Class / Patent application number | Description | Number of patent applications / Date published |
423022000 | Platinum group metal (Ru, Rh, Pd, Os, Ir, or Pt) | 36 |
20080253948 | METHOD FOR THE RECYCLING AND PURIFICATION OF AN INORGANIC METALLIC PRECURSOR - Methods and apparatus for the recycling and purification of an inorganic metallic precursor. A first gaseous stream containing ruthenium tetroxide is provided, and transformed into a solid phase lower ruthenium oxide. This lower phase ruthenium oxide is reduced with hydrogen to form ruthenium metal. The ruthenium metal is contacted with an oxidizing mixture to produce a stream containing ruthenium tetroxide, and any remaining oxidizing compounds are removed from this stream through a distillation. | 10-16-2008 |
20080299024 | Method For Industrial Manufacture Of Pure MgCo3 From An Olivine Containing Species Of Rock - Method for industrial manufacture of pure MgCO | 12-04-2008 |
20090148361 | PROCESSES AND SYSTEMS FOR RECOVERING CATALYST PROMOTER FROM CATALYST SUBSTRATES - Processes and systems for recovering promoter-containing compounds, for example, perrhenates, from promoter-containing catalyst substrates, for example, substrates containing precious metals, such as silver, are disclosed. The processes include contacting the substrates with a first solution adapted to remove at least some of the catalyst promoter from the substrates, for example, an oxidizing agent, to produce a second solution containing catalyst promoter, passing the second solution through a porous medium adapted to capture at least some of the catalyst promoter, for example, a ion exchange resin; and passing a third solution, for example, a base solution, through the porous medium to remove at least some of the catalyst promoter from the porous medium and produce a fourth solution containing compounds having a catalyst promoter. Systems adapted to practice these processes are also disclosed. | 06-11-2009 |
20090191106 | PROCESSES AND DEVICES FOR REMOVING RUTHENIUM AS RuO4 FROM RUTHENATE-CONTAINING SOLUTIONS BY DISTILLATION - In processes for removing ruthenium by distilling RuO | 07-30-2009 |
20090191107 | PROCESSES FOR THE RECOVERY OF RUTHENIUM FROM MATERIALS CONTAINING RUTHENIUM ORRUTHENIUM OXIDES OR FROM RUTHENIUM-CONTAINING NOBLE METAL ORE CONCENTRATES - Processes for the recovery of ruthenium from materials containing ruthenium or ruthenium oxides or from ruthenium-containing noble metal ore concentrates, with the steps of
| 07-30-2009 |
20090208391 | PROCESSES FOR THE RECOVERY OF CATALYTIC METAL AND CARBON NANOTUBES - A new method for recovering a catalytic metal and carbon nanotubes from a supported catalyst is provided. The carbon nanotube, including carbon nanotube structures, may serve as the support for the catalytic metal. The valence state of the catalytic metal, if not already in the positive state, is raised to a positive state by contacting the supported catalyst with a mild oxidizing agent under conditions which does not destroy the carbon nanotube. The supported catalyst is simultaneously or subsequently contacted with an acid solution to dissolve the catalytic metal without dissolving the carbon nanotube. | 08-20-2009 |
20090257931 | METHOD OF RECOVERING NOBLE METALS AND RECOVERING SYSTEM FOR NOBLE METALS - A recovering method is provided, which includes contacting a solid component containing Ru with an aqueous solution to create a Ru compound, and causing the Ru compound to selectively elute in the aqueous solution. The aqueous solution is formed of at least one selected from the group consisting of aqueous solutions A, B, C, D, and E. The aqueous solution A comprises an acid and formic acid, alcohols, aldehydes, a compound having a hemiacetal structure or a compound having an acetal structure. The aqueous solution B comprises an acid and a compound which creates, in the coexistence thereof with the acid, formic acid, alcohols, aldehydes, a compound having a hemiacetal structure or a compound having an acetal structure. The aqueous solution C comprises an acid and sugars. The aqueous solution D comprises formic acid, and the aqueous solution E comprises oxalic acid. | 10-15-2009 |
