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US20120304827 METHODS AND SYSTEMS FOR RECOVERING RHENIUM FROM A COPPER LEACH  
Various embodiments provide new methods of rhenium recovery. The methods can include subjecting a metal-bearing solution to an activated carbon bed, and adsorbing rhenium onto the activated...
US20150082943 PROCESS FOR PREPARING A FERRIC NITRATE REAGENT FROM COPPER RAFFINATE SOLUTION AND USE OF SUCH REAGENT IN THE LEACHING AND/OR CURING OF COPPER SUBSTANCES  
This invention relates to a process for preparing a ferric nitrate (Fe(NO3)3) reagent, capable of serving as a solvent and copper species oxidizing agent in the ore curing, heap leaching, and/or...
US20130247719 HEAP LEACHING  
A heap of a material to be leached to recover a valuable metal from the material and a method of constructing the heap are disclosed. The heap comprises sides and a top and a system to control air...
US20110107877 REMEDIAL HEAP TREATMENT  
A system and method are disclosed for improving component extraction from heap leach operations. Following heap leaching for some time, portions of the heap deficient in component extraction are...
US20150232963 Heap Leaching Method  
A process of extracting copper from copper sulphide minerals which is enhanced at solution potentials exceeding 700 mV SHE, in the absence of any microorganism, by contacting the minerals in a...
US20150122084 METHOD OF RECOVERING RARE EARTH ELEMENTS FROM OXIDIZED SCRAP OF PERMANENT MAGNET  
Disclosed is a method of recovering a rare earth element from oxidized scrap of permanent magnet. The method includes leaching an oxidized scrap of a permanent magnet from a sulfuric acid...
US20080196546 Use of Non-Ionic Surfactants In the Production of Metals  
A composition for cyanide leaching which comprises at least one nonionic surfactant and a process for extracting metals using the abovementioned composition are described.
US20130118310 METHODS AND SYSTEMS FOR RECOVERING RHENIUM FROM A COPPER LEACH  
Various embodiments provide new methods of rhenium recovery. The methods can include subjecting a metal-bearing solution to an activated carbon bed, and adsorbing rhenium onto the activated...
US20070186724 Remedial heap treatment  
A system and method are disclosed for improving component extraction from heap leach operations. Following heap leaching for some time, portions of the heap deficient in component extraction are...
US20140283652 RARE EARTH ELEMENT RECOVERY METHOD  
Provided is a method of recovering rare-earth elements, including causing rare-earth elements particularly including Nd and Dy to leach efficiently from a raw material for leaching which contains...
US20130236378 Selective Recovery of Manganese and Zinc From Geothermal Brines  
This invention relates to a method for the selective recovery of manganese and zinc from geothermal brines that includes the steps of removing silica and iron from the brine, oxidizing the...
US20120152064 CHEMICAL AGENTS FOR LEACHING POLYCRYSTALLINE DIAMOND ELEMENTS  
The disclosure provides to a PDC element protective system including a mask configured to protect a non-leached portion of a leached polycrystalline diamond compact (PDC) element during a leaching...
US20120060651 CONTROLLED COPPER LEACH RECOVERY CIRCUIT  
The present invention relates generally to a process for controlled leaching and sequential recovery of two or more metals from metal-bearing materials. In one exemplary embodiment, recovery of...
US20110277593 CONTROLLED COPPER LEACH RECOVERY CIRCUIT  
The present invention relates generally to a process for controlled leaching and sequential recovery of two or more metals from metal-bearing materials. In one exemplary embodiment, recovery of...
US20130333524 METHOD FOR LEACHING COPPER OXIDE, REPLACING SULFURIC ACID WITH A NON-POLLUTING ORGANIC LEACHING AGENT  
The invention relates to a method for leaching copper oxide without using sulfuric acid, comprising the following steps consisting in: impregnating the copper oxide using a non-polluting organic...
US20130074655 METHOD AND A SYSTEM FOR GOLD EXTRACTION WITH HALOGENS  
The invention relates to a method for the extraction of precious metals, using halogens. It has been found that introducing halogens in the reactor in the form of hypohalites rather than free...
US20140144292 INDIUM RECOVERY METHOD  
According to the present invention, there is provided an indium recovery method for recovering indium from an indium-containing product, including a leaching step of allowing indium to leach into...
