METHODS FOR EXTRACTING RARE EARTH ELEMENTS FROM RARE EARTH ELEMENT SOURCES
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United States of America
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Nov 7, 2024
app pub date -
Dec 4, 2021
filing date -
Dec 4, 2021
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Abstract
Described herein are methods for methods for extracting earth elements from rare earth element sources. In one aspect, the rare earth element source includes clayey materials present in coal and coal by-products, where one or more rare earth elements are adsorbed on the clayey materials. The methods involve admixing the rare earth element source with a base and an electrolyte composition. In one aspect, the electrolyte composition includes a chelating agent and/or a complexing agent. The extraction process is conducted at temperatures less than or equal to 100° C., which makes the process cost-effective and sustainable.
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