Method for separating copper from nickel and cobalt
US11959151B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Aug 21, 2018 |
| Grant date | Apr 16, 2024 |
| Priority date | — |
| Expiry date | May 18, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/84
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Provided is a method for separating copper from nickel and cobalt, which is capable of efficiently and selectively separating copper, and nickel and cobalt from an alloy containing copper, nickel and cobalt such as a highly anticorrosive alloy that is obtained by subjecting a waste lithium ion battery to a dry treatment and contains copper, nickel and cobalt. According to the present invention, an alloy containing copper, nickel and cobalt is brought into contact with an acid in the coexistence of a sulfurization agent, thereby obtaining a solid that contains copper and a leachate that contains nickel and cobalt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.