VOL 87, No. 6 (2014)

The effect of the dispersity of the glass batch on the main parameters of the foam glass has been investigated. It has been established that the choice of a certain combination of the grain-size composition of the feedstock and the temperature-time conditions of its foaming ensures the production of foam glass with the specified performance properties.

It is reported about an attempt at local modification of the optical properties in the bulk of macroporous glass plates with a porosity of 0.58 cm ³ / cm ³ and an average channel size of 50 - 70 nm under the action of laser radiation weakly absorbed by the material.... As a radiation source, an ytterbium fiber laser with an emission wavelength? Lambda; = 1.07 µm, pulse duration & tau; _and ~ 100 ns and their repetition rate & upsilon; = 10 - 100 kHz. The dependences of the temperature and power of radiation transmitted through the irradiated area on the duration of exposure are given.

The possibility of producing granulated foam glass based on the use of household and industrial cullet, low-melting ceramic filler and organic additives is considered. An environmentally friendly resource-saving technology for producing heat-insulating material - granular glass-ceramic foam - has been developed. In the study of the physical and technical characteristics of the granules, the methods of mathematical modeling of the experiment were used.

The results of studies on the modification of expanded vermiculite with active silica obtained from raw vermiculite by acid treatment are presented. It is shown that at a firing temperature of 1100 - 1200 ° C, a high-temperature cristobalite phase is formed in the phase composition of the obtained material. The properties and phase composition of ceramic vermiculite samples made on the basis of modified vermiculite and refractory clay are given.

The results of a study of the combustion process of ferrosilicoaluminum (FSA) in nitrogen in the presence of fluorine-containing additives are presented. The phase composition of the combustion products has been studied. It is shown that the introduction of fluorine-containing additives into the initial alloy significantly increases the degree of nitriding (up to 27.2%).

The results of experimental studies of the rheological properties of slips based on clay from the Msterskoye deposit of the Vladimir region, modified by breaking sheet glass and soda, are presented. Experimental data were evaluated.

The basic principles of the POESTA powder electrostatic technology used at the enamel enterprises in Ukraine are considered, the requirements for powders and protective glass enamel coatings are presented. The modern problems of the synthesis of glass enamels for POESTA are analyzed and the results of research on the development and application of single frit nickel-free glass enamel coatings for the specified purpose are presented.

Within the framework of the one-dimensional problem of the evaporation of an absorbing material layer at For the release of laser pulse energy, analytical relationships are obtained for calculating the required energy density at a given scribing depth. These ratios make it possible to determine energy-saving modes of scribing glassy and ceramic materials with volumetric absorption of laser radiation when exposed to one or two laser pulses. The choice of the processing mode depending on the dimensionless parameter [chi; h] makes it possible to reduce energy consumption by a maximum of 25 - 35%.

It is shown that instead of the approach to magnetic control, which is justified for a number of bulk media, based on the polyoperative separation of masses of ferro-impurities by means of dry magnetophoresis, it is expedient to use a similar approach for ash waste, but based on wet magnetophoresis of ferro-impurities from an artificial suspension of the analyzed medium. In this case, the subsequent magnetic enrichment of the separated ferrous deposits is mandatory.