一种两步提取铜阳极泥分银渣中铅的方法
By optimizing process parameters through a two-step leaching method and treating copper anode mud with sodium hydroxide, hydrogen peroxide, and sodium sulfide solutions to separate silver slag, the high energy consumption and environmental pollution problems of lead recovery were solved, achieving efficient and low-cost lead recovery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INST OF GEOGRAPHY HENAN ACAD OF SCI
- Filing Date
- 2025-07-05
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for extracting lead from silver slag from copper anode mud suffer from problems such as high energy consumption, environmental pollution, high cost, complex processes, and stringent equipment requirements. Furthermore, traditional methods are difficult to achieve efficient and low-cost lead recovery.
A two-step leaching method is adopted. First, the copper anode mud is leached to separate silver residue with sodium hydroxide solution. Then, it is leached with a mixed solution of hydrogen peroxide and sodium hydroxide. Finally, the lead leaching solution is recovered with sodium sulfide solution and the alkaline leaching solution is recycled. The process parameters are optimized to achieve deep leaching of lead.
It increased the lead leaching rate to 97%, reduced reagent consumption and production costs, reduced environmental pollution, met environmental protection policy requirements, and achieved efficient lead recycling.
Smart Images
Figure CN120776120B_ABST