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WO/2005/093107A1 |
A process for recovering a target metal from an oxidised metalliferous material comprises the steps of: - in a leaching stage, leaching the oxidised metalliferous material with an acidic aqueous halide solution to leach the target metal ...
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WO/2005/089935A1 |
A method for producing dispersed metal particles on a substrate and the compositions produced is disclosed. A method for producing the particles comprises exposing an organometallic and a particulate substrate to supercritical or near su...
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WO/2005/085484A1 |
A process for selectively reducing calcine from a copper/nickel containing sulfidic material includes subjecting the calcine to a mildly reducing atmosphere at relative high temperatures. CuO is selectively converted to Cu2O which can ea...
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WO/2005/083132A1 |
The invention relates to a method for the production of metallic copper in connection with the chloride-based hydrometallurgical production of copper. In this method the copper raw material is leached using a copper (II) chloride - alkal...
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WO/2005/080616A1 |
The present invention relates to a process for reducing solids containing copper to obtain elemental copper, in which solids containing copper are introduced into a fluidized-bed reactor and are reduced therein with a reducing agent at a...
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WO/2005/073414A1 |
A heap bioleaching process wherein carbon, in the form of a carbonate, carbon dioxide or organic carbon, is added to the heap when the temperature in the heap is in the range of 45oC to 60oC to increase microbial activity and thereby rai...
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WO/2005/067366A2 |
A supply system for providing a suspension smelting furnace with constant and continuous feed is disclosed. The installation of the invention comprises intermediate storage bins for fine-grained feed, a feed rate controller for accuratel...
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WO/2005/063775A1 |
The inventive method for agglomerating and passivating a used powdery mass and/or powdery organohalosilane production fines consists in mixing said used mass and/or fines with a binder selected from aluminium silicates and in producing a...
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WO/2005/056842A1 |
A bacterial culture for use in the bacterial oxidation of sulphide ores and concentrates, the bacterial culture identified by AGAL deposit Accession No. NM99/07541 or having been adapted therefrom, the bacterial culture further containin...
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WO/2005/045079A1 |
Generally, fire refining of metals is carried out by blowing through a liquid melt thick layer and significantly rarely by mixing a melt stream with a gas. Said methods are low-productive and do not ensure rapid gas access to each melt d...
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WO/2005/045078A1 |
The purpose of the invention is to remove copper selectively from a concentrated zinc sulphate solution by ion exchange. The method enables a significant reduction in the use of zinc powder during the solution purification of zinc sulpha...
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WO/2005/042790A1 |
There is provided a method for leach extraction of copper/iron/sulphur ores and concentrates including leaching the mineral with an aqueous stream containing ferric ions and sulphuric acid in the presence of oxygen, the aqueous stream in...
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WO/2005/031011A1 |
The invention relates to a method for smelting inert material (1), such as residue, in a metallurgical temperature reactor (8), wherein at least the inert material is fed into the reaction space (3) of the temperature reactor via a separ...
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WO/2005/031234A1 |
The invention relates to an industrial oven which is used to melt non-ferrous metals and for gas treating non-ferrous metals.
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WO/2005/031012A1 |
A process for leaching a value metal from a base metal sulfide ore, comprising the step of leaching the ore with a lixiviant comprising a chloride, an oxidant and hydrochloric acid is disclosed. The leaching is controlled, by use of low ...
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WO/2005/031013A1 |
A process for extraction of platinum group metals (PGM) includes smelting PGM concentrate to provide PGM-containing matte, spinel-rich slag and oxide-rich slag. The matte is enriched with regard to PGM in a conversion step by selective o...
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WO/2005/028686A1 |
The invention relates to a hydrometallurgical metal for separating the precious metals and impurities of anode sludge obtained from copper electrolysis. According to the method, anode sludge copper is separated in atmospheric leaching; c...
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WO/2005/022062A1 |
The invention relates to an electric reducing furnace (1) for carrying out reduction processes, particularly for reducing slag in order to recover metallic constituents. The electric reducing furnace operates with electrical energy that ...
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WO/2005/021808A1 |
The invention relates to a method for the pyrometallurgical production of copper in a converter. According to said method, gas is introduced into the respective molten charge during all steps thereof (charging the converter with cuprifer...
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WO/2005/019500A1 |
A method of etching and a method of regenerating a spent etching solution comprising adding metal particles to a spent etching solution to precipitate the residue metal or metals in the spent etching solution in the form of metal powders...
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WO/2005/019481A2 |
Methods and systems for removing copper from ferrous scrap are described. Some amounts of copper in ferrous scrap are removed by oxidation and subsequent mechanical impact of the oxidized scrap. Further removal of copper from the solid s...
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WO/2005/012581A2 |
Processes for metal leaching/solvent extraction are described which comprise: (a) providing a first aqueous leach pulp which comprises a mixture of leached solids and an aqueous leach solution comprising a metal, a leaching agent and wat...
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WO/2005/007905A1 |
The invention relates to a method for smelting sulfidic copper concentrates, in which method copper sulfide bearing material is smelted in a smelting furnace (1) for creating blister copper and slag. According to the method, at least par...
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WO/2005/007901A1 |
The invention relates to a method for processing sulfide ores containing precious metals, such as copper ores containing nickel. According to the method, the ore or concentrate (1) containing the precious metals is leached (2), and the i...
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WO/2005/007902A1 |
The invention relates to a method for processing concentrates, particularly concentrates produced from copper sulfide-based ores. According to the method, the concentrate (4) to be processed, obtained from ore concentration, is divided i...
