PROCESS FOR RECOVERING AND PURIFYING LITHIUM
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United States of America Patent
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Issued Date -
Dec 14, 2023
app pub date -
Nov 9, 2021
filing date -
Nov 10, 2020
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Abstract
The present invention relates to the recovery and purification of lithium from lithium containing sources, like lithium ion battery materials, using ion exchange. A lithium salt containing solution is passed through an acid cation exchange resin, and a lithium raffinate and a mixture of other elements such as metals like nickel, cobalt and manganese, are recovered as products. The lithium raffinate can then be processed into other lithium products such as lithium carbonate and lithium hydroxide.
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