Investigation on the Effect of Roasting and Leaching Parameters on Recovery of Gallium from Solid Waste Coal Fly Ash
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Methods
2.2.1. Alkali Roasting before Acid Leaching
2.2.2. Acid Leaching
3. Results
3.1. Sample Characterization
3.2. Comparison of Acid Leaching and Roasting before Acid Leaching
3.3. Influence of Roasting Stage
3.3.1. Effect of Roasting Temperature
3.3.2. Effect of Roasting Time
3.3.3. Effect of the Mass Ratio of NaF to CFA
3.4. Influence of Acid Leaching Stage
3.4.1. Effect of Acid Leaching Temperature
3.4.2. Effect of Acid Leaching Time and HNO3 Concentration
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Sample | Al2O3, % | SiO2, % | CaO, % | TiO2, % | Fe2O3, % | Ga, % | Loss on Ignition, % |
---|---|---|---|---|---|---|---|
CFA | 41.73 | 22.51 | 2.44 | 1.79 | 1.47 | 0.00671 | 9.19 |
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Huang, J.; Wang, Y.; Zhou, G.; Gu, Y. Investigation on the Effect of Roasting and Leaching Parameters on Recovery of Gallium from Solid Waste Coal Fly Ash. Metals 2019, 9, 1251. https://doi.org/10.3390/met9121251
Huang J, Wang Y, Zhou G, Gu Y. Investigation on the Effect of Roasting and Leaching Parameters on Recovery of Gallium from Solid Waste Coal Fly Ash. Metals. 2019; 9(12):1251. https://doi.org/10.3390/met9121251
Chicago/Turabian StyleHuang, Jing, Yingbin Wang, Guanxuan Zhou, and Yu Gu. 2019. "Investigation on the Effect of Roasting and Leaching Parameters on Recovery of Gallium from Solid Waste Coal Fly Ash" Metals 9, no. 12: 1251. https://doi.org/10.3390/met9121251