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WO/2007/099365A1 |
A process for re-processing of a Fischer-Tropsch catalyst is described comprising the steps of; (i) de-waxing the Fischer-Tropsch catalyst, (ii) subjecting the de-waxed catalyst to hydrometallurgical leaching or extraction to separate ca...
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WO/2007/099315A1 |
A process for reducing a metal-containing material, the process comprising: providing a metal-containing material (5), heating said metal-containing material by convective and/or conductive and/or radiative means (2), exposing said metal...
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WO/2007/095866A1 |
The invention relates to the processing of lateritic, nontronitic, limonitic, smectic and argillaceous minerals through the hydrometallurgical route specifically using pressurised acid technology, comprising the direct preparation of the...
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WO/2007/095865A1 |
The invention relates to the processing of lateritic minerals through the hydrometallurgical route specifically using pressurised acid technology, comprising treatment with H2SO4 of the tails from the pressurised acid leaching process at...
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WO/2007/092994A1 |
A process for the leaching of metals from highly oxidised laterite ores. The ore is admixed with an acidic aqueous medium, preferably a solution of sulfuric acid and the resulting mixture is treated with a sulfur reducing agent so as to ...
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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/2007/087698A1 |
The present invention is directed to a hybrid process using ion ex- change resins in the selective recovery of nickel and cobalt of leaching effluents that is comprised of the steps of processing (1 ) the laterite ore (M), which is then ...
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WO/2007/088010A1 |
The present invention relates to the use of monodisperse, macroporous chelating resins in metal winning in hydrometallurgical processes, in particular in resin-in-pulp processes. According to the invention, the monodisperse, macroporous ...
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WO/2007/079531A1 |
A method (10) for the recovery of nickel and cobalt from leach solutions in the presence of iron and/or chrome, the method comprising the steps of: i) adding a reductant (13) to a leach solution containing nickel, cobalt and iron, such t...
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WO/2007/079532A1 |
A hydrometallurgical method for precipitating iron in the form of hematite from leach solutions containing nickel, cobalt and iron, characterised by the steps of: i) pre-neutralising (12) the leach solution by the addition of a neutralis...
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WO/2007/074360A2 |
A process is described for leaching a value metal from an ore containing said value metal, the process including the steps of leaching the ore in the presence of hydrochloric acid so as to form a soluble metal-chloride salt in a leach so...
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WO/2007/071108A1 |
A process of producing superfine cobalt powder with circulation technology is provided, which synthesizes Co-compound precursor by means of twice extracting and atomization hydrolyzing, then the Co-compound precursor is subjected to expl...
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WO/2007/053919A1 |
The combined leaching process comprises a dissolution process of the soluble constituents of an ore by means of the combined execution of two or more serial leaching phases with the first phase comprising atmospheric leaching (AL) and th...
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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/2007/039665A1 |
The invention relates to a method for processing a nickel product from nickel- bearing sulphidic raw materials, such as nickel sulphide concentrate or ore. According to the invention, the raw material is leached in atmospheric conditions...
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WO/2007/039938A1 |
A method of roasting in which both the C content and S content of roasted ore can be lowered to 0.5% or below and in which an Mo yield of 90% or higher can be ensured. For recovery of the valuable metals of V, Mo and Ni by reducing of a ...
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WO/2007/035978A1 |
An atmospheric leaching process in the recovery of nickel and cobalt from a lateritic ore, said lateritic ore including a low magnesium ore fraction and a high magnesium ore fraction, said process including the steps of: (a) forming an a...
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WO/2007/016737A1 |
A hydrometallurgical method (10) for the extraction of nickel and cobalt from laterite ores, the method characterised by the method steps of: (i) Beneficiating (14, 16) a run of mine laterite ore containing nickel and cobalt into a subst...
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WO/2006/119559A1 |
A process for the recovery of nickel and cobalt from a nickeliferous oxidic ore by heap leaching, the process including the steps of: a) forming the nickeliferous oxidic ore into one or more heaps; b) leaching the ore heap with a leach s...
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WO/2006/113944A1 |
Nickel is recovered from a nickel-cobalt mixture by dissolving the mixture in a chloride solution which originates from at least two different chloride sources, to form an anionic cobalt chloride complex which is separated from the solut...
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WO/2006/089358A1 |
A process for producing a ferronickel product from a mixed nickel iron hydroxide product, said process including the steps of : a) providing a mixed nickel iron hydroxide product; b) pelletising the mixed nickel iron hydroxide product to...
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WO/2006/084335A1 |
A process for the recovery of nickel and cobalt from a nickeliferous laterite ore including the steps of : a) providing a nickeliferous laterite ore and separating that ore into its low magnesium limonite fraction and high magnesium sapr...
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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/2006/053418A1 |
A method of producing a fine, low bulk density nickel powder, comprising a) charging particles of at least one reducible nickel salt within a furnace so as to form a moving bed of furnace charge, and b) reducing the furnace charge with a...
