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Extraction of Li, K, and Rb from zinnwaldite by chlorination roasting with CaCl2
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SYSNO ASEP 0579018 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Extraction of Li, K, and Rb from zinnwaldite by chlorination roasting with CaCl2 Author(s) Kristianová, E. (CZ)
Hong Vu, N. (CZ)
Dvořák, P. (CZ)
Tomaško, T. (CZ)
Vaculíková, Lenka (UGN-S) RID, ORCIDNumber of authors 5 Article number 108420 Source Title Minerals Engineering. - : Elsevier - ISSN 0892-6875
Roč. 204, December 2023 (2023)Number of pages 12 s. Publication form Online - E Language eng - English Country NL - Netherlands Keywords zinnwaldite ; lithium ; potassium ; rubidium ; chlorination ; extraction Subject RIV CB - Analytical Chemistry, Separation OECD category Analytical chemistry Method of publishing Limited access Institutional support UGN-S - RVO:68145535 UT WOS 001097691800001 EID SCOPUS 85173898800 DOI 10.1016/j.mineng.2023.108420 Annotation The extraction of lithium, potassium, and rubidium from lithium mica zinnwaldite was investigated using high-temperature roasting with solid calcium chloride, followed by water leaching of the resulting sinters. This study examined the impact of roasting temperature, heating rate, roasting time, and the calcium chloride content within the roasting mixture on the extraction efficiency of alkali metals. The crucial factors of the roasting process are the roasting temperature and the calcium chloride content within the roasting mixture. The optimal results were achieved when a mixture containing four times the stoichiometric amount of calcium chloride was roasted at 1000 °C for 20 min with a heating rate of 10 °C/min. Under these conditions, 77 % of lithium, 90 % of potassium, and 90 % of rubidium were successfully extracted. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2024 Electronic address https://www.sciencedirect.com/science/article/pii/S089268752300434X?via%3Dihub
Number of the records: 1