Preparation of High-Purity Alumina by Hydrolyzing High-Purity Metal Aluminum

Liu Jian Liang; Jin Hu; Wang Kai Jun; Zhu Xiao Qin

doi:10.4028/www.scientific.net/AMR.105-106.805

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 105-106Preparation of High-Purity Alumina by Hydrolyzing...

Preparation of High-Purity Alumina by Hydrolyzing High-Purity Metal Aluminum

Abstract:

This paper puts forward a new method for the preparation of 99.999% high-purity alumina used for the LED underlay sapphire, which has above 99.999% high-purity aluminum atomized the active aluminum powder by the supersonic multistage cooling way, then makes the powder form the hydrate of the alumina through the hydrolyzing reaction, and finally gets 99.999% high-purity alumina by means of the calcinations and the follow-up granularity treatment. By the processing way, the reactant is only aluminum and water, and there is no other additive, which profitably keeps the product pure and completely satisfies the requirements of synthetic crystals while tested.

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Periodical:

Advanced Materials Research (Volumes 105-106)

Pages:

805-807

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.105-106.805

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Online since:

April 2010

Authors:

Liu Jian Liang, Jin Hu, Wang Kai Jun, Zhu Xiao Qin

Keywords:

High Purity Aluminium, Hydrolyzing

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References

[1] H.H. Zhao, C.B. Ouyang, Y.Z. Liu: Chem. Sci. Technol. Vol. 11.

Google Scholar

[1] (2003), p.45.

Google Scholar

[2] X.L. Song: Ceram. Eng. (2001), p.12.

Google Scholar

[3] K. Hayashi, et al.: JIM Vol. 32 (1991), p.1024.

Google Scholar

[4] H. Gao, B.K. Wang: China Patent CN-1195646A. 1998. 10. 14.

Google Scholar

[5] P.N. Zhu, Z. Wang, G.Z. Ding: Chemical Message Vol. 5 (1986) p.1.

Google Scholar

[6] B. Ma, G.R. Zheng, X.G. Dai: Chemical Progress Vol. 2 (1996), p.28.

Google Scholar

[7] Y.H. Liu, X.Y. Su, K. Chen: China Ceramics Vol. 32.

Google Scholar

[4] (1996), p.7.

Google Scholar

[8] L.X. Dai, Q.W. Duan, R.E. Wang: China Patent (201014A).

Google Scholar

[9] H.M. Zeng, C.G. Li: View on high technology and new materials. China Scientific & Technologic Publishing House, Beijing (1993).

Google Scholar

[10] B. Fegley, et al.: Journal of American Ceramic Society (1984), p. C67.

Google Scholar

[11] F.Q. Zheng, J.L. Liu, M. Xie: China Patent (991151070).

Google Scholar

[12] J. Liu, A. Shi, et al.: China Patent (031488307) Fig. 3 SEM photograph of α alumina after 1300°C calcination Fig. 4 XRD patterns after 1300°C calcinations.

Google Scholar