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US 12,630,436 B2Granted
Process for selective adsorption and recovery of lithium from natural and synthetic brines
AssigneeILiAD IP COMPANY, LLC
InventorsCharles R. Marston, Michael J. Garska
Life of this patent
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Abstract
This invention relates generally to a process for selective adsorption and recovery of lithium from natural and synthetic brines, and more particular to a process for recovering lithium from a natural or synthetic brine solution by passing the brine solution through a lithium selective adsorbent in a continuous countercurrent adsorption and desorption circuit.
Claims24
A process, comprising the steps of:
- selectively removing impurities from a feed brine solution to form a clarified or polished brine solution;
- concentrating lithium in the clarified or polished brine solution by cyclically and sequentially flowing the clarified or polished brine solution through a continuous countercurrent adsorption and desorption circuit to form an enhanced lithium product stream;
- the continuous countercurrent adsorption and desorption (CCAD) circuit comprising a multiport valve system having a plurality of process zones, and each process zone comprising a lithium selective adsorbent;
- concentrating the enhanced lithium product stream using membrane separation to form a concentrated enhanced lithium product stream;
- recovering the concentrated enhanced lithium product stream using a lithium-containing eluant or product stream;
- and
- selectively converting lithium in the concentrated enhanced lithium product stream to lithium carbonate, lithium hydroxide, or both.
4 more elements
Dependencies are inferred from the claim text.