A novel low-energy approach to leucoxene concentrate desiliconization by ammonium bifluoride solutions; Chemical technology and biotechnology; Vol. 98, iss. 3

A novel low-energy approach to leucoxene concentrate desiliconization by ammonium bifluoride solutions; Chemical technology and biotechnology; Vol. 98, iss. 3

Bibliographic Details
Parent link:Chemical technology and biotechnology
Vol. 98, iss. 3.— 2023.— [P. 726-733]
Corporate Author: Национальный исследовательский Томский политехнический университет Инженерная школа ядерных технологий Отделение ядерно-топливного цикла
Other Authors: Smorokov A. A. Andrey Arkadievich, Kantaev A. S. Aleksandr Sergeevich, Bryankin D. V. Daniel Valerievich, Miklashevich A. Anna, Kamarou M. Maksim, Romanovski V. Valentin
Summary:Title screen
BACKGROUND Despite the large reserves of titanium ores, their treatment by basic approaches to obtain titanium products is not always economically feasible due to various factors. One of these problems is the high content of silicon in the ores. RESULTS The paper considers the desiliconization of a leucoxene concentrate with an aqueous solution of ammonium bifluoride. It was found that at 80 °C the main impurities, such as silicon and iron, pass into solution in the form of corresponding ammonium–fluorine complex compounds. CONCLUSIONS The degree of desiliconization was up to 99%. Aluminium reacts with ammonium bifluoride, but is almost not leached into solution due to its low solubility. Titanium does not react due to its relatively higher reaction Gibbs energy among other metals in reaction with ammonium bifluoride. The content of titanium oxide in the calcined leaching residue was 85.52 wt%. The resulting residue corresponds to the raw material used in industry for the production of titanium dioxide pigment or titanium metal by the chlorine method. Iron and silicon can be precipitated from the leaching solution. Furthermore, the resulting filtrate can be evaporated in order to regenerate and reuse ammonium bifluoride. © 2022 The Authors. Journal of Chemical Technology and Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).
Language:English
Published: 2023
Subjects:
электронный ресурс
труды учёных ТПУ
ammonium bifluoride
leucoxene concentrate
desiliconization
hydrometallurgy
бифторид аммония
обескремнивание
гидрометаллургия
Online Access:https://doi.org/10.1002/jctb.7277
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=668461

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