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WO/2004/027099A1 |
The invention discloses a method of controlling a heap leach process through controlling an irrigation rate of a heap as a function of at least one of an aeration rate of the heap, a determination of advection at least at one predetermin...
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WO/2004/027100A1 |
The invention discloses a method of introducing microorganisms into a heap of material for bio-assisted heap leaching by preparing microorganisms substantially without exopolymers on their external cell walls; adding such microorganisms ...
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WO/2004/022486A1 |
A high purity copper sulfate having a purity of 99.99 % or higher and a content of a transition metal such as Fe, Cr or Ni of 3 wt ppm or less; and a method for producing the high purity copper sulfate which comprises dissolving copper s...
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WO/2004/022796A1 |
Disclosed is a process for recovering components from a liquor containing a complex or compound electrochemically dissociable to form a cation (C) and an oxidisable species for recovery including: (a) delivering the liquor containing sai...
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WO/2004/022795A1 |
The process of the present invention recovers platinum group metal(s), such as platinum and palladium, from PGM-containing materials containing base metals, such as copper and nickel. The process controls sulfur levels by using solvent e...
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WO/2004/022604A2 |
A circuit configuration for a metal solvent extraction plant comprising: A) an extraction section for extracting metal ions from an aqueous leach solution containing the metal ions with an organic solvent solution containing at least one...
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WO2003087416A9 |
PGMs can be extracted from a source material by heat-treating the source material to form a residue containing PGMs in a cyanide leachable condition and, thereafter, cyanide leaching the resudue using a solution containing cyanide to for...
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WO/2004/016376A1 |
A process for forming metal nanocrystals involves complexing a metal ion and an organic ligand in a solvent and introducing a reducing agent to reduce a plurality of metal ions to form the metal nanocrystals associated with the organic l...
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WO/2004/016816A1 |
A process for recovering valuable metals from laterite ores and concentrates that are contaminated with iron is disclosed. The process includes reducing ferric ions to ferrous ions in a leach liquor containing a valuable metal and iron i...
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WO/2004/013361A1 |
A dry method of recovering a platinum group element, comprising charging a substance containing platinum group element to be treated and a copper source material containing copper oxide together with a flux component and a reducing agent...
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WO/2004/007777A2 |
Metallurgical vessel for iron and steel making comprising a bottom portion, a sidewall and a lance arrangement of at least two lances for supplying oxygen containing gas to the interior of the vessel in operation wherein each lance compr...
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WO/2004/001098A1 |
A method for electrolytically refining blister copper, in which method copper concentrate is smelted and oxidized in at least one metallurgic oxidizing reactor into blister copper that is granulated into metal granules (7), and the metal...
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WO/2003/104504A1 |
The invention relates to a method for producing blister copper, according to which method copper concentrate (5), flux (6) and oxygen-enriched air (7) are fed together into a suspension smelting furnace (1), such as a flash smelting furn...
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WO/2003/105256A1 |
A method for manufacturing a core material for an electrode plate, which comprises immersing the core material (11) comprising nickel or a nickel-plated steel and containing copper incorporated therein as an impurity in an aqueous soluti...
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WO/2003/102250A1 |
A method of treating ore particles to facilitate subsequent processing of the ore particles to recover valuable components from the ore is disclosed. The method includes exposing the ore particles to microwave energy and causing structur...
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WO/2003/100105A1 |
A process for the extraction of a base metal such as Ni, Co or Zn, from a sulphide ore or concentrate containing copper and the base metal comprises the step of subjecting the ore or concentrate to pressure oxidation in the presence of o...
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WO/2003/089675A1 |
The invention relates to a method for the removal of metal impurities in chloride-based copper recovery processes. The amount of impurities in a strong chloride solution of monovalent copper can be reduced according to the method down to...
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WO/2003/089677A1 |
A Process for the treatment or removal of impurities, such as arsenic, antimony or bismuth, generated as by-products during smelting and refining of copper concentrates, comprises subjecting the by-products to pressure oxidation along wi...
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WO2003010362B1 |
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 extraction techniques o...
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WO/2003/069025A2 |
Process for producing a copper-containing aqueous solution, in which a copper mass is dissolved in the presence of an oxidant in an aqueous leach liquor containing monoethanolamine and (HMEA)2CO3. The leach liquor is produced by partiall...
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WO/2003/062498A1 |
The present invention describes a process for the electrolytic recovery of a metal, such as copper, from a single halide solution, wherein the single halide solution includes a variable valence ion, such as managanese, which does not con...
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WO/2003/060172A2 |
A method for the treatment of sulfide ores containing silver by pressure oxidation (108). The method includes the addition of a sulfate-binding material (106) to reduce the formation of jarosite species during pressure oxidation (108). S...
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WO/2003/054237A1 |
A solvent extractant of Formula (1) is provided. Preferred extractants are 4-acyl-(3H)-pyrazol-3-one in which the acyl group is an alkylacyl group comprising a tertiary alpha branched alkyl group with at least eight carbon atoms, or a se...
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WO/2003/049867A1 |
A new reagent for the application in the preparation of mineral raw materials, mainly sulphide and oxyde mono-and polymetallic ores of non-ferrous metals, which are used as a corrosion inhibitor of the equipment and grinding bodies and a...
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WO/2003/050464A1 |
The invention relates to a method for increasing the capacity of a waste−heat boiler (1) processing gases obtained from a metallurgic smelting furnace, such as a flash smelting furnace, and for reducing dust accretions, where liquid is...
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WO/2003/048400A2 |
A method of treatment or purification of a molybdenum concentrate also containing copper, comprises the step of subjecting the molybdenum concentrate to pressure oxidation in the presence of oxygen and a feed solution containing copper (...
