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WO/2012/151721A1 |
A wet process for pre-treating carbonaceous refractory gold concentrate ores comprises the following steps: grinding the gold concentrate ores to a granularity of -0.074 mm with a mass content of 90-100% by ore mill, then adjusting the s...
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WO/2012/149631A1 |
The present invention relates to methods for recovering precious metals including silver and gold, rare metals including indium and gallium, base metals including copper, lead and zinc or a combination of precious, rare and base metals f...
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WO/2012/149264A1 |
The present invention relates to a process for recovery of a precious metal catalyst from an organosilicon product-containing liquid reaction medium containing precious metal catalyst.
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WO/2012/141607A1 |
The present invention relates to a process for chemical extraction of gold and silver from low grade and refractory pyritic concentrates containing minimum 1 ppm Au, by their leaching in enamelled cast iron reactors, steel plated lead or...
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WO/2012/140128A1 |
The invention relates to the provision of noble metal- containing mixtures for a process for processing them by heating the mixture, preferably for processing them by means of an ashing process. This provision is characterized by the fol...
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WO/2012/124565A1 |
Provided is a method in which predetermined metals of platinum group metals existing in a copper phase are unevenly distributed in the copper phase. To increase the ratio of rhodium distributed in a molten copper phase, additional copper...
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WO/2012/121495A2 |
The present invention relates to a method for recovering a precious metal (palladium) after a polyketone polymerization reaction, and comprises the steps of: (a) generating a first reaction waste liquid by filtering the polyketone produc...
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WO/2012/121496A2 |
The present invention leaches platinum groups from industrial waste containing platinum group metals (platinum (Pt), ruthenium (Ru), osmium (Os), rhodium (Rh), iridium (Ir), palladium (Pd)), adsorbs onto an absorbent platinum group metal...
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WO/2012/114165A1 |
This invention relates to an energy efficient process for recovering Base Metals and Precious Metals from ore or concentrate, the process including the steps of constructing a heap (10) comprising ore and/or concentrate containing Base M...
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WO/2012/111563A1 |
Provided is a method that is for recovering platinum group elements from an SiC-based substance and that reduces the temperature at which the SiC-based substance homogeneously melts in slag. The method, which is for recovering platinum g...
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WO/2012/111542A1 |
According to the present invention, it becomes possible to collect ruthenium or a ruthenium compound, which is expensive, with high efficiency even from an aqueous solution containing a water-soluble salt, a lower alcohol, an organic aci...
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WO/2012/108522A1 |
Provided is a method for recovering PGM from a material to be processed that contains PGM. Specifically provided is a method for recovering PGM from a material to be processed that contains PGM, which comprises: a reduction smelting step...
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WO/2012/104806A1 |
This invention relates to a process in which a Platinum Group Metal (PGM)-rich residue from a BMR (Base Metals Refinery) process is subjected to a high temperature roast to remove contaminants, typically volatile elements (for example Se...
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WO/2012/099009A1 |
Provided is a method for suppressing distribution of PGM to Cu2O slag in oxidation smelting in a method for recovering PGM. Specifically provided is a method for recovering PGM, which comprises: a reduction smelting step wherein a member...
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WO/2012/091125A1 |
Provided are a method for collecting precious metals from a solution containing precious metal ions, an extractant or adsorbent used therefor, and a back extractant or a desorbent. Precious metals are obtained by subjecting a solution co...
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WO/2012/079129A1 |
Disclosed is a process for extracting gold ions from an aqueous phase containing gold ions. The process comprises contacting the aqueous phase with an extractant phase consisting of or comprising an ionic liquid (IL) under liquid-liquid ...
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WO/2012/080558A1 |
The present invention concerns a process and a plant for treating ore concentrate particles containing valuable metal and having at least arsenic and sulfur containing components. The process comprises a two-stage roasting process compri...
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WO/2012/079283A1 |
Disclosed are a mineral-dressing agent for noble metals and preparation method thereof. The method comprises introducing mixed potassium ferrocyanide and urea into a reactor, adding pH adjusting agent while being subjected to slow heatin...
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WO/2012/078768A1 |
A washer for a particulate material comprises, in accordance with some embodiments of the invention, a chamber 20, 220 adapted for retaining a fluidization medium 130; an inlet 22, 222 adapted for receiving a feed containing particulate ...
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WO/2012/078274A2 |
Nanomaterial preparation methods, compositions, and articles are disclosed and claimed. Such methods can provide nanomaterials with improved morphologies relative to previous methods. Such materials are useful in electronic applications.
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WO/2012/076981A1 |
A method and system are provided in which a gold and/or silver-collecting resin-in-leach or resin-in-pulp circuit comprises both co-current and counter-current sections, specifically in thiosulfate leach systems.
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WO/2012/078283A2 |
Nanomaterial preparation methods, compositions, and articles are disclosed and claimed. Such methods can provide nanomaterials with improved morphologies relative to previous methods. Such materials are useful in electronic applications.
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WO/2012/078275A2 |
Nanomaterial preparation methods, compositions, and articles are disclosed and claimed. Such methods can provide nanomaterials with improved morphologies and reduced nitric oxide co-production relative to previous methods. Such materials...
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WO/2012/074255A2 |
The present invention pertains to an apparatus for recovering precious metals and components from a PCB substrate, in which the apparatus comprises: a rotating unit which includes a PCB substrate fixed to the rotating unit with electroni...
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WO/2012/071342A2 |
The present invention is directed to a precious metal recovery process in which an acid sulfidic feed material is subjected to acid pressure oxidation and an alkaline sulfidic feed material is subjected to alkaline pressure oxidation, wi...
