二次铝灰渣土壤化的方法
By using acid leaching and porous adsorption column technology prepared from oyster shells, the problem of heavy metal removal from secondary aluminum ash slag has been solved, achieving efficient resource utilization and soil improvement. It is suitable for planting and saline-alkali soil improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 重庆市地质矿产勘查开发局川东南地质大队
- Filing Date
- 2025-02-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for the resource utilization of secondary aluminum ash are characterized by low efficiency, insufficient technological sophistication, difficulty in removing heavy metals, high costs, and limited application scope.
Secondary aluminum ash slag was treated with acid leaching, and a porous adsorption column prepared from oyster shells was used to adsorb heavy metals during the acid leaching process. After filtration and washing, the pH value was adjusted to neutral. The resulting mixture B can be directly used for planting or soil improvement.
It achieves efficient removal of heavy metals from secondary aluminum ash, simplifies the operation process, reduces costs, is suitable for large-scale use, and improves the structure and quality of saline-alkali soil.
Smart Images
Figure CN119699151B_ABST