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WO/2014/071485A2 |
The present invention describes a process for removing uranium from a copper concentrate by magnetic separation (low and high field) aiming the reduction of the content of uranium in a copper concentrate to commercially acceptable levels.
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WO/2014/074985A1 |
A method of leaching a copper bearing sulfide mineral slurry containing chalcopyrite is described. The method comprises the steps of providing a slurry having chalcopyrite particles therein, exposing the slurry to an acidic leach solutio...
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WO/2014/061037A1 |
The present invention relates to a method for treatment of solid waste generated in copper manufacturing process comprising treating the solid waste with a mineral acid. It further relates to the recovery of transition and post transitio...
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WO/2014/040140A1 |
A process for the removal of one or more radioactive impurities from a copper bearing copper containing material having a radioactivity greater than a predetermined level, including: (a) forming a melt from the copper containing material...
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WO/2014/042948A1 |
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...
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WO/2014/033363A1 |
The invention relates to an arrangement for feeding fine-grained matter to a concentrate or matte burner (1) of a suspension smelting furnace (2). The arrangement includes a screw conveyor (3) comprising a tube means (4) having an inlet ...
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WO/2014/029913A1 |
The invention relates to a method and to an arrangement for feeding fine-grained matter to a concentrate or matte burner (1) of a suspension smelting furnace (2). The arrangement comprising a fluidization arrangement (3) for feeding flui...
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WO/2014/030048A1 |
A process of extracting copper from copper sulphide minerals which is enhanced at solution potentials exceeding 700 mV SHE, in the absence of any microorganism, by contacting the minerals in a pre-treatment phase using an acid solution a...
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WO/2014/030878A1 |
Disclosed is a method for separating and collecting useful metals from a waste lead-free solder. The method for separating and collecting useful metals in the waste lead-free solder according to the present invention, comprises: a leachi...
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WO/2014/022946A1 |
The present invention relates to a hydrometallurgical method for leaching smelting dust with tricarboxylic acid solutions in four stages. The first stage includes leaching followed by a second stage of solid/liquid separation. The "liqui...
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WO/2014/023755A1 |
The present invention relates to a metal leach and recovery process. The process involves subjecting a metal bearing material to a reactive process by combining said metal bearing material with a leaching agent to liberate at least one m...
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WO/2013/192386A1 |
Copper is produced by a looping oxidizing process wherein oxidation of copper sulfide concentrate to molten blister copper by conversion with copper oxides (and optionally oxygen from air) in a one step, molten bath operation to produce ...
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WO/2013/186440A1 |
The invention relates to a method and to an arrangement for refining copper concentrate (1). The arrangement comprises a suspension smelting furnace (2) comprising a reaction shaft (5), and a settler (6).The reaction shaft (5) is provide...
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WO/2013/176110A1 |
The present invention pertains to a method and apparatus for removing and recovering, as copper oxide, copper from a copper-containing acidic waste liquids, which contain copper ions in high concentration, said copper-containing acidic w...
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WO/2013/176111A1 |
The present invention pertains to a processing method and apparatus for neutralizing copper chloride-containing acidic waste liquids containing copper ions in high concentrations, said copper chloride-containing acidic waste liquids incl...
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WO/2013/167810A1 |
The invention relates to method and to an arrangement for removing outgrowth in a suspension smelting furnace. The suspension smelting furnace comprising a reaction shaft (1) having a reaction shaft structure (9). The reaction shaft (1) ...
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WO/2013/163712A1 |
The present invention discloses a new process for leaching sulfide minerals consisting of leaching crushed ore in a vat reactor, wherein the leaching solution is fed with an ORP value close to the upper limit suitable for leaching and th...
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WO/2013/140836A1 |
Provided is a method for producing hematite for iron production, whereby high purity hematite, which can be used as a raw material for producing iron, is cheaply and efficiently recovered from leach residue containing iron oxide produced...
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WO/2013/104045A1 |
A method for selectively processing a polymetallic oxide solution containing a plurality of base metals comprising at least one of: Cu, Co, Ni, Zn associated with iron, comprising acid leaching the solution; recovering a filtered leachat...
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WO/2013/098044A1 |
The present invention relates to a method for recovering a metal from a slag containing the metal, in which the metal-containing slag is heated in at least one stirred tank reactor (2), and in which the liquid slag in the stirred tank re...
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WO/2013/096070A1 |
Various embodiments provide a process roasting a metal bearing material under oxidizing conditions to produce an oxidized metal bearing material, roasting the oxidized metal bearing material under reducing conditions to produce a roasted...
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WO/2013/089630A1 |
There is provided a method for providing selenium dioxide and a copper indium gallium residue from a material comprising a compound of formula (I) CulnxGa(1-x)Se2 (I), wherein x has a value from 0.01 to 0.99, said method comprises the st...
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WO/2013/079762A1 |
The invention relates to a method for controlling suspension (8) in a suspension smelting furnace (1), to a suspension smelting furnace, and to a concentrate burner (2). The method comprises feeding additionally to pulverous solid matter...
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WO/2013/042340A1 |
According to a metal recovery method, it is possible to recover with high efficiency metals (metal ions) contained in a solution by culturing red algae belonging to the order Cyanidiales in a solution wherein the cell concentration there...
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WO/2013/030450A1 |
The invention relates to a method by which the valuable metals and any possible precious metals are recovered from a material containing them, such as the mixed matte formed in a smelter. The valuable metals in the material formed in the...
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WO/2013/021438A1 |
Provided is a method for leaching out copper from a copper sulfide ore using a sulfuric acid solution containing an iron-oxidizing bacterium and silver without decreasing the growth of the iron-oxidizing bacterium and without deteriorati...
