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US 12,623,914 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.
Claims45
A process for recovering lithium from a brine solution, the process comprising:
- concentrating the lithium in the brine solution by cyclically and sequentially flowing the brine solution through a continuous countercurrent adsorption and desorption (CCAD) circuit to form an enhanced lithium product stream, wherein the CCAD circuit comprises a plurality of process zones, each process zone comprises an adsorbent bed or column containing a lithium selective adsorbent;
- recovering the enhanced lithium product stream using a lithium-containing eluant solution or a portion of a lithium product eluate;
- and
- recycling heat from one or more heat exchangers or steam to the CCAD circuit.
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A process for recovering lithium from a brine solution, the process comprising:
- concentrating the lithium in the brine solution by cyclically and sequentially flowing the brine solution through a continuous countercurrent adsorption and desorption (CCAD) circuit to form an enhanced lithium product stream, wherein the CCAD circuit comprises a plurality of process zones, each process zone comprises an adsorbent bed or column containing a lithium selective adsorbent;
- recovering the enhanced lithium product stream using a lithium-containing eluant solution or a portion of a lithium product eluate;
- and
- recycling at least a portion of one or more of the enhanced lithium product stream, a concentrated enhanced lithium product stream, the lithium product eluate, a condensate solution, a mother liquor, a centrate solution, or a combination or mixture thereof to one or more of the process zones.
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Dependencies are inferred from the claim text.