| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction and Processing
|
| Presentation Title |
Comprehensive Processing of Mica Concentrate from Yaroslavsky GRK for Lithium Carbonate, Potassium Sulfate, Aluminum Sulfate, Rubidium and Cesium |
| Author(s) |
Andrey V. Panov, Aleksandr Suss, Nataliya Kuznetsova, Sergey Ostashin, Evgeniy Isakov |
| On-Site Speaker (Planned) |
Aleksandr Suss |
| Abstract Scope |
UC RUSAL’s Yaroslavsky Mining Company (Yaroslavsky GRK) operated two world’s largest fluorite deposits in East Cost of Russia. The fluorite extraction process leaved rare alkali metals (Li, Rb, Cs, and K) in the tailings and becomes a potential raw material source for these elements. In 2015-2018 Irgiredmet (Irkutsk, Russia) jointly with Central South University (Changsha, China) developed and pilot tested the technology of beneficiation of the tailings from Yaroslavsky GRK to extract fluorite and produce mica concentrate with rare alkali metals content ΣLi2O+Rb2O+Cs2O = 1.5÷1.7 mass. %. To process mica concentrate the energy-efficient technology of sulfuric acid – fluoride low-temperature atmospheric leaching was developed enabling to exclude the preliminary roasting commonly used for processing such ores. The technology was proven in pilot scale resulting in range of products meeting customer requirements: battery grade lithium carbonate (Li2CO3 ≥ 99.9 %), first grade potassium sulfate, rubidium and cesium formiats, and aluminum sulfate. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Process Technology, Extraction and Processing, Other |