| VALE INCO LIMITED Patent applications |
| Patent application number | Title | Published |
|---|
| 20090297709 | CARBON ENCAPSULATED METAL PARTICLES AND METHOD OF MANUFACTURING THE SAME - A method of manufacturing commercial grade, carbon-coated or core-shell type metal powders with highly thermostable characteristics utilizes high-temperature carbonyl decomposition in the presence of carbon monoxide under normal atmospheric conditions. | 12-03-2009 |
| 20090249921 | PROCESS FOR PRODUCTION OF NICKEL AND COBALT USING METAL HYDROXIDE, METAL OXIDE AND/OR METAL CARBONATE - A method for producing metal oxide from a metal salt selected from nickel hydroxide, cobalt hydroxide, mixed nickel-cobalt hydroxide, nickel carbonate, cobalt carbonate, mixed nickel-cobalt carbonate and combinations thereof includes providing a mixture of the metal salt, mixing the metal salt with a binder selected from the group consisting of inorganic binder, organic binder and combinations thereof, forming the mixture into agglomerates, and calcining the agglomerates to produce metal oxide. A method for making metallic nickel or cobalt includes providing a metal salt selected from the group consisting of nickel hydroxide, cobalt hydroxide, mixed nickel-cobalt hydroxide, nickel carbonate, cobalt carbonate and combinations thereof, mixing the metal salt with a binder selected from the group consisting of inorganic binder, organic binder and combinations thereof to form a mixture, optionally adding water, forming the mixture into agglomerates, drying the agglomerates, adding an effective reducing amount of coke and/or coal and directly reducing the dried agglomerates with an effective amount of heat to produce metallic nickel and/or cobalt. Coke particles may be added to the mixture prior to agglomeration. An agglomerate includes a metal salt selected from the group consisting of nickel hydroxide, cobalt hydroxide, mixed nickel-cobalt hydroxide, nickel carbonate, cobalt carbonate, mixed nickel-cobalt carbonate and combinations thereof; and a binder selected from the group consisting of inorganic binder, organic binder and combinations thereof. | 10-08-2009 |
| 20090241731 | SYSTEM AND METHOD FOR EXTRACTING BASE METAL VALUES FROM OXIDE ORES - A method for recovering base metal values from oxide ore is provided by the present disclosure. The ore includes a first metal selected from the group consisting at least one of iron and aluminum and a second metal selected from the group consisting of at least one of nickel, cobalt and copper. The method includes the steps of: contacting the oxide ore with hydrogen chloride gas to obtain chlorides of the first and second metals and subjecting at least the first and second metals to pyrohydrolysis at a predetermined temperature to decompose the chlorides of the first metal into oxides. The method also includes the step of mixing the oxides of the first metal and the chlorides of the second metal in an aqueous solution to dissolve the chlorides of the second metal and recovering the dissolved ions of the second metal from the aqueous solution. | 10-01-2009 |
| 20090208405 | PROCESS FOR MANUFACTURING PREFLUXED METAL OXIDE FROM METAL HYDROXIDE AND METAL CARBONATE PRECURSORS - A method for producing prefluxed metal oxide from a metal salt selected from nickel hydroxide, cobalt hydroxide, mixed nickel-cobalt hydroxide, nickel carbonate, cobalt carbonate, mixed nickel-cobalt carbonate and combinations thereof includes providing a mixture of at least one slag making oxide and a metal salt selected from the group consisting of nickel hydroxide, cobalt hydroxide, mixed nickel-cobalt hydroxide, nickel carbonate, cobalt carbonate, mixed nickel-cobalt carbonate and combinations thereof, blending with a binder, blending in a flux additive to form a slag-making mixture, forming the slag-making mixture into prefluxed agglomerates, and calcining the prefluxed agglomerates to produce a prefluxed metal oxide. An agglomerate is provided which includes a metal salt selected from nickel hydroxide, cobalt hydroxide, mixed nickel-cobalt hydroxide, nickel carbonate, cobalt carbonate, mixed nickel-cobalt carbonate and combinations thereof, a slag making oxide, and a flux additive. An agglomerate is provide which includes a metal oxide selected from nickel oxide and cobalt oxide, and slag, wherein the metal oxide is encapsulated in the slag. | 08-20-2009 |
| 20090194747 | METHOD FOR IMPROVING ENVIRONMENTAL STABILITY OF CATHODE MATERIALS FOR LITHIUM BATTERIES - A method for improving the environmental stability of cathode materials used in lithium-based batteries. Most currently used cathode active materials are acutely sensitive to environmental conditions, e.g. leading to moisture and CO | 08-06-2009 |
