| Document |
Document Title |
|
WO/2001/096621A1 |
The present invention relates generally to a two step solvent extraction circuit to remove impurity metals of zinc and cobalt selectively from a valuable metal of nickel. In order to selectively extract zinc there must be sufficient sepa...
|
|
WO/2001/094652A1 |
The invention relates to a method for producing briquettes from nickel-oxide powder (NiO). Said method consists of mixing the nickel-oxide powder with cellulose fibres, starch and liquid and of subsequently compressing the mixture.
|
|
WO2001032944B1 |
A process is provided for the leaching of both the "limonite" (Fe approx. ≥ 25 % and Mg approx. ≤ 6 %) and "saprolite" (Fe approx. ≤ 20 % and Mg approx. ≥ 10 %) fractions of typical nickel and cobalt bearing laterite ore. The low...
|
|
WO/2001/075184A2 |
A process is provided for heap leaching ore to recover nickel. The process is particularly effective for ores that have a tangible clay component (i.e., greater than 10 % by weight). The process includes sizing the ore (where necessary),...
|
|
WO/2001/073144A2 |
An improved process for separating cobalt values from nickel values in an aqueous nickel and cobalt sulphate-containing solution in which the solution is contacted with a water-immiscible organic solution containing an organophosphorous ...
|
|
WO/2001/072456A1 |
The invention relates to a method for producing metal bodies by mixing metal compound particles with a binding agent and compacting them to form shaped parts, whereby the binding agent is subsequently removed and the metal compound is re...
|
|
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...
|
|
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...
|
|
WO/2001/055463A1 |
A process for producing purified cobalt from a mixture comprising metallic species of cobalt and metallic species of at least one of the group consisting of nickel and iron, comprising producing a metal carbonyl mixture of cobalt carbony...
|
|
WO/2001/048252A1 |
The present invention relates generally to a method of extracting cobalt and other impurity metals from a concentrated nickel sulphate solution by a solvent extraction process whereby a cationic solvent extractant is separately pre-equil...
|
|
WO/2001/046482A1 |
A method of producing an iron-nickel alloy, with a nickel content of from 5% to 20%, which includes the step of reducing the iron oxide content of a slag in a DC arc furnace to less than 10%.
|
|
WO/2001/034857A1 |
The invention relates to a method for the precipitation of nickel from an aqueous solution containing its sulphate as a metallic powder suitable as an alloying element for refined steel. In this method, nickel reduction takes place conti...
|
|
WO/2001/034859A1 |
The invention relates to a method for the precipitation of nickel from its aqueous solution as a metal powder using hydrogen. The aqueous solution containing nickel compounds is neutralised first with an earth alkali or alkali compound s...
|
|
WO/2001/032945A1 |
A process and apparatus for desulfurisation of nickel powder is disclosed in which the nickel powder is heated in a hydrogen-containing atmosphere to promote the formation of hydrogen sulfide gas. The hydrogen sulfide gas is then removed...
|
|
WO/2001/032943A2 |
A process is provided for leaching nickeliferous laterite ores by hydrometallurgical methods at temperatures below the boiling point of the pulp and at atmospheric pressure from which high overall nickel and cobalt extractions are obtain...
|
|
WO/2001/029276A1 |
A process is provided for the direct recovery of nickel and cobalt from a nickeliferous oxide ore leach slurry by ion exchange. A nickeliferous ore is leached with mineral acid to solubilize the metals. The resulting leach slurry is cont...
|
|
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...
|
|
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 ...
|
|
WO/2001/012288A1 |
A process for the recovery of nickel from a nickel containing orein which the ore, particularly a laterite ore, is initially leached with an aqueous acid solution, after which the nickel is precipitated as nickel hydroxide by adding a hy...
|
|
WO/2000/074856A1 |
The invention relates to a method for preparing nickel concentrate from pyrrhotitepentlandite ore. The method comprises grinding the ore to the maximum grain size at which the major portion of the sulphide minerals is worked off from the...
|
|
WO/2000/073520A1 |
A process for selectively extracting a value metal from a ferrous solid, the value metal being selected from the group consisting of cobalt, nickel and copper, and the ferrous solid being selected from mattes and alloys containing iron a...
|
|
WO/2000/070104A1 |
The present invention relates to a method, whereby the non-ferrous metal content of the slag generated in the production of non-ferrous metals such as copper or nickel in a suspension smelting furnace is reduced by charging metallurgical...
|
|
WO/2000/065114A1 |
The present invention is concerned with a method for the pre-reduction of laterite fines in a reactor, preferably a fluidized bed, with reducing gases generated $i(in situ) by adding a reducing agent such as a carbonaceous material in th...
|
|
WO/2000/056943A1 |
Disclosed herein is a process for selectively removing an iron constituent and a manganese constituent from a cobalt-bearing composition, in particular for removing iron and manganese impurities from cobalt-bearing leach solutions and el...
|
|
WO/2000/056942A1 |
A process for the recovery of one or more metal values from a metal containing feed material, the process including the steps of: (a) subjecting said feed material to a pyrometallurgical treatment in which the feed material is smelted to...
|
|
WO/2000/053820A1 |
A process is provided for the selective recovery from an impure solution of pure nickel and cobalt solutions, suitable for electrolysis of the respective metals. The impure solution may be that obtained from acid leaching of nickel/cobal...
|
|
WO/2000/053825A1 |
The present invention pertains to the field of metallurgy and essentially relates to methods for producing cathodic nickel from copper- and nickel-containing sulphide raw materials. The method involves separating the fine matte by flotat...
