盐湖提锂用全固态聚合物微颗粒、其制备方法及提锂方法
By preparing all-solid polymer microparticles containing phenylazonaphthol and neutral ligands, the stability and solubility problems of the Sudan I extraction system were solved, realizing efficient and environmentally friendly lithium adsorption extraction, which is suitable for lithium extraction from salt lake brine.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QINGHAI UNIVERSITY
- Filing Date
- 2024-05-14
- Publication Date
- 2026-07-17
AI Technical Summary
The existing phenylazonaphthol extraction system, represented by Sudan I, suffers from problems such as poor chemical stability of the extractant, low solubility, poor dissolving ability, and the need for large amounts of organic solvent dilution, leading to solvent loss and environmental pollution. Therefore, it cannot be effectively applied to industrial lithium extraction.
All-solid polymer microparticles containing phenylazonaphthol and neutral ligands were prepared using microfluidic technology. Lithium adsorption polymer microparticles were prepared in a good solvent by in-situ phase separation method, realizing solid-liquid mass transfer and avoiding the use of additional organic solvents. The all-solid microparticles were prepared by utilizing the solidification and precipitation characteristics of polymers in the aqueous phase.
This invention enables efficient lithium extraction in an alkaline environment, avoids the use and loss of organic solvents, simplifies the extraction process, provides a green and efficient lithium adsorbent, and expands the types and applications of adsorbents.
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