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WO/2007/103083 |
In a method of extracting lithium from a lithium bearing mineral, the mineral is reacted with a basic material of sufficient strength to dissolve the mineral, in order to produce a product mixture containing lithium. The lithium is then ...
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WO/2007/103083 |
In a method of extracting lithium from a lithium bearing mineral, the mineral is reacted with a basic material of sufficient strength to dissolve the mineral, in order to produce a product mixture containing lithium. The lithium is then ...
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WO/2007/099536 |
An efficient process for purification of palladium from a palladium and rhodium mixture is described, which is based on the difference in uptake of the two metals into a strong anion exchanger polymer, e.g., a copolymer of polystyrene an...
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WO/2007/099536 |
An efficient process for purification of palladium from a palladium and rhodium mixture is described, which is based on the difference in uptake of the two metals into a strong anion exchanger polymer, e.g., a copolymer of polystyrene an...
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WO/2007/098603 |
A process for extracting gold from a gold-bearing ore. The process includes, first, providing a leaching liquor with thiosulfate anion and ethylenediamine. Next, the leaching liquor is contacted with the gold-bearing ore to form a pregna...
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WO/2007/099119 |
The present invention relates to a process for the acid digestion of metal-containing compounds by leaching by means of an aqueous leachant, wherein the aqueous leachant i) contains an alkanesulphonic acid and, if appropriate, sulphuric ...
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WO/2007/100847 |
The present invention provides a method for improving the recovery of cesium-131 (Cs-131) from neutron-irradiated barium (Ba) carbonate. The recovery process includes dissolution, precipitation and separation steps, wherein the separated...
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WO/2007/100847 |
The present invention provides a method for improving the recovery of cesium-131 (Cs-131) from neutron-irradiated barium (Ba) carbonate. The recovery process includes dissolution, precipitation and separation steps, wherein the separated...
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WO/2007/098613 |
A recovery process for at least one precious metal contained in an ore, includes: comminuting the ore to obtain particles smaller than a predetermined particle size; separating the particles into at least two groups, each group being cha...
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WO/2007/095689 |
A hydrometallurgical method (10) for precipitating iron as hematite at elevated temperature and pressure from a pregnant leach solution ("PLS") (12) containing nickel, cobalt and iron, the method comprising the steps of: (i) leaching a l...
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WO/2007/093666 |
The invention relates to a method for recovering gold in connection with the hydrometallurgical production of copper from a waste or intermediate product containing sulphur and iron that is generated in the leaching of the copper raw mat...
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WO/2007/092994 |
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/2007/093667 |
The invention relates to a method whereby copper is recovered from a copper sulphide ore containing pyrite. According to the method the ore is ground and leached into a solution containing sulphuric acid in atmospheric conditions by mean...
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WO/2007/090725 |
The present invention relates to solutions comprising water and at least one metal cyanide, with at least part of the water being obtained from wastewater which arises as depleted wastewater in a process for the winning of noble metals f...
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WO/2007/087698 |
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/2007/088010 |
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/2007/087675 |
A process for the recovery of base metals from an oxide ore, comprising the steps of: e) forming at least one heap (40) of the oxide ore containing the base metals to be recovered; f) irrigating the at least one heap (40) of oxide ore wi...
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WO/2007/085039 |
A method for the biodegradation of organic compounds in a Bayer circuit, the method including the steps of: treating a portion of the Bayer circuit to provide a pH of between about 8 and about 12 wherein the portion of the Bayer circuit ...
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WO/2007/079531 |
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/2007/079532 |
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/2007/080963 |
A method for separation and recovery of noble metals which makes it possible to isolate noble metal components efficiently by easy operation, that is, a method which comprises passing a solution of metals in hydrochloric acid prepared by...
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WO/2007/077290 |
The invention relates to a method for improving the leaching of a sulphidic concentrate that contains valuable metals in a hydrometallurgical fabrication process of said valuable metal. The purpose is to accelerate the oxidation of sulph...
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WO/2007/074360 |
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/2007/074360 |
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/2007/074129 |
The invention relates to a method for recovering ruthenium from a used ruthenium-containing catalyst which contains ruthenium as ruthenium oxide on a carrier material that is difficult to dissolve in mineral acid. Said method comprises t...
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WO/2007/074207 |
Sulphidic zinc concentrate usually also includes small amounts of rare metals such as indium and gallium. If the content of these metals in the raw material is sufficiently high, their recovery may be economically worthwhile. In the meth...
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WO/2007/071028 |
There is provided compounds of formula (I): wherein R1, R2, R3, X1, X2, X3, can represent various substituents and m, n, p can be of various different values. These compounds can be useful for forming complexes. These compounds can in fa...
