Metal leaching methods
The use of a leaching container with a porous member above the liquid surface in the acidic leaching solution effectively addresses the foaming issue, ensuring efficient metal recovery from lithium-ion battery waste by breaking bubbles and maintaining process stability.
JP7783909B2Active Publication Date: 2025-12-10JX METALS CIRCULAR SOLUTIONS CO LTD JP
Patent Information
- Application Number
- JP2023566105
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-12-09
- Filing Date
- 2022-10-05
- Publication Date
- 2025-12-10
- Estimated Expiration
- 2042-10-05
AI Technical Summary
Technical Problem
The generation of bubbles in the acidic leaching solution during the metal leaching process of lithium-ion battery waste hinders the smooth operation and efficiency of metal recovery.
Method used
A metal leaching method that involves using a leaching container with a porous member positioned above the liquid surface to break bubbles formed in the acidic leachate, with the porous member having openings of 12 mm or less, effectively suppressing foaming.
Benefits of technology
The method effectively suppresses foaming in the acidic leaching solution, allowing for smooth and efficient metal leaching from lithium-ion battery waste, even under conditions that typically generate significant bubbles.
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Smart Images
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Abstract
A metal leaching method includes contacting battery powder of lithium ion battery waste with an acidic leachate 21 inside a leaching container 1 and leaching a metal contained in the battery powder into the acidic leachate 21, wherein the leaching container 1 has a porous member 2 arranged at a position above the liquid surface 22 of the acidic leachate 21 stored inside the container so as to cover the liquid surface 22, and when the metal is leached inside the leaching container 1, gas bubbles Ba generated in the acidic leachate 21 are brought into contact with the porous member 2 and collapsed, the opening of the porous member 2 being 12 mm or less.
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Citation Information
Patent Citations
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