一种从低Li高Na溶液中回收Li的萃取剂及方法
By using a synergistic system of neutral extractant TBP and chelating extractant Lix54-100, along with the modifier 2-octanol, the problem of efficient lithium extraction from low-grade lithium mica solutions was solved, achieving high extraction rate and high separation effect. This method is suitable for lithium recovery from various low-Li, high-Na solutions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING UNIV OF TECH
- Filing Date
- 2023-12-26
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient for efficiently extracting lithium from low-grade lepidolite solutions, and traditional extraction methods are costly and cumbersome in low-Li, high-Na solutions, failing to meet the demand for efficient lithium resource recovery.
A synergistic extraction system was formed by neutral extractant TBP and chelating extractant Lix54-100. Octyl alcohol was used as a modifier and sulfonated kerosene as a diluent. The composition of the extractant and the extraction conditions were optimized to improve the lithium extraction rate and the lithium/sodium separation effect.
It achieves efficient lithium extraction, improves lithium extraction rate and lithium/sodium separation coefficient, is simple to operate, and is suitable for low-Li, high-Na solutions from different material sources, meeting the needs of low-grade lithium resource recovery.