A lithium extraction system and method
By using a lithium extraction system that combines multi-stage nanofiltration and reverse osmosis units in series, the problems of energy consumption and impurity entrainment in high-temperature roasting and traditional acid leaching methods have been solved, achieving efficient recovery and purification of lithium and producing high-purity lithium salts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHONGYINGMAITE (JIANGSU) TECHNOLOGY CO LTD
- Filing Date
- 2026-04-21
- Publication Date
- 2026-07-17
AI Technical Summary
Existing lithium extraction processes involve high energy consumption from high-temperature roasting, huge consumption of acid and alkali reagents in traditional acid leaching methods, and severe lithium loss due to entrainment in waste residue and waste liquid, making it difficult to achieve efficient separation and recovery of lithium.
A lithium extraction system employing a multi-stage nanofiltration and reverse osmosis unit connected in series decouples monovalent lithium from polyvalent impurities by utilizing the valence-selective permeation characteristics of the membranes. Combined with a percolation elution mechanism and closed-loop circulation, this system achieves efficient lithium recovery and purification.
The comprehensive lithium recovery rate was increased to over 90% under medium and low temperature conditions, reducing system material and energy consumption and obtaining high-purity lithium salt products.
Smart Images
Figure CN122403473A_ABST