|
|
WO/2000/053819A1 |
The present invention pertains to the field of hydrometallurgy and essentially relates to methods for producing sulphate solutions that contain nickel and cobalt. The method involves processing the material using a solution of sulphuric ...
|
|
WO/2000/048944A1 |
Disclosed and claimed are efficient methods for leaching minerals from ores using an acidic solution such as sulfuric acid. Additional factors which can improve mineral recovery include the use of an alkali metal halide, grinding the ore...
|
|
WO/2000/039350A1 |
The invention relates to a method for extracting anions based on metals of the V group to the VII group of the periodic table from the aqueous solution thereof. To this end, compounds or general formula (I) are used as an extracting agen...
|
|
WO/2000/036167A1 |
A solvent extraction composition is provided which comprises one or more orthohydroxyarylaldoximes or orthohydroxyarylketoximes and one or more esters substituted with a hydroxyl group, and preferably a water immiscible organic solvent. ...
|
|
WO/2000/028093A1 |
The invention relates to recovering metals, such as nickel and cobalt, by phytomining or phytoextracting soils rich in metals wherein the desired metal is selectively accumulated in hyperaccumulator plants by adjusting the soil pH. The m...
|
|
WO/2000/026432A1 |
A closed loop, carbon monoxide self-contained preferably continuous process and apparatus for the production of nickel or nickel coated objects by nickel vapour deposition (NVD), comprising placing an object (34) to be treated with nicke...
|
|
WO/2000/025382A1 |
A method of recovering valuable metal from waste storage batteries includes the steps of physically classifying waste storage batteries to separate them into materials of positive and negative plates, and recovering valuable metal from t...
|
|
WO/2000/009782A1 |
Invention relates to a method for the removal of sulfur from the leaching cycle of nickel processes such as leaching of nickel matte. According to the method, anolyte generated in nickel electrowinning is neutralized with the aid of a ca...
|
|
WO/2000/006328A1 |
A process for manufacturing of metal powder from a halogen containing chemical compound of the metal. The process involves thermal treatment of the compound (A) within a closed reactor and in a non-oxidizing atmosphere so as to induce de...
|
|
WO/1999/063121A1 |
The invention relates to a method for recovering non-ferrous metals, particularly nickel, cobalt, copper, zinc, manganese and magnesium, from materials containing said metals by converting said non-ferrous metals into sulphates by means ...
|
|
WO/1999/047715A1 |
The invention relates to a method for transforming slag derived from non-iron metallurgy, especially of primary and secondary Ni and Cu foamed slags while recovering and/or enriching the non-iron metals and constructing synthetic puzzola...
|
|
WO/1999/010546A1 |
A process for the solvent extraction of metals, particularly copper, from aqueous ammoniacal solutions is provided. The extractant is an orthohydroxyarylketoxime of Formula (1), wherein R?1¿ is a hydrocarbyl group, and R?2¿ is an ortho...
|
|
WO/1999/009226A1 |
A process for the extraction of metal from an ore or concentrate which contains nickel and/or cobalt values and other metals, comprises subjecting the ore or concentrate to acid leaching under pressure at pH $m(F) 2 to obtain a liquor co...
|
|
WO/1999/009225A1 |
A process for the extraction of copper from a sulphide ore or concentrate comprises the steps of subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic solution containing halide and sulphate ions...
|
|
WO/1999/006603A1 |
A method for precipitating nickel and cobalt from an acid aqueous solution containing at least dissolved nickel, cobalt and manganese, the method including: adding solid caustic calcined magnesium oxide or freshly slurried caustic calcin...
|
|
WO/1998/059080A1 |
Nickel/cobalt, as well as platinum and palladium metal family members are recovered from soil by growing $i(Brassicaceae) plants, specifically $i(Alyssum) in soil containing nickel/cobalt as well as other metals. The soil is conditioned ...
|
|
WO/1998/038934A1 |
This invention is a cryoplasty catheter and method for preventing or slowing re-closure of a lesion following angioplasty. The cryoplasty catheter (10) includes a shaft (12) having proximal and distal ends and a dilatation balloon (14) d...
|
|
WO/1998/037247A1 |
The present is a hydrometallurgical process for nickel and cobalt recovery, which involves leaching with ammonia-ammonium carbonate solution of the nickel and cobalt bearing mineral material, using a tubular reactor (4) with air or oxyge...
|
|
WO/1998/026100A1 |
A bioleaching method is provided for recovering a nickel from an ore selected from the group consisting nickel-containing lateritic ores and nickel-containing sulfidic ores or concentrates thereof. Where the ore selected is a nickel-cont...
|
|
WO/1998/022216A1 |
Cobalt and/or manganese is recovered from the ash obtained following incineration of the catalyst containing residue arising from the liquid phase oxidation of an aromatic carboxylic acid such as terephthalic acid. Recovery is effected b...
|
|
WO/1998/014741A1 |
The invention relates to a method for adjusting the flow velocity of reaction gas and the dispersion air of pulverous solids when feeding reaction gas and finely divided solids to the reaction shaft (6) of a suspension smelting furnace f...
|
|
WO/1998/008991A1 |
The recovery of nickel, cobalt and other metals by phytomining is described. Plants of the $i(Alyssum) genus are grown in nickel rich soil. The uptake of nickel is enhanced by maintaining specific soil conditions, including a concentrati...
|
|
WO/1997/043023A1 |
A process for the recovery of nickel from a nickel containing ore in which the ore, particularly a laterite ore, is initially leached with an aqueous acid solution, after which the nickel is precipitated as nickel hydroxide by adding a h...
|
