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WO/2007/134343A2 |
A heap leaching method to recover copper from a primary copper sulphide mineral wherein the mineral is leached in an acidic chloride or mixed chloride/sulphate solution in the presence of oxygen with the surface potential of the mineral ...
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WO/2007/134344A1 |
A tank leaching method to recover copper from a slurry of a copper sulphide mineral concentrate and an acidic or mixed chloride/sulphate solution. Leaching takes place in the presence of dissolved oxygen and the surface potential of the ...
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WO/2007/130985A1 |
The present invention relates generally to a process for recovering copper and/or other metal values from a metal-bearing ore, concentrate, or other metal-bearing material using pressure leaching and direct electrowinning. More particula...
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WO/2007/118257A2 |
Small magnetic particles are introduced into a solution which is subjected to a bioleaching process. The suspended particles are coated with a substance which has a selective affinity for, and which interacts with, a metal in the solutio...
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WO/2007/113375A1 |
The invention relates to a method for treating solids-containing process gas (7) in a suspension smelting furnace (1), comprising directing the process gas from the reaction shaft (2) of the suspension smelting furnace to a lower furnace...
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WO/2007/109822A1 |
Process for the pyrometallurgical production of copper, comprising the steps of a) charging a pyrometallurgical vessel with a copper-containing melt, b) iron blowing of the melt, an iron-containing slag being formed, c) removing the slag...
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WO/2007/109841A1 |
The present invention relates to an improved method for the recovery of metal values, in particular copper and gold, from a metal value-bearing material containing arsenic and/or antimony and a source of sulphate ions, by means of a high...
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WO/2007/099119A1 |
The present invention relates to a process for the acid digestion of metal-containing compounds by leaching by means of an aqueous leachant, wherein the aqueous leachant i) contains an alkanesulphonic acid and, if appropriate, sulphuric ...
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WO/2007/093667A1 |
The invention relates to a method whereby copper is recovered from a copper sulphide ore containing pyrite. According to the method the ore is ground and leached into a solution containing sulphuric acid in atmospheric conditions by mean...
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WO/2007/092219A1 |
A method for refining non-ferrous metal wherein a stream of oxygen containing gas is provided from a lance (10) into the headspace (3) of a refining vessel (1) for passage to the molten metal bath (2) within the refining vessel, and a fl...
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WO/2007/077290A1 |
The invention relates to a method for improving the leaching of a sulphidic concentrate that contains valuable metals in a hydrometallurgical fabrication process of said valuable metal. The purpose is to accelerate the oxidation of sulph...
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WO/2007/068193A1 |
A process for recovering and recycling of waste ammoniacal alkaline copper etchant by means of using metallic aluminum comprises: employing a control container for control of processing parameters and then providing one or more aluminum-...
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WO/2007/066350A1 |
The present invention relates to a process for recovery of iron from copper slag. This invention particularly relates to a process for recovery of iron from a waste like granulated copper slag generated during the production of copper fr...
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WO/2007/045034A1 |
A method for the recovery of metal values from a metal value-bearing material containing arsenic and/or antimony and a source of sulphate ions such as sulphide ore or concentrate is disclosed. In one form the method comprises the steps o...
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WO/2007/042604A1 |
The invention relates to a method for the sulphate-based leaching of metal sulphide minerals, such as chalcopyrite, CuFeS2, containing ore in atmospheric conditions. It is beneficial for the leaching of metal sulphides that the sulphide ...
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WO/2007/039664A1 |
The present invention relates to a new hydrometallurgical method for recovering nickel from nickel sulphide bearing raw materials, such as sulphide concentrate or ore. In general, the process involves the oxidative atmospheric pressure l...
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WO/2007/039663A1 |
The present invention relates to a new hydrometallurgical process for recovering nickel from nickel bearing raw materials, such as sulphide flotation concentrates. In general, the process involves the oxidative atmospheric pressure leach...
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WO/2007/025317A1 |
The invention relates to a method for separating impurities out of slags, dusts, minerals, preparation residues of minerals or of recyclings or remaining substances, subsequently called feed stock. In order to save energy and reduce cost...
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WO/2006/134724A1 |
This invention provides an ultrahigh-purity copper having a hardness of not more than 40 Hv and a purity of not less than 8 N (except for gas components such as O, C, N, H, S, and P). In the ultrahigh-pure copper, the content of each of ...
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WO/2006/131371A1 |
The invention relates to a method for reducing and/or refining a metal-containing slag. The aim of the invention is to improve reduction of the slag. For this purpose, calcium carbide (CaC2) is added to the slag as the reducing agent.
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WO/2006/131372A1 |
The invention concerns a method for extracting a metal from a slag containing the metal, in which the liquefied metal-containing slag is heated in at least one arc furnace (1, 2). In order to develop an improved method for extracting, in...
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WO/2006/117424A1 |
The invention relates to a method for the treatment of material containing at least one valuable metal and arsenic to form a valuable metal-depleted scorodite sediment and a pure aqueous solution to be discharged from the process. Accord...
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WO/2006/107715A2 |
A method of operating a channel induction furnace so as to receive electric arc furnace (EAF) dust, basic oxygen furnace (BOF) sludge/dust and/or other iron and volatile metals containing materials as a feed stream on a batch, continuous...
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WO/2006/104816A1 |
A solvent extraction composition for the recovery of metals, particularly copper and iron, from leach solutions, comprises one or more orthohydroxyarylaldoximes and/or one or more orthohydroxyarylketoximes, and one or more selectivity mo...
