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Anshits, N. N.
Fedorchak, M. A.
Zhizhaev, A. M.
Sharonova, O. M.
Аншиц, А. Г.
2019-07-01T07:29:26Z
2019-07-01T07:29:26Z
2018-02
Anshits, N. N. Состав и строение ферросфер блочного типа, выделенных из высококальциевых энергетических зол [Текст] / N. N. Anshits, M. A. Fedorchak, A. M. Zhizhaev, O. M. Sharonova, А. Г. Аншиц // Inorganic Materials. — 2018. — Т. 54 (№ 2). — С. 187-194
00201685
https://link.springer.com/article/10.1134/S002016851802001
https://elib.sfu-kras.ru/handle/2311/111363
Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
Polished sections of individual ferrospheres 30 to 40 μm in size, with single-block and blocky structures and a variable glass phase content, have been studied using a scanning electron microscope equipped with an energy dispersive X-ray spectrometer system. The results demonstrate that the single-block globules consist of sintered magnetite crystallites containing Al2O3, MgO, and CaO as impurities and are formed from the pyrite of the initial coal. Characteristically, the ferrospheres with a variable glass phase content differ in the composition of local areas on polished sections of the globules, which attests to inhomogeneity of the melt droplets they formed from. We have identified groups of globules whose overall composition, as well as the composition of their local areas, meet general equations for the interrelation between the concentrations of their components: SiO2 = f(FeO) and SiO2 = f(Al2O3). Comparison of the coefficients of the SiO2 = f(Al2O3) dependence for the globules with the silicate modulus (SiO2/Al2O3) of the aluminosilicate mineral components of the coal indicates that the formation of this type of globules involves pyrite–anorthite or pyrite–albite associates containing quartz impurities. The composition of the spinel ferrite in the globules produced with the participation of anorthite comprises FeO, Al2O3, MgO, and CaO in concentrations of 85–96, 1.7–10, 0.1–1.8, and 0.3–2.8 wt %, respectively. In the albite-based globules, the respective concentrations are 81–92, 0.7–5.9, 1.0–5.7, and 2.2–5.6 wt %. The crystallite size and shape are determined by the size of the local melt areas where the total concentration of spinel-forming oxides exceeds 85 wt %.
Ferrospheres with a blocky structure
formation paths
Состав и строение ферросфер блочного типа, выделенных из высококальциевых энергетических зол
Journal Article
Published Journal Article
187-194
31.15
2019-07-01T07:29:26Z
10.1134/S0020168518020012
Политехнический институт
Кафедра химии
Inorganic Materials
Q2
Q4


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