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WO/2003/038138A1 |
A refining process for non−ferrous melt and equipment thereof. The process, including an adsorbing purification by letting a purified gas pass through the non−ferrous melt, is characterised in that, a vaccume is applied above the non...
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WO/2003/038137A1 |
A process for recovering copper from chalcopyrite is disclosed. The process includes oxidising sulphur in chalcopyrite with a solution under predetermined contact conditions and thereby releasing at least part of the copper in the chalco...
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WO/2003/036210A1 |
The invention relates to an arrangement (1, 12, 16) for continuously tapping a molten phase, such as matte, from a smelting furncae, such as a flash smelting furnace, said arrangement comprising a matte tapping hole (5) provided in the f...
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WO/2003/035916A1 |
The invention relates to the removal of bivalent copper from copper chloride solution in connection with the hydrometallurgical production of copper. In the copper production process, a copper−bearing raw material is leached with a chl...
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WO2003010345B1 |
The present invention is directed to a process for recovering metal values from metal-bearing materials. During a reactive process, a seeding agent is introduced to provide a nucleation site for the crystallization and/or growth of solid...
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WO/2003/033982A1 |
The invention relates to a melt launder (1, 9, 10) comprising a bottom and edges, said melt launder being particularly meant to be used for tapping a molten phase, such as slag, from a smelting furnace, which melt launder is manufactured...
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WO/2003/027339A1 |
A process for the recovery or removal of metal species from a solution or slurry comprising the steps of: contacting the solution or slurry with a poly(alkyleneimine) polymeric material to load the poly(alkyleneimine) polymeric material ...
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WO/2003/025236A1 |
The invention relates to a method to produce blister copper or high grade matte in a smelting reactor directly from a sulfidic copper concentrate containing material and/or finely ground copper matte, whereby oxygen-containing gas, coppe...
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WO/2003/023077A1 |
A process for the recovery of zinc metal from a zinc mineral includes the steps of leaching the zinc mineral in a solution including a halide species formed from two or more different halides, to leach the zinc into the solution. The zin...
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WO/2003/020647A1 |
A method of treating a heavy−metal−containing wastewater with a sulfidizing agent. A sulfidizing agent is added to the heavy−metal−containing wastewater to sulfide the heavy metal in such a manner that the state in which hydrogen...
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WO/2003/014422A1 |
An improvement in the solvent extraction process for recovering metal values, i.e. copper, from acidic aqueous solutions containing copper and iron which may also include chloride, and more particularly to an improvement which provides f...
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WO/2002/099144A1 |
A process for the selective removal of a least a portion of at least one precious metal in the form of a metal-cyanide complex from an ion-exchange resin to which the precious metal and at least one base metal-cyanide complex are bound, ...
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WO/2002/092863A1 |
The invention relates to a method for the stabilization of the production capacity of an extraction plant extracting metals in a process, where the metal content of the feed solution varies. For the stabilization of capacity, the extract...
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WO/2002/089944A1 |
High purity ammonium dimolybdate or molybdenum oxide is produced by the pressure oxidation of low grade molybdenite concentrates or molybdenum intermediates. The process entails nearly complete oxidation of the sulfide minerals while opt...
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WO/2002/079529A1 |
A method for the direct preparation of metal from metal-containing material comprising providing metal-containing material and a reducing agent, mixing the metal-containing material with the reducing agent to form a mixture charging the ...
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WO/2002/076378A2 |
The invention relates to a method for preparing stable cupric hydroxide by removing the ferrous ion from the starting cupric solution. The ferrous ion is oxidised into ferric ion and the ferric ion is precipitated by raising the pH of th...
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WO/2002/077301A1 |
The invention relates to a metal ion extractant material for use in the extraction of metal ions from a solution or slurry, the extractant material being based on an ethyleneimine-containing polymer. The ethyleneimine-containing polymer ...
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WO/2002/075006A2 |
A novel process for refining high or low impurity blister copper containing S, As, Sb, Pb, Ni, Bi, Se, and/or Te to anode quality by means of a solution containing sulphates and alkali oxides is provided. More specifically, the process c...
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WO/2002/070757A1 |
A method for the bacterially assisted heap leaching of chalcopyrite, the method characterised by the steps of: providing a chalcopyrite containing ore heap to oxidise sulphide minerals therein, the heap containing and/or being inoculated...
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WO/2002/070758A1 |
An improved process for the bioheap leaching of copper ores is disclosed. In this process, the bioheap leaching is conducted at below or around Eh$m(f)550mV. Preferably the concentration of Fe?2+¿ and Fe?3+¿, which are generated during...
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WO/2002/061157A2 |
A silica-polyamine based extraction material selectively removes copper from low concentration, low pH leach solutions separating copper from ferric iron or chloride ions. The silica-polyamine base is a reaction product of a polyamine an...
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WO/2002/058081A1 |
The object of this invention is to provide a device for recovering copper from waste electric lines. This device consists of an electric line intake hopper (2), an extrusion cutting unit (3) cutting the waste electric lines to form waste...
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WO/2002/055746A1 |
The invention relates to an apparatus for feeding finely divided solids, containing at least sulphidic metal concentrate, and oxygenous oxidizing gas into a suspension smelting furnace, said apparatus comprising elements for conducting s...
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WO/2002/050319A1 |
This invention relates to a method where sulfidic iron-bearing copper concentrate is leached on the countercurrent principle, in a chloride environment. The leaching takes place with the aid of bivalent copper and an oxygen-bearing gas a...
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