Processing hard rock lithium minerals or other materials to produce lithium materials and byproducts converted from a sodium sulfate intermediate product
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Method for dissolving lithium compound, method for manufacturing lithium carbonate, and method for recovering lithium from lithium ion secondary cell scrap
US2023279522A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023279522-A1 |
| Application number | US-202318315623-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 11, 2023 |
| Priority date | Aug 2, 2017 |
| Publication date | Sep 7, 2023 |
| Grant date | — |
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Abstract
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A method for dissolving a lithium compound according to the present invention includes bringing a lithium compound into contact with water or an acidic solution, and feeding, separately from the lithium compound, a carbonate ion to the water or the acidic solution to produce carbonic acid, and allowing the carbonic acid to react with the lithium compound to produce lithium hydrogen carbonate.
First claim
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What is claimed is: 1 . A method for dissolving a lithium compound, the method, comprising bringing a lithium compound into contact with water or an acidic solution, and feeding, separately from the lithium compound, a carbonate ion to the water or the acidic solution to obtain a lithium dissolved solution, wherein the lithium compound contains cobalt and aluminum, wherein a pH of the lithium dissolved solution is from 7 to 10, and wherein the lithium compound comprises at least one selected from the group consisting of lithium hydroxide, lithium oxide and lithium carbonate. 2 . The method for dissolving the lithium compound according to claim 1 , wherein the carbonate ion is fed so as to maintain a saturated state of carbonic acid in the water or the acidic solution. 3 . The method for dissolving the lithium compound according to claim 1 , wherein the feeding of the carbonate ion is carried out by blowing a carbon dioxide gas into the water or the acidic solution. 4 . The method for dissolving the lithium compound according to claim 1 further comprising separating lithium from the lithium dissolved solution, and precipitating a lithium ion in the lithium dissolved solution as lithium carbonate. 5 . The method for dissolving the lithium compound according to claim 4 , wherein when the lithium ion is precipitated, the lithium dissolved solution is heated to separate carbonic acid as a carbon dioxide gas from the lithium dissolved solution. 6 . The method for dissolving the lithium compound according to claim 5 , wherein when the lithium ion is precipitated, the lithium dissolved solution is heated at a temperature of from 50° C. to 90° C. 7 . The method for dissolving the lithium compound according to claim 1 , wherein when the lithium compound is brought into contact with the water or the acidic solution, the water or the acidic solution has a temperature of from 5° C. to 25° C.
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- What does patent US2023279522A1 cover?
- A method for dissolving a lithium compound according to the present invention includes bringing a lithium compound into contact with water or an acidic solution, and feeding, separately from the lithium compound, a carbonate ion to the water or the acidic solution to produce carbonic acid, and allowing the carbonic acid to react with the lithium compound to produce lithium hydrogen carbonate.
- Who is the assignee on this patent?
- Jx Nippon Mining & Metals Corp
- 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 Thu Sep 07 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).