Effect of αk on Aluminium Trihydroxide Crystallization from Sodium Aluminate Soluntion under Ultrasound

Yu Sheng Wu; Yan Ping Qu; Lin Nan Zhang; Mo Liu

doi:10.4028/www.scientific.net/MSF.704-705.364

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HomeMaterials Science ForumMaterials Science Forum Vols. 704-705Effect of αk on Aluminium Trihydroxide...

Effect of α_k on Aluminium Trihydroxide Crystallization from Sodium Aluminate Soluntion under Ultrasound

Abstract:

The ultrasound intensification crystallization process of aluminium trihydroxide from seeded sodium aluminate solution is investigated with various α_k(the molecule ratio of Na₂O/Al₂O₃). The experiment results indicate that ultrasound intensification can enhance precipitation ratio of seeded sodium aluminate solution, while large α_k does not good to improvement of the precipitation under ultrasound. When α_k is 1.45, 2.0 and 2.5, the precipitation ratio increase 2.5%, 2.0% and 0.9%, respectively under ultrasound intensification. The mechanism of enhancement on precipitation of alumina hydrate is acoustic cavitations that enhance or alter reactions process of aluminate ions, Al (OH)^-₄. The mass percentage of precipitation production grain size <45μm is increased by 4.3 % under ultrasound intensification with initial α_kat 2.0, which is the biggest. Key words: ultrasound; sodium aluminate solution; precipitation; aluminium trihydroxide

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Materials Science Forum (Volumes 704-705)

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364-369

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https://doi.org/10.4028/www.scientific.net/MSF.704-705.364

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December 2011

Authors:

Yu Sheng Wu, Yan Ping Qu, Lin Nan Zhang, Mo Liu

Keywords:

Aluminium Trihydroxide, Precipitation, Sodium Aluminate Solution, Ultrasound (US)

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References

[1] R. Chester, F. Jones, M. Loan, A. Oliveira and W. R. Richmond: Hydrometallurgy Vol. 96 (2009), p.215.

Google Scholar

[2] H. Watling, J. Loh and H. Gatter: Hydrometallurgy Vol. 55 (2000), p.275.

Google Scholar

[3] F. Farhadi and M. B. Babaheidary: J. Crystal Growth Vol. 234 (2002), p.721.

Google Scholar

[4] B. DASH, C. B. Tripathy, I. N. Bhattacharya, S. C. Das, C. R. Mishra and B S Pani: Hydrometallurgy Vol. 88 (2007), p.121.

Google Scholar

[5] N. Brown: J. Crystal Growth Vol. 29 (1975), p.309.

Google Scholar

[6] Z. Wang, S. W. Bi, Y. H. Yang and Z F Yuang: J. Crystal Growth Vol. 274 (2005), p.218.

Google Scholar

[7] A. M. Paulaime, I. Seyssiecq and S. Veesler: Powder Technolo. Vol. 130 (2003), p.345.

Google Scholar

[8] H. X. Li, J. Addai-Mensah, J. C. Thomas and A R Gerson:. J. Crystal Growth Vol. 279 (2005), p.508.

Google Scholar

[9] I. Seyssiecq, S. Veesler, D. Mangin, J. P. Klein and R Boistelle: Chem. Eng. Sci. Vol. 55 (2000), p.5565.

Google Scholar

[10] F. Chen, B. Y. Zhang, S. W. Bi, Y. H. Yang. and Y. G. Chen: Chin. J. Nonfe. Met. Vol. 96 (2009), p.2054 (in Chinese).

Google Scholar

[11] Y. S. Wu, D. Zhang and M C Li: Trans. Nonferrous Met. Soc. China Vol. 20 (2010), p.528.

Google Scholar

[12] J. B. Liu, J. Q. Chen, Z. L. Yin, P. M. Zhang and Q. Y. Chen: Chin. J. Process Eng. Vol. 4 (2004), p.130.

Google Scholar

[13] B. Zhang, J. Li, Q. Y. Chen and G. H. Chen: Miner. Eng. Vol. 22 (2004), p.853.

Google Scholar

[14] J. H. Park, S. W. Kim, S. H. Lee, H. S. Kim, S. S. Park, and H. C. Park: J. Mater. Synth. Process. Vol. 10 (2002), p.289.

Google Scholar

[15] M. A. Margulis: Ultrasonics, Vol. 7 (1985), p.157.

Google Scholar

[16] T. Imamura: Ultrasonics, Vol. 37 (1999), p.71.

Google Scholar