The effectiveness of using borate (borax) and fluoride (sodium fluoride) fluxes in the sintering of crystalline (sand) and amorphous (diatomite) silicate raw materials was considered. The change in the density and appearance of samples
with varying degrees of fluxes during their heat treatment at different temperatures was described. It was shown that
the introduction of 4 wt. % borax reduces the temperature to reach a density of 1500 kg/m3 by 100 °C, and 6 wt. % borax – by 200 °C. It was shown that the introduction of fluxes increases the amount of X-ray amorphous glass phase due
to depolymerization of the silicon-oxygen network and the formation of a low-temperature melt.
Boris M. Gol’tsman – Candidate of Technical Sciences, Associate Professor, “General Chemistry and Technology of Silicates” Department, Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia
Elena A. Yatsenko – Doctor of Technical Sciences, Head of Department, “General Chemistry and Technology of Silicates” Department, Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia
Yuriy A. Bostanov – master’s student, “General Chemistry and Technology of Silicates” department, Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia
Anna E. Panteleeva – master’s student, “General Chemistry and Technology of Silicates” Department, Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia
Victoria A. Smoliy – Candidate of Technical Sciences, Associate Professor, “General Chemistry and Technology of Silicates” Department, Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia
Vladislav S. Yatsenko – postgraduate student, “General Chemistry and Technology of Silicates” Department, Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia
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DOI: 10.14489/glc.2024.03.pp.037-043
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