|About this Abstract
||Part C-3: Processing of Critical Metals
||Recovery of Rare Earths from Phosphoric Acid Production
||Bruce A. Moyer, Derek Brigham, David DePaoli, Steven Sherman, Patrick Zhang
|On-Site Speaker (Planned)
||Bruce A. Moyer
The Critical Materials Institute (CMI), funded by the US Department of Energy, has been developing technologies toward reducing the supply risk for five rare earth elements (REEs). Producing phosphoric acid mainly for fertilizer, the phosphate industry has long been considered a potential secondary source of REEs as by-products. Although the concentration of REEs in phosphate rock is two orders of magnitude lower than that found in high-grade REE ores, the vast quantities of phosphate rock mined each year globally contain enough REEs to satisfy by many times their annual global demand. However, economic recovery of REEs from this source has been extremely challenging not only because of the low grade, but also because the REEs split into various streams during processing. This presentation will report recent results obtained by CMI on the development of methods for REE recovery from these various streams and corresponding evaluation of their feasibility.
||Planned: At-meeting proceedings