20090274597 | Method and device for catchment of platinum group metals in a gas stream - This invention relates to a method and device for catchment of platinum group metals (PGM) in a gaseous stream, where the method comprises using a catalyst comprising a porous ceramic body in which at least a part of the surface area is covered by one or more PGM-catching metal(s)/alloy(s), and where the device comprises the porous ceramic body in which at least a part of the surface area is covered by one or more PGM-catching metal(s)/alloy(s). In a further aspect, the invention also relates to a method for producing the inventive device. | 11-05-2009 |
20090317313 | SULFIDISATION PROCESS AND APPARATUS FOR ENHANCED RECOVERY OF OXIDISED AND SURFACE OXIDISED BASE AND PRECIOUS METAL MINERALS - A method of treating value bearing material comprising oxidised or surface oxidised mineral values includes the steps of crushing the value bearing material, contacting the crushed material! with a sulfide solution to sulfide the oxidised or surface oxidised mineral values, and adding ions of a selected base metal to the crushed value bearing material. The value bearing material may comprise oxidised or surface oxidised base metal or precious metal minerals. The crushed value bearing material is prepared as a slurry or pulp comprising from 15% to 40% solids and the remainder comprising water. The sulfide solution preferably comprises a soluble sulfidiser such as sodium hydrosulfide and the base-metal ion solution preferably comprises metal salt of base metals like copper or iron. In a preferred embodiment of the method, the sulfide ion concentration in the slurry is measured with an ion-specific probe which measures the sulfide ion concentration as a potential, and the quantity of sulfidiser solution in the slurry is adjusted to maintain the measured sulfide ion concentration at or near the predetermined value. The invention extends to an installation for treating value bearing material according to the method. | 12-24-2009 |
20100055011 | METHOD FOR RECOVERING RUTHENIUM - An object of the present invention is to provide a process for recovering ruthenium at a sufficient recovery rate from a solid in which a ruthenium compound is supported on a carrier. The present invention relates to a process for recovering ruthenium, comprising the following steps (1) to (3): | 03-04-2010 |
20100080744 | PROCESS FOR ISOLATING METALLIC RUTHENIUM OR RUTHENIUM COMPOUNDS FROM RUTHENIUM-CONTAINING SOLIDS - The present invention relates to a process for mobilizing metallic ruthenium or ruthenium compounds from solids to form volatile ruthenium compounds by means of a gas stream containing a hydrogen halide and carbon monoxide, preferably hydrogen chloride and carbon monoxide, and for isolating the previously mobilized ruthenium compounds, preferably by deposition with cooling, e.g. in relatively cold zones, in particular on relatively cold surfaces, absorption in suitable solutions or adsorption on suitable support materials. | 04-01-2010 |
20100135875 | APPARATUS FOR REMOVING RUTHENIUM FROM SOLUTION CONTAINING PLATINUM GROUP METAL - The invention provides an apparatus for effectively removing ruthenium when ruthenium is removed from a solution containing platinum group metal by oxidation distillation. The invention provides an apparatus for selectively removing ruthenium from a solution containing ruthenium and other platinum group metal by adding an oxidizer to the solution to convert ruthenium into ruthenium tetroxide, wherein air is sucked into a reaction tank by reducing pressure within the reaction tank, and at least one outlet of the air is arranged in the apparatus such that the lowermost part thereof is located at the height of 5-20 m from the bottom of the reaction tank, whereby the solution within the reaction tank can be effectively stirred without ruthenium tetroxide, which has large specific gravity, being concentrated at the bottom of the reaction tank. | 06-03-2010 |
20100202944 | METHOD FOR PREPARING SAMPLES FOR QUANTITATIVELY AND QUALITATIVELY DETERMINING THE PRECIOUS METAL CONTENT IN PRODUCTS OF PROCESSING OF POTASSIUM AND MAGNESIUM ORES - The invention relates to analytical chemistry and technology for processing clay-salt waste (slurries) of potassium-processing factories. The inventive method is based on the analysis of the totality of tested material and consists in annealing the nanoparticles of precious metal (Au, Pt, Pd) organic compounds at a temperature ranging from 600 to 950° C. in the presence of a chloride agent in the form of potassium chlorides (KCl) or sodium chlorides (NaCl) and in producing the acid-soluble compounds of said metals. The sample is exposed to the entire cycle of technological conversion: 1) chloridising roasting; 2) leaching with weak mineral acid solutions; 3) sorption of precious metal compounds on the industrial sorbent AM-2B 4 from the solution obtained after leaching and 4) desorption. A tradeable solution obtained at the end of said cycle is analysed for precious metal content. Said invention makes it possible to use the test portion which is required for a given test stage as opposed to non-representative test portions of 3-30 g which are used for conventional analytical methods and to exclude the ‘misses’ of the tested material in the analysis. | 08-12-2010 |
