University of KY Laboratory and Bench-Scale...
The University of Kentucky conducted a study to evaluate the potential to concentrate rare earth elements (REEs) that exist in coal and coal byproducts using existing physical cleaning methods and technologies. The investigation involved the collection of six coal and coal byproducts samples from locations that were identified as having material with potentially elevated REE contents. A mineralogical study was conducted on selected samples from pre-concentration studies involving the use of SEM-EDS and ToF-SIMS. The potential for pre-concentrating REEs using density-based separators was found to be minimal which can be explained by the ultrafine grain sizes of the RE minerals. Froth flotation was found to be the only method of six evaluated that could be exploited to pre-concentrate REEs. A RE mineral release and concentration study was conducted on a sample collected from the middlings stream of an operating preparation plant treating Fire Clay seam coal. A survey of 20 coal preparation plants from which samples were segregated by particle size and density resulted in 771 samples that were analyzed for total REEs. Details of the above efforts are presented in this report along with accompanying data.
Additional Information
| Field | Value |
|---|---|
| Data last updated | February 12, 2015 |
| Metadata last updated | November 25, 2025 |
| Created | February 12, 2015 |
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