PROCESS AND SYSTEM FOR RECOVERING RARE EARTH ELEMENTS
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United States of America
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Issued Date -
Apr 14, 2022
app pub date -
Mar 12, 2020
filing date -
Mar 12, 2020
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Abstract
The present application provides a process and system for recovery of rare earth elements. In particular, the present application provides a process for obtaining a precipitate of rare earth elements (REE), comprising: (a) obtaining an acidic composition comprising the REE (such as, for example, a pregnant leach solution); (b) adding a reducing agent to the acidic composition and adjusting the pH with a basic agent; (c) adding oxalate directly to the composition formed in step (b) and mixing to form an REE oxalate precipitate; (d) removing the REE oxalate precipitate from the mixture of step (c).
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