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The results of studies of the physical properties of a Cu / zeolite composite based on zeolite raw materials from the Kulikovskoe deposit in the Amur region are presented. To obtain the composite, the method of ion-plasma sputtering of a copper target in a vacuum was used. For the study, the methods of scanning electron microscopy, X-ray diffraction and Brunauer-Emmett-Teller analysis were used. The possibility of enrichment of the zeolite matrix with copper nanoparticles with an average diameter of 350 nm is shown.
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Rheological and microstructural characteristics of aqueous suspensions of montmorillonite clays containing solid phase particles with dimensions d & # 8804; 160 microns. The dependences of the conditional viscosity of the clay solution and the values ??of the tortuosity coefficient on the volumetric clay content have been established.
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Hits: 8108
The results of the study of the possibility of using igneous rocks of the Republic of Belarus for the synthesis of glasses, petrositalls and stone casting are presented. To optimize technological processes, an integral part of hierarchical modeling was used - the creation of a cluster structure (dendrogram). The dependence of the properties, structure and type of the formed crystalline phases on the chemical and mineral composition of rocks and temperature-time parameters of heat treatment as the main criterion factors providing directional structure and phase formation in the preparation of glass-crystalline materials has been revealed.
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Hits: 8353
Investigations of the physicochemical properties of silica-containing raw materials from the Russian Far East, suitable for the synthesis of foam glass and protective enamel coatings for oil and gas pipelines, were carried out. As a result of studies of the chemical, phase composition, macro- and micro-structure of diatomite from the Chernoyarsk deposit, the gaize of the Botchinsky deposit and quartz sand of the Chalgan deposit, it was found that the most suitable raw material for the synthesis of high-quality glass materials using energy and resource-saving technologies is diatomite from the Chernoyarsk deposit, containing amorphous silica. , quartzite, clay impurities, opal and minor amounts of calcite, mica, zeolite
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It is proposed to use natural raw materials - ferruginous diatomites from the Zhalpak deposit (Kazakhstan) as an affordable cheap raw material for obtaining complex iron oxide silica-containing pigments. Pigments with different colors were obtained. The mineralogical composition, shape and size of particles, their specific surface area and total pore volume have been established by the methods of electron microscopy, BET analysis, M?ssbauer and X-ray phase spectroscopy. According to the results of scanning electron microscopy, diatomite particles, as a result of thermal activation and mechanical action, acquire a spherical shape with a size of 5 - 10 microns.
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The results of chemical and X-ray phase analysis of nonmetallic raw materials are diabase of Arvaten-Karakiy, basalt andesite of Karakhtay, basalts of Asmansay deposits, which are characterized as igneous rocks, and gabbro of Akchinsky deposits are characterized as intrusive rocks. It has been established that the studied igneous rocks are promising raw materials for obtaining heat-insulating materials for various purposes.
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The results of studies of the physical properties of zeolite raw materials from the Vanginsky field in the Amur region are presented. The structural and adsorption properties of the material modified with HCl have been studied. It is shown that the use of a solution with a concentration of 0.5 M promotes an increase in the adsorption properties
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The results of work on the search and study of glass sands in the Rostov region are presented. A description of the geological structure of the subsoil is given and the prospects of identifying deposits of glass sands are estimated. The characteristics of the discovered and explored deposits of glass sands with reserves of more than 15 million tons are presented. The qualitative characteristics and technological schemes of enrichment of this sand to grade OVS-020-B are presented.
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The loss of stability of the wetting water films on the quartz surface with increasing temperature was found. It is assumed that this is due to the temperature dependence of the structure of water in the wall layer. Based on the results of measuring the contact angle of wetting, the calculation of the parameter characterizing the magnitude of the structural forces was carried out. The inversion of the parameter sign is associated with the predominance of the forces of hydrophobic attraction over the forces of hydrophilic repulsion in a certain temperature range. The results of deferrization of glass quartz sands by flotation under temperature action on wetting water films are presented.
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The effect of various electrolytes (soda ash, water glass, sodium tripolyphosphate) and their combinations, as well as thinning additives (Terrablend, Complex M, Fluimis FL70, Fluicer PD96 / F, Hydrocer LC) on the rheological properties and stability of the ceramic slip used to obtain heat-resistant lithium aluminum silicate ceramics. It was found that the maximum liquefaction of the ceramic suspension is achieved with the introduction of the Complex M electrolyte, which is due to the simultaneous creation of two stability factors - electrokinetic and adsorption-solvate.
