Preparation of active aluminum hydroxide and its use for production of finely dispersed alumina / Loginova I.V., Shoppert A.A. // Russian Journal of Non-Ferrous Metals. - 2014. - V. 55, l. 3. - P. 234-237.

ISSN:

10678212

Type:

Article

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. © 2014 Allerton Press, Inc.

Author keywords:

active aluminum hydroxide; alumina; aluminate solution; aluminum sulfate; precipitation

Index keywords:

Activation energy; Aluminum; Precipitation (chemical); Aluminate solution; Aluminum oxides; Aluminum salts; Aluminum sulfates; High-specific surfaces; Kinetic process; Low temperatures; Non-uniform cr

DOI:

10.3103/S1067821214030080

Смотреть в Scopus:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84903832739&doi=10.3103%2fS1067821214030080&partnerID=40&md5=ab4c0a93a5f872325412f2c49fb4fc2f

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Поле	Значение
Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-84903832739&doi=10.3103%2fS1067821214030080&partnerID=40&md5=ab4c0a93a5f872325412f2c49fb4fc2f
Affiliations	Ural Federal University, ul. Mira 19, Yekaterinburg, 620002, Russian Federation
Author Keywords	active aluminum hydroxide; alumina; aluminate solution; aluminum sulfate; precipitation
References	Mazalov, Y.A., Fedotov, A.V., Bersh, A.V., (2008) Tekhnol. Metall., p. 8; Tuzhilin, A.S., Lainer, Y.A., Surova, L.M., (2007) Russ. J. Non-Ferrous Met., 48 (2), pp. 98-106; Lainer, Y.A., Surova, L.M., Gashkov, G.I., Vol'fson, G.I., (2000), RF Patent 2175951; Aptikasheva, A.G., Formation of a Porous Structure of Aluminum Hydroxides in Conditions of Sulfate-Aluminate Deposition Method (2006) Extended Abstract of Cand. Sci. (Eng.) Dissertation, , Kazan: Kazan Gos. Univ; Pajot, L., Seigneurin, L., (1981), US Patent 4292295; Brichkin, V.N., Vasil'ev, V.V., Besedin, A.A., Gordyushenkov, E.E., (2011) Sbornik Dokladov 3-Go Mezhdunarodnogo Kongressa "Tsvetnye Metally-2011 (Collected Reports of the 3rd Int. Congr. "Nonferrous Metals-2011), p. 142; Kuznetsov, S.I., Derevyankin, V.A., (1964) Fizicheskaya Khimiya Proizvodstva Glinozema Po Sposobu Baiera (Physical Chemistry of Alumina Production by the Bayer Method), , Moscow: Metallurgiya; Loginova, I.V., Loginov, Y.N., Shoppert, A.A., (2012), RF Patent 2447023; Vol'dman, G.M., Zelikman, A.N., (2003) Teoriya Gidrometallurgicheskikh Protsessov (Theory of Hydrometallurgical Processes), , Moscow: Metallurgiya; Lee, S.O., Jung, K.H., Oa, C.J., (2009) Hydrometallurgy, 98, p. 156
Correspondence Address	Loginova, I. V.; Ural Federal University, ul. Mira 19, Yekaterinburg, 620002, Russian Federation; email: loginova_irina@mail.ru
Publisher	Allerton Press Incorporation
Language of Original Document	English
Abbreviated Source Title	Russ. J. Non-ferrous Met.
Source	Scopus