Title:
金属の相互分離
Document Type and Number:
Japanese Patent JP6568118
Kind Code:
B2
Abstract:
The invention relates to processes for separating metals, and in particular for separating precious metals such as platinum and palladium, by solvent extraction. The invention also provides novel solvent extraction mixtures useful in the processes of the invention. The 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 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.
Inventors:
Gordon, Ross John
Grant, Richard
Grant, Richard
Application Number:
JP2016574046A
Publication Date:
August 28, 2019
Filing Date:
June 16, 2015
Export Citation:
Assignee:
JOHNSON MATTHEY PUBLIC LIMITED COMPANY
International Classes:
C22B11/00; B01D11/04; C22B3/26; C22B3/34; C22B3/38; C22B3/40
Domestic Patent References:
| JP2004183093A | ||||
| JP2010077510A | ||||
| JP2013500486A | ||||
| JP59136435A |
Foreign References:
| WO2009001897A1 | ||||
| US20100095807 | ||||
| WO2005083131A1 | ||||
| US20070172404 | ||||
| US20100180730 | ||||
| US20120160061 | ||||
| US4623522 |
Attorney, Agent or Firm:
Sonoda/Kobayashi Patent Business Corporation