一种锂云母提锂渣的综合回收利用方法
By using methods such as alkali leaching, acid precipitation, evaporation concentration, and alkali removal, the problem of insufficient recovery and utilization of lithium, potassium, and aluminum elements in lithium extraction slag from lepidolite has been solved, achieving efficient resource recovery and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGSHA DESIGN & RES INST OF CHEM IND MIN
- Filing Date
- 2022-10-28
- Publication Date
- 2026-07-17
AI Technical Summary
The current technology does not fully utilize the lithium extraction slag from lepidolite, resulting in the waste of valuable elements Li, K, and Al and environmental pollution.
The lithium extraction process involves leaching with alkali, precipitation with acid, evaporation and concentration, and removal of impurities with alkali. Lithium, potassium, and aluminum are separated and recovered from the lithium mica slag by leaching with an alkaline solution, and potassium sulfate, aluminum hydroxide, and lithium carbonate are prepared respectively.
This method enables the efficient recovery of lithium, potassium, and aluminum elements from lithium mica lithium extraction slag, improving resource utilization, reducing environmental pollution, and featuring a simple process with low investment.