Systems and methods for cobalt recovery
a recovery system and metal recovery technology, applied in the field of systems and methods for recovering metal values, can solve the problems of large volume of aqueous solution, difficult filtering of cobalt containing materials precipitated with magnesium oxide (mgo) and subsequently leached,
Inactive Publication Date: 2014-09-18
FREEPORT MCMORAN COPPER & GOLD INC
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Benefits of technology
This patent is about a method for recovering metal values like cobalt. The method involves producing a material with cobalt hydroxide, leaching it to make a slurry, filtering the slurry to get rid of the cobalt, and then using a solution extraction process to get a purified cobalt solution. This solution is then conditioned and electrownnied to get cobalt metal. The invention provides a way to recover cobalt from waste materials and make it useful for various applications.
Problems solved by technology
In conventional processes, cobalt containing materials precipitated with magnesium oxide (MgO) and subsequently leached tend to be difficult to filter.
In addition, large volumes of aqueous solution are typically employed.
Method used
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[0014]The following description is merely exemplary in nature and is not intended to limit the present invention, its applications, or its uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features. The description of specific examples indicated in various embodiments of the present invention are intended for purposes of illustration only and are not intended to limit the scope of the invention disclosed herein. Moreover, recitation of multiple embodiments having stated features is not intended to exclude other embodiments having additional features or other embodiments incorporating different combinations of the stated features.
[0015]Furthermore, the detailed description of various embodiments herein makes reference to the accompanying drawing figures, which show various embodiments by way of illustration. While the embodiments are described in sufficient detail to enable those skilled in the art to...
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Abstract
Various embodiments provide a method comprising producing a cobalt hydroxide bearing material, leaching the cobalt hydroxide hearing material to form a slurry, filtering the slurry to yield solids and a cobalt bearing liquid phase, performing a solution extraction of the cobalt bearing liquid phase to yield a purified cobalt bearing liquid phase, conditioning a first portion of the purified cobalt bearing liquid phase to yield a conditioned cobalt bearing solution and, electrowinning the conditioned cobalt bearing solution to yield cobalt metal.
Description
FIELD OF INVENTION[0001]The present invention relates, generally, to systems and methods for recovering metal values from metal-bearing materials, and more specifically, to systems and methods for recovering cobalt and other metal values.BACKGROUND OF THE INVENTION[0002]Cobalt is an industrially important element that may be used in various catalysts, dyes, alloys, inks, battery additives, and other industrially beneficial products. Cobalt may be found in nature in a variety of forms and in a variety of ores. Cobalt containing ores include cobaltite, heterogenite (CoOOH), erythrite, glaucodot, and skutterudite. As found in nature, cobalt often exists in an oxidation state other than zero. For example, cobalt is often found in the form of cobalt II and cobalt III. Cobalt metal is commercially saleable, though purified forms of cobalt II and / or cobalt III, such as those in a salt form, are also commercially saleable.[0003]In conventional processes, cobalt containing materials precipit...
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IPC IPC(8): C25C1/08
CPCC25C1/08C25C7/00
Inventor GOEL, NITINPARTANEN, ARI GABRIELHAZEN, WAYNE W.ROOKE, PHIL
Owner FREEPORT MCMORAN COPPER & GOLD INC