High-Efficiency Extraction of Lithium and Aluminum from Coal Fly Ash Using Activation-Sintering Technology
Abstrak
The objective of this study was to investigate the potential for extracting lithium and aluminum from coal fly ash in depth. The activation-sintering method was used to study how factors like activators, sintering agents, sintering time, leaching concentration, and temperature affect the leaching of lithium and aluminum. A 1:2 Na<sub>2</sub>CO<sub>3</sub> activator was proportioned with coal fly ash for primary incineration at a temperature of 1000 °C for 30 min, after which a 3:1 Na<sub>2</sub>SO<sub>4</sub> sintering agent was added to be proportioned with coal fly ash for secondary incineration at a temperature of 1000 °C for 30 min. The temperature was then increased to 400 °C for 60 min, after which the lithium and aluminum were leached with a 1% H<sub>2</sub>SO<sub>4</sub> solution at 80 °C for 60 min. The leaching process was highly effective, with the lithium and aluminum leached out at rates of approximately 80%.
Topik & Kata Kunci
Penulis (8)
Chenliang Zhang
Yanheng Li
Qiaojing Zhao
Mingjing Xu
Bin Yao
Pengpeng Zhang
Xuan Ji
Jiawei Fan
Akses Cepat
- Tahun Terbit
- 2025
- Sumber Database
- DOAJ
- DOI
- 10.3390/met15020208
- Akses
- Open Access ✓