Articles

The Replacement of Quartz Sand with Microsilica for Obtaining Glass Materials

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The article presents the physicochemical and technological characteristics of amorphous silica fume. According to the results of experimental studies, it can be established that the replacement of natural quartz sand with ferrosilicon waste–microsilica in the glass charge does not reduce its main physical, chemical and technological characteristics. It is shown that the replacement of quartz sand with microsilica in the raw material composition of the glass charge leads to a decrease in the temperature of smooth formation, in particular, glass melting, as a result of which it helps to save natural raw materials and energy resources, while solving the problems of improving the environmental situation in the industrial region of the Republic.

Use of Industrial Waste in the Development of Ceramic Mass Compositions

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The compositions of ceramic masses for facing slabs based on Angren secondary kaolin and clay were developed, using metallurgical waste–iron–containing dust from the gas cleaning of “Uzmetkombinat” JSC and sandy waste from the Toytepe fluorite enrichment plant. With the help of differential thermal and X–ray phase analysis, the chemical–mineralogical compositions, exothermic and endothermic effects of the used components of ceramic masses were determined during their heat treatment. Thus, the suitability of using these wastes for the development of the composition of ceramic masses has been established.