Abstract
Aluminum dross is a hazardous solid waste produced in the process of electrolytic aluminum or cast aluminum production, with annual emission of more than 3 million tons. Fluoride, aluminum nitride, and soluble salts contained in aluminum dross lead to environmental pollution and health hazard. In this paper, a method of harmless treatment of secondary aluminum dross was proposed. The effects of temperature, liquid–solid ratio, time, and stirring speed on removal rate of nitrogen, fluorine, and chlorine were investigated in detail. The results showed that the removal rates of each element reached the maximum at temperature of 80 °C, liquid–solid ratio of 3:1, time of 2 h, and stirring speed of 400 r/min. The removal rates of nitrogen and fluorine were 62.8% and 77.6%, respectively, and the chlorine was completely removed. The research provides possibility for the harmless treatment and resource utilization of secondary aluminum dross.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Zhang, N Y, Ning, P, Xie, T J, Duan, G (2017) Research Progress on Recycling and Comprehensive Utilization of Aluminum Dross. B. Chin. Ceram. Soc. 36(06): 1951–1956.
He, L, Shi, L, Huang, Q, Hayat, W, Chen, R (2021) Extraction of alumina from aluminum dross by a non-hazardous alkaline sintering process: dissolution kinetics of alumina and silica from calcined materials. Sci. Total Environ. 777: 146123.
Mahinroosta, M, Allahverdi, A (2018) Hazardous aluminum dross characterization and recycling strategies: a critical review. J. Environ. Manage. 223(OCT.1): 452–468.
Zhang, Y, Li, Y, Li, C L, Qu, Y, Wang Y (2021) Characteristics and Removal Process of Aluminum Nitride in Secondary Aluminum Dross: A Review (in Chinese). Conserv. Util. Miner. Resour. 41(2): 144–149.
Murayama, N, Maekawa, I, Ushiro, H, Miyoshi, T, Shibata, J, Valix, M (2012) Synthesis of various layered double hydroxides using aluminum dross generated in aluminum recycling process. Int. J. Miner. Process. 110-111: 46–52.
Ewais, E, Khalil, N M, Amin, M S, Ahmed, Y, Barakat, M A (2009) Utilization of aluminum sludge and aluminum slag (dross) for the manufacture of calcium aluminate cement. Ceram. Int. 35(8): 3381–3388.
Glen, A, Slack, T, F , McNelly (1976) Growth of high purity AlN crystals. J. Cryst. Growth. 34(2): 263–279.
Li Q ,Yang Q , Zhang G (2018) Investigations on the hydrolysis behavior of AlN in the leaching process of secondary aluminum dross. Hydrometallurgy. 182: 121–127.
Liu, X J, Zhang, S H (2010) Resent research progress in the chlorine-contained pollutants and hazard in different fields (in Chinese). Environ. Sci. Technol. 33(S1): 180–183.
Meshram, A, Singh, K K (2018). Recovery of valuable products from hazardous aluminum dross: A review. Resour. Conserv. Recy. 130: 95–108.
Shen, H, Liu, B, Ekberg, C, Zhang, S (2020) Harmless disposal and resource utilization for secondary aluminum dross: A review. Sci. Total Environ. 760: 143968.
Cao, C, Feng, Y, Tai, Q, Jian, Y, Li, J (2017). Effects of isothermal annealing on the oxidation behavior, mechanical and thermal properties of AlN ceramics. Ceram. Int. 43(12): 299–307.
Zhang, Y, Guo, Z H, Han, Z Y, Xiao, X Y, Peng, C (2019). Feasibility of aluminum recovery and MgAl2O4 spinel synthesis from secondary aluminum dross. Int. J. Min. Met. Mater. 26(03): 309–318.
Mahinroosta, M, Allahverdi, A (2018) Enhanced alumina recovery from secondary aluminum dross for high purity nanostructured γ-alumina powder production: Kinetic study. J. Environ. Manage. 212(15): 278–291.
Acknowledgements
This work was supported by the National Natural Science Foundation of China (U1710257, U1702253, U1903129), the National key research and development plan (2017YFC0210403-04, 2017YFC0210404).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2022 The Minerals, Metals & Materials Society
About this paper
Cite this paper
Zhao, X., Liu, Y., Lyu, G., Zhang, Y., Zhang, Ta. (2022). Removal of Fluorine, Chlorine, and Nitrogen from Aluminum Dross by Wet Process. In: Eskin, D. (eds) Light Metals 2022. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-92529-1_7
Download citation
DOI: https://doi.org/10.1007/978-3-030-92529-1_7
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-92528-4
Online ISBN: 978-3-030-92529-1
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)