Intensification of glassmaking processes is a priority task for domestic glass industry. The partial (complete) replacement of the carbonate part of the glass mixture with the corresponding hydroxides is a perceptual direction. Obtaining the silicon-sodium concentrate is the result of physico-chemical activation of silicon-containing raw materials with sodium hydroxide used as the sodium-containing component of the mixture. Its phase composition is amorphous and crystalline in the form of low-temperature quartz and sodium metasilicate. The bulk density of the synthesized product meets the requirements of GOST 5100-85 for soda ash. Separation of solid and liquid parts of the synthesized product is carried out using an experimental plant for the extraction with a single extractant. The method of conductometry is used to study the soluble part. The calculation of the residual value of NaOH in the product is based on titrant volumes by equivalence points during the titration of a weighed quantity of the experimental batch of the product and the mass of insoluble residue. The article presents the results of a comparative study of the physico-chemical properties of the products of activation and carbonate mixture to obtain silicate blocks with various modularities. On the basis of physico-chemical properties, the resulting product can be used in the glass industry to produce silicate blocks of various modularities with the expected decrease in temperature and preparation time.
Aim. To obtain conglomerates from copper nanoparticles by the method of electroerosive dispersion in various liquid media (in 1% starch solution, ethanol, acetone, kerosene, petroleum ether) at two different temperatures (negative and room). Assessment of the influence of this factor on the size and shape of the resulting conglomerates.
Methods. Methods based on visual observation of the obtained particles using a digital microscope at a magnification of 600x.
Results. The results are presented in the form of micrographs of the obtained particles.
Conclusions. Conclusions are drawn on the study of the influence of the temperature factor on the morphology (size, shape and ordering) of the resulting conglomerates.
The search for optimal conditions for the method of synthesis of copper (II) salts to create a unified one-step method for obtaining salts from natural raw materials was the purpose of this work. During the process of salt production, it is desirable that the product accumulates in the solid phase and is easily separated by phase separation methods. The study of the direct interaction of copper (II) oxide with acids in organic liquid media using a bead mill as a reactor and grinding agent of different nature showed that besides the usual places of localization of product that take place in practice, we can meet unusual places of localization of product, such as the surface of a foreign solid phase in the reactor zone, for example, the surface of the grinding agent, reactor elements, etc. It was found that in some cases, localization on a solid surface could be a favorable localization option in terms of the speed of the process. But it happens not always, because it requires specific methods of separation of film from surface, which can be very expensive. Often, the localization of the product on the solid surfaces is an extremely unfavorable localization option. It was found that different variants of product localization of interaction CuO with acids which were implemented in different proportions, prevented the creation of a unified method for producing salts in such systems
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