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WO/2007/071021 |
The present invention relates generally to processes for mineral extraction and ore processing and more specifically, to processes for recovering iron as hematite from a sulfide ore material and to processes for recovering base metals fr...
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WO/2007/070974 |
A process for recovering solid magnesium sulfate hydrate from a source of magnesium sulfate in solution said process including the steps of: (a) providing a source of magnesium sulfate in solution that is derived from part of a process a...
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WO/2007/070973 |
A process of recovering magnesium oxide from a source of magnesium sulfate, said process including the steps of: (a) providing a source of magnesium sulfate in solution that is derived from part of a process that is associated with the l...
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WO/2007/071020 |
The present invention relates generally to processes for mineral extraction and ore processing and more specifically, to processes for recovering iron as a hematite product of high purity from a base metal containing ore material and to ...
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WO/2007/065198 |
A cover (10) for a mineral processing tank (12), the cover (10) comprising a plurality of segments (14) made of lightweight material connected together in a generally circular configuration, so as to be able to float on, and cover substa...
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WO/2007/053947 |
Precious metal recovery by thiosulfate leaching where thiosulfate lixiviant is generated in situ employing elemental sulfur generated from partial oxidation of sulfidic precious metal-bearing feed and/or employing reactants from processi...
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WO/2007/053919 |
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/2007/052801 |
The invention relates to production of lutile, which has high added value as refining raw material for metallic titanium, white pigment, photocatalyst, or functional coating material, with remarkably reduced energy and resource consumpti...
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WO/2007/045154 |
An alumina digesting apparatus, comprises the following devices: high pressure diaphragm pumps, double-pipe preheaters, pulse buffers, autoclaves with heating tube bundles, autoclaves and flash evaporators. The devices are connected succ...
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WO/2007/045034 |
A method for the recovery of metal values from a metal value-bearing material containing arsenic and/or antimony and a source of sulphate ions such as sulphide ore or concentrate is disclosed. In one form the method comprises the steps o...
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WO/2007/043657 |
It is intended to provide a technique whereby an organic material contained in polluted water or polluted soil, which contains a heavy metal together with the organic material, is biologically decomposed. Namely, a method of decomposing ...
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WO/2007/042604 |
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/2007/042611 |
The invention relates to a method to precipitate metal oxide(s) from aqueous waste solutions, also comprising inorganic acids, metal salts and complexes in addition to one or more organic additive(s). The precipitation is effected by con...
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WO/2007/040817 |
A metal extractant comprising Formula (1) wherein R5, R6, R7 and R8 each independently are hydrogen, an optionally substituted hydrocarbyl group, an electron withdrawing group, an electron donating group, or one or more of R5&R6, R6&R7, ...
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WO/2007/035978 |
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/2007/034413 |
A process for the indirect bioleaching of zinc sulphide is disclosed, and includes leaching, solvent extraction, electrowinning, and oxidant regeneration steps in a closed circuit. The leaching step utilizes ferric iron as an oxidant, th...
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WO/2007/034413 |
A process for the indirect bioleaching of zinc sulphide is disclosed, and includes leaching, solvent extraction, electrowinning, and oxidant regeneration steps in a closed circuit. The leaching step utilizes ferric iron as an oxidant, th...
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WO/2007/032228 |
The invention aims at providing methods for recovering molybdenum in a state usable as the raw material in the production of catalysts from a molybdenum-containing substance and a process for producing catalysts by use of the recovered m...
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WO/2007/024211 |
A process for improving the recovery of gold from gold-bearing solutions formed from carbonaceous ore using a cyanide lixiviant, the process comprising treatment of tailings pond water with H2SO5 before introduction into a gold-recovery ...
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WO/2007/023002 |
The invention relates to a method for producing pure metal, metal mixtures and/or metal alloys, in particular for producing nanoparticles of pure metal, from a medium containing metal. Metal is produced and nanoparticles of said metal ar...
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WO/2007/022622 |
Method and apparatus for separating components of slurries by gravity settling thereby forming a thickened slurry and a clarified liquid The apparatus comprises a vessel for decanting a volume of slurry, a slurry mlet means, an outlet fo...
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WO/2007/019701 |
A method for processing ore using carbonates so as to minimize the production of acidic wastes. The method includes adding the carbonates to the ore and after the carbonates have been added to the ore, substantially jointly grinding the ...
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WO/2007/019707 |
A method for extraction a metal from a mineral ore including a refractory ore contained in a metal. The method includes concentration of refractory ore followed by micronization of the concentrate until gold is liberated by the extractio...
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