Mixtures in the system Na 2 SO 4 + C + SiO 2 after heat-treatment at different temperatures are investigated. A characteristic feature of the interaction at 900°C is flotation of quartz grains together with the formation of a dense silica-containing surface layer. Separation of the mixture with flotation of incompletely fused material is characteristic for commercial technology with reducer deficiency. The reactivity of sulfates and carbons is observed to depend explicitly on their dispersity. A combination of coarse sulfate and finely dispersed carbon is best.

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The possibility and prospects for using cement plant wastes (electric filter dust) in glass melting was evaluated. It was shown that addition of 5 to 15% dust to the batch allows totally excluding sodium sulfate and chalk from the batch. Increasing the content of finely disperse dust in the batch enhances sintering and favors an increase in the specific surface area of the batch and strength of pelleted samples. At a fixed processing temperature, the weight loss decreases with an increase in the dust content.

Казанский национальный исследовательский технологический университет, г. Казань, Россия Активированная углеродная ткань или волокно представляет сегодня особый интерес в производстве селективно проницаемого текстиля, применяемого для защиты от химических и биологических отравляющих веществ. В статье рассмотрена подборка запатентованных технологий производства тканей на основе активированного углерода, а также проблематика разработки таких материалов и перспективные направления усовершенствования их.