437626 Recovery of RARE Earth Minerals and Elements from Coal and Coal Byproducts

Thursday, November 12, 2015: 12:55 PM
250E (Salt Palace Convention Center)
Rick Honaker1, Jack Groppo2, Venkata Abhijit Bhagavatula3, Mohammad Rezaee4 and Wencai Zhang4, (1)Mining Engineering, University of Kentucky, Lexington, KY, (2)Center for Applied Energy Research, University of Kentucky, Lexington, KY, (3)Consortium for Fossil Fuel Science, Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY, (4)University of Kentucky, Lexington, KY

Recent studies have shown that rare earth and other critical elements exist in coal and coal byproducts at concentrations as high as 2000 ppm on an ash-basis. The rare earth elements have been found in mineral form as monazite, xenotime and bastnaesite and also as an element substitute in clay. An investigation has been conducted to evaluate the potential of concentrating the rare earth (RE) minerals using physical concentration technologies such as density-based separators, froth flotation and magnetic separators. Distribution of the RE minerals as a function of the physical properties varied significantly between coal sources. However, the results indicate the potential to achieve concentration to a level dependent on the source using physical concentration techniques

Extended Abstract: File Not Uploaded