US20140311297 COMPOUNDS AND METHODS TO ISOLATE GOLD  
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...
US20130192424 METHOD FOR TREATING A SOLUTION CONTAINING ZINC SULPHATE  
The invention relates to a method for treating a solution containing zinc sulphate, so that at least one of the rare metals such as indium, gallium and germanium can be separated from it. A...
US20110229366 METHOD FOR RECOVERING RHENIUM AND OTHER METALS FROM RHENIUM-BEARING MATERIALS  
The present invention relates to a method of recovering rhenium (Re) and other metals from Re-bearing materials.
US20090272230 Recovery of Rare Earth Elements  
A process for recovering rare earth elements from a composite ore containing rare earth elements that includes a monazite group mineral and an apatite mineral, includes pre-leaching the composite...
US20140311296 METHOD FOR LEACHING A SULPHIDIC METAL CONCENTRATE  
A method for leaching a sulfidic metal concentrate in hydrometallurgical production of metal in a leaching process from which hot water vapor containing off-gas is conducted out and to which an...
US20080066576 Methods for Recovering Refractory Metal from Wheel Grinding  
A refractory metal recovery method includes applying a coolant to a wheel grinding operation at a total rate exceeding a total rate at which the coolant evaporates and distributing the coolant...
US20130269484 VALUABLE METAL LEACHING METHOD, AND VALUABLE METAL COLLECTION METHOD EMPLOYING THE LEACHING METHOD  
The present invention provides a valuable metal leaching method and a valuable metal collection method, in each of which valuable metals can be leached efficiently, the amount of a reducing agent...
US20130192425 METHOD FOR RECOVERING VALUABLE METALS FROM LITHIUM SECONDARY BATTERY WASTES  
Valuable metals such as cobalt, nickel, manganese, and lithium can be economically recovered from various lithium secondary battery-related wastes by the inventive method which comprises...
US20140260806 SYSTEMS AND METHODS FOR IMPROVED METAL RECOVERY USING AMMONIA LEACHING  
Systems and methods for basic leaching are provided. In various embodiments, a method is provided comprising leaching a slurry comprising a copper bearing material and an ammonia leach medium,...
US20090241734 METHOD OF LEACHING COPPER SULFIDE ORES CONTAINING CHALCOPYRITE  
An object of the present invention is to provide a method of recovering copper from primary copper sulfide ores containing chalcopyrite as a main constituent under versatile conditions for real...
US20090056500 RESIN-IN-LEACH PROCESS TO RECOVER NICKEL AND/OR COBALT IN ORE LEACHING PULPS  
A hydrometallurgical resin-in-leach (RIL) process for directly recovering nickel and/or cobalt. Simultaneous pulp leaching by adding an acid or base, dissolves the metals of interest with...
US20140116202 METHOD FOR IMPROVING THE REDUCTION DEGREE IN THE SMELTING OF FERROALLOY  
The invention relates to a method for improving the reduction degree of metal components in a chromite concentrate when smelting ferroalloy suitable for manufacturing of stainless steel. The...
US20120042748 PURIFICATION PROCESS FOR 153Gd PRODUCED IN NATURAL EUROPIUM TARGETS  
An alteration of the traditional zinc/zinc-amalgam reduction procedure which eliminates both the hazardous mercury and dangerous hydrogen gas generation. In order to avoid the presence of water...
US20090173188 Chloride Heap Leaching  
A heap leaching method to recover copper from a primary copper sulphide mineral wherein the mineral is leached in an acidic chloride/sulphate solution in the presence of oxygen with the surface...
US20140260807 SYSTEMS AND METHODS FOR IMPROVED METAL RECOVERY USING AMMONIA LEACHING  
Systems and methods for basic leaching are provided. In various embodiments, a method is provided comprising leaching a slurry comprising a copper bearing material and a leach medium comprising...
US20120204680 System and Method for Recovery of Nickel Values From Nickel-Containing Ores  
A method is provided for extracting nickel values from nickel-containing ores. The method comprises (a) treating a nickel-containing ore with an acid, thereby producing an acid treated ore; (b)...
US20060090602 Heap leaching  
A method of leaching a metal value from a heap of a metal-containing ore and a heap leaching operation are disclosed. The method includes establishing a downward flow of a leach liquor through a...
