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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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WO/2002/042504A2 |
A method of producing bioproducts which includes the steps of establishing an environment wherein microorganisms oxidise a slurry containing metal sulphide minerals, supplying a feed gas containing in excess of 21 % oxygen by volume to t...
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WO/2002/037044A1 |
The invention relates to a cooling element, in particular to be used in connection with furnaces and the like related to metal production processes, said element comprising a housing (1) provided with a channel system (2) for cooling wat...
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WO/2002/027072A1 |
A hydrometallurgical process characterised at least in part by an electrolytic method enabling the direct generation of ferric ions at an anode in the presence of chloride ions, without the formation of chlorine gas, the process allowing...
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WO/2002/024966A1 |
There is provided a process for the recovery of nickel and cobalt values from a sulfidic flotation concentrate. The process involves forming a slurry of the flotation concentrate in a sulfuric acid solution, and subjecting the slurried f...
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WO/2002/020856A1 |
The present invention relates to a process for producing cupric carbonate from waste liquid of PCB corrosion. Waste liquid of PCB corrosion containing cupric chloride is being produced in a great quantity due to the industrial developmen...
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WO/2002/014765A1 |
The invention relates to a bottom structure of a suspension smelting furnace to be used in a smelting furnace (1), in the reaction space (2) whereof of sulfidic raw material containing metal, such as copper, nickel or lead, is smelted in...
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WO/2002/008474A2 |
The present invention relates generally to a process for the production of sulfuric acid and liberation of metal values such as copper and precious metals from materials containing sulfur through pressure leaching operations. In accordan...
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WO/2002/008475A2 |
The present invention relates generally to a process for recovering copper and other metal values from metal-containing materials using controlled, super-fine grinding reducing the particle size to less than 25 micrometer and medium temp...
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WO/2002/008125A2 |
The present invention relates generally to a process for recovering copper and other metal values from metal-containing materials through pressure leaching operations. In accordance with the various aspects of the present invention, meta...
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WO/2002/008476A1 |
The invention relates to a method and to a device for reducing the oxygen content of a copper melt. One or a plurality of porous plugs is disposed in the lower zone of the copper melt, when seen in a perpendicular orientation, from which...
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WO/2002/001131A1 |
The invention relates to an apparatus for mechanically breaking up and detaching dust accretions created by process gases and accumulated on the inner walls of a suspension smelting furnace and/or a waste heat boiler permanently connecte...
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WO2001036693B1 |
A bio-leaching method is provided for recovering metal from a metal containing ore. The ore is subjected to contact with a microorganism selective to the oxidation of sulfur. A sulfur containing compound is mixed with the microorganism b...
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WO/2001/094650A2 |
Methods for recovery of naturally occurring nanoclusters are provided involving providing an aqueous nanacluster slurry and desorbing the nanoclusters from the surface of host substrate on which the nanoclusters are bound, followed by is...
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WO/2001/091873A2 |
Sulfonamide polymer matrices and their various uses are disclosed. Among the uses is the configuration of the matrix with a porous support membrane to form a semipermeable membrane of the invention. The matrix of the invention is ultrath...
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WO/2001/089670A1 |
The present invention is directed to an improved process for the recovery of metal ions from metal-containing aqueous solutions using a supported liquid membrane (SLM) whereby the pH of the metal-containing solution is preferably adjuste...
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WO/2001/089654A2 |
Semi-permeable membranes are described that allow for the efficent processing of many liquid based feed solutions, particularly those that contain acids. The membranes of this invention are able to process such feeds with high permeate r...
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WO2001056684A9 |
The invention relates to a method of treating a halogen containing solid or semi solid waste material from a flue gas cleaning process, wherein the amount of alkaline compounds is sufficient to provide a suspension of the waste material ...
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WO/2001/086027A1 |
A chemical process is disclosed for extracting copper or iron (M). The copper or iron is exposed to a leaching solution comprised of a metal salt (m) such that the copper or iron (M) is oxidized and the metal ion (m) is reduced according...
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WO/2001/068927A1 |
A continuous nickel matte converter and method for the efficient production of low iron nickel-rich mattes from high-iron nickel-rich mattes, with minimal environmental impact. The present invention processes high-iron, nickel-rich prima...
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WO/2001/062993A1 |
Disclosed is a process for recovery of cyanide and metals from a liquor containing complexes of cyanide and metal typically generated by a metallurgical or industrial process. The process involves electrochemical dissociation of the meta...
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WO/2001/061059A1 |
The invention relates to a continuously operating method for removing impurity gases dissolved in metal by using a reactant (7) that remains in a solid state and is lighter than the metal to be refined. In the method, at least flows (P) ...
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WO/2001/061058A1 |
Use of a mixture of a C9 alkylsalicylaldoxime and a ketoxime as an extractant in a water-immiscible organic solvent solution in a metal extraction circuit to enhance the transfer of iron values to a dilute acid wash solution when the met...
