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WO/1996/041027A1 |
A process for the extraction of a metal from an ore or concentrate comprises subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic solution containing halogen ions and a source of bisulphate or s...
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WO/1996/038220A1 |
A process of selectively separating a target metal contained in an aqueous solution by contacting the aqueous solution containing a target metal with an aqueous solution including a water-soluble polymer capable of binding with the targe...
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WO/1996/038381A1 |
A method of biotreating a solid material to remove an undesired compound using a nonstirred surface bioreactor is provided. According to the method, the surface of a plurality of coarse substrates is coated with a solid material to be bi...
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WO/1996/037325A1 |
Cobalt metal agglomerates consist of peanut-shaped primary particles having a mean particle size in a range from 0.5 to 2 'mu'm. Also disclosed is a process for producing the same and their use.
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WO/1996/037324A1 |
The present invention concerns cobalt metal agglomerates consisting of peanut-shaped primary particles, a method of producing them and their use. The primary particles have a mean particle size of between 0.1 and 0.7 'mu'm. The proposed ...
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WO/1996/029439A1 |
The present invention relates to a method of processing a sulphide mineral composition which at least partly comprises an iron containing mineral, the method comprising the steps of: (a) milling said composition to a particle size P80 of...
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WO/1996/020291A1 |
A process is provided for selectively recovering nickel by ion exchange absorption from a Ni/Co sulfuric acid feed solution (6) obtained from limonite ore (1) which is pressure leached with sulfuric acid (2) and then neutralized (3) and ...
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WO/1996/019593A1 |
A process for the extraction of copper from a sulphide copper ore or concentrate comprises subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic chloride solution to obtain a resulting pressure o...
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WO/1996/014953A1 |
A process is provided for the production of a nickel metal powder by reduction of an ammoniacal nickel (II) carbonate solution essentially free of metallic nickel. A soluble silver salt is added in an amount to provide a soluble silver-t...
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WO/1995/009250A1 |
A process for converting a copper or nickel matte comprising a substantial weight amount of an iron based material. During a first step of the process substantially all of the iron based material is oxidized with an oxygen comprising gas...
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WO/1995/001461A1 |
The invention relates to a method for extracting metals from spent catalysts on the basis of Al2O3, which method involves calcining the catalyst - if contaminated with carbon and hydrocarbons and the like - in an oxidizing environment, h...
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WO/1994/010350A1 |
A process for the production of powdered metallic cobalt including ultra fine metallic cobalt by reduction of cobaltous ammonium sulphate solutions. A soluble silver salt, preferably silver sulphate or silver nitrate, is added in an amou...
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WO/1994/000606A1 |
A process for producing one or more metals from a mineral feedstock (12) is defined. The mineral is fed to a leaching apparatus (10) wherein it is contacted with electrolyte (14). The leaching apparatus has zones of decreasing oxidation ...
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WO/1993/024666A1 |
Copper and/or nickel sulphide ore concentrates of high intrinsic energy value are oxygen smelted by introducing such concentrates via feeds (32) into a closed loop extraction circuit in which a molten sulphide carrier composition is forc...
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WO/1993/008310A1 |
A process suitable for the extraction or recovery of metal values from arsenic containing feeds and including the steps of: a) treating the feed with a nitric acid-containing leachant solution in order to dissolve the desired metals; b) ...
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WO/1993/001320A1 |
A process for recovering nickel that is in soluble form and in relatively low concentrations, typically up to 2 wt.%, in a liquor, comprises: (a) precipitating nickel from solution (preferably as a hydroxide or a sulphide); (b) adding an...
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WO/1992/022673A1 |
The invention relates to a process for the treatment of complex metal sulphide materials and for the recovery of metal values from such materials. The process is characterized by first subjecting the material to a leaching process under ...
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WO/1991/013179A1 |
A process for recovering heavy metals from spent catalysts on an alumina support material comprising calcining the catalyst feed material to remove impurities and smelting the calcined feed in an electric arc furnace, preferably with scr...
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WO/1991/005879A1 |
A process for smelting of iron containing, nickel oxide material, such as nickel laterite, for the recovery of nickel. The oxide material is subjected to a smelting operation in a fuel fired furnace of a top-submerged lancing furnace sys...
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WO/1989/010791A1 |
A new depressant for use in enhanced separation of polymetallic sulphides is described. The depressant agent is used in conjunction with convention collector agents and frothing agents in the flotation separation of copper, nickel, lead,...
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WO/1989/009289A1 |
The invention relates to a process for recovering non-ferrous metal values such as nickel, cobalt, copper, zinc, manganese and magnesium from material containing said metals, by converting the non-ferrous metal values into sulphates by u...
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WO/1988/009389A1 |
A process for the separation and recovery of nickel from an ammoniacal ammonium carbonate liquor containing nickel II ions and cobalt III ions by liquid-liquid extraction where ammoniacal ammonium carbonate solutions are the only aqueous...
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WO/1987/005052A1 |
A process for the recovery of metal as an oxide from a material in which the metal is present in the form of finely divided particles on an inert carrier substance dispersed in an organic substance, wherein said material is fed in a liqu...
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WO/1987/001731A1 |
Ultramafic rock material containing or which is serpentinized so as to contain substantially or completely serpentinized material, or alternatively, clay material containing structural water, is subjected to a temperature and pressure fo...
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WO/1986/006361A1 |
Preparation of metal carbides, nitrides, borides, silicides and phosphides, also metal alloys and pure metals, by providing a precursor in which there are organic ligands bonded to the metal or metals, such precursor having the element X...
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WO/1986/003230A1 |
A process for the reduction of Co+3 to Co+2 in an aqueous ammoniacal solution in the presence of a porous cathode. Prior to this reduction, the aqueous ammoniacal solution is passed over activated carbon to remove organic contaminants fr...
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WO/1986/002949A1 |
The refining agent is a granular alloy of a metal selected in the group of alkaline-earth metals and zinc with a metal element in small proportions susceptible of providing the alloy with a substantially lower melting point. The alloy ma...
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WO/1985/004905A1 |
Method for slag chemistry control in a refractory lined vessel during the process of refining metal by the injection of oxygen gas during a period of oxidation and by the injection of nonoxidizing gas or gases during a period of reductio...
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WO/1985/001750A1 |
Sulphidised nickel silicate and/or sulphidic nickel ores and/or concentrates in the form of dry and/or wet pellets or filter cake, wetted down material or slurries mixed with fluxes, to avoid dust, are added to, or as powder, pneumatical...
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WO/1985/001670A1 |
Processes for treating aqueous streams, such as waste streams and metal ion containing streams by utilizing reverse osmosis and electrodialytic water splitting. The processes use a minimum of treatment water, recovers chemical reagents a...
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WO/1984/004759A1 |
Metals are extracted from ores which exist in the form of oxides or sulphides, by treating the ore with hydrogen fluoride and/or fluorosilicic acid. There are two preferred forms. When hydrogen fluoride is used, the ore is initially crus...
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WO/1984/003305A1 |
A monoalkyl alkylphosphonate represented by the formula (I), (wherein R1 and R2 each represents an alkyl group, with R1 containing 4 carbon atoms and R2 containing 8 carbon atoms) is used as an extractant for separating and recovering ni...
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WO/1982/001725A1 |
A method of recovering copper and nickel from sulphidic minerals containing copper, nickel and iron comprises the steps of roasting the mineral, preferably to provide magnetite; sulphating, for example with sulphuric acid, sulphur trioxi...
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WO/1981/001159A1 |
Process and apparatus for recovery of hydrogen-reduced metals from aqueous salt solutions at a porous hydrophobic catalytic barrier (2). Previously, the prior art provided a diffusion barrier between a hydrogen anode and a cathode to pre...
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WO/1980/002567A1 |
Cobalt is recovered by treating aqueous solutions containing ammonia and cobalt ions with a sufficient amount of an acid in the presence of a catalyst to convert the cobalt ions to a cobalt hexammine ion which is precipitated and separat...
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WO/1980/002568A1 |
Fine particle size cobalt metal powder is prepared by treating an aqueous solution of a soluble cobaltic ammine halide with a sufficient amount of a soluble metallic hydroxide to form a cobalt containing precipitate. The precipitate is s...
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JP7463511B2 |
A 2-step high temperature process for recovering Ni, Co, and Mn from various sources comprises preparing a metallurgical charge comprising materials containing Ni, Co, and Mn, and Si, Al, Ca and Mg as slag formers; smelting the charge wi...
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JP7462570B2 |
Process for the recovery of transition metal from spent lithium ion batteries containing nickel, wherein said process comprises the steps of (a) heating a lithium containing transition metal oxide material to a temperature in the range o...
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JP2024514966A |
The present invention relates to the technical field of collecting used lithium ion batteries, and includes the steps of short-circuit discharging, dismantling, crushing, roasting, and sieving the used lithium ion batteries to obtain ele...
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JP2024514446A |
A process for removing impurities from a crystallized metal sulfate, the process comprising contacting the crystallized metal sulfate with a metal sulfate-enriched liquid. The metal may be cobalt, nickel or manganese, and the impurity ma...
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JP7459517B2 |
To provide an autoclave capable of suppressing clogging of a steam pipe; and to provide an autoclave operation method.An autoclave 1 comprises: a tank 10 in which slurry is retained; and a common pipe 23 that supplies steam or cooling wa...
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JP7459660B2 |
To provide a method for smelting a nickel oxide ore capable of efficiently producing a high-quality metal.A method for smelting a nickel oxide ore includes: a mixture step of obtaining a mixture containing a nickel oxide ore and a first ...
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JP2024514662A |
The present invention relates to a method for extracting metals from the black aggregate of a lithium ion battery, where the black aggregate contains anode material and cathode material of the battery and some copper, and the cathode mat...
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JP7459060B2 |
A method for recovering NiSO4.6H2O crystals from a nickel rich organic phase is provided. The method includes contacting a nickel rich organic phase with an aqueous strip solution of sufficient H2SO4 concentration to extract nickel from ...
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JP2024512988A |
The present invention relates to a method for dissolving a battery positive electrode material, which includes a step of immersing a positive electrode material containing lithium and optionally cobalt and/or nickel in an acidic solution...
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JP7453339B2 |
A process is disclosed for the recovery of valuable metals from oxidic ores, in particular from polymetallic nodules. The process is suitable for the recovery of Cu, Co, Ni, Fe, and Mn, which are the main metals of interest in such polym...
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JP7452201B2 |
To provide a device and method for producing a nickel sulfate solution capable of dissolving a nickel briquette in a short time.There is provided a device for producing a nickel sulfate solution which comprises a dissolution tank 31 to w...
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JP2024036835A |
The present invention provides a metal recovery agent capable of recovering metals under an artificially controlled environment. A metal recovery agent includes a reducing compound that is at least one selected from the group consisting ...
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JP2024511759A |
In the method for producing cobalt sulfate salt, a feed solution containing cobalt sulfate and an aqueous sulfuric acid solution is prepared. The feed solution is evaporated and crystallized to produce a first solution. The first solutio...
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JP7447643B2 |
To provide a method for effectively recovering valuable metals when recovering valuable metals contained in a battery.A method for recovering valuable metals from a waste battery includes: a roasting step of roasting the waste battery to...
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