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Matches 651 - 700 out of 7,273

Document Document Title
WO/2009/155651A1
A process for the treatment of a solution containing at least ferric ions, and one or more metal values, said process including the step of maintaining a controlled concentration of ferric ions in solution for a sufficient residence time...  
WO/2009/156662A2
The invention relates to a method for processing metallurgical residue from electric steel mill dust essentially containing iron and zinc in the form of zinc oxide and zinc ferrites, to a processing of blast-furnace sludge, and to a comb...  
WO/2009/155634A1
The invention resides in a counter current atmospheric leach process comprising subjecting a saprolite ore slurry to a first stage leach at atmospheric pressure; subjecting a first stage leach residue resulting from the first stage leach...  
WO/2009/155652A1
A process for the recovery of a metal sulfide from a metal ion containing solution, including the steps of: a) providing a slurry containing seed particles of said metal sulfide; b) adding a sulfide ion containing solution to said slurry...  
WO/2009/152560A1
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 the ore in a heap leach step by applying...  
WO/2009/153409A4
The invention relates to a method for leaching pyrometallurgically produced, copper-containing sulfidic nickel matte. The nickel matte is first fed to an atmospheric leach step from which is obtained a nickel-bearing solution and a coppe...  
WO/2009/153409A1
The invention relates to a method for leaching pyrometallurgically produced, copper-containing sulfidic nickel matte. The nickel matte is first fed to an atmospheric leach step from which is obtained a nickel-bearing solution and a coppe...  
WO/2009/149590A1
An atmospherically catalyzing and oxidizing method of refractory gold concentrate with high arsenic and high sulfur, comprises ① adding predefined ore, solid catalyst, acid and water into reaction container with stirrers to form ore pu...  
WO/2009/149521A1
A hydrometallurgical method for leaching a base metal in a combined pressure acid leach comprises the steps of combining a sulphide ore (14) or concentrate with a laterite or other oxide ore (16) and mixing them together to form a slurry...  
WO/2009/149522A1
A rheological method for the hydrometallurgical recovery of base metals such as nickel from ores comprises the steps of combining a sulphide ore or concentrate (10) with a laterite or other oxide ore (12) and milling them together in a m...  
WO/2009/146518A1
The present invention resides in a process of recovering nickel and cobalt, regenerating the main raw materials, said process including the steps of: granulometric separation; leaching; neutralization; MHP production in only one stage an...  
WO/2009/146571A3
In order to correct the significant problems associated with the distribution and uniformity of fluid in leaching heaps, the invention provides a device and the associated methods for monitoring, maintaining and controlling irrigation fo...  
WO/2009/146485A1
A process of leaching a metal value such as nickel and/or cobalt from a metal laden solid, for example an ore such as laterite, comprises the steps of (a) contacting the metal laden solid with a leach solution comprising a mineral acid a...  
WO/2009/146571A2
In order to correct the significant problems associated with the distribution and uniformity of fluid in leaching heaps, the invention provides a device and the associated methods for monitoring, maintaining and controlling irrigation fo...  
WO/2009/146647A1
A method of extracting Te and bismuth oxide and recovering byproduct comprises: leaching raw materials with a Te content of ≥1.8% by utilizing a leaching system containing H2SO4, Cl-, Br-, NH4+ and NaClO3, reducing leach solution...  
WO/2009/146175A2
Disclosed is a process for removing metals from waste, particularly electronic waste (or "e-waste"). The process generally includes the steps of dissolving at least some of the metals from the waste with nitric acid reagent and then caus...  
WO/2009/146175A3
Disclosed is a process for removing metals from waste, particularly electronic waste (or "e-waste"). The process generally includes the steps of dissolving at least some of the metals from the waste with nitric acid reagent and then caus...  
WO/2009/141566A3
The invention relates to a method for treating industrial waste (1) containing asbestos and a hydraulic binding agent, said method being characterised in that it comprises at least one treatment step of so-called cold acid treatment (4) ...  
WO/2009/138563A1
The invention relates to a system used in the liquid-liquid extraction of metals, enabling the amount of organic solution required in the various stages of extraction to be significantly reduced. In accordance with the invention, the set...  
WO/2009/139715A1
A process for chlorinating ore, slag, mill scale, scrap, dust and other resources containing recoverable metals from the groups 4-6, 8-12, and 14 in the periodic table. The process comprises: a) forming a liquid fused salt melt consistin...  
WO/2009/135291A1
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 added to an acidic sulfate leach solution. T...  
WO/2009/135665A1
The present invention relates to a method for recovering rhenium from an ethylene oxide catalyst containing rhenium and at least silver on a solid support, wherein at least a substantial portion of the rhenium present in the catalyst is ...  
WO/2009/132558A1
A method of extracting Ni and/or Co comprises: atmospheric agitation leaching limonite-type ore at heated state to avoid slow velocity of heap leaching, and heap leaching serpentine-type ore to obtain higher leaching velocity.  
WO/2009/133053A1
A method for reclaiming molybdate or tungstate from an aqueous solution, in which molybdate or tungstate from the aqueous solution is bound to a cationized inorganic carrier material which is insoluble in water at a pH value in the range...  
WO/2009/129653A1
A metallurgical process for extracting Ni, Co, Fe from laterite-nickel ore is disclosed. It concerns a comprehensive recovery and utilization of laterite-nickel ore, comprising the following steps: A) subjecting the laterite-nickel ore t...  