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WO/2012/060417A1 |
Provided are: a capsule for non-ferrous metal collection that can collect a non-ferrous metal; and a method for collecting a non-ferrous metal using same. The capsule for non-ferrous metal collection comprises capsule contents and a cove...
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WO/2012/053915A1 |
The present invention relates to a process of gold and copper recovery from gold-containing copper ores obtained from mixed oxide-sulfide copper ore bodies by a series of flotation stages. More specifically, the present invention relates...
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WO/2012/034255A1 |
A method for extracting gold coated by gangue comprises the following steps: grinding and classifying gold ore to obtain ore pulp; oxidizing and decomposing sulphide minerals and gangue in the ore pulp to fully expose and dissociate gold...
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WO/2012/031379A1 |
A method for extracting gold through low-temperature roasting is provided. The method includes the following steps: feeding the material to be roasted into a roasting furnace through feeder, uniformly supplying gas for the material layer...
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WO/2012/029379A1 |
A high purity platinum recovery method for obtaining a platinum sponge by dissolving a platinum alloy containing ruthenium in aqua regia, removing the residue and then reacting the acid wherein platinum is dissolved and an ammonium chlor...
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WO/2012/024603A2 |
Processes for recycling electronic components removed from printed wire boards, whereby precious metals and base metals are extracted from the electronic components using environmentally friendly compositions. At least gold, silver and c...
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WO/2012/012011A1 |
A process for the recovery of metals (hereinafter PM) from solids includes dissolving the PM and base metals in acid. The PM are precipitated using substituted quaternary ammonium salts (hereinafter SQAS). The PM may be oxidized or reduc...
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WO/2012/008453A1 |
Disclosed is a rotary kiln provided with a rotary furnace in which an object to be treated containing a metal is burnt, an electric furnace which is connected to the rotary furnace via a connecting portion and which separates the metal f...
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WO/2011/160179A1 |
A method (10) for the pretreatment and separation of metals from cyanide containing solutions, the method characterised by the step of: directing a feed stream (12) containing cyanide, particulate matter and metal values to a pre-treatme...
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WO/2011/161597A1 |
A process for upgrading a precious metals-containing concentrate or residue results in near-quantitave removal of base metals and several impurity elements at elevated temperatures. The precious metals- containing concentrate or residue ...
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WO/2011/156861A1 |
A method of recovering a metal, such as a noble metal, from an impure source material by contacting the source material with a leach solution comprising a metal halide, an oxidant and an acid. The leach solution containing the target met...
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WO/2011/154607A1 |
A process for recovering gold from gold-bearing raw material is provided. The method comprises a step of leaching the raw material in leach solution comprising thiosulphate anions and trace amount of thallium ions.
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WO/2011/154603A1 |
The invention relates to a method for recovering gold by solvent extraction from an acidic chloride-containing aqueous solution or from slurry containing gold-bearing solids using a diester-based reagent that is poorly soluble in water a...
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WO/2011/150984A1 |
Method for the recovery of noble metals comprising the steps of subjecting ore particles to an electrolytic bath (1) enhanced by an ultrasonic bath (2), the electrolytic bath (1) comprising heavy and/or semi-heavy water; shock heating th...
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WO/2011/147151A1 |
A method for non-cyanide recycling waste circuit board (1), comprises the following steps: mechanical crushing (2) waste circuit board (1), separating crude copper powder (4) from nonmetal powder through gravity separation (3), smelting ...
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WO/2011/145760A1 |
In the circulation of electrolyte in a vertical-cylinder-type electrolyzer having a three-dimensional filling cathode made of active carbon granules and a fixed granular catalyst layer, the leaching and precipitation of a precious metal ...
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WO/2011/140593A1 |
There is provided a process for extracting platinum group metals from a platinum group metal-containing material, in particular spent automotive catalyst. The process involves roasting said material under oxidative conditions and further...
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WO/2011/139436A1 |
A system for processing ores is provided. The system includes a bubble collapse mill and a control system that interacts with an external system to evaluate and manipulate the processing of an ore.
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WO/2011/135184A1 |
A method for recovering valuable metals, such as lead, silver and gold from the residue of an electrolytic zinc process, wherein the residue from the zinc process is suspended and sulfidized for converting the lead and silver compounds i...
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WO/2011/135991A1 |
Disclosed is a valuable metal recovery method that has excellent valuable metal selectivity and recovery efficiency, and furthermore is capable of reusing materials that were used in the recovery of a valuable metal. The valuable metal r...
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WO/2011/132740A1 |
Disclosed is a system and method for recycling rare metals, which separates and collects rare metals by making use of chemical actions in an efficient combination of adsorption and separation, thereby reducing work load and improving wor...
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WO/2011/130790A1 |
A method of smelting a gold rich source material in a crucible comprising: i) adding a fluxing agent to the crucible; ii) heating the fluxing agent in the crucible to provide an initial molten fluid pool of fluxing agent in the crucible;...
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WO/2011/128061A1 |
The invention relates to a treatment and use involving a metal scavenger, such as functionalised organic or inorganic material, and a process to selectively remove specific metal ions and complexes from a stream containing a range of met...
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WO/2010/058188A9 |
The present invention relates to a method, and apparatus for the recovery of precious metals. Accordingly, it provides a continuous process for obtaining a precious metal composition from a feedstock material, the process comprising the ...
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WO/2011/100821A1 |
The present invention relates to a process and system for recovery of gold from an ore comprising the steps of i) providing the ore containing the gold to be recovered, ii) leaching the ore in an oxidative chloride medium, comprising a n...
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