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9039806 Recycling of solids in oxidative pressure leaching of metals using halide ions  
The invention provides a recycling step in an oxidative pressure leaching process for recovery of metals using halide ions, in which a portion of the leached solids are recycled back to the feed...
9023129 Hydrometalurgical process and apparatus for recovering metals from waste material  
The invention is directed to a process and apparatus for recovering metals from bottom ash from incineration plants, such as municipal waste incineration plants. The process includes directing a...
9023130 Method for separating positive-pole active substance and method for recovering valuable metals from lithium ion battery  
The present invention aims at improving a recovery rate of a positive-pole active substance and preventing a recovery loss of valuable metals when a positive-pole active substance is separated...
9011574 Method for leaching of copper and molybdenum  
A method for leaching copper and molybdenum from an ore, residue and/or concentrate containing such, in which more than 1% w/w of the total molybdenum is present as a sulfide and in which more...
8999034 Method for improving gold recovery  
Disclosed are methods and compositions for improving metal extraction processes by introducing at least one cationically charged compound selected from a group consisting of amines, particularly...
8992666 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...
8992665 Metal recovery method and dialysis device  
Provided is a valuable-metal recovery method for recovering metals from lithium ion batteries using comparatively simple equipment and without using a cumbersome process. In said method, a...
8986425 Method for recovering rare earth compounds, vanadium and nickel  
A method for recovering rare earth compounds, vanadium and nickel from waste vanadium-nickel catalysts, comprising steps of: acid leaching, by soaking waste vanadium-nickel catalysts into a...
8986423 Heap leach operations  
A method of heap leaching including forming a heap lift, installing a horizontal solution collection system between the heap layers including a horizontal tubing with a wireline data collection...
8968442 Leaching process for copper concentrates with a carbon catalyst  
A method of recovering copper from a copper sulfide concentrate comprising a copper arsenic sulfosalt or a copper antimony sulfosalt, using carbon as a catalyst. The concentrate and carbon are...
8945275 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...
8911532 Method for leaching copper from copper sulfide ore  
The present invention provides a method of leaching copper from a copper sulfide ore, wherein operating costs and environmental impacts can be effectively reduced. The present invention is a...
8911533 Method of recovering gold from dilute gold solution  
Disclosed is a method of recovering gold from an aqueous solution having a gold concentration of 10 mg/L or lower, using a plurality of extraction apparatuses for bringing the aqueous solution...
8900342 Process for separating copper and/or nickel from cobalt containing solutions  
The present invention relates to a process for the recovery of cobalt comprising: (i) providing a high tenor cobalt solution wherein the high tenor cobalt solution comprises cobalt and nickel;...
8888892 Method for separating nickel and cobalt from active material contained in spent nickel-metal hydride battery  
A method for separating nickel, cobalt and a rare earth element from a material containing positive and negative electrode active materials of a nickel-metal hydride battery includes mixing a...
8871003 Process for controlled oxidation of a ferrous solution  
A process for producing a ferric containing solution by the controlled oxidation of a ferrous containing solution, said process including providing a solution containing at least ferrous ions;...
8859249 Process of treatment for oxidizing an acidic solution containing an iodide ion and an iron (II) ion  
A method for producing an iron (III) ion from the acidic solution containing an iodide ion and an iron (II) ion efficiently and stably is provided. The method including performing the following...
8821711 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...
8778049 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...
8758479 Nickel recovery from a high ferrous content laterite ore  
A process is described for the recovery of nickel and/or cobalt from laterite or partially oxidized lateritic ores having a substantial proportion of the iron present in the ferrous state. The...
8728785 Additive for bioleaching that is substantially made up of the Licanantase lipoprotein, and bioleaching process to which this additive is added to increase the recovery of copper  
The invention discloses an additive for bioleaching that makes it possible to increase the recovery of copper from sulfide ores. In which this additive is substantially made up of the Licanantase...
8702838 Method for recovering metal, and reagent and kit for recovery of metal for use in the same  
A method for recovering a metal, capable of recovering a metal easily without requiring the use of an organic medium, is provided. A complex between a chelating agent and a metal present in a...
8673055 Improving the recovery of precious metals from recalcitrant refractory ore  
The invention provides a novel process for improving the recovery of precious metals from recalcitrant refractory ores by the use of hydrofluoric acid dissolved in ionic liquids. The solution of...
8663361 Methods of recovering alkali metals  
Approaches for alkali metal extraction, sequestration and recovery are described. For example, a method of recovering alkali metals includes providing a CST or CST-like (e.g., small pore zeolite)...