WO/2009/130006A1
The present invention relates to a cyanide-free process of isolating precious metal gold from a particulate material containing said metal, comprising the following steps of (i) preparing an aqueous mixture containing said particulate ma...  
WO/2009/130345A1
The invention relates to a method for recovering gold using hollow-fibre membranes and dispersion-based back-extraction in the presence of one or more of the following metals: Zn, Ag, Ni, Fe and Cu, in an aqueous cyanide medium.  
WO/2009/127018A1
(57) Abstract: A method for metal leaching comprises contacting a granulated metal- containing material with an aqueous solution of chemical reagents in a pipe reactor, the metal-containing material and the aqueous solution of chemical r...  
WO/2009/129271A1
Disclosed is a process and system for removing metals from waste, particularly electronic waste (or "e- waste"). The process generally includes the steps of dissolving at least some of the metals from the waste and then causing at least ...  
WO/2009/124355A1
A process of leaching a metal value, such as nickel, from a metal laden solid, such as ore. The process includes the steps of contacting the metal laden solid with a leach solution comprising an organic bio-acid to provide a metal value ...  
WO/2009/125341A3
The present invention relates to microorganisms able to reduce mercury ion to metallic mercury; in particular, it refers to systems, apparatuses such as a stirred bioreactor and methods for microbiological mercury removal from contaminat...  
WO/2009/124387A1
Described is a process for decontaminating wood treated with preservative such as chromium copper arsenate (CCA) including contacting the contaminated wood with water and inorganic acid at a concentration between 0.05 and 0.8 N at less t...  
WO/2009/124393A1
An electrochemical process for the recovery of metallic iron or an iron-rich alloy, oxygen and sulfuric acid from iron-rich metal sulfate wastes is described. Broadly, the electrochemical process comprises providing an iron-rich metal su...  
WO/2009/125341A2
The present invention relates to microorganisms able to reduce mercury ion to metallic mercury; in particular, it refers to systems, apparatuses such as a stirred bioreactor and methods for microbiological mercury removal from contaminat...  
WO/2009/120373A3
A process and composition for extracting metal from a metal-laden ore, soil or rock is provided A liquid, three-component aqueous lixiviant comprises water, an alkali metal salt and a low pH acidic composition A four-component aqueous li...  
WO/2009/114925A1
An electrochemical process for the concurrent recovery of iron metal and chlorine gas from an iron-rich metal chloride solution, comprising electrolysing the iron-rich metal chloride solution in an electrolyser comprising a cathodic comp...  
WO/2009/114903A1
A process for the recovery of nickel and/or cobalt from a sulfate solution that also contains iron wherein a substantial proportion of the iron present is in the ferrous state, said process including the steps of: a) oxidising the majori...  
WO/2009/114904A1
An atmospheric leaching process for the recovery of a nickel and cobalt from a lateritic ore, said process including the steps: (a) preparing a slurry of the lateritic ore with saline or hypersaline water having a total dissolved solids ...  
WO/2009/113842A1
An improved process for leaching and recovering precious metals from materials and ores containing same by using ammoniacal thiosulphate solutions of copper with added EDTA, and performing direct selective electroseparation thereof from ...  
WO/2009/109754A1
The application relates to a method for extracting a metal comprising: exposing a metal containing material to (i) liquid solvent or supercritical solvent; in combination with (ii) a perfluorinated phosphine. Perfluorinated phosphines ar...  
WO/2009/109522A1
The present application relates to novel monodisperse, gel-form or macroporous picolylamine resins based on at least one monovinylaromatic compound and at least one polyvinylaromatic compound and/or a (meth)acryloyl compound which contai...  
WO/2009/109520A1
The present application relates to new gel-like or macroporous picolylamine resins based on at least one monovinyl aromatic compound and at least one polyvinyl aromatic compound and/or a (meth)acrylic compound containing tertiary nitrog...  
WO/2009/108993A1
A process for the treatment of solutions or slurries containing dissolved metals comprises the steps of (a) contacting the solution or slurry with an ion exchange resin that selectively removes one or more dissolved metals from the solut...  
WO/2009/110149A1
A process for the recovery of valuable metals from scrap IZO, characterized by conducting electrolysis by using an insoluble electrode as the anode and scrap IZO as the cathode to recover metallic indium and zinc or suboxides of both. Th...  
WO/2009/106734A8
The subject of the present invention is a multi-column sequenced separation process and a device for implementing this process. The invention applies particularly to the separation of metal derivatives such as uranium, nickel, copper, co...  
WO/2009/105832A1
The invention relates to a method for recovering gold from an acid digest of a gold-containing copper anode slime. The acid digest is selectively extracted with an alcohol having low miscibility with water. Gold is then recovered from th...  
WO/2009/106660A1
The invention relates to a method for the recovery of germanium present in aqueous solutions, which is separated form other materials also present in said solutions through the use of ion-exchange resins. The selective extraction is perf...  
WO/2009/106734A1
The subject of the present invention is a multi-column sequenced separation process and a device for implementing this process. The invention applies particularly to the separation of metal derivatives such as uranium, nickel, copper, co...  
WO/2009/103850A4
The invention relates to a method for separating the impurities zinc, iron, calcium, copper and/or manganese from aqueous solutions that contain cobalt and/or nickel. An aqueous solution (1) containing metallic salts is brought into a mi...  
WO/2009/103850A1
The invention relates to a method for separating the impurities zinc, iron, calcium, copper and/or manganese from aqueous solutions that contain cobalt and/or nickel. An aqueous solution (1) containing metallic salts is brought into a mi...  

Matches 651 - 700 out of 7,273