Processing hard rock lithium minerals or other materials to produce lithium materials and byproducts converted from a sodium sulfate intermediate product
US-2024425381-A1 · Dec 26, 2024 · US
Metal recovery method and dialysis device
US8992665B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8992665-B2 |
| Application number | US-201013574253-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 19, 2010 |
| Priority date | Feb 23, 2010 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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Provided is a valuable-metal recovery method for recovering metals from lithium ion batteries using comparatively simple equipment and without using a cumbersome process. In said method, a positive electrode material from lithium ion batteries, containing lithium and a transition metal, is dissolved in an acidic solution, thereby generating lithium ions and ions of the transition metal in the acidic solution. Said acidic solution and a recovery liquid are then made to flow with an anion-permeable membrane interposed therebetween, causing the lithium ions to permeate from the acidic solution to recovery solution. Lithium ions are then recovered from the recovery liquid containing dissolved lithium ions.
First claim
Opening claim text (preview).
The invention claimed is: 1. A metal recovery method for recovering metals from a positive electrode material for lithium ion batteries containing lithium and a transition metal element, the method comprising: an acid leaching step of dissolving the positive electrode material in an acid solution to generate lithium ions and transition metal ions in the acid solution; a dialysis step of flowing the acid solution containing the lithium ions and the transition metal ions and a rec…
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Cross-Sectional Technologies · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US8992665B2 cover?
- Provided is a valuable-metal recovery method for recovering metals from lithium ion batteries using comparatively simple equipment and without using a cumbersome process. In said method, a positive electrode material from lithium ion batteries, containing lithium and a transition metal, is dissolved in an acidic solution, thereby generating lithium ions and ions of the transition metal in the a…
- Who is the assignee on this patent?
- Yamaguchi Yoshihide, Hasebe Takehiko, Yamada Yasuko, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C22B26/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).