Two specimens of lake diatomites of Karelia differing by the rock-forming types of diatoms and the form, size, and degree of preservation of the valves are investigated. It is determined that the size of the valves has a large effect on the granulometric composition and physical-chemical properties of diatomites. The SiO2 content in the initial samples of diatomites is 70%. After heat-treatment and leaching it increases to 91% and the iron content decreases sharply to 0.075%. After impurities have been removed, lake diatomites are of interest for the production of sheet glass, crystal articles, glazes and enamels, silicate glasses, as well as ceramic articles.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
I. N. Demidov and T. S. Shelekhova, Diatomites of Karelia [in Russian], Petrozavodsk (2006).
S. É. Ivanov and A. V. Belyakov, “Diatomite and its uses,” Steklo Keram., No. 2, 18–21 (2008).
R. G. Melkonyan, Amorphous Rock and Glass Making [in Russian], NIA-PRIRODA, Moscow (2002).
I. N. Demidov, V. P. Il’ina, T. S. Shelekhova, et al., “Prospects for using diatomites of Karelia,” in: Proceedings of the 2nd International Scientific Conference on the Problems of Rational Use of Natural and Technogenic Raw Materials from the Barents Region in Building and Technical Materials Technology [in Russian], Petrozavodsk (2005), pp. 55–57.
Author information
Authors and Affiliations
Additional information
Translated from Steklo i Keramika, No. 3, pp. 34–36, March, 2009.
Rights and permissions
About this article
Cite this article
Il’ina, V.P., Shelekhova, T.S. Diatomites of Karelia for glass production. Glass Ceram 66, 109–112 (2009). https://doi.org/10.1007/s10717-009-9139-1
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10717-009-9139-1