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WO/2005/005672A1 |
The invention provides a process for the oxidative leaching of a metal or metal compound from a material containing the metal or metal compound which includes at least one acid producing step and at least one acid consuming step, and whe...
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WO/2004/108973A1 |
A solvent extraction composition comprising a sulphonic acid and a solvent extractant of formula (1): wherein R1 is an aryl group optionally substituted with one or more groups selected from C1-12 alkyl or halo; R2 is C1-12 alkyl group o...
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WO/2004/106561A1 |
According to the present invention there is provided a process for upgrading a copper concentrate suitable for smelting, the concentrate including gangue material containing any one or more of iron, uranium, aluminium, silicon or compoun...
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WO/2004/106560A1 |
The present invention provides a two-step dust leaching process. The first step includes a first leach followed by solid/liquid separation. The 'liquid' phase from the solid/liquid separation has a relatively high concentration of a valu...
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WO/2004/104238A2 |
Copper is extracted from aqueous copper leach solutions wherein the leach solutions have a temperature of at least 30°C. The method comprises contacting the aqueous solution with an extraction reagent of the formula (I) : wherein R is a...
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WO/2004/104012A1 |
A method for the agglomeration of a used powdery material and/or powdery fines from the production of organohalosilanes, comprising a mixture of said used material and/or fines with a binder selected from polyholosides, i.e. starches and...
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WO/2004/101834A2 |
A bio-leach method of recovering at least one base metal from sulphidic or a concentrate wherein a residue of a primary bioleach of the concentrate, under mesophilic and moderate themophilic conditions, is processed to recover at least o...
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WO/2004/101832A2 |
Methods of enhancing the segregation roast through the use of microwave radiation and chloride ions are disclosed. The processes provide means of recovering metals trapped in ores and slags by reaction of these materials with carbon, chl...
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WO/2004/098775A1 |
A process is provided for the direct recovery of non-ferrous metals (nickel, cobalt, copper etc) from raw materials such as ores, concentrates, semiproducts and/or solutions by ion exchange. A non-ferrous ore or concentrate is leached wi...
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WO/2004/096717A2 |
The present invention relates to a method and apparatus for removing and recovering metal such as copper from various kinds of waste water containing copper. A method for treating waste water includes treating waste water in a copper tre...
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WO/2004/096400A2 |
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 5 extraction sta...
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WO/2004/096711A1 |
An eco-friendly method is designed to recycle copper contained in the discarded printed circuit boards and the like. The method involves use of various acids, such as hydrochloric acid, sulphuric acid, oxalic acid, to bring about the ion...
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WO/2004/094676A1 |
A solvent extraction composition is comprised of one or more orthohydroxyarylaldoximes and one or more othohydroxyarylketoximes, and one or more equilibrium modifiers in an amount providing a degree of modification of the orthohydroxyary...
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WO/2004/092448A2 |
Precious metal-containing mineral material is subjected to an acidic thiocyanate leach to dissolve the precious metal as a precious metal-thiocyanate complex. A feed of the thiocyanate leach solution may include a large molar ratio of fe...
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WO/2004/092425A1 |
The method is referred to hydrometallurgical process and serves for recovery of nonferrous, rare and precious metals from sulfide minerals and concentrates. The invention is aimed at creating conditions for the most complete extraction o...
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WO/2004/083468A1 |
A method for suppressing the oxidation of sulfide minerals in a sulfide ore, which comprises adding an antioxidant containing an organic acid having a carboxyl group as a primary component and also containing a vegetable polyphenol to th...
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WO/2004/083467A2 |
Cermet material obtained from unused inert anodes, used inert anodes and cermet used in the production of inert anodes is beneficiated into a nonferrous metal concentrate composition from which metal values contained in the composition m...
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WO/2004/081243A1 |
A method for recovering platinum group elements, wherein an oxide based raw material accompanying platinum group elements, a copper oxide, a solid carbonaceous reducing agent and a flux are charged into a gastight electric furnace equipp...
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WO/2004/081241A1 |
An improved heap leach process for the bacterial heap leaching of base metal sulphide ores, the process characterised by the addition of elemental sulphur to the ore, whereby sulphur oxidising bacteria indigenous to, or added to, the ore...
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WO/2004/080599A1 |
The invention relates to a method for controlling the partial pressure of oxygen when mutually separating minerals in the different process steps of the separation process. In order to control the partial pressure of oxygen, the gases fe...
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WO/2004/079023A1 |
The present invention relates to a method of bioleaching mineral sulphides at high temperatures and extremely low pH. In particular, the invention relates to a method which employs a microorganism of the genus Acidianus which is a thermo...
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WO/2004/070067A2 |
A method of forming a nanocrystalline metal, comprising the steps of: providing a reaction mixture comprising a metal precursor and an alcohol solvent; continuously flowing the reaction mixture through a reactor; applying microwave or mi...
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WO/2004/067449A1 |
The RTB BOR-Majdanpek mine has been exploited for more than one hundred years so today we have a mine with extremely low concentration of copper (below 0,6 % per tonne). What we also have is 1500 km?2¿ of degraded area. Our wish is to f...
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WO/2004/057041A1 |
The invention relates to a method and a plant for the heat treatment of sulfidic ores, in which solids are heated to a temperature of approximately 450 to 1500 °C in a fluidized bed reactor (1). In order to improve the energy utilizatio...
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WO/2004/050925A1 |
The invention relates to a method for treating slag created in the production of blister copper processed directly from concentrate in a suspension smelting furnace, such as a flash smelting furnace, in order to recover the copper, so th...
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