20100215556 | NANOPORE REACTIVE ADSORBENTS FOR THE HIGH-EFFICIENCY REMOVAL OF WASTE SPECIES - A nanopore reactive adsorbent composite material, which may be a porous adsorbent comprising a chemically surface face modified gel, has a composition and micro structure, which integrals ion exchange components such as hydroxy apatite. | 08-26-2010 |
20100226838 | PROCESS FOR THE REMOVAL OF CATALYST DEGRADATION PRODUCTS - The present invention relates to a process for the removal of metal catalyst degradation products from a bleed stream of a catalytic chemical reaction process, wherein the catalyst is based on a metal selected from those in group VIII of the periodic table, chromium, copper, molybdenum, tungsten, rhenium, vanadium, titanium and zirconium, said process comprising treatment of the bleed stream with an alkali metal carbonate or ammonium carbonate source to form a solid complex or an aqueous solution of said solid complex, and removal of the solid complex or the aqueous solution of said solid complex from the bleed stream. | 09-09-2010 |
20100290962 | FUNCTIONALISED MATERIALS AND USES THEREOF | 11-18-2010 |
20110123418 | Process for Forming High Density Sulfides - A process for the recovery of a metal sulfide from a metal ion containing solution, including the steps of: a) providing a slurry containing seed panicles of said metal sulfide; h) adding a sulfide ion containing solution to said slurry to form an activated seed slurry; c) mixing said activated seed slurry with said metal ion containing solution to thereby form a metal sulfide precipitate; and d) recovering said metal sulfide precipitate. | 05-26-2011 |
20110165041 | PROCESSESS FOR THE RECOVERY OF RUTHENIUM FROM MATERIALS CONTAINING RUTHENIUM OR RUTHENIUM OXIDES OR FROM RUTHENIUM-CONTAINING NOBLE METAL ORE CONCENTRATES - Processes for the recovery of ruthenium from materials containing ruthenium or ruthenium oxides or from ruthenium-containing noble metal ore concentrates, with the steps of
| 07-07-2011 |
20110176978 | METAL RECOVERY FROM HYDROCONVERTED HEAVY EFFLUENT - A metal recovery process, for heavy products from a hydroconversion process, containing unconverted residue and a solid carbonaceous material containing the group 8-10 metal, the group 6 metal, and vanadium and/or nickel, is provided by the invention. | 07-21-2011 |
20110229384 | CONCENTRATE QUALITY IN THE ENRICHMENT OF UG-2 PLATINUM ORE - The present invention relates to a process for separating at least one first substance from a mixture comprising this at least one first substance and at least one second substance, comprising the steps of (A) bringing the mixture comprising at least one first substance and at least one second substance into contact with at least one surface-active substance, (B) if required, addition of at least one dispersing medium to the mixture obtained in step (A) in order to obtain a dispersion, and (C) separation of the adduct of at least one first substance and at least one surface-active substance from the dispersion from step (A) or (B), for example by means of flotation, at least one additive which is either a monomolecular compound comprising amino and carboxyl groups or derivatives thereof or a polymeric compound obtainable by reaction of alkylene oxides and/or aziridines, or mixtures thereof, being added to the mixture comprising at least one first substance and at least one second substance. | 09-22-2011 |
20110274598 | SUSTAINABLE RECOVERY OF METAL COMPOUNDS - Disclosed is a process for removing metals from waste, particularly electronic waste (or “e-waste”). The process generally includes the steps of dissolving at least some of the metals from the waste with nitric acid reagent and then causing at least some of the metals to precipitate as metal oxides and/or metal nitrates. NOx gases produced as by-product by the nitric acid dissolution of metallic components in the electronic waste are reused, in particular for generating permanganate when one of the metallic components comprises manganese. | 11-10-2011 |