8657917 Method for recycling metals from waste molybdic catalysts  
A method for recycling metals from waste molybdic catalysts, comprises steps of leaching, by soaking a waste molybdic catalyst into a highly oxidized acid and conducting a reaction between sulfur...
8628735 Process for recovering metals from coal liquefaction residue containing spent catalysts  
In one embodiment, this invention is directed to a method of recovering metals from a metals bearing material comprising: reducing the particle size of at least a portion of the metals bearing...
8623115 Alkaline and acid pressure oxidation of precious metal-containing materials  
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...
8623113 Metal component collection agent and method for collecting metal component  
The present invention provides a metal component collection agent for collecting one or more metal components from a metal component-containing material; the agent containing, as an active...
8613791 Extraction process for metals like gold and platinum including fine grinding, pulping and oxygenating  
This invention relates to a process for obtaining metal values, typically base metals, platinum or gold from a feed material. In a first step of the process of the invention, feed material...
8585798 Method for recovering metal from ore  
The copper sulfide ore is leached in the halide bath without using a special oxidant but with the use of only air. The copper and gold in the copper sulfide ore can be leached at high leaching...
8574341 Method for recycling metals from waste tungsten catalysts  
A method for recycling metals from waste tungsten catalysts comprises steps of: leaching, by soaking a waste tungsten catalysts into a highly oxidized acid and conducting a reaction between sulfur...
8574339 Method for the selective acidic dezincification of steel scrap  
Complete dezincing of steel scrap is achieved by the addition of oils, whereupon the dissolution of iron is substantially suppressed through the autogenous inhibition effect of the oils. The steel...
8506673 Silica removal from pregnant leach solutions  
The present invention relates generally to a process for removing dissolved or colloidal silica from a pregnant leach solution (“PLS”). More particularly, an exemplary embodiment of the present...
8491700 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...
8491701 Methods and systems for leaching a metal-bearing ore for the recovery of a metal value  
A system and method for recovering a metal value from a metal-bearing ore material are provided. A metal-bearing ore can be mixed with certain substances and to form an agglomerated ore. In an...
8486177 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...
8454723 Saprolite neutralisation of heap leach process  
A heap leach process for the recovery of nickel and/or cobalt from a laterite ore, said process including the steps of: a) providing one or more heaps of a nickeliferous laterite ore; b) leaching...
8435324 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...
8430946 Process for recovery of nickel and cobalt from laterite ores using ion exchange resin  
The process, according to the invention, comprises the following stages: (a) processing (1) of the laterite ore (O) by crushing, scrubbing, attrition, separation, and high-intensity magnetic...
8425654 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...
8409321 Method and apparatus for leaching metal from mining ore  
Porous leach pipe and method for leaching metals from mining ores. The porous pipe may be buried beneath the surface of a pile of mined ore, providing a more even and uniform distribution of the...
8404019 Chemical agents for recovery of leached materials  
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...
8388726 Processing copper sulfide ores  
Copper is chemically extracted from crude ores by first roasting it at temperature up to 500° C. for 90 minutes, then treating it with ammonium salt followed by leaching with sulfuric acid to...
8388729 Method for ammoniacal leaching  
In accordance with the present invention there is provided a method for leaching one or more target metals from an ore, the method comprising the method steps of: curing the ore to be leached...
8388730 Process of leaching gold  
A process of leaching gold comprising the steps of: a) leaching copper from copper sulfide ore material that contains gold or contains silicate ore containing gold until the copper grade is...
8388728 Leaching ores  
A process for leaching an ore containing sulfidic copper-containing minerals includes carrying out an aerated oxidizing leach of a part of the ore and producing an acidic leach liquor containing...
8366801 Atmospheric acid leach process for laterites  
An atmospheric leach process for the recovery of nickel and cobalt from lateritic ores includes providing limonitic and saprolitic ore fractions of a laterite ore; separately slurrying the...
8361192 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...
8361191 Low acid leaching of nickel and cobalt from lean iron-containing nickel ores  
In various aspects, the invention provides processes that use relatively low levels of acid to leach lean nickel ores, including processes that provide relatively high levels of extraction of...
8323376 Lead recycling  
The present invention describes a method of recycling lead from lead containing waste, the method comprising the steps of mixing the battery paste with aqueous citric acid solution so as to...

Matches 1 - 50 out of 376 1 2 3 4 5 6 7 8 >