一种强化酸性溶液中钪与铁萃取分离的方法
By introducing fluoride ions into the acidic leachate and controlling the molar ratio of iron to fluorine to form FeF2+ complexes, combined with optimized extraction conditions, the problem of low scandium-iron separation efficiency was solved, achieving efficient scandium recovery and iron-scandium separation, which is suitable for large-scale industrial production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CENT SOUTH UNIV
- Filing Date
- 2026-03-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for separating scandium and iron suffer from high costs, low efficiency, and poor separation results in large-scale production. In particular, commercial extractants have low scandium-iron separation coefficients, resulting in long subsequent processing steps and low overall recovery rates of valuable metals.
Fluoride ions are introduced into the acidic leachate. By controlling the molar ratio of iron to fluorine, a stable FeF2+ complex is formed, which reduces the iron extraction rate while maintaining a high scandium extraction rate. Commercial extractants such as P204 and P507 are used, and extraction conditions such as pH, extractant concentration, phase ratio, and temperature are controlled to carry out multi-stage extraction and separation.
It achieves efficient separation of scandium and iron, with high scandium recovery rate, significantly improved iron-scandium separation coefficient, simplified process, strong adaptability, and suitability for industrial applications.