US20060248983 Heap leach  
An improved heap leach process for the bacterial heap leaching of base metal sulphide ores, the process including the addition of elemental sulphur to the ore, whereby sulphur oxidising bacteria...
US20130239752 METHOD OF LEACHING COPPER ORE  
Provided is a method of leaching copper ore which contains chalcopyrite, the method includes a first leaching stage based on an oxidative leaching reaction of copper by iron (III) ion, and a...
US20110056331 LEACHING PROCESS FOR COPPER CONCENTRATES CONTAINING ARSENIC AND ANTIMONY COMPOUNDS  
A method of recovering copper from a copper sulfide concentrate comprising a copper arsenic sulfosalt or a copper antimony sulfosalt, using pyrite as a catalyst. The concentrate and pyrite are...
US20070209481 Process for extraction of nickel, cobalt, and other base metals from laterite ores by using heap leaching and product containing nickel, cobalt, and other metals from laterite ores  
The present invention embodies a process for extraction of nickel, cobalt, and other metals from laterite ores by heap leaching, and of the product obtained as well, characterized by the fact that...
US20120318102 METHOD FOR ENHANCING SOLID-LIQUID SEPARATION IN CONJUNCTION WITH LATERITE LEACHING  
The invention relates to the hydrometallurgical treatment of laterite ores in order to recover valuable metals. More specifically, the invention presented relates to a method for improving...
US20140000413 PRECIOUS METALS RECOVERY  
Discloses a hydrometallurgical process and system for the recovery of precious metals; specifically palladium, rhodium, and platinum metals, at high purity and with limited waste and environmental...
US20130125708 METHOD FOR THE EXTRACTION AND RECOVERY OF VANADIUM  
A method (10) for the extraction and recovery of vanadium from its ores, the method (10) characterised by the steps of: (i) Acid leaching (12) of an ore containing vanadium and iron to extract...
US20120111152 ANTI-SCALE COMPOSITION AND METHOD OF USE FOR LEACH FIELDS  
Disclosed is a method for treating heap leach stacks by applying an insoluble polyimide composition, such as polysuccinimide, to the surface of an ore stack and/or incorporating the insoluble...
US20110023662 High Temperature Leaching Process  
A method of conducting a bioleaching process including the steps of forming a main heap, culturing at least one microorganism which exhibits bioleaching activity in a predetermined temperature...
US20150027901 BIOMINING ENHANCEMENT METHOD  
A biomining enhancement method for metal sulfide ores using sulfurous acid for microbial leaching of heavy metals into solution for subsequent removal via electro winning, ion exchange, or...
US20090272227 Metal Extraction Without Cyanide  
An improved process and composition for the extraction of metal from a metal-laden ore, soil or rock is provided. A liquid, three-component aqueous lixiviant comprises water, an alkali metal salt...
US20150000466 Production of High Grade Nickel Product  
A process for the production of a high grade nickel product including the steps of: a) providing at least one heap of a nickeliferous lateritic ore and leaching that heap with a suitable...
US20100139457 METHOD AND APPARATUS FOR RECOVERING INDIUM FROM ETCHING WASTE SOLUTION CONTAINING INDIUM AND FERRIC CHLORIDE  
It is an object to provide a method and an apparatus for recovering indium, the method and apparatus ensuring that it is unnecessary to recover indium in the form of indium hydroxide, indium can...
US20120325676 PROCESS TO RECYCLE END OF LIFE CDTE MODULES AND MANUFACTURING SCRAP  
A method for recycling of thin film Cadmium Telluride photovoltaic modules at the end of their life, and manufacturing scrap, has been developed. This method allows for minimum glass fine...
US20120204681 MOLYBDENUM REFINING METHOD  
A molybdenum refining method collects molybdenum with high purity and yield by simple means. The molybdenum refining method includes mixing and grinding a molybdenum ore or concentrate containing...
US20100263490 METHODS AND SYSTEMS FOR RECOVERING RHENIUM FROM A COPPER LEACH  
Various embodiments provide new methods of rhenium recovery. The methods can include subjecting a metal-bearing solution to an activated carbon bed, and adsorbing rhenium onto the activated...

Matches 1 - 50 out of 216 1 2 3 4 5 >