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Temperature effect on the behavior of Ta and Nb during the dissolution of pyrochlore, tantalite, β - Ta2O5 and β - Nb2O5 in (HF+HCl) solutionsстатья
- Авторы: Korzhinskaya V.S., Kotova N.P.
- Журнал: Experiment in GeoSciences
- Том: 26
- Номер: 1
- Год издания: 2020
- Первая страница: 93
- Последняя страница: 95
- Аннотация: The solubilities of tantalum and niobium oxides, as well as the natural minerals of pyrochlore (Ca,Na)2(Nb,Ta)2O6(O,OH,F) and tantalite (Mn,Fe)(Ta,Nb)2O6 in (HF+HCl) mixed fluids were experimentally studied. The data obtained made it possible to estimate the equilibrium contents of niobium and tantalum in (HF+HCl) solutions at 300 - 550 ° C and 100 MPa in the presence of Co-CoO oxygen buffer. The initial HF concentration varied from 0.01m to 2 m, and the HCl concentration remained constant at 0.5 m. The effect of temperature on the solubility of Ta and Nb oxides, as well as pyrochlore and tantalite minerals, has been established. A comparative analysis of the equilibrium contents of Nb and Ta is carried out.
- Добавил в систему: Коржинская Валентина Сергеевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | KorzhKot-ExpGeos-2020.pdf | 743,6 КБ | 2 ноября 2020 [nikvalkor] | |
| 2. | ExperGeos_2020.pdf | ExperGeos_2020.pdf | 364,9 КБ | 2 ноября 2020 [nikvalkor] |