Steklo i Keramika (Glass and Ceramics). Monthly scientific, technical and industrial journal

 

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Improvement of the rheological behavior of mortar slurries treated with Bacillusmucilaginosus culture broth

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Autors: E. M. Dyatlova, E. S. Kakoshko, V. A. Biryuk, and R. M. Markevich
  • Continuous numbering: 987
  • Pages: 29-32
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Heading: Science for ceramic production

The influence of the culture fluid of Bacillus mucilaginosus on the rheological properties of clay suspensions was studied. It was found that the culture liquid plays the role of a surfactant, promotes the dilution of the clay suspension with a decrease in humidity and an increase in its sedimentation stability, which makes it possible to exclude the use of electrolytes without deteriorating the main technological parameters of the slip and the properties of the obtained semi-finished product. This provides an expansion of the interval of the liquefied state of slips, a decrease in viscosity, thickening coefficient and an increase in the rate of collection of a ceramic casting into gypsum molds. Tab. 1, ill. 2, bibliography: 5 titles.
Dobrovolsky A.G. Slip casting. - M .: Metallurgy, 1967 .-- 176 p. Kuis, L.V. and Markevich, R.M., The composition of acids in the culture liquid of bacteria of the genus Bacillus, Tr. BSTU. Ser. Chemistry and technology of organic substances. - 2007. - Issue. XV. - P. 123 - 127. Markevich R. M., Kakoshko E. S., Dyatlova E. M., Egorova I. V. Study of the accumulation of polysaccharides in the culture liquid of Bacillus mucilaginosus, used to improve the quality of clay raw materials // Science and technology building materials: state and development prospects: Proceedings of the Intern. scientific and technical conf. - Minsk, 2005. - P. 84 - 86. Markevich R. M., Dyatlova E. M., Kakoshko E. S., Bagnyuk N. A. Accumulation of metabolites of Bacillus mucilaginosus depending on cultivation conditions // Current state and prospects development of microbiology and biotechnology: Proceedings of the Intern. scientific. conf. - Minsk, 2004. - P. 84 - 85. Kakoshko E. S., Dyatlova E. M., Biryuk V. A., Zayats N. I. Influence of microbiological treatment on the technological properties of clays of various mineralogical composition // Glass and ceramics ... - 2005.-N6.-S.10-15. Kakoshko ES, Dyatlova EM, Biryuk VA, Zayats NI Effect of Microbiological Treatment on Technological Properties of Clays with Different Mineralogical Compositions // Glass and Ceram. - 2005. - V. 62.-N5-6.-P.162-166.

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Keywords

clay suspensions, treatment with culture liquid, rheological properties, improvement of casting properties

Use the reference below to cite the publication

E. M. Dyatlova, E. S. Kakoshko, V. A. Biryuk, and R. M. Markevich Improvement of the rheological behavior of mortar slurries treated with Bacillusmucilaginosus culture broth. Steklo i keramika. 2010:83(3):29-32. (in Russ). UDK 666.3.022.69
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Lyudmila Vladimirovna Sokolova