Advanced manufacturing process of ultrahigh-purity α-Al2O3

G. N. Ambaryan, M. S. Vlaskin, O. A. Buryakovskaya, S. A. Kislenko, A. Z. Zhuk, E. I. Shkolnikov, A. N. Arnautov, S. V. Zmanovsky, A. A. Osipenkova, V. P. Tarasov, A. A. Gromov

Research output: Contribution to journal › Article

Abstract

An advanced method was investigated for production of ultrahigh-purity alumina α-Al2O3 (UHPA, 99.999%) with an oxidation of aluminum (purity 99.7%) granules in 0.1 g/mol aqueous solution of potassium hydroxide with a subsequent hydrochloric acid treatment and calcination of the oxidation product at 1450 °C. The evolution of impurities concentration after subsequent acid and thermal treatment was studied. The total concentration of impurities and especially iron impurity was decreased in UHPA while the concentration of alkali metals (K, Na, Li), on the contrary, was increased by the used production method (Al granules → reaction with alkali → acidic treatment + washing → thermal treatment). The proposed method allowed production of UHPA with purity 99.99% and 99.999% from pellets with the initial purity of aluminum 99.70% and 99.99% respectively. The advantage of the studied method of UHPA production is it's low cost and utility.

Original languageEnglish
Article numbere00065
JournalSustainable Materials and Technologies
Volume17
DOIs
Publication statusPublished - 1 Sep 2018

Fingerprint

manufacturing
Impurities
Aluminum
aluminum
Heat treatment
Alkali Metals
oxidation
Potassium hydroxide
Oxidation
alkali metal
Hydrochloric Acid
Aluminum Oxide
Alkalies
Alkali metals
hydrochloric acid
Hydrochloric acid
Washing
Calcination
aluminum oxide
hydroxide

Keywords

  • Aluminum
  • Impurities
  • Treatment
  • Ultrahigh-purity alumina

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Waste Management and Disposal
  • Industrial and Manufacturing Engineering

Cite this

Ambaryan, G. N., Vlaskin, M. S., Buryakovskaya, O. A., Kislenko, S. A., Zhuk, A. Z., Shkolnikov, E. I., ... Gromov, A. A. (2018). Advanced manufacturing process of ultrahigh-purity α-Al2O3. Sustainable Materials and Technologies, 17, [e00065]. https://doi.org/10.1016/j.susmat.2018.e00065

Advanced manufacturing process of ultrahigh-purity α-Al2O3. / Ambaryan, G. N.; Vlaskin, M. S.; Buryakovskaya, O. A.; Kislenko, S. A.; Zhuk, A. Z.; Shkolnikov, E. I.; Arnautov, A. N.; Zmanovsky, S. V.; Osipenkova, A. A.; Tarasov, V. P.; Gromov, A. A.

In: Sustainable Materials and Technologies, Vol. 17, e00065, 01.09.2018.

Research output: Contribution to journal › Article

Ambaryan, GN, Vlaskin, MS, Buryakovskaya, OA, Kislenko, SA, Zhuk, AZ, Shkolnikov, EI, Arnautov, AN, Zmanovsky, SV, Osipenkova, AA, Tarasov, VP & Gromov, AA 2018, 'Advanced manufacturing process of ultrahigh-purity α-Al2O3' Sustainable Materials and Technologies, vol. 17, e00065. https://doi.org/10.1016/j.susmat.2018.e00065
Ambaryan GN, Vlaskin MS, Buryakovskaya OA, Kislenko SA, Zhuk AZ, Shkolnikov EI et al. Advanced manufacturing process of ultrahigh-purity α-Al2O3. Sustainable Materials and Technologies. 2018 Sep 1;17. e00065. https://doi.org/10.1016/j.susmat.2018.e00065
Ambaryan, G. N. ; Vlaskin, M. S. ; Buryakovskaya, O. A. ; Kislenko, S. A. ; Zhuk, A. Z. ; Shkolnikov, E. I. ; Arnautov, A. N. ; Zmanovsky, S. V. ; Osipenkova, A. A. ; Tarasov, V. P. ; Gromov, A. A. / Advanced manufacturing process of ultrahigh-purity α-Al2O3. In: Sustainable Materials and Technologies. 2018 ; Vol. 17.
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abstract = "An advanced method was investigated for production of ultrahigh-purity alumina α-Al2O3 (UHPA, 99.999{\%}) with an oxidation of aluminum (purity 99.7{\%}) granules in 0.1 g/mol aqueous solution of potassium hydroxide with a subsequent hydrochloric acid treatment and calcination of the oxidation product at 1450 °C. The evolution of impurities concentration after subsequent acid and thermal treatment was studied. The total concentration of impurities and especially iron impurity was decreased in UHPA while the concentration of alkali metals (K, Na, Li), on the contrary, was increased by the used production method (Al granules → reaction with alkali → acidic treatment + washing → thermal treatment). The proposed method allowed production of UHPA with purity 99.99{\%} and 99.999{\%} from pellets with the initial purity of aluminum 99.70{\%} and 99.99{\%} respectively. The advantage of the studied method of UHPA production is it's low cost and utility.",
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