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Matches 551 - 600 out of 4,001

Document Document Title
WO/2010/032212
This invention relates to the treatment of a hydrometallurgical stream, including the steps of: 1 ) adding an absorbent particulate clay, for example a montmorrillonite clay such as bentonite, to the stream to coagulate ultrafine particl...  
WO/2010/026599
A bench-scale pressure reactor system for extracting minerals in a leaching process, comprising: a batch reactor (1 ) heaving means for heating and continuous mixing of metals and minerals, the reactor comprising a charging funnel (2), a...  
WO/2010/022480
The method for extraction of nickel and cobalt comprises the steps of: pulp of ore and sulphuric acid solution is subjected to treatment in the cathode compartment of an electrolytic cell maintaining oxidation reduction potential at valu...  
WO/2010/025096
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 intermediate state, between agglomeration an...  
WO/2010/022481
The method for extraction of nickel and cobalt from oxide ores comprises the steps of: pulp of ore and sulphuric acid solution is subjected to treatment in the cathode compartment of an electrolytic cell maintaining oxidation reduction p...  
WO/2010/020245
A method for the sulphuric acid leaching of nickel and cobalt from a lateritic ore comprising the steps of separating the nickel- and cobalt-containing lateritic ore into a limonite fraction and a saprolite fraction, subjecting part of t...  
WO/2010/015019
A process for lowering the concentration of phosphorus in iron ore is disclosed. The process comprises roasting and then leaching iron ore or upgraded concentrates of iron ore having a concentration of at least 0.05 wt. % phosphorus to l...  
WO/2010/012030
A method for leaching a material containing one or more target metals using an acidic leaching solution to extract said one or more target metals, said method including (I) empirically determining an optimal acid concentration range for ...  
WO/2010/009512
A method of extraction of a metal from an ore or ore concentrate, including the steps of melting a target metal-containing mixture in a heated process vessel at a minimum temperature to form a homogeneous melt in the presence of an appro...  
WO/2010/009530
A method and apparatus are disclosed for controlling a temperature within a reactor vessel such as an autoclave operating at elevated temperature and pressure. The apparatus includes a preheating vessel for preheating a feed material suc...  
WO/2010/009481
A copper bioleaching process which makes use of a consortium which contains Leptospirillum ferriphilum and a sulphur oxidising microorganism which is halophilic or halotolerant.  
WO/2010/009481
A copper bioleaching process which makes use of a consortium which contains Leptospirillum ferriphilum and a sulphur oxidising microorganism which is halophilic or halotolerant.  
WO/2010/000029
A process for the recovery of nickel and cobalt from a nickeliferous oxidic ore by heap leaching and/or atmospheric agitation leaching, the process including the steps of: mixing a sulfur containing reductant selected from reductants tha...  
WO/2010/001728
Provided is a method for quickly separating radioactive copper from nickel containing radioactive copper and radioactive cobalt. The nickel that contains radioactive copper and radioactive cobalt is dissolved in an acidic solution and pa...  
WO/2010/001866
Disclosed is a process for producing metallic zirconium from a hafnium-containing zirconium compound that requires only a few steps and produces little secondary waste. The process comprises a separation step of separating hafnium ocych...  
WO/2009/155651
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/2009/156662
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/2009/155634
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/2009/155652
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/2009/152560
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/2009/153409
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/2009/153409
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/2009/149590
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/2009/149521
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/2009/149522
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/2009/146518
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/2009/146571
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/2009/146485
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/2009/146571
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/2009/146647
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/2009/146175
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/2009/146175
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/2009/141566
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/2009/138563
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/2009/139715
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/2009/135291
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/2009/135665
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/2009/132558
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/2009/133053
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/2009/129653
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/2009/130006
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/2009/130345
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/2009/127018
(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/2009/129271
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/2009/124355
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/2009/125341
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/2009/124387
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/2009/124393
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/2009/125341
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/2009/120373
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...  

Matches 551 - 600 out of 4,001