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A method for producing glass "bypassing the liquid phase" has been scientifically substantiated and developed. production of glass "from below" based on kanazite synthesized by hydrothermal treatment of amorphous rocks. Kanazit is a complex glass raw material suitable for glass-making without any addition of glass-forming components, as well as clarifiers and decolourizers. Due to the amorphous phase composition and the finely dispersed state of the components, kanazite is characterized by high reactivity, which leads to an intensive course of glass-making processes at lower temperatures. Il. 3, bibliography: 10 titles.
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It is shown that the quartz sand of the Khojikul deposit is suitable for use in the glass and ceramic industries. Tab. 1, ill. 2.
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The features of the chemical and mineralogical composition of natural topaz-containing raw materials from the "Kopna" deposit and the processes of phase formation during heat treatment of topaz rocks with different ratios of topaz and quartz components have been investigated. The prospects of its use in the technologies of aluminosilicate ceramics for refractory and technical purposes have been established. Due to its good reinforcing properties, acicular and fibrous mullite, formed during the decomposition of topaz, can be used in various composite materials based on glasses, ceramics, polymers, etc. Table. 2, ill. 3, bibliography: 7 titles.
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The properties of clay shales of the Dzherdanak field (Uzbekistan) have been investigated. It was found that during their heat treatment, a mullite-like phase with an increased content of silicon oxide is formed. The possibility of obtaining refractories, porcelain and faience on the basis of raw materials from this deposit has been determined. Tab. 1, ill. 3, bibliography: 3 titles.
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Clays of the Andreevskoe deposit (Ukraine) are high-quality raw materials suitable for use in the ceramic industry in the manufacture of a wide range of products - from sewer pipes to high-strength insulators. Tab. 1, ill. 1, bibliography: 6 titles.
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The information of geological exploration expeditions engaged in the search and exploration of clay raw materials in various regions of Russia is summarized. The data on the chemical composition and the main technological (ceramic) characteristics of the currently exploited clay deposits in Russia are analyzed. It is concluded that it is necessary to test the refractory clays of the Latnenskoye and Troshkovskoye deposits in the insulator industry. The expediency of continuing work on the study of white-burning refractory clays in the eastern regions of the Leningrad region is shown. Tab. 7, bibliography: 4 titles.
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The process of pneumatic classification of substandard sands is considered. It is shown that due to the optimal choice of the separation boundaries of the apparatus, it is possible to obtain sands that meet the requirements of the state standard in terms of particle size distribution. A mathematical model has been developed that allows to optimize the parameters of the operation of pneumatic classifiers and to obtain the maximum yield of the finished product. Examples of industrial use of pneumatic classifiers are given, which confirm the prospects of using pneumatic classification of sands in the glass industry. Tab. 1, ill. 3, bibliography: 2 titles.
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Perspective deposits of the Urals, suitable for use in the ceramic industry not only in the Urals, but also in other regions of Russia, are considered. Tab. 1.