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WO/2006/087412A1 |
The invention relates to a method for recovering gold from a sulphidic concentrate, particularly one containing arsenopyrite and/or pyrite, hydro- metallurgically. The concentrate is first subjected to leaching with a concentrated soluti...
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WO/2006/087413A1 |
The invention relates to a method for the recovery of gold from a gold-containing chloride solution using activated carbon. The gold-containing solution and the carbon are contacted with each other, after which the gold that has formed a...
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WO/2006/084950A1 |
The present invention relates to a method for the treatment of copper-bearing materials, such as copper concentrates, so that the impurities and gangue minerals in the materials, such as silicates, are in effect removed completely.
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WO/2006/082484A2 |
Methods and systems for removing copper minerals from a molybdenite concentrate. One embodiment provides leaching copper from the molybdenite concentrate with a leaching solution comprising ferric chloride, removing molybdenite from the ...
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WO2006049631B1 |
A system and process for recovering copper from a copper-containing ore, concentrate, or other copper-bearing material to produce high quality cathode copper from a leach solution without the use of copper solvent/solution extraction tec...
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WO/2006/070052A1 |
The invention relates to a method, by means of which the valuable metals contained in a sulphidic, multicomponent concentrate are recovered using hydrometallurgical treatment. One constituent of the concentrate is copper sulphide, which ...
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WO/2006/069760A1 |
The invention relates to an aqueous sulfuric acid-containing composition which comprises at least one surfactant, and to a method for producing metal, in particular copper, from metalliferous materials using said aqueous composition cont...
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WO/2006/061265A1 |
The aim of the invention is to increase machine productivity for a foam product by increasing the surface of the enlarged upper part of the cylinder housing and by reducing material intensity by optimizing the dimensions thereof. The res...
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WO/2006/060305A2 |
The disclosed invention concerns a process comprising: (a) providing a pregnant leach solution comprising copper values; (b) contacting the pregnant leach solution with an organic phase comprising a copper extractant at an extraction tem...
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WO/2006/049632A1 |
The present invention relates generally to a process for recovering copper and/or other metal values from a metal-bearing ore, concentrate, or other metal-bearing material using pressure leaching and direct electrowinning. More particula...
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WO/2006/042898A1 |
The invention relates to a process for reprocessing oxidic by-products containing arsenic, such as dust and the like, obtained in processes for pyrometallurgical copper production, such that the arsenic content is reduced to a level that...
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WO/2006/040392A1 |
The invention relates to a method for fabricating metallic copper in connection with the chloride-based hydrometallurgical production of copper. In the method the copper raw material is leached using copper (II) chloride-alkali chloride ...
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WO/2006/041695A2 |
The disclosed invention provides a process for enhanced recovery of one or more metal values from heap and/or dump leaching of ores containing the metal values, the process comprising: (a) providing a high grade leach solution obtained b...
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WO/2006/037842A1 |
The invention relates to a method for comminution of material in a grinding mill, in which method the ground material from the mill is classified by means of particle sizes. After the classification (4,24) of the ground material at least...
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WO/2006/029246A1 |
An installation for continuous copper fire refining, said system comprising the components: launder (4) transferring liquid blister copper from continuous converting furnace or from retention furnace into a first oxidation reactor; coppe...
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WO/2006/029162A1 |
A method of intensive, continuous copper fire refining, said method comprising the stages of: continuous tapping in a liquid copper (4) into a first oxidation reactor; liquid copper oxidation with combustion gases containing oxygen or wi...
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WO/2006/021031A1 |
A method of electrowinning or electrorefining copper from a copper electrolyte solution which contains chloride ions, the method comprising the steps of: (a) forming a polyacrylamide solution by dissolving polyacrylamide, having a molecu...
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WO/2006/010169A1 |
A method for optimizing a bioleaching process, at least in respect of heat generation and primary copper sulphide leaching, by actively monitoring and controlling inorganic and organic compounds in a raffinate solution, produced in the p...
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WO/2006/007484A1 |
In one aspect the present invention provides a method of recovering gold from each of at least two different refractory gold-bearing sulfidic mineral materials. A first mineral material is subjected to biooxidation pretreatment to releas...
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WO/2005/123308A1 |
A copper-containing tin powder, characterized in that it is produced by a method comprising using a copper powder as a starting material and employing a wet substitution process and contains residual copper in an amount of 30 wt % or les...
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WO/2005/118890A2 |
This invention provides a method for overcoming the adverse effects of disintegration of molten steel streams due to sub-surface growth of carbon monoxide bubbles when exposed to reduced pressures and thus permits refining of liquid scra...
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WO/2005/118894A1 |
A method of leaching copper from copper sulphide-containing concentrates, such as chalcopyrite, includes using pyrite as a catalyst for ferric reduction in order to eliminate passivation of the chalcopyrite surface, the process being car...
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WO/2005/108630A1 |
An interlaced series parallel configuration for the extraction of metal values from an metal value containing aqueous is a special series parallel configuration wherein the stripped organic is first contacted in a second extraction stage...
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WO/2005/106051A1 |
The invention relates to a method for recovering gold from an intermediate product or residue containing sulphur and iron generated in the leaching of a copper raw material in connection with the hydrometallurgical production of copper. ...
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WO/2005/103308A1 |
A method for extraction with a solvent wherein copper is separated and recovered from an aqueous chloride solution containing copper and elements coexisting with copper, characterized in that it comprises a first step of adjusting the ch...
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WO/2005/098059A1 |
The process for converting a copper sulphide matte to blister copper, is achieved by adding the copper sulphide matte and flux to a suitable agitated slag phase; and injecting, from a discharge tip at the lower end of a top-submerged lan...
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