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WO/2001/049389A1 |
The present invention provides a method for selectively removing metal ions of interest from a solution (12), such as the wastewater from a chemical mechanical polishing process. The method comprises contacting a solution (12) containing...
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WO/2001/049890A1 |
The invention relates to a method of producing blister copper pyrometallurgically in a suspension reactor directly from its sulfidic concentrate. According to the method the copper sulfide concentrate is fed into a suspension reactor, in...
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WO/2001/044521A1 |
The present invention relates to a process for recovering copper from solutions from the recovery of iodine from industrial wastes from the production of ionic and non-ionic iodinated X-ray contrast agents by use of chelating resins suit...
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WO/2001/044524A1 |
The invention relates to a method for the extraction of metals from copper sulphide and/or copper iron sulphide ores with microbiological- and chemical-type leaching steps for dissolution of the metals, which comprises the following step...
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WO/2001/038590A2 |
Multistage process for the recovery of valuable metals from an acidic, aqueous leachate solution in which valuable metal ions are present in concentrations of from 10 to 40 g/l, which comprises (I) liquid/liquid extraction of the leachat...
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WO/2001/031072A1 |
A method of operating a bioleach process for the leaching of a sulfide bearing oreor concentrate includes subjecting a bioleach slurry which includes dissolved oxygen, dissolved carbon dioxide, sulphide and microorganisms to a bioleach s...
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WO/2001/023628A1 |
A method of which includes the steps of introducing an acidic solution containing arsenic(V), copper, ferric iron and ferrous iron into a first tank of a series of continuously stirred tank reactors and, in the first tank, adding air to ...
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WO/2001/023627A1 |
A hydrometallurgical process utilizing an atmospheric calcium chloride leach to selectively recover from various metal feed stocks (consisting of elemental metals, metal oxides, metal ferrite, metal hydroxide, metal carbonates, metal sul...
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WO/2001/023067A1 |
Compositions and methods for selectively binding metal ions from source solutions are disclosed. The compositions include 1) polyamide-containing ligands covalently bonded to a particulate solid support, and 2) polyamide-containing polym...
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WO/2001/018262A2 |
A method of bioleaching a slurry containing sulphide minerals which includes the step of supplying a feed gas containing in excess of 21% oxygen by volume, to the slurry, increases the rate of oxygen transfer from the gas to the liquid p...
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WO/2001/018264A1 |
A process for the bacterial oxidation of sulphide ores and concentrates characterised in that the ore or concentrate is leached with a mixed bacterial culture at a temperature of between about 40 to 650°C, and at a pH of between about 0...
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WO/2001/018266A1 |
A method of recovering zinc from a zinc bearing sulphide mineral slurry which includes the steps of subjecting the slurry to a bioleaching process, supplying a feed gas which contains in excess of 21% oxygen by volume, to the slurry, and...
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WO/2001/018267A1 |
A method of recovering a precious metal from a sulphide mineral slurry which contains the precious metal which includes the steps of subjecting the slurry to a bioleaching process, supplying a feed gas which contains in excess of 21% oxy...
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WO/2001/018270A1 |
A process for recovering nickel and copper from a concentrate which includes the steps of subjecting the concentrate to a treatment phase to produce a first leach solution which contains predominantly copper and a second leach solution w...
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WO/2001/018268A1 |
A method of recovering nickel from a nickel bearing sulphide mineral slurry which includes the steps of subjecting the slurry to a bioleaching process, supplying a feed gas which contains in excess of 21 % oxygen by volume, to the slurry...
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WO/2001/018263A1 |
A method of oxidising a slurry containing solid reactants which includes the step of supplying a feed gas containing in excess of 21 % oxygen by volume, to the slurry. Preferably the feed gas contains more than 85 % oxygen by volume. The...
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WO/2001/018269A1 |
A method of recovering copper from a copper bearing sulphide mineral which includes the steps of subjecting the slurry to a bioleaching process, supplying a feed gas which contains in excess of 21 % oxygen by volume, to the slurry, and r...
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WO/2001/018265A1 |
The invention concerns a method and a device for treating copper sulphide containing ore, comprising a step of biological leaching whereby the minerals are subjected in reactors (1) in cascade arrangement, wherein the temperature is main...
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WO/2001/016385A1 |
A method of recovering base metal from a tailings dump which includes the steps of: aerating a surface layer of the dump; adjusting the pH and the moisture content of the surface layer to provide conditions favourable for bacterial oxida...
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WO/2001/016383A2 |
A process is disclosed for extracting a first metal from a material containing said first metal, including the step of treating said material with an aqueous alkaline solution containing an oxidising agent and complexes of ions of one or...
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WO/2001/016384A1 |
The invention provides a hydrometallurgical process for treating metal-containing sulfide ores and concentrates, comprising reacting said metal-containing sulfide with concentrated sulfuric acid at a temperature of between about 300 °C ...
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