20110286898 | PROCESS FOR RECOVERING RUTHENIUM FROM USED RUTHENIUM OXIDE-COMPRISING CATALYSTS - The invention relates to a process for recovering ruthenium from a used ruthenium-comprising catalyst which comprises ruthenium as ruthenium oxide on a support material which is not readily soluble in mineral acid, which comprises the steps: | 11-24-2011 |
20120164039 | PALLADIUM ION ADSORBENT AND METHODS FOR SEPARATING AND RECOVERING PALLADIUM USING IT - To provide a solid-liquid palladium ion adsorbent which has both extraction performance and selectivity of a liquid-liquid palladium extracting agent in a conventional solvent extraction method and which does not require use of an organic solvent, and methods for selectively separating and recovering palladium, using it. | 06-28-2012 |
20130078166 | METHOD FOR RECOVERING RHENIUM AND OTHER METALS FROM RHENIUM-BEARING MATERIALS - A method of recovering rhenium (Re) and other metals from Re-bearing materials in the form of ammonium perrhenate having at least the step of adding Re-bearing materials into a leaching slurry. Additionally, the method has the step of adjusting the pH of the slurry to obtain Re in soluble form in a metal salt solution and insoluble residues; filtering the metal salt solution to remove the insoluble residues; selectively precipitating Re from the metal salt solution; and filtering the Re precipitate from the metal salt solution to obtain a Re filtercake. The method further has the step of drying and formulating Re to produce Re sulfide product. | 03-28-2013 |
20130089477 | Method and Apparatus for Recovering Rare Metal - Disclosed is a method and apparatus for recovering rare metal, 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 work safety. The method for recycling rare metals includes a leaching step in which a rare metal of palladium, platinum, and rhodium is mixed with hydrochloric acid into a hydrochloric acid mixture, which is then stirred at one atmospheric pressure or lower at a temperature from 50 to 90 degrees Centigrade. The vapor resulting from the stirring is condensed, and the hydrochloric acid resulting from the condensing is fed back to the original hydrochloric acid mixture to produce a hydrochloric acid leaching solution. The hydrochloric acid leaching solution produced in the leaching step is used to collect the rare metals. | 04-11-2013 |
20130149219 | SEPARATION OF IRON FROM VALUE METALS IN LEACHING OF LATERITE ORES - The invention provides a process for the leaching of a laterite ore, concentrate, tailings or waste rock for the recovery of value metals, at least one value metal being nickel. The laterite ore or concentrate is subjected to a leaching step with a lixiviant comprising hydrochloric acid to leach nickel from the laterite ore, followed by a liquid/solids separation step. The liquid obtained is subject to solvent extraction with a dialkyl ketone, to obtain a solution rich in iron and a raffinate. Separation of iron from cobalt and nickel is obtained. | 06-13-2013 |
20130177487 | UPGRADING OF PRECIOUS METALS CONCENTRATES AND RESIDUES - 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 is exposed to oxygen or an oxygen-containing environment in an oxidative pre-treatment step followed by treatment with a hydrochlorinating agent in a hydrochlorination step to form an upgraded concentrate or residue. | 07-11-2013 |
20130315803 | LIQUID-LIQUID-LIQUID THREE-PHASE CONTINUOUS COUNTERCURRENT EXTRACTION DEVICE AND USE THEREOF - A liquid-liquid-liquid three-phase continuous and countercurrent extraction apparatus comprises a three-phase-mixing chamber, a three-liquid-flow settler, and a two-phase-mixing chamber; a liquid-flow control separator placed in the three-liquid-flow settler aims to flexibly regulate the directions of three liquid flows in the three-phase system by different control separator combinations to achieve either a countercurrent operation of the top-layered phase with the middle-bottom two-layered mixtures, or a countercurrent operation of the top-middle two-layered mixtures with the bottom-layered phase; and a method of using the same, relating to extraction and separation field of chemical technology. | 11-28-2013 |
