Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 101 - 150 out of 3,778

Document Document Title
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...  
WO/2014/092220A1
The present invention relates to manufacturing silver nanowires having a diameter less than 100 nanometers and a length of 10 microns or more, and more particularly, to a method for uniformly manufacturing silver nanowires having a high ...  
WO/2014/092133A1
Provided are: a separating agent and a platinum ion separation method that enable platinum ions to be separated from a solution containing low to high concentrations of platinum ions in a short time and with high selectivity; and a separ...  
WO/2014/090260A1
A zinc precipitation circuit is disclosed. The circuit comprises a vessel configured to carry clarified pregnant solution comprising a dissolved precious metal, the vessel further comprising means for delivering zinc particles; a precipi...  
WO/2014/091456A1
This invention relates to a method of recovering platinum group metals (PGMs - ruthenium, rhodium, palladium, osmium, iridium, platinum and gold) and (if present) base metals (especially copper, nickel and cobalt) from PGM-containing mat...  
WO/2014/069463A1
Provided is a method for collecting silver having high purity from an acidic aqueous solution containing iron and/or zinc and silver using a simple apparatus and with high efficiency. A method for collecting silver, comprising separating...  
WO/2014/068642A1
The purpose of the present invention is to provide a metal refining device that can improve the recovery efficiency in metal refining. The metal refining device is a metal refining device that recovers metal material constituting an elec...  
WO/2014/069474A1
Provided are: a graft copolymer which enables a large amount of introduction of an adsorptive functional group that adsorbs a metal and the like; a method for producing this graft copolymer; and an adsorbent material which uses this graf...  
WO/2014/064530A1
A method to recover gold lost in roaster calcine-leach tailings, due to the formation of cyanide refractory compounds or morphologies during the roasting process. The process can include acid leaching of magnetic concentrate from roaster...  
WO/2014/062289A1
A process for the recovery of gold from a gold-bearing aqueous filtrate, the process comprising the steps of: (A) Contacting the aqueous filtrate with dibutyl carbitol (DBC) in a two-stage solvent extraction process to remove the gold fr...  
WO/2014/056034A1
A method for recovery of gold from a gold-containing, refractory pyrite-rich ore or concentrate is disclosed. The method results in the production of a high grade, gold-containing solid intermediate concentrate. One embodiment comprises ...  
WO/2014/053705A1
The invention relates to a method of recovering silver and a method of controlling a leaching process for recovering silver from a direct zinc leach residue, an apparatus for recovering silver from a direct zinc leach residue, a control ...  
WO/2014/042131A1
Provided is a method for recovering gold with which it is possible to increase the amount of gold adsorbed by activated carbon. This method for recovering gold comprises: a step for obtaining a gold leachate by using an acidic leaching s...  
WO/2014/038236A1
The present invention improves the leaching speed of gold while also inhibiting the generation of sulfur dioxide in a method for leaching gold from gold ore containing pyrite without using highly poisonous chemicals such as cyanogen, thi...  
WO/2014/038048A1
A method for recovering precious metal held in a metal carrier catalyst from said catalyst, that includes a step (1) in which the catalyst is heated in a nitric acid solution, and a step (2) in which the post-step (1) catalyst is heat tr...  
WO/2014/036261A1
Described herein are methods of making metallic or elemental silver. These methods generally include a step of forming a reaction dispersion that includes a silver-containing compound, an organic acid, and a solvent that includes an alco...  
WO/2014/036228A1
Described herein are methods of making metallic or elemental silver in the solid state. These methods generally include a step of forming an at least substantially solvent-free solid state reaction mixture that includes a silver-containi...  
WO/2014/009928A1
This invention relates to a hydrometallurgical process for extracting platinum group metals (PGMs), gold, silver and base metals from a flotation concentrate (10) containing sulphide minerals such as pentlandite and chalcopyrite, along w...  
WO/2013/191269A1
An activated carbon for adsorbing a noble metal from an aqueous solution containing a noble metal, wherein the difference (absolute value) between the zeta-potential in a 10-mmol/L aqueous solution of sodium tetraborate, and the zeta-pot...  

Matches 101 - 150 out of 3,778