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Information × Registration Number 0210U003396, 0107U002247 , R & D reports Title Physical and chemical characteristics of the multi-component salt melts condition in the processes of the fulfilled nuclear fuel recycling. popup.stage_title Head Buhayenko Valeriy Vasyliyovych, Registration Date 01-02-2010 Organization Sumy State Pedagogical University named by Makarenko popup.description2 For the first time on the basis of analysis of fusibility and mode of mutual saline interaction in a triple mutual system К, Na//BF4, ZrF6 a fusibility diagram was built, a saline composition of a low fusibility was determined, existence areas and thermic resistance conditions were fixed, formation of mixtures Na3ZrF7 and K3ZrF7, as a result of ionic interchange reactions, was defined. - a temperature dependence of the solubility of oxides PbO, Al2O3, ZrO2, MgO, PbO2, Sm2O3, BaO, SiO2, TiO2 and La2O3 in the fusions of the system NaF - ZrF4 and oxides SiO2, TiO2, ZrO2, La2O3, BaO in the fusions of the system KF - ZrF4 was determined and for the first time it was determined, that the chemical composition of the fluorid fusion has an affect on solubility ZrО2 in such a way that during the increase of the ZrF4 content an oxide solubility goes up, that is to say depends on acidic-основний correlation NaF/ZrF4 - it is set that solubility of oxides in the analyzed interval of temperatures in the systems of NAF - Zrf4 and KF - Zrf4 has physical and chemical mode without substantial affect of the chemical interaction with a solvent, so solubility of oxides of metals depends in a greater measure from properties of solvent than from the features of oxide; - research of compatible solubility of two oxides (for example, ZrO2 and La2o3) shows that oxides influence negatively on solubility each of them and total maintenance of oxides in ionic fusion is not increased. This conformity to law gives a right to consider that in fusions is only certain the limited amount of vacancies (holes) which can occupy the molecules of oxide; - the mechanism of process of electroreduction of boron and zirconium is set on different indicator electrodes: the process of discharging of electro-active particles of boron is onephasic, and to zirconium it is one- or twophasic depending on composition of mixture; - optimum composition of electrolyte and parameters of process of electrolysis is set for the electroreduction of zirconium, and his boride, and also element, phase and grain-size composition of product of electrolysis. Product Description popup.authors Бугаєнко В.В. Проценко З.М. Пшеничний Р.М. Чередник І.М. popup.nrat_date 2020-04-02 Close