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Effect of solution composition and temperature оn solubllity of tantalum and nioblum oxides, tantalite and pyrochlore in fluoride-chloride fluidsстатья Исследовательская статья
- Авторы: Korzhinskaya V.S., Kotova N.P.
- Журнал: Experiment in GeoSciences
- Том: 28
- Номер: 1
- Год издания: 2022
- Первая страница: 107
- Последняя страница: 110
- Аннотация: Concentration and temperature dependences of tantalum and niobium oxides, as well as natural minerals pyrochlore (Ca, Na)2 (Nb, Ta)2 O6 (O, OH, F) and tantalite (Mn, Fe)(Ta, Nb)2O6 solubility in mixed (m HF + m HCl) fluids have been experimentally studied. The initial concentration of HF varied from 0.01 to 2 m, and the concentration of HCl remained constant and was 0.5 m. The obtained data allowed us to estimate the equilibrium contents of niobium and tantalum in (HF + 0.5m HCl) solutions at T = 300 – 550o C, P = 100 MPa in the presence of an oxygen buffer Co-CoO. The effect of temperature on the solubility of Ta and Nb oxides and minerals of pyrochlore and tantalite has been established. A comparative analysis of the Nb and Ta equilibrium contents in (m HF + m HCl) fluids for niobium and tantalum oxides and natural minerals pyrochlore and tantalite was carried out.
- Добавил в систему: Котова Наталья Петровна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | KorzhKot-ExperGeos-2022.pdf | 1,8 МБ | 7 ноября 2022 [nkotova] | |
| 2. | Первая страница | titul_Exp_GeoSci_2022-1.pdf | 231,4 КБ | 7 ноября 2022 [nkotova] |