20130330255 | METHOD FOR COLLECTION OF RUTHENIUM OR RUTHENIUM COMPOUND - According to the present invention, ruthenium or a ruthenium compound, which is expensive, can be collected with high efficiency even from an aqueous solution containing a water-soluble salt, a lower alcohol, an organic acid or the like, by adding at least one specific inorganic adsorbent to an aqueous solution containing ruthenium or the ruthenium compound, dissolving the entirety or a part of the inorganic adsorbent under an acidic condition, and then adding an alkali to adjust the solution to be an alkaline solution having a pH value of 7 or higher, thereby depositing the inorganic adsorbent while causing the inorganic adsorbent to adsorb ruthenium or the ruthenium compound. | 12-12-2013 |
20140147353 | COMPOSITIONS AND METHODS FOR THE SEPARATION OF METALS - Methods and compositions are described for preparing metal salts and selectively separating metals from substrates and other metals. The methods can include a thionyl reagent that reacts with a metal in a solution to produce a metal salt. The reaction can be controlled by varying reagents and conditions such that the method can be used to selectively separate one or more metals from another metal or from a substrate. The method can also be used for removing metals from a surface. Compositions produced by the method are also described. | 05-29-2014 |
20140154156 | RECOVERY OF REUSABLE OSMIUM TETROXIDE - The present invention enables simple production of osmium tetroxide having comparable performance to that sold in reagents from a solution containing osmium. The present invention relates to a method for producing osmium tetroxide solution, the method comprising a step for using ozone or a similar oxidizing gas to oxidize a solution containing osmium and produce osmium tetroxide gas and a step for introducing the resulting osmium tetroxide gas into a recovery solution; the present invention further relates to a production apparatus therefor. | 06-05-2014 |
20140248198 | PALLADIUM SEPARATING AGENT, METHOD FOR PRODUCING SAME AND USE OF SAME - To provide a palladium separating agent capable of separating palladium ions from a solution containing palladium ions of a low concentration to a high concentration in a short time with a high selectivity, and a method for separating palladium. | 09-04-2014 |
20140369905 | METHOD FOR PREPARING SOLID RUTHENIUM NITROSYL NITRATE - A method for preparing solid ruthenium nitrosyl nitrate, including : 1) drying a ruthenium-containing spent catalyst, and calcining the spent catalyst, and cooling to room temperature, whereby yielding a ruthenium-containing solid; 2) grinding the ruthenium-containing solid to yield a powder, introducing the powder to a fluidized bed reactor, aerating the fluidized bed reactor with nitrogen or an inert gas, charging hydrogen, whereby yielding ruthenium metal; 3) contacting a mixed gas of ozone and air with the ruthenium metal, whereby yielding gaseous ruthenium tetroxide; 4) introducing the gaseous ruthenium tetroxide into a three-stage absorption plant, whereby yielding an acid solution including ruthenium nitrate; 5) adding a solid of sodium nitrite to the acid solution, stirring, and heating a resulting solution, whereby yielding a solution of ruthenium nitrosyl nitrate; and 6) extracting the solution of ruthenium nitrosyl nitrate with anhydrous ether. | 12-18-2014 |
20140377151 | PROCESS FOR RECOVERY OF COBALT, RUTHENIUM, AND ALUMINUM FROM SPENT CATALYST - A method for recovering cobalt, ruthenium, and aluminum from spent Co—Ru/Al | 12-25-2014 |
20160115566 | PROCESS FOR PREPARING A SPENT CATALYST FOR PRECIOUS METALS RECOVERY - A process is provided for preparing a spent noble metal fixed-bed catalyst for precious metals recovery, comprising: a) adding the catalyst to a caustic solution to wash the spent catalyst and to make a wash slurry having an alkaline pH, wherein the spent catalyst has been in contact with chloroaluminate ionic liquid catalyst, and wherein the spent catalyst comprises from 5 to 35 wt % chloride; and b) filtering the wash slurry and collecting: i) a filter cake having from at least 70 wt % of the chloride in the spent catalyst removed and having the noble metals retained, and ii) a wash filtrate. Also provided is a filter cake comprising a washed consolidated cake having 40 to 75 wt % solids, a cake moisture content from 25 to less than 60 wt %, 0.1 to 1.5 wt % total noble metals, and a residual chloride content of from zero to less than 4 wt %. | 04-28-2016 |
20160115567 | METALLURGICAL EXTRACTION TECHNIQUE TO RECOVER PLATINUM GROUP METALS FROM A FILTER CAKE - This application provides a metallurgical extraction technique, comprising:
| 04-28-2016 |