Method for separating platinum group element
US7479262B2 · kind B2 · utility
1Cited by
11References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2003 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Jul 19, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
One object of the present invention is to provide a separation process that enables the efficient separation of selenium, tellurium, and platinum group elements from a material containing selenium/tellurium and platinum group elements. In order to achieve this object, the invention provides a separation process for platinum group elements comprising: a step (A) for treating a material containing selenium/tellurium and platinum group elements with alkali, a step (B) for leaching selenium/tellurium, and a step (C) for separating the platinum group element-containing leaching residue and the selenium/tellurium leachate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.