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Matches 101 - 150 out of 8,099

Document Document Title
WO/2015/189473A1
The present invention provides a method for controlling gas circulation in mineral flotation with an apparatus comprising a gas recirculation loop, at least one flushing flotation cell unit and one or more sealed flotation cell units, co...  
WO/2015/192000A1
A vertical drainage system for a heap leaching operation comprising vertical drainage conduits for draining fluid pockets down through the strata of a heap pile. The drainage conduits are spaced in. a parallel array throughout the ore he...  
WO/2015/185729A1
The invention relates to a method for the lagoon-based bioleaching of a metallic ore (1), wherein the temperature of the suspension containing the metallic ore to be bioleached, a bioleaching consortium and a nutritive substrate (3) of t...  
WO/2015/185803A1
The present invention provides a method of extracting gold from pregnant leach solution (PLS) obtained from leaching of gold, comprising the steps of: (a) extracting the PLS with an organic extractant comprising an organic diester and an...  
WO/2015/185804A1
The present invention according provides a method of recovering silver from silver containing halide solutions, comprising the steps of:(a) providing an ion exchange column comprising a weak anion exchange resin; (b) introducing the silv...  
WO/2015/179973A1
It is described a process for extracting aluminum from aluminum-bearing materials comprising the steps of leaching the aluminum-bearing material with HCl to obtain aluminum chloride; separating and purifying the aluminum chloride; provid...  
WO/2015/179900A1
In accordance with the present invention there is provided a method for leaching copper from a oxidised copper ore, wherein at least 5% of the copper present in the oxidised copper ore is an oxidised copper compound, the method comprisin...  
WO/2015/180224A1
A process for efficiently enriching and recovering the precious metals platinum and palladium based on a solvent extraction method, wherein isoamylol is used as an extraction agent and 2-methoxyphenyl thiourea is used as an extracting an...  
WO/2015/181446A1
The present invention provides a method of separating precious metals from anode sludge obtained from copper electrolysis, comprising (a) leaching the anode sludge in an aqueous sulfuric acid solution to remove leachable chlorides and to...  
WO/2015/181038A1
The invention relates to a method for processing metallized packaging materials, in particular beverage cartons or blister packs. According to the invention, acid is used to dissolve the aluminum and separate same from the plastic materi...  
WO/2015/176166A1
There are provided processes for decomposing AlCl3•6H2O into γ-Al2O3 that comprise heating the AlCl3•6H2O at a temperature of about 600°C to about 800°C in the presence of steam and optionally at least one gas (for example chosen ...  
WO/2015/177225A1
The invention relates to a method and to a technical process for treating solids and liquids with the objective to clean the same, and to recover valuable materials such as metals, for example, therefrom. Potential starting materials are...  
WO/2015/178752A1
The invention relates to a hydrometallurgical process for the treatment of polymetallic minerals and sulphur concentrates of copper and zinc, and by-products from lead smelting plants and zinc plants, treated independently and/or as mixt...  
WO/2015/174103A1
Provided are: a sulphuric acid acidic solution neutralisation method by which the pH of a neutralised solution can be stabilised; and a nickel oxide ore hydrometallurgical method. The present invention comprises: a sulphuric acid leachin...  
WO/2015/172241A1
A process for the extraction of copper from a feed material comprising at least one of arsenic and antimony-bearing copper sulphide minerals is provided. The process includes fine-grinding the feed material and after fine-grinding, subje...  
WO/2015/172175A1
A method for extracting gold from an acidic solution that includes a gold containing anion and a counter-cation including: contacting the acidic solution with a polymer inclusion membrane to remove the gold containing anion and the count...  
WO/2015/175251A1
A process is provided in which a silver- and base metal-containing material is contacted with an aqueous solution comprising an alkali and/or alkaline earth metal halide and an oxidant at a solution pH of at least about pH 6 to dissolve ...  
WO/2015/171010A1
The invention relates to a process for the extraction of gold and silver from ores and mining by-products. The process according to invention consists in treating ores and mining residues having a content of 0.5... 12 ppm Au with a solut...  
WO/2015/163132A1
[Problem] To provide: a metal collection method and a metal collection system, whereby it becomes possible to collect a metal from a liquid metal waste with high efficiency and at low cost; and a solution regeneration method and a soluti...  
WO/2015/161659A1
A method for simultaneously preparing high-purity vanadium and a heteropolyacid catalyst. A heteropolyacid in a vanadium-containing solution is extracted using magnetic nanoparticles grafted with an extracting agent. Utilising the magnet...  
WO/2015/161660A1
A method for recycling and preparing low-silicon high-purity vanadium pentoxide (V2O5) from a mixed solution containing vanadium, chromium and silicon. The method comprises the following steps: firstly, silicon is removed from a solution...  
WO/2015/162902A1
The purpose of the present invention is to enable high-purity manganese extremely reduced in contamination by zinc, carbon, etc. to be easily obtained at low cost by: selecting out manganese dry batteries and/or alkaline manganese dry ba...  
WO/2015/159810A1
The present invention relates to: a method for treating a copper-containing acidic liquid waste, whereby it becomes possible to remove and collect copper in the form of copper oxide from the copper-containing acidic liquid waste; and an ...  
WO/2015/157874A1
The invention relates to a method and system for detecting saturated areas or non-irrigated areas in leach heaps, in order to assist with the management and control of irrigation in leach heaps, including: a) positioning a highly stable ...  
WO/2015/159564A1
Provided is a wet-mode nickel oxide ore smelting method, whereby it becomes possible to effectively select ore particles having a high Ni/Mg ratio. The method comprises a pretreatment step (1) of sieving a nickel oxide ore to produce an ...  
WO/2015/159685A1
The purpose of the present invention is to provide a wet-mode nickel oxide ore smelting method for collecting nickel and cobalt employing a high pressure acid leach process, whereby it becomes possible to simplify a production facility a...  
WO/2015/155386A1
The invention relates to a method for producing a renewable source of metals, in particular rare earths and yttrium, from acid mine water, based on: neutralising the metal-rich acid solution to a pH value of 4, by adding an adequate quan...  
WO/2015/155684A3
Process for obtaining lithium compounds and intermediate compounds, comprising the following steps: a) contacting aluminosilicate particles, for example α- spodumene, with at least one fluorine compound, for example HF, Na F or others; ...  
WO/2015/149111A1
A hydrometallurgical process for the removal of arsenic and antimony from a so-called "dirty" copper concentrate (101) is described. The process comprises the following steps: Step 1: repulping (100) the "dirty" copper concentrate with a...  
WO/2015/150774A1
The present invention relates to selective removal of mercury from aqueous feeds also comprising precious metals. In particular, the present invention is useful for removal of mercury from processing waters produced during precious metal...  
WO/2015/146329A1
Provided is a copper removal method for an aqueous nickel chloride solution, the method able to prevent a reduction in organic solvent extraction capability and oil/water separation performance and further, when compared to prior art, th...  
WO/2015/148131A1
Disclosed herein are methods and systems for recovering precious metals from industrial waste materials. A volume of waste material is placed in a reaction vessel, in which the volume contains a metallic species in ionic form at an initi...  
WO/2015/147330A1
To provide a method for pre-treating gold ore in order to recover gold from gold ore containing pyrite by means of hydrometallurgy, wherein the generation of sulfur dioxide is suppressed and the rate of recovery of the gold can also be i...  
WO/2015/148503A1
Methods of synthesizing a DOPA-melanin (DM) polymer are disclosed, as well as compositions comprising the DM polymer and uses thereof. The method comprises contacting a reactant such as 3,4-dihydroxyphenylalanine (DOPA) with a high conce...  
WO/2015/143574A1
The invention relates to a method for recovering copper, Mo, Fe, Pt, Au, Ag, Zn, Ni, Sn, Co, U, Re, Ge, Se, rare earth metals and any other metal from the Periodic Table of the Elements present in the slag content, obtained from the slag...  
WO/2015/135017A1
A method for the recovery of uranium from a Pregnant Strip Solution (PSS) (201) emanating from an upstream uranium recovery process is described. The method comprises the steps of: extracting the uranium values quantitatively from the PS...  
WO/2015/137451A1
[Problem] To provide a polymer which enables the solid phase extraction of a metal ion, particularly a rare earth element, and from which a metal of interest can be collected by burning the polymer after the adsorption of the metal of in...  
WO/2015/137823A1
A process for alumina and carbonate production from aluminium rich materials with integrated CO2 utilization, comprising: comminuting and leaching Al-rich materials in concentrated HCI; separating unreacted material from metal chloride s...  
WO/2015/135053A1
A method for extracting precious metals from a polymetallic ore, comprising a) generating hypochlorites from a salt brine; b) chlorination of the ore using hypochlorites under acidic conditions; c) filtering to collect a pregnant solutio...  
WO/2015/137653A1
The present invention relates to a method for recovering vanadium and tungsten from a leach solution of a waste denitrification catalyst, and more specifically, to a method for recovering vanadium and tungsten from a leach solution of a ...  
WO/2015/133385A1
The purpose of the present invention is to provide a solution for use in the extraction of cobalt, whereby it becomes possible to extract cobalt at lower cost and more safely compared with a case in which a conventional one is used. The ...  
WO/2015/132654A1
Reagent compositions, methods and systems for reducing concentrations of impurity metals during metallurgic processes. Certain methods and systems in particular pertain to control of iron concentration in copper electrowinning electrolyt...  
WO/2015/131266A1
The present invention relates, first, to a two-stage leaching process using concentrated hydrochloric acid wherein ground ore is leached with two separate quantities of hydrochloric acid at different temperatures. Second, the invention r...  
WO/2015/132473A1
A method and an arrangement for treating oxide material. The method comprises: a) a grinding step for grinding the oxide material, and b) a mixing step for mixing the oxide material with an acid. The grinding step and/or the mixing step ...  
WO/2015/130607A1
Compositions and processes for leaching noble metals from materials comprising said noble metals. Advantageously, the halide-based composition is environmentally friendly and effectively removes noble metals at room temperature without t...  
WO/2015/129385A1
A method for producing hematite is provided, which firstly enables Ca-based neutralizers and parent-rock-derived neutralizers other than Ca-based neutralizers to be used in actual operations for refining, from a fine iron oxide-containin...  
WO/2015/129835A1
 [Problem] To provide a metal compound adsorbent for adsorbing negative ion metal compounds, and a method for efficiently recovering a metal compound while reducing the environmental burden using a simple treatment process incorporatin...  
WO/2015/123762A1
The present disclosure relates to a method for extracting lithium from a lithium-containing material. For example, the method can comprise leaching a roasted lithium-containing material under conditions suitable to obtain an aqueous comp...  
WO/2015/125821A1
The purpose of the present invention is to recover roughly purified scandium, which is purified to an extent acceptable for a technique for highly purifying scandium, efficiently and without any complicated operation from a neutralizatio...  
WO/2015/125331A1
Provided is a low α-emitting bismuth, characterized in that the α ray emission rate is 0.003 cph/cm2 or less. Provided is a method for producing a low α-emitting bismuth, characterized in that bismuth having an α ray emission rate of...  

Matches 101 - 150 out of 8,099