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WO/2013/013350A1 |
A spin-suspension-entrainment metallurgical process. A reaction gas (12) and a powdered material are sprayed into a reaction furnace (13) to achieve a controllable highly dispersed spin suspension status, and reach the ignition temperatu...
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WO/2012/162851A1 |
The invention relates to a process for producing a chemical reagent that is soluble in neutral waters, acid waters and in process solutions, in order to aid and improve the oxidation and leaching of copper sulfides. The process comprises...
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WO/2012/159567A1 |
A combined furnace system for fire refining red impure copper, comprising in order: a shaft furnace (2) for smelting red impure copper raw material into red impure copper liquid; a red impure copper liquid groove (4); at least one rotary...
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WO/2012/150984A2 |
Provided are methods using a ketoxime in metal extraction. One aspect of the invention relates to a method for the recovery of metal from a metal-containing aqueous solution at an elevated temperature using a ketoxime. Another aspect rel...
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WO/2012/149631A1 |
The present invention relates to methods for recovering precious metals including silver and gold, rare metals including indium and gallium, base metals including copper, lead and zinc or a combination of precious, rare and base metals f...
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WO/2012/151028A1 |
A process for the recovery of selected base metals from a solution includes selectively precipitating metals from the solution using substituted quaternary ammonium salts (SQAS). SQAS is generally represented by the formula H0-3 R4-1 NX ...
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WO/2012/146826A1 |
A method and apparatus for fabricating an oxygen-free copper product (P), such as oxygen-free copper wire, tube or rod, from copper oxide powder. The method comprises the reduction and melting of copper powder, and casting of molten oxyg...
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WO/2012/120982A1 |
Copper or a copper alloy each characterized by having an α-ray emission of 0.001 cph/cm2 or less. As recent semiconductor devices have been made to have a higher density and a higher capacity, soft errors are more apt to occur therein b...
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WO/2012/117163A1 |
The invention relates to a method for fabricating a copper product hydrometallurgically from a raw material containing copper sulphide for the further pyrometallurgical refining of the product. In the method a raw material containing cop...
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WO/2012/113263A1 |
A method for removing iron and aluminum from an iron-based waste material containing high-value elements through natural oxidation comprises： pulverizing the iron-based waste material, and then mixing with water and a small amount of a...
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WO/2012/111690A1 |
Provided is a method for stabilizing the degree of oxidation of molten battery waste, and definitively separating slag and alloy. The method is provided with a pre-oxidation step (ST20) for roasting and oxidizing battery waste; and a dry...
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WO/2012/098783A1 |
A method for leaching copper from a copper sulfide ore is provided in which the operation cost and the environmental burden are satisfactorily reduced. The method for leaching copper from a copper sulfide ore comprises supplying a first ...
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WO/2012/081953A1 |
The invention relates to the mining industry, for the treatment of minerals containing copper. The invention specifically relates to an oxidative process for extracting copper from refractory mineral phases containing copper. The advanta...
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WO/2012/079283A1 |
Disclosed are a mineral-dressing agent for noble metals and preparation method thereof. The method comprises introducing mixed potassium ferrocyanide and urea into a reactor, adding pH adjusting agent while being subjected to slow heatin...
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WO/2012/078274A2 |
Nanomaterial preparation methods, compositions, and articles are disclosed and claimed. Such methods can provide nanomaterials with improved morphologies relative to previous methods. Such materials are useful in electronic applications.
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WO/2012/075596A1 |
The invention relates to a method for leaching copper oxide without using sulfuric acid, comprising the following steps consisting in: impregnating the copper oxide using a non-polluting organic leaching agent consisting of an aqueous so...
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WO/2012/065406A1 |
A method for balancing iron by producing iron vitriol in bio-metallurgy process involves adjusting and optimizing the parameters, such as temperature in the heap,pH in the leaching liquid and the concentration of iron, during the heap bi...
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WO/2012/055167A1 |
Disclosed is a bacterial liquid of microbial combinations for biometallurgical leaching of copper ore and a method for recovering metallic copper therefrom. A microbial leaching combination, after undergoing adaptive culture, continuous ...
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WO/2012/053614A1 |
A copper concentrate treatment method characterized by comprising: a roasting step of roasting an enargite (Cu3AsS4) or a copper concentrate mainly composed of an enargite at 550-700°C in an inert gas atmosphere; and a leaching step of ...
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WO/2012/053915A1 |
The present invention relates to a process of gold and copper recovery from gold-containing copper ores obtained from mixed oxide-sulfide copper ore bodies by a series of flotation stages. More specifically, the present invention relates...
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WO/2012/033077A1 |
[Problem] To decompose hydrogen peroxide in a copper etching waste liquor that contains hydrogen peroxide at a high concentration, with high efficiency. [Solution] A method of treating a copper etching waste liquor containing hydrogen pe...
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WO/2012/008453A1 |
Disclosed is a rotary kiln provided with a rotary furnace in which an object to be treated containing a metal is burnt, an electric furnace which is connected to the rotary furnace via a connecting portion and which separates the metal f...
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WO/2012/001238A1 |
The invention relates to a suspension smelting furnace comprising a reaction shaft (1), an uptake shaft (2), and a lower furnace (3), as well as a concentrate burner (4) for feeding reaction gas and fine solids into the reaction shaft (1...
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WO/2012/000090A1 |
A method of recovering copper from chalcopyrite concentrate by chemical leaching, using pyrite and silver. The catalytic properties of pyrite in the chalcopyrite leaching process are significantly enhanced by pretreating the pyrite with ...
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