FULL CYCLE TECHNOLOGY OF LITHIUM ELECTRODE MATERIALS FOR LIB FROM DOMESTIC RAW MATERIALS

In recent years, there has been a steady increase in lithium consumption in high technology. Therefore, new methods for the extraction of lithium are becoming increasingly important. The distribution of lithium stocks in the world is uneven, access to its stocks plays a significant role and affects technological development. Rare-metal pegmatites and lithium-bearing brine are used as the main industrial sources of lithium. This paper discusses the development trends of lithium production from spodumene ore to produce high purity lithium carbonate. The geological characteristics of the main lithium deposits of East Kazakhstan, as well as the possibility of their industrial development, are analyzed. A technology has been developed to produce battery grade lithium carbonate from Kazakhstan spodumene concentrate. Based on high purity lithium carbonate (99.5%), the efficient cathode material LiFePO4 for lithium-ion batteries was synthesized. The technology of a full cycle of processing domestic lithium-containing mineral and industrial raw materials into lithium carbonate for the production of high-tech products: anode and cathode materials for modern LIB is presented. An efficient technology of lithium electrode materials based on high-purity lithium carbonate from domestic spodumene raw materials has been developed. The fundamental possibility of creating a lithium cluster in Kazakhstan for the production of products with a high degree of readiness for the final consumer is shown according to the scheme: Sodumene ores -> Lithium concentrate -> Lithium carbonate -> Lithium cathode materials -> Batteries.