| 20090180945 | LIQUID AND SOLID EFFLUENT TREATMENT PROCESS - A process for recovering metals such as Ni, Co, Mn, Cu, Zn, among others, through precipitation as sulphides, enabling recovery of magnesium in the form of hydroxide, carbonate and oxide and providing recovery of sulphate as gypsum and ammonium sulphate. Liquid phase, after full treatment, comprises recovered water with a quality proper for total reuse in industrial process. | 07-16-2009 |
| 20090087361 | PRODUCING NICKEL HYDROXIDE SUITABLE FOR PELLETIZATION WITH IRON-CONTAINING ORE AND FOR STAINLESS STEEL MANUFACTURE - A process for producing a purified nickel hydroxide precipitate from a nickel-containing leach solution with impurities including one or more of the following: manganese, copper, zinc, iron and/or cobalt, so that the purified nickel hydroxide is suitable for pelletization with iron-containing ores and/or stainless steel production, includes treating the leach solution with a base to form a slurry of mixed hydroxide precipitate and low-nickel barren solution, thickening the slurry to form filter cake, washing the filter cake and contacting it with acid to dissolve nickel and other metals to produce a concentrated nickel-containing solution, subjecting the concentrated nickel-containing solution to solvent extraction with an organic acid extractant to remove metals other than nickel from the nickel-containing solution and form a solvent extraction raffinate of purified nickel solution and treating the solvent extraction raffinate with a base to precipitate the purified nickel hydroxide precipitate. | 04-02-2009 |
| 20090056502 | HYDROMETALLURGICAL PROCESS FOR RECOVERY OF NICKEL AND COBALT - The present invention is related to a hydrometallurgical process to produce nickel as hydroxide, oxide or cathode and produce cobalt preferably as sulfides. The present invention is particularly adequate to process eluate containing nickel and cobalt. Eluates are solutions obtained from elution of ionic exchange resins, loaded (charged) in the RIP (resin-in-pulp) process of ionic exchange, to recover nickel and cobalt from effluent pulps in acid leaching. Following nickel and cobalt recovery in a RIP circuit, they are separated from each other via a continuous ionic exchange process, after which the nickel eluate is formed to produce nickel as nickel oxide by a pyrohydrolysis process. | 03-05-2009 |
| 20090056501 | HYDROMETALLURGICAL PROCESS USING RESIN-NEUTRALIZED-SOLUTION OF A HEAP LEACHING EFFLUENT - The present invention refers to a hydro-metallurgical process using resin-in-neutralized-solution in heap leaching effluent. More specifically, the process is applicable to lateritic ore, nickel oxidate, cobalt oxidate or a mixture containing metals of interest—nickel, cobalt and other secondary metals, wherein ore is leached by adding an acid or a base with possible pH adjustment, aided by acid or base with neutralization of heap leaching effluent, by adding lime, limestone, soda or ammonia in the temperature of 70° to 95° C. range, at pH in the pH4 to pH5 range; wherein soluble impurity species can be reduced or cementing/complexation techniques, comprising a neutralized leaching effluent, as slurry, made up of solid particles (precipitated compounds) and solution, but ore-free; which is fed into the RINS (resin-in-neutralized-solution) circuit, with no need for solid-liquid separation; wherein the resin-in-neutralized-solution circuit comprises multiple sequential vats stirred in countercurrent flow and wherein the loaded resin is separated from the slurry by screening. | 03-05-2009 |
| 20090056500 | RESIN-IN-LEACH PROCESS TO RECOVER NICKEL AND/OR COBALT IN ORE LEACHING PULPS - A hydrometallurgical resin-in-leach (RIL) process for directly recovering nickel and/or cobalt. Simultaneous pulp leaching by adding an acid or base, dissolves the metals of interest with adsorption of the metals rendered soluble in on ionic exchange resin. Following elution of the changed resin, purification of nickel and cobalt present in the eluate can be recovered by conventional methods, such as precipitation, extraction by solvents and membranes. The regenerated resin is recirculated for further use. | 03-05-2009 |
| 20080209872 | Filtering device for diesel engine exhaust gas - A filtering device for diesel engines is based on metal foams. In order to achieve high filtration efficiency with low pressure drop using deep bed filtration metal foams, a radial flow concept is used based on a “porosity gradient”. The foams can also be coated with catalytically active material to enhance soot oxidation (regeneration), as well as reduction of other exhaust gas pollutants (CO, hydrocarbons, nitrogen oxides). This may be accomplished by using non-uniform amounts of catalytic materials within the filter depending on the targeted application. An additional secondary filter segment may be placed within the metal support of the main filter segment. The metallic diaphragms at the entrance and exit of the external shell are designed in such a way as to allow the flow to be divided between the main and the secondary filter segments according to the respective flow resistances. | 09-04-2008 |
