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Preparation of active aluminum hydroxide and its use for production of finely dispersed alumina

  • Metallurgy of Nonferrous Metals
  • Published:
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Abstract

The preparation of active aluminum hydroxide from the alkali-aluminate solution of the Bayer process with the help of aluminum salt is investigated. For this purpose the ability of the nonuniform crystal growth at low temperatures and without stirring was used. Finally, a precipitate with a high specific surface, which is easily soluble in acids and alkalis, is formed. The activation energy of obtaining active aluminum hydroxide is determined experimentally. This energy constituted 155.4 kJ/mol, which points to the kinetic process mode despite the absence of stirring. The possibility of applying active aluminum hydroxide as a seed for the production of well-crystallized finely dispersed aluminum hydroxide powder, which can be used to fabricate aluminum oxide for nonmetallurgical applications is shown.

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Authors and Affiliations

  1. Ural Federal University, ul. Mira 19, Yekaterinburg, 620002, Russia

    I. V. Loginova & A. A. Shoppert

Authors
  1. I. V. Loginova
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  2. A. A. Shoppert
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Correspondence to I. V. Loginova.

Additional information

Original Russian Text © I.V. Loginova, A.A. Shoppert, 2014, published in Izvestiya VUZ. Tsvetnaya Metallurgiya, 2014, No. 2, pp. 34–38.

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Loginova, I.V., Shoppert, A.A. Preparation of active aluminum hydroxide and its use for production of finely dispersed alumina. Russ. J. Non-ferrous Metals 55, 234–237 (2014). https://doi.org/10.3103/S1067821214030080

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  • DOI: https://doi.org/10.3103/S1067821214030080

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