Method for recovering mixture containing lithium compound and graphite from waste battery
A pretreatment method using soda solution and high-temperature dry heat treatment addresses the challenges of lithium-ion battery recycling by effectively separating lithium compounds and graphite, enhancing recovery efficiency and reducing emissions.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- POSCO HLDG INC
- Filing Date
- 2025-12-15
- Publication Date
- 2026-06-18
AI Technical Summary
Existing lithium-ion battery recycling methods face challenges such as long leaching times, low leaching efficiency due to graphite and organic binder impurities, and carbon emissions, making it difficult to effectively separate and recover lithium compounds and graphite.
A method involving a pretreatment step to remove organic compounds from lithium compounds and graphite using a soda solution, followed by high-temperature dry heat treatment and magnetic separation to restore hydrophobicity, enabling efficient recovery of a mixture containing lithium compounds and graphite.
The method allows for easy recovery of high-quality lithium compounds and graphite by restoring their hydrophobicity, facilitating subsequent flotation and leaching processes, thereby improving recovery efficiency and reducing carbon emissions.
Smart Images
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