METHOD OF REDUCING MAGNETIC AND/OR OXIDIC CONTAMINANTS IN LITHIUM METAL OXYGEN COMPOUNDS

摘要

The present invention relates to a process for reducing magnetic and/or oxidic impurities in lithium-metal-oxygen compounds in particle form, to obtain cleaned lithium-metal-oxygen compounds, by means of treatment in a grinding operation and sifting operation with the cleaned lithium-metal-oxygen compound being continuously or discontinuously removed and obtained. The grinding operation and sifting operation are abandoned prematurely before the residue amounts to less than 1% of the quantity m. The residue, which comprises impurities, is discarded.