Patent 2015275875

Interseparation of metals

Abstract

The present invention relates to processes for separating metals, and in particular for separating precious metals such as platinum and palladium, by solvent extraction. The present invention also provides novel solvent extraction mixtures useful in the processes of the present invention. The present inventors have found that by simultaneously employing different extraction mechanisms for the extraction of a plurality of different metals, a simple and convenient process for their separation can be achieved. In particular, the present inventors have found that the use of different extraction mechanisms for simultaneously extracting metals from an aqueous acidic phase into an organic phase enables the extracted metals to be separated by selective stripping from the organic phase using simple and mild conditions. This process is particularly advantageous as it permits two or more metals to be separated following a single solvent extraction step, because of the ability to selectively strip the metals from the organic phase.

Information

Australian application number
2015275875
Country
GB
Status
Filed
Type
Standard
Applicant
Anglo American Platinum Limited, LTD (ZA)
Application year
2016

International Patent Classification (IPC) codes