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System and Method for Recovery of Nickel Values From Nickel-Containing Ores

a nickel-containing ores and nickel-based technology, applied in the field of systems and methods for recovering nickel values, can solve the problems of many existing methods and implementation difficulties

Inactive Publication Date: 2012-08-16
SCANDIUM INT MINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

The patent text describes methods for extracting nickel values from nickel-containing ores. The methods involve treating the ore with acid, baking it to produce gaseous effluents, and recycling them to reconstitute the acid. These methods can also be used to extract both nickel and scandium values from ores that contain both these metals. The technical effects of the patent text are improved methods for extracting valuable nickel and scandium values from ores, which can provide a more efficient and cost-effective means of production.

Problems solved by technology

However, many of the existing methods must be implemented on feedstocks derived from ores that have already undergone some processing.

Method used

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  • System and Method for Recovery of Nickel Values From Nickel-Containing Ores

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Embodiment Construction

[0015]While the methods currently known to the art for recovering nickel values from ore feedstocks may be useful in certain applications, a need exists in the art for further improvements in these methods. In particular, it is found that some of these methods leave significant concentrations of nickel in the treated ore, especially when the ore being treated is a nickel laterite. Other methods, such as the Mond process, require the ore to undergo preliminary processing, and hence are not suitable for application to raw ore feedstocks. Still other methods are limited in that they do not provide for the efficient co-extraction of nickel with other metal values, such as scandium and cobalt; since these values frequently occur in commercially significant levels in many nickel laterite ores, the use of such methods diminishes the return on investment of the mining operation.

[0016]Finally, some of the processes currently utilized in the art for the extraction of metal values from nickeli...

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Abstract

A method is provided for extracting nickel values from nickel-containing ores. The method comprises (a) treating a nickel-containing ore with an acid, thereby producing an acid treated ore; (b) baking the acid treated ore, thereby producing a baked ore; (c) leaching nickel from the baked ore to form a leachate; and (d) extracting nickel values from the leachate through the use of an ion exchange resin.

Description

REFERENCE TO RELATED APPLICATIONS[0001]The present application is a continuation-in-part of U.S. Ser. No. 13 / 025,393 (Duyvesteyn), entitled “System and Method for Recovery of Scandium Values From Scandium-Containing Ores”, which was filed on Feb. 11, 2011, and which is incorporated herein by reference in its entirety.FIELD OF THE DISCLOSURE[0002]The present disclosure relates generally to systems and methods for producing nickel, and more particularly to systems and methods for recovering nickel values, alone or in combination with cobalt and scandium values, from laterite ore feedstocks.BACKGROUND OF THE DISCLOSURE[0003]Nickel is a silvery-white metal which is produced primarily from laterite deposits and magmatic sulfide deposits. In laterites, the primary ore minerals are nickeliferous limonite and saprolite or garnierite. Limonite has the general composition (Fe, Ni)O(OH), while saprolite is a hydrous nickel silicate. Garnierite, which has the general composition (Ni, Mg)3Si2O5(...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C22B23/00C25C1/08
CPCC22B3/0005C22B23/005C25C1/08C22B23/0453C22B23/0415Y02P10/20C22B3/26
Inventor DUYVESTEYN, WILLEM P. C.
Owner SCANDIUM INT MINING
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