一种除氟萃取剂以及从酸性硫酸盐溶液中深度除氟的方法
By using a defluorination extractant containing cation exchange groups and neutral molecular complexing groups, combined with a modifier and a diluent, deep defluorination in acidic sulfate solutions was achieved, solving the problems of incomplete defluorination and impurity contamination in existing technologies, and achieving a low-cost and high-efficiency defluorination effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CENT SOUTH UNIV
- Filing Date
- 2022-10-24
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient for achieving deep defluorination of acidic sulfate solutions in non-ferrous metal hydrometallurgy, and existing methods suffer from problems such as impurity contamination, high cost, and incomplete defluorination.
A defluorinating extractant containing cation exchange groups and neutral molecular complexing groups is used in combination with a modifier and a diluent to deeply remove fluoride from acidic sulfate solutions through single-stage or multi-stage countercurrent extraction and back-extraction.
This method reduces the fluoride content in the solution to 1-15 ppm, reduces wastewater generation, and allows the extractant to be regenerated, thus avoiding problems such as impurity pollution and excessive costs.
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