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Matches 51 - 100 out of 7,853

Document Document Title
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/2015/149111A1
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...  
WO/2015/124507A1
The present invention relates to a process for reducing the amounts of zinc and lead in starting materials comprising iron which comprises the steps of: - selectively leaching Zn and Pb comprised in the starting materials by mixing the s...  
WO/2015/121684A1
Lithium ions may be sequestered from an aqueous solution containing lithium ions and ions of at least one other metal by the addition to said solution of a lithium insertion material in the presence of a reducing agent having a redox pot...  
WO/2015/122397A1
This scandium separation method comprises: a step (step S1) in which an acidic water-soluble solution having a pH of less than 4 and containing scandium is prepared; a step (step S2) in which a first acidic water-soluble fluid is generat...  
WO/2015/121799A1
The present invention relates to an improved apparatus for economically extracting metal from a metal-bearing material. In particular, the present invention relates to an improved apparatus for extracting metal, including inter alia base...  
WO/2015/115269A1
In order to recover high-quality scandium from nickel oxide ores efficiently, this method comprises: a leaching step (S1) for feeding Ni oxide ores and sulfuric acid into a pressure vessel, and subjecting the mixture to solid-liquid sepa...  
WO/2015/114913A1
Provided are: a sulfide-manufacturing facility which can attain effective utilization of hydrogen sulfide gas and thus improve the reaction efficiency of hydrogen sulfide; and a sulfide-manufacturing process. This sulfide-manufacturing f...  
WO/2015/113141A1
A process is provided for separation of at least one metal sulfide from a mixed sulfide concentrate. The process may comprise: subjecting the mixed sulfide concentrate to flotation in which at least one sulfide comprising antimony, arsen...  
WO/2015/110702A1
The present invention provides a method of recovering copper and zinc from an aqueous sulfate and chloride containing solution.In the first process step zinc and copper are simultaneous extracting with an extraction solution comprising a...  
WO/2015/106324A1
The present Invention relates to a new solvent extraction process for the extraction of rare earths as a group and for the separation of a mixture of rare earths into the individual elements. The rare earths are extracted from a feed sol...  
WO/2015/107985A1
The purpose of the present invention is to provide a manufacturing method for producing hematite for ironmaking from leachate, the method suggesting a separation method for leachate from which hematite-containing matter that can be used ...  
WO/2015/108879A1
Embodiments of the present invention include systems and methods that include a sorption vessel containing a pulp including an aqueous slurry and a sorbent, a screening system at least partially submerged within the pulp and including a ...  
WO/2015/103845A1
A method for treating a lead-containing raw material, comprising the following steps: under the condition of a first pH value, under the effect of a catalyst, reacting a lead-containing raw material, a sulphate A, a complexing agent A, a...  
WO/2015/102865A1
New and useful processes are provided for leaching precious metal from sources composed of or containing such metals. The leaching agents used are aqueous solutions of solvated alkali metal, alkaline earth metal, ammonium, and/or N-halos...  
WO/2015/102867A1
New and useful processes are provided for leaching at least one precious metal contents from sources composed of or containing such metals. The leaching agents used are aqueous solutions of solvated alkali metal, alkaline earth metal, am...  
WO/2015/102062A1
Low-α-emission bismuth characterized by having an α-ray emission of 0.005 cph/cm2 or less; and a process for producing low-α-emission bismuth, characterized by using bismuth having an α-ray emission of 0.2 cph/cm2 or less as a starti...  
WO/2015/098191A1
Bismuth characterized by having an α-ray emission of 0.007 cph/cm2 or less; and a process for producing low-α-emission bismuth, characterized by using bismuth having an α-ray emission of 0.15 cph/cm2 or less as a starting material, el...  
WO/2015/099612A1
A method of producing a metal carbonate from an ultramafic rock material is provided. The method includes providing an ultramafic rock material comprising a metal silicate; reacting the ultramafic rock material with an acid to form a mix...  
WO/2015/096549A1
Provided are a process and an apparatus for extracting battery grade lithium from brine. The process comprises the following steps: step 1, absorbing the brine with a lithium adsorption agent and then desorbing the lithium adsorption age...  
WO/2015/099189A1
[Problem] To provide a means of using a yeast to recover noble metal ions in reduced form, i.e., as noble metals. [Solution] In a liquid to which an electron donor has preferably been added, Saccharomyces cerevisiae, Zygosaccharomyces ro...  
WO/2015/097343A1
The invention relates to a method and an arrangement for nickel laterite processing. The method comprises the steps of providing a cold feed slurry; heating cold feed slurry one or more times to obtain a heated diluted feed slurry;removi...  
WO/2015/097342A1
The invention relates to a combined heater-decanter unit in a nickel laterite process. The unit comprises a vertically elongated vessel (1) comprising a heating section (2) arranged in the upper part of the vessel (1), a pressure decanta...  
WO/2015/092147A1
The invention relates to an autoclave for leaching and oxidising ores comprises an inlet for receiving slurries of ore into the autoclave, agitation means for agitating slurries of ore in the autoclave and an outlet for removing at least...  
WO/2015/090203A1
A biological method for extracting metal from metallurgical and mineral solid waste comprises: crushing the solid waste, biological soaking, recycling the metal from leachate, and separating the soaked solid waste slag by a gravity conce...  

Matches 51 - 100 out of 7,853