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WO/2006/053376A1 |
A process for the recovery of nickel and cobalt from nickel and cobalt containing ores, including the steps of first leaching a laterite ore and/or a partially oxidised sulfide ore with an acid solution to produce a pregnant leach soluti...
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WO/2006/037120A2 |
Methods and apparatuses for separating metal values, such as nickel and nickel compounds, from mineral ores, including lateritic ores are disclosed. The method includes providing a mixture of particles (312) (e.g., crushed and sized ore)...
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WO/2006/032097A1 |
A process for separating one or more metal ions forming a first group of metal ions such as copper, zinc and ferric ions, from one or more other metal ions forming a second group of metal ions such as cobalt and nickel, comprising: conta...
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WO/2006/029439A1 |
A process for enriching an organic extractant with nickel ions and further extracting nickel ions and other metal ions from aqueous solutions. In particular, the process includes the steps: a) mixing a water-immiscible organic extractant...
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WO/2006/029499A1 |
A process for leaching laterite ores containing limonite and saprolite. Sufficient mineral acid is added to a slurry of limonite which is leached at atmospheric pressure to dissolve most of the soluble non-ferrous metals and soluble iron...
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WO/2006/029443A1 |
A process for the production of ferro-nickel or nickel matte from a product liquor solution containing at least nickel, cobalt, iron and acid soluble impurities, said process including the steps of: a) contacting the product liquor solut...
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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/2006/000098A1 |
A process for leaching laterite ores containing limonite and saprolite in a two stage process. The first stage consisting of mixing and reacting the ore with concentrated mineral acid, and the second stage consisting of preparing a slurr...
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WO/2006/000020A1 |
A method for the leaching of base metals from oxide ores, the method characterised by the method steps of: a) Separating the ore to be leached into fine and coarse fractions or streams; b) Leaching the coarse fraction of the ore in a lea...
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WO/2005/124921A1 |
A method of recovering valuable materials from lithium batteries wherein a lithium/transition metal composite oxide is used as a positive electrode active material. In this disposal method, a sheeted positive electrode having a positive ...
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WO/2005/121675A1 |
[PROBLEMS] A rotary heat exchanger increasing the degree of contact of the entire raw material with heat gas, enabling to achieve a high exchange rate of heat with the gas even the raw material has a high percentage of water content. [ME...
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WO/2005/116279A1 |
In a solvent extraction step, the nickel and cobalt contained in a neutralized liquid 113 are separated into a nickel sulfate solution 130 and a cobalt sulfate solution 132 with an organic solvent 134 as an extractant. These solutions ar...
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WO/2005/116281A1 |
A method of recovering nickel or cobalt which comprises: a step in which a first oxide ore (oxide ore (102a)) and a second oxide ore (oxide ore (102b)) having a higher magnesium content than the first oxide ore are prepared as oxide ores...
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WO/2005/113845A1 |
A process for recovering nickel from a solid feed material containing nickel in the form of millerite is disclosed. The process includes treating a slurry of the solid feed material and a process solution so that all or at least part of ...
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WO/2005/102569A1 |
Active nickel powder is produced by reducing a feed material, containing one or more reducible nickel salts, such that when nickel chloride is present, the weight ratio of chloride to total nickel is greater than 0.1 and the reducible ni...
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WO/2005/100622A1 |
Process for recovering catalytic coating material from catalytic converters, catalytic material or catalytic assemblies where the catalytic coating material is bonded to a metal supporting structure, the process being carried out by cont...
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WO/2005/099934A2 |
On production of Ni-Mn-Ga single crystals, the fusion of the pure metal in arc furnaces is known, whereupon significant amounts of manganese are lost due to the high partial pressure thereof. The solidified metal is then fused and crysta...
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WO/2005/098060A1 |
In a step b (a leaching step), a slurried ore (104) is leached with sulfuric acid (105), to form a sulfuric acid leached solution (108) containing nickel and cobalt and a leaching residue (109). The leaching residue (109) contains natroj...
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WO/2005/098061A1 |
In a step b (a leaching step), sulfuric acid (205) and a reducing agent (220) is added to a slurried ore (204), to thereby reduce a trivalent cobalt oxide, leach with the sulfuric acid (205) and produce a solution (208) leached with sulf...
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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/2005/073415A1 |
A process for the separation of cobalt and/or manganese from impurity elements selected from one or more of calcium and magnesium contained in a leach solution, the process comprising the step of subjecting the leach solution to solvent ...
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WO/2005/073416A1 |
A process for the separation of nickel, cobalt or both from impurity elements selected from one or more of calcium, magnesium, manganese and chloride contained in a leach solution, the process comprising the step of subjecting the leach ...
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WO/2005/071126A1 |
The invention relates to a method for producing iron-nickel alloys from oxide materials and to a device for carrying out said method. The inventive method consists in pre-reducing oxide materials containing at least 0.4-0.7 % of nickel b...
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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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