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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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;... |
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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... |
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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;... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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)... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |