https://elib.belstu.by/handle/123456789/20514 2026-04-08T05:07:32Z https://elib.belstu.by/handle/123456789/6580 Title: Vanadium-containing wastes recycling for enterprises using fuel oil: high expectations Authors: Zharski, I. M.; Orekhova, S. E.; Kurilo, I. I.; Bychek, I. V.; Kryshilovich, E. V. Abstract: Demand for vanadium and its compounds grows: vanadium compounds are extensively used in various industries. Vanadium compounds extraction from industrial wastes is more cost-effective than from natural raw materials. In Belarus, sludge from thermal power plants and wastes of sulfuric acid manufacturers are the sources of secondary vanadium-containing raw materials. Vanadium-containing wastes generation and accumulation in the territory of the Republic of Belarus for recent years are analyzed. The article demonstrates that the development and implementation of recycling procedures for these wastes will resolve environmental problems and save valuable substances not common in nature but applicable in industrial production in the Republic of Belarus. 2012-01-01T00:00:00Z https://elib.belstu.by/handle/123456789/6577 Title: Demonstration of metastable paragenesis in the process of solid phase interaction in the system of СаО – Al[2]O[3] – SiO[2] Authors: Sushkevich, A. V.; Kuzmenkov, M. I.; Shalukho, N. M.; Manak, T. N. Abstract: A short characteristic of new type of foreign dental cements Mineral Trioxide Aggregate (MTA) for root canal dressing is presented. The results of experimental researchesdealing with the development of the composition and method of producing of the national dental cement of the similar purpose. The effect of modifying additions (CaF2, P2O5, Bi2O3, MgO) on the sintering process of clinkers was studied and the demonstration of metastable paragenesis in the of solid phase interaction in the system CaO – Al2O3 – SiO2 was found. The obtained results provide more reliable designing of the mineralogical composition of cement clinker. 2012-01-01T00:00:00Z https://elib.belstu.by/handle/123456789/6579 Title: Physical and chemical properties of Bi[1–x]La[x]Fe[1–x]Co[x]O[3] solid solutions synthesized by different methods Authors: Zatsiupa, A. A.; Bashkirov, L. A.; Shichkova, T. A.; Petrov, G. S. Abstract: By using solid-state and sol-gel technologies solid solutions of the BiFeO[3] – LaCoO[3] system were synthesized. The parameters of their crystal lattice were determined. The temperature dependence of electrical conductivity and thermal expansion of the Bi[1–x]La[x]Fe[1–x]Co[x]O[3](x = 0, 0.05, 0.1, 1.0) samples was studied in air in the temperature range of 300–1,050 K. It was shown that the use of sol-gel technology reduces the temperature and the time of synthesis. The samples obtained by solid-phase method have lower coefficients of thermal expansion and specific conductivity. 2012-01-01T00:00:00Z https://elib.belstu.by/handle/123456789/6575 Title: Investigation of sodium sesquicarbonate producing Authors: Sumich, А. I.; Eshchenko, L. S.; Alekseev, А. D.; Chumak, S. V. Abstract: A method of sodium sesquicarbonate (Na2CO3 · NaHCO3 · 2H2O) producing by polythermal crystallization from the saturated solution at 100°C which contains NaCl, Na2CO3 and NaHCO3 at the molar ratio Na2CO3 : NaHCO3 = 2 : 1 is developed. It is shown that the product of the crystallization represents large crystals of lamellar shape with the length up to 2 mm. Functional scheme of production of Na2CO3 · NaHCO3 · 2H2O based on recycling of mother liquor and mixing with washing water is developed. It allows increasing the product yield from 54.7 to 74.3%. 2012-01-01T00:00:00Z