Method and apparatus for recycling lithium iron phosphate batteries
US-10741890-B2 · Aug 11, 2020 · US
Method for manufacturing battery material
US2025046900A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025046900-A1 |
| Application number | US-202418788131-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 30, 2024 |
| Priority date | Aug 3, 2023 |
| Publication date | Feb 6, 2025 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The manufacture method disclosed herein includes: a preparation step of preparing a recovery object containing lithium and a first metal element; a chlorination heating step of heating the recovery object together with a metal chloride to produce LiCl; and a water dissolution step of immersing the recovery object after the chlorination heating step in water to dissolve LiCl in water to obtain a Li solution. In the manufacture method disclosed herein, a heating temperature in the chlorination heating step is 1000° C. or lower, and the metal chloride contains a second metal element that is more easily chlorinated than the first metal element in the recovered object and more hardly chlorinated than lithium in the chlorination heating step. Thereby, Li can be easily recovered from the recovery object at a low temperature of 1000° C. or lower.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for manufacturing a battery material, comprising: a preparation step of preparing a recovery object containing lithium and a first metal element; a chlorination heating step of heating the recovery object together with a metal chloride to produce LiCl; and a water dissolution step of immersing the recovery object after the chlorination heating step in water to obtain Li solution in which the LiCl is dissolved in the water, wherein a heating temperature in the chloride heating step is 1000° C. or lower, and the metal chloride contains a second metal element, in the chlorination heating step, the second metal element is easily chlorinated than the first metal element and, the second metal element is hardly chlorinated than lithium. 2 . The method according to claim 1 , wherein the first metal element includes at least one selected from a group consisting of Ni, Co, Mn, Al, Cu, and Fe. 3 . The method according to claim 2 , wherein the second metal element includes at least one selected from a group consisting of Ca, Mg, Ba, Sr, Ra, and Be. 4 . The method according to claim 1 , wherein the heating temperature is 800° C. or higher. 5 . The method according to claim 1 , wherein the chlorination heating step is conducted under a reduced pressure environment at 5.0×10 2 Pa or lower. 6 . The method according to claim 1 , further comprising a Li precipitation step of precipitating a Li compound crystal from the Li solution. 7 . The method according to claim 1 , further comprising an acid exudation step of immersing solids after the water dissolution step in an acid liquid to dissolve the first metal element in the acid liquid to obtain a metal solution.
Assignees
Inventors
Classifications
- C22B47/00Primary
Obtaining manganese · CPC title
Treatment or purification of solutions, e.g. obtained by leaching (C22B23/0407 takes precedence) · CPC title
Obtaining lithium · CPC title
Wet processes · CPC title
Oxides; Hydroxides · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2025046900A1 cover?
- The manufacture method disclosed herein includes: a preparation step of preparing a recovery object containing lithium and a first metal element; a chlorination heating step of heating the recovery object together with a metal chloride to produce LiCl; and a water dissolution step of immersing the recovery object after the chlorination heating step in water to dissolve LiCl in water to obtain a…
- Who is the assignee on this patent?
- Prime Planet Energy & Solutions Inc, Univ Tokyo
- What technology area does this patent fall under?
- Primary CPC classification C22B47/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Feb 06 2025 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).