This bachelor thesis explores the potential of flotation as a beneficiation method for low-grade rare earth element (REE) ore from the Khalzan Buregtei deposit located in the Dundgobi province of Mongolia, with a particular focus on light REEs (LREEs). As the demand for REEs continues to rise due to the global shift towards sustainable technologies, the need for cost-effective and efficient beneficiation methods is crucial.
The Khalzan Buregtei deposit is known to contain both LREEs and heavy rare earth elements (HREEs), but knowledge of their beneficiation is limited due to the recent popularity of REE research. Flotation is a promising technique for the selective separation of REE minerals from gangue minerals based on differences in surface chemistry. However, the flotation of REE ores can be challenging due to the complex mineralogy and surface chemistry of the REE minerals.
Therefore, this study aims to optimize the flotation process for the Khalzan Buregtei ore by conducting laboratory experiments using various reagents and process parameters. The effectiveness of the process will be analyzed using analytical techniques such as X-ray fluorescence (XRF) and mineralogical analysis using optical microscopy and scanning electron microscopy (SEM).
The results of this research will provide insights into the potential of flotation as a beneficiation method for REE ores from the Khalzan Buregtei deposit, specifically for the separation of LREEs. The study also acknowledges the limitation of flotation for the extraction of HREEs and suggests that additional beneficiation methods, such as magnetic separation or leaching, may be necessary to extract HREEs from the ore. The findings of this research will contribute to the development of efficient and cost-effective beneficiation methods for REE ores, which are essential for meeting the growing demand for REEs in sustainable technologies