PDF
Full
Outline
The extraction of lithium from fly ash by roasting activation with sodium carbonate and leaching with sulfuric acid was studied. The effects of mass ratio of fly ash to sodium carbonate, roasting temperature, roasting time, liquid-solid mass ratio, sulfuric acid concentration, acid leaching temperature and acid leaching time on the leaching rate of lithium were investigated. The dynamic analysis of the leaching process was carried out by using the core-shrinkage model. The results show that under the condition of 800 ℃, fly ash and sodium carbonate are mixed and roasted for 180 min according to the mass ratio of 1∶1, and then leaching with 2 mol/L sulfuric acid at 90 ℃ for 120 min, remarkable leaching effect can be obtained, and the leaching rate of lithium can reach 99.97%, the leaching process is mainly controlled by diffusion. The study has a certain guiding significance for the leaching and recovery of lithium from solid waste resources.
PDF
521
223
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
