-ion-containing solution at a high efficiency and recover the metal from the metal-ion-containing solution at a high recovery efficiency....  
WO/2014/105944A1
Enzyme-based leaching agents for leaching metals from metal-containing ores. Methods for recovering metals from a metal-containing ores using such enzyme-based leaching agents are also described. Enzymes that are active under leaching co...  

Matches 101 - 150 out of 3,861