VOL 90, No. 8 (2017)

A porous composite material based on zirconium oxide fibers has been obtained, which has a high resistance to the action of a concentrated alkaline solution and satisfactory mechanical strength. Samples were made with different pore sizes in layers that perform different functions. The study of the obtained samples showed that zirconium oxide fibers with high thermal stability and chemical resistance, especially to the action of alkalis, have good prospects for the manufacture of separators for alkaline batteries, especially in cases where it is necessary to combine high energy characteristics with increased reliability and service life.

The effect of two deflocculants that effectively reduce the viscosity of the cement paste has been investigated. sodium tripolyphosphate (PF) and Castament FS 20 (C1) based on polycarboxylate ether and their mixture on the structure of a cement stone with microsilica after holding at a temperature of 65 ° C, drying and firing. In the course of aging, the mineral strutlingite is additionally formed in the samples with C1. It was found that C1 promotes the active formation of the mineral anorthite, while PF? crystallization of gehlenite during firing. When a mixture of PF and C1 is used, crystallization of anorthite prevails in the sample. The results of the density and strength of concrete specimens with PF are higher than those of specimens with C1, however, the shrinkage phenomena in them are greatest. The equal ratio of PF and C1 in the mixture reduces shrinkage, allowing you to obtain the highest strength and density of concrete after firing at a temperature of 1200 ° C

The use of the heat of cooling of molten glass in the working ducts of the furnace for the production of container glass is considered. Intermediate heat carrier application? circulating flue gases? allows to achieve high thermal homogeneity, high-quality regulation of the temperature of the glass melt, high intensity of heat exchange, flexibility in the construction of thermal circuits. The use of the heat of the molten glass for the steam reforming of a part of the natural gas used to heat the melting part of the furnace makes it possible to reduce the total fuel consumption by 5%. When steam is obtained due to the heat of the melt in the working channel, it is possible to generate about 16 kWh of electricity per 1 ton of melted glass.

Currently, the problem of obtaining a defect-free corrosion-resistant glass enamel coating for steel pipelines is an urgent problem. The composition of the corrosion-resistant glass enamel coating for steel pipelines has been developed, the technical and operational properties of the synthesized glass enamel coatings have been investigated. The developed compositions of enamel coatings have a high adhesion rate, chemical resistance to aggressive media and can be recommended for implementation in the production of enameled pipes.

To the 110th anniversary of the South Russian State Polytechnic University (NPI) named after M.I. Platova. The history of education, the types of activities of the department? General chemistry and technology of silicates? as part of the Faculty of Technology and the direction of training for the building materials industry. The scientific directions and research results of the employees of the department are presented.

Optimal compositions for the synthesis of foam glass with the use of slag waste from thermal power plants have been developed? foam slag glass. Based on the experimental data, a program has been created for modeling the foaming process, which makes it possible to establish the structure of foamed slag glass without carrying out additional experimental studies.

The possibility of using ash and slag waste from thermal power plants in the production of heat-insulating glass materials has been established. Compositions with different granulometric composition of the charge have been developed, and heat treatment has been carried out. The main properties of the synthesized samples were determined, the effect of particle size on the foaming of granules and the optimal dispersion of the charge was established.

Based on the R ₂ O? BaO? TiO ₂? SiO ₂ system (where R ₂ O? Li < sub> 2 O, K ₂ O and Na ₂ O) glass with low crystallization capacity has been developed; the value of the tangent of the angle of dielectric losses equal to 0.0035; density 3388 kg / m ³; TCLE, amounting to 84.5 · 10? 7 K? 1; the minimum absorption of radio waves in the ranges of 8? 